Question 1: Palette 1/119

JEE Mains 2024 MCQ

Match List I with List II.

	LIST I Alkali Metal		LIST II Emission Wavelength in nm
A.	Li	I.	589.2
B.	Na	II.	455.5
C.	Rb	III.	670.8
D.	Cs	IV.	780.0

Choose the correct answer from the options given below :

A

(A)-(II), (B)-(IV), (C)-(III), (D)-(I)

B

(A)-(III), (B)-(I), (C)-(IV), (D)-(II)

C

(A)-(I), (B)-(IV), (C)-(III), (D)-(II)

D

(A)-(IV), (B)-(II), (C)-(I), (D)-(III)

Question 2: Palette 2/119

JEE Mains 2023 MCQ

Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R :

Assertion (A) : $\mathrm{BeCl}_{2}$ and $\mathrm{MgCl}_{2}$ produce characteristic flame

Reason (R) : The excitation energy is high in $\mathrm{BeCl}_{2}$ and $\mathrm{MgCl}_{2}$

In the light of the above statements, choose the correct answer from the options given below :

A

$\mathrm{(A)}$ is true but $(\mathrm{R})$ is false

B

Both (A) and $(\mathrm{R})$ are true and $(\mathrm{R})$ is the correct explanation of $(A)$

C

(A) is false but (R) is true

D

Both (A) and (R) are true but (R) is NOT the correct explanation of (A)

Question 3: Palette 3/119

JEE Mains 2023 MCQ

Better method for preparation of $\mathrm{BeF}_{2}$, among the following is :

A

$\mathrm{BeH}_{2}+\mathrm{F}_{2} \stackrel{\Delta}{\longrightarrow} \mathrm{BeF}_{2}$

B

$\left(\mathrm{NH}_{4}\right)_{2} \mathrm{BeF}_{4} \stackrel{\Delta}{\longrightarrow} \mathrm{BeF}_{2}$

C

$\mathrm{Be}+\mathrm{F}_{2} \stackrel{\Delta}{\longrightarrow} \mathrm{BeF}_{2}$

D

$\mathrm{BeO}+\mathrm{C}+\mathrm{F}_{2} \stackrel{\Delta}{\longrightarrow} \mathrm{BeF}_{2}$

Question 4: Palette 4/119

JEE Mains 2023 MCQ

Identify the correct order of standard enthalpy of formation of sodium halides :

A

$\mathrm{NaI}<\mathrm{NaBr}<\mathrm{NaCl}<\mathrm{NaF}$

B

$\mathrm{NaI}<\mathrm{NaBr}<\mathrm{NaF}<\mathrm{NaCl}$

C

$\mathrm{NaF}<\mathrm{NaCl}<\mathrm{NaBr}<\mathrm{NaI}$

D

$\mathrm{NaCl}<\mathrm{NaF}<\mathrm{NaBr}<\mathrm{NaI}$

Question 5: Palette 5/119

JEE Mains 2023 MCQ

$\mathrm{Be}(\mathrm{OH})_{2}$ reacts with $\mathrm{Sr}(\mathrm{OH})_{2}$ to yield an ionic salt.

Choose the incorrect option related to this reaction from the following :

A

Be is tetrahedrally coordinated in the ionic salt.

B

The element $\mathrm{Be}$ is present in the cationic part of the ionic salt.

C

Both $\mathrm{Sr}$ and $\mathrm{Be}$ elements are present in the ionic salt.

D

The reaction is an example of acid - base neutralization reaction.

Question 6: Palette 6/119

JEE Mains 2023 MCQ

The density of alkali metals is in the order :

A

$\mathrm{Na}<\mathrm{K}<\mathrm{Cs}<\mathrm{Rb}$

B

$\mathrm{K}<\mathrm{Na}<\mathrm{Rb}<\mathrm{Cs}$

C

$\mathrm{K}<\mathrm{Cs}<\mathrm{Na}<\mathrm{Rb}$

D

$\mathrm{Na}<\mathrm{Rb}<\mathrm{K}<\mathrm{Cs}$

Question 7: Palette 7/119

JEE Mains 2023 MCQ

In the given reaction cycle

X, Y and Z respectively are :

A

$ \begin{array}{lll} \mathrm{X} & \mathrm{Y} & \mathrm{Z} \\ \mathrm{CaCO}_3 & \mathrm{NaCl} & \mathrm{KCl} \end{array} $

B

$ \begin{array}{lcl} \mathrm{X} & \mathrm{Y} & \mathrm{Z} \\ \mathrm{CaO} & \mathrm{NaCl}+\mathrm{CO}_2 & \mathrm{NaCl} \end{array} $

C

$ \begin{array}{lll} \mathrm{X} & \mathrm{Y} & \mathrm{Z} \\ \mathrm{CaCO}_3 & \mathrm{NaCl} & \mathrm{HCl} \end{array} $

D

$ \begin{array}{ccc} \mathrm{X} & \mathrm{Y} & \mathrm{Z} \\ \mathrm{CaO} & \mathrm{NaCl}+\mathrm{CO}_2 & \mathrm{KCI} \end{array} $

Question 8: Palette 8/119

JEE Mains 2023 MCQ

Alkali metal from the following with least melting point is :

A

$\mathrm{Rb}$

B

$\mathrm{Na}$

C

$\mathrm{K}$

D

$\mathrm{Cs}$

Question 9: Palette 9/119

JEE Mains 2023 MCQ

Match List-I with List-II:

	List - I		List - II
A.	K	I.	Thermonuclear reactions
B.	KCl	II.	Fertilizer
C.	KOH	III.	Sodium potassium pump
D.	Li	IV.	Absorbent of CO$_2$

Choose the correct answer from the options given below :

A

A-IV, B-III, C-I, D-II

B

A-III, B-II, C-IV, D-I

C

A-III, B-IV, C-II, D-I

D

A-IV, B-I, C-III, D-II

Question 10: Palette 10/119

JEE Mains 2023 MCQ

The correct order of metallic character is :

A

K > Be > Ca

B

Ca > K > Be

C

K > Ca > Be

D

Be > Ca > K

Question 11: Palette 11/119

JEE Mains 2023 MCQ

Number of water molecules in washing soda and soda ash respectively are :

A

1 and 0

B

10 and 1

C

1 and 10

D

10 and 0

Question 12: Palette 12/119

JEE Mains 2023 MCQ

Lime reacts exothermally with water to give 'A' which has low solubility in water. Aqueous solution of 'A' is often used for the test of CO$_2$, a test in which insoluble B is formed. If B is further reacted with CO$_2$ then soluble compound is formed, 'A' is :

A

Quick lime

B

White lime

C

Lime water

D

Slaked lime

Question 13: Palette 13/119

JEE Mains 2023 MCQ

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.

Assertion A : Sodium is about 30 times as abundant as potassium in the oceans.

Reason R : Potassium is bigger in size than sodium.

In the light of the above statements, choose the correct answer from the options given below

A

Both A and R are true but R is NOT the correct explanation of A

B

A is false but R is true

C

Both A and R are true and R is the correct explanation of A

D

A is true but R is false

Question 14: Palette 14/119

JEE Mains 2023 MCQ

For a good quality cement, the ratio of lime to the total of the oxides of $\mathrm{Si}, \mathrm{Al}$ and $\mathrm{Fe}$ should be as close as to :

A

3

B

2

C

1

D

4

Question 15: Palette 15/119

JEE Mains 2023 MCQ

Given below are two statements:

Statement I : Lithium and Magnesium do not form superoxide

Statement II : The ionic radius of $\mathrm{Li}^{+}$ is larger than ionic radius of $\mathrm{Mg}^{2+}$

In the light of the above statements, choose the most appropriate answer from the options given below :

A

Statement I is incorrect but Statement II is correct

B

Both Statement I and Statement II are incorrect

C

Both Statement I and Statement II are correct

D

Statement I is correct but Statement II is incorrect

Question 16: Palette 16/119

JEE Mains 2023 MCQ

What is the purpose of adding gypsum to cement?

A

To facilitate the hydration of cement

B

To speed up the process of setting

C

To give a hard mass

D

To slow down the process of setting

Question 17: Palette 17/119

JEE Mains 2023 MCQ

The product, which is not obtained during the electrolysis of brine solution is :

A

NaOH

B

Cl$_2$

C

H$_2$

D

HCl

Question 18: Palette 18/119

JEE Mains 2023 MCQ

Ion having highest hydration enthalpy among the given alkaline earth metal ions is :

A

$\mathrm{Sr}^{2+}$

B

$\mathrm{Ca}^{2+}$

C

$\mathrm{Be}^{2+}$

D

$\mathrm{Ba}^{2+}$

Question 19: Palette 19/119

JEE Mains 2023 MCQ

Structures of $\mathrm{BeCl}_{2}$ in solid state, vapour phase and at very high temperature respectively are :

A

Polymeric, Dimeric, Monomeric

B

Dimeric, Polymeric, Monomeric

C

Polymeric, Monomeric, Dimeric

D

Monomeric, Dimeric, Polymeric

Question 20: Palette 20/119

JEE Mains 2023 MCQ

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : Gypsum is used for making fireproof wall boards.

Reason (R) : Gypsum is unstable at high temperatures.

In the light of the above statements, choose the correct answer from the options given below :

A

Both (A) and (R) are correct but (R) is not the correct explanation of (A)

B

Both (A) and (R) are correct and (R) is the correct explanation of (A)

C

(A) is correct but (R) is not correct

D

(A) is not correct but (R) is correct

Question 21: Palette 21/119

JEE Mains 2023 MCQ

Match List I with List II :

	List I		List II
A.	Slaked lime	I.	$\mathrm{NaOH}$
B.	Dead burnt plaster	II.	$\mathrm{Ca(OH)_2}$
C.	Caustic soda	III.	$\mathrm{Na_2CO_3\cdot 10H_2O}$
D.	Washing soda	IV.	$\mathrm{CaSO_4}$

Choose the correct answer from the options given below :

A

(A) - III, (B) - IV, (C) - II, (D) - I

B

(A) - III, (B) - II, (C) - IV, (D) - I

C

(A) - II, (B) - IV, (C) - I, (D) - III

D

(A) - I, (B) - IV, (C) - II, (D) - III

Question 22: Palette 22/119

JEE Mains 2023 MCQ

Choose the correct statement(s) :

A. Beryllium oxide is purely acidic in nature.

B. Beryllium carbonate is kept in the atmosphere of $\mathrm{CO_2}$.

C. Beryllium sulphate is readily soluble in water.

D. Beryllium shows anomalous behaviour.

Choose the correct answer from the options given below :

A

A only

B

B, C and D only

C

A, B and C only

D

A and B only

Question 23: Palette 23/119

JEE Mains 2023 MCQ

The element playing significant role in neuromuscular function and interneuronal transmission is :

A

Be

B

$\mathrm{Ca}$

C

$\mathrm{Mg}$

D

$\mathrm{Li}$

Question 24: Palette 24/119

JEE Mains 2023 MCQ

Chlorides of which metal are soluble in organic solvents :

A

K

B

Be

C

Ca

D

Mg

Question 25: Palette 25/119

JEE Mains 2023 MCQ

Which of the following reaction is correct?

A

$4 \mathrm{LiNO}_{3} \stackrel{\Delta}{\longrightarrow} 2 \mathrm{Li}_{2} \mathrm{O}+4 \mathrm{NO}_{2}+\mathrm{O}_{2}$

B

$2 \mathrm{LiNO}_{3} \longrightarrow 2 \mathrm{Li}+2 \mathrm{NO}_{2}+\mathrm{O}_{2}$

C

$4 \mathrm{LiNO}_{3} \stackrel{\Delta}{\longrightarrow} 2 \mathrm{Li}_{2} \mathrm{O}+2 \mathrm{~N}_{2} \mathrm{O}_{4}+\mathrm{O}_{2}$

D

$2 \mathrm{LiNO}_{3} \stackrel{\Delta}{\longrightarrow} 2 \mathrm{NaNO}_{2}+\mathrm{O}_{2}$

Question 26: Palette 26/119

JEE Mains 2023 MCQ

Lithium aluminium hydride can be prepared from the reaction of :

A

$\mathrm{LiCl}$ and $\mathrm{Al_2H_6}$

B

$\mathrm{LiH}$ and $\mathrm{Al}(\mathrm{OH})_{3}$

C

$\mathrm{LiH}$ and $\mathrm{Al}_{2} \mathrm{Cl}_{6}$

D

$\mathrm{LiCl}, \mathrm{Al}$ and $\mathrm{H}_{2}$

Question 27: Palette 27/119

JEE Mains 2023 MCQ

The alkaline earth metal sulphate(s) which are readily soluble in water is/are :

A. $\mathrm{BeSO}_{4}$

B. $\mathrm{MgSO}_{4}$

C. $\mathrm{CaSO}_{4}$

D. $\mathrm{SrSO}_{4}$

E. $\mathrm{BaSO}_{4}$

Choose the correct answer from the options given below :

A

A and B

B

B and C

C

B only

D

A only

Question 28: Palette 28/119

JEE Mains 2023 MCQ

The correct order of hydration enthalpies is

(A) K$^+$

(B) Rb$^+$

(C) Mg$^{2+}$

(D) Cs$^+$

(E) Ca$^{2+}$

Choose the correct answer from the options given below :

A

E > C > A > B > D

B

C > A > E > B > D

C

C > E > A > D > B

D

C > E > A > B > D

Question 29: Palette 29/119

JEE Mains 2023 MCQ

Which one among the following metals is the weakest reducing agent?

A

K

B

Na

C

Li

D

Rb

Question 30: Palette 30/119

JEE Mains 2023 MCQ

Which of the following represents the correct order of metallic character of the given elements?

A

K < Mg < Be < Si

B

Si < Be < Mg < K

C

Be < Si < Mg < K

D

Be < Si < K < Mg

Question 31: Palette 31/119

JEE Mains 2023 MCQ

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R

Assertion A : The alkali metals and their salts impart characteristic colour to reducing flame.

Reason R : Alkali metals can be detected using flame tests.

In the light of the above statements, choose the most appropriate answer from the options given below :

A

A is not correct but R is correct

B

A is correct but R is not correct

C

Both A and R are correct and R is the correct explanation of A

D

Both A and R are correct but R is NOT the correct explanation of A

Question 32: Palette 32/119

JEE Mains 2023 MCQ

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R

Assertion A : Beryllium has less negative value of reduction potential compared to the other alkaline earth metals.

Reason R : Beryllium has large hydration energy due to small size of Be$^{2+}$ but relatively large value of atomization enthalpy

In the light of the above statements, choose the most appropriate answer from the options given below :

A

Both A and R are correct but R is NOT the correct explanation of A

B

Both A and R are correct and R is the correct explanation of A

C

A is correct but R is not correct

D

A is not correct but R is correct

Question 33: Palette 33/119

JEE Mains 2023 MCQ

Identify the correct statements about alkali metals.

A. The order of standard reduction potential (M$^+$ | M) for alkali metal ions is Na > Rb > Li.

B. CsI is highly soluble in water.

C. Lithium carbonate is highly stable to heat.

D. Potassium dissolved in concentrated liquid ammonia is blue in colour and paramagnetic.

E. All the alkali metal hydrides are ionic solids.

Choose the correct answer from the options given below :

A

C and E only

B

A and E only

C

A, B, D only

D

A, B and E only

Question 34: Palette 34/119

JEE Mains 2023 MCQ

Match List I with List II

	List-I		List-II
A.	Chlorophyll	I.	$\mathrm{Na_2CO_3}$
B.	Soda ash	II.	$\mathrm{CaSO_4}$
C.	Dentistry, Ornamental work	III.	$\mathrm{Mg^{2+}}$
D.	Used in white washing	IV.	$\mathrm{Ca(OH)_2}$

Choose the correct answer from the options given below :

A

A-III, B-I, C-II, D-IV

B

A-II, B-III, C-IV, D-I

C

A-II, B-I, C-III, D-IV

D

A-III, B-IV, C-I, D-II

Question 35: Palette 35/119

JEE Mains 2023 MCQ

Reaction of BeO with ammonia and hydrogen fluoride gives A which on thermal decomposition gives $\mathrm{BeF_2}$ and $\mathrm{NH_4F}$. What is 'A'?

A

$\mathrm{(NH_4)Be_2F_5}$

B

$\mathrm{(NH_4)_2BeF_4}$

C

$\mathrm{(NH_4)BeF_3}$

D

$\mathrm{H_3NBeF_3}$

Question 36: Palette 36/119

JEE Mains 2022 MCQ

Portland cement contains 'X' to enhance the setting time. What is 'X'?

A

$\mathrm{CaSO}_{4} \cdot \frac{1}{2} \mathrm{H}_{2} \mathrm{O}$

B

$\mathrm{CaSO}_{4} \cdot 2 \mathrm{H}_{2} \mathrm{O}$

C

$\mathrm{CaSO}_{4}$

D

$\mathrm{CaCO}_{3}$

Question 37: Palette 37/119

JEE Mains 2022 MCQ

Lithium nitrate and sodium nitrate, when heated separately, respectively, give :

A

$\mathrm{LiNO}_{2}$ and $\mathrm{NaNO}_{2}$

B

$\mathrm{Li}_{2} \mathrm{O}$ and $\mathrm{Na}_{2} \mathrm{O}$

C

$\mathrm{Li}_{2} \mathrm{O}$ and $\mathrm{NaNO}_{2}$

D

$\mathrm{LiNO}_{2}$ and $\mathrm{Na}_{2} \mathrm{O}$

Question 38: Palette 38/119

JEE Mains 2022 MCQ

The correct decreasing order for metallic character is :

A

Na > Mg > Be > Si > P

B

P > Si > Be > Mg > Na

C

Si > P > Be > Na > Mg

D

Be > Na > Mg > Si > P

Question 39: Palette 39/119

JEE Mains 2022 MCQ

Statement I : An alloy of lithium and magnesium is used to make aircraft plates.

Statement II : The magnesium ions are important for cell-membrane integrity.

In the light the above statements, choose the correct answer from the options given below :

A

Both Statement I and Statement II are true

B

Both Statement I and Statement II are false

C

Statement I is true but Statement II is false

D

Statement I is false but Statement II is true

Question 40: Palette 40/119

JEE Mains 2022 MCQ

Which of the following statement is incorrect?

A

Low solubility of LiF in water is due to its small hydration enthalpy.

B

$\mathrm{KO}_{2}$ is paramagnetic.

C

Solution of sodium in liquid ammonia is conducting in nature.

D

Sodium metal has higher density than potassium metal.

Question 41: Palette 41/119

JEE Mains 2022 MCQ

An element A of group 1 shows similarity to an element B belonging to group 2. If A has maximum hydration enthalpy in group 1 then B is :

A

Mg

B

Be

C

Ca

D

Sr

Question 42: Palette 42/119

JEE Mains 2022 MCQ

The metal that has very low melting point and its periodic position is closer to a metalloid is :

A

Al

B

Ga

C

Se

D

In

Question 43: Palette 43/119

JEE Mains 2022 MCQ

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.

Assertion A: $\mathrm{LiF}$ is sparingly soluble in water.

Reason R: The ionic radius of $\mathrm{Li}^{+}$ ion is smallest among its group members, hence has least hydration enthalpy.

In the light of the above statements, choose the most appropriate answer from the options given below.

A

Both A and R are true and R is the correct explanation of A.

B

Both A and R are true but R is NOT the correct explanation of A.

C

A is true but R is false.

D

A is false but R is true.

Question 44: Palette 44/119

JEE Mains 2022 MCQ

Reaction of $\mathrm{BeCl}_{2}$ with $\mathrm{LiAlH}_{4}$ gives :

(A) $\mathrm{AlCl}_{3}$

(B) $\mathrm{BeH}_{2}$

(C) $\mathrm{LiH}$

(D) $\mathrm{LiCl}$

(E) $\mathrm{BeAlH}_{4}$

Choose the correct answer from options given below :

A

(A), (D) and (E)

B

(A), (B) and (D)

C

(D) and (E)

D

(B), (C) and (D)

Question 45: Palette 45/119

JEE Mains 2022 MCQ

The correct order of density is :

A

Be > Mg > Ca > Sr

B

Sr > Ca > Mg > Be

C

Sr > Be > Mg > Ca

D

Be > Sr > Mg > Ca

Question 46: Palette 46/119

JEE Mains 2022 MCQ

Choose the correct order of density of the alkali metals :

A

Li < K < Na < Rb < Cs

B

Li < Na < K < Rb < Cs

C

Cs < Rb < K < Na < Li

D

Li < Na < K < Cs < Rb

Question 47: Palette 47/119

JEE Mains 2022 MCQ

Match List - I with List - II :

	List-I		List-II
(a)	Sodium hydride	(i)	Lewis acid
(b)	Silane	(ii)	Saline hydride
(c)	Vanadium hydride	(iii)	Molecular hydride
(d)	Aluminium hydride	(iv)	Non-stoichiometric hydride

Correct answer is :

A

(a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)

B

(a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)

C

(a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)

D

(a)-(i), (b)-(iii), (c)-(iv), (d)-(ii)

Question 48: Palette 48/119

JEE Mains 2022 MCQ

Correct statement about alkali metal oxides is :

A

peroxides are colored.

B

superoxides are paramagnetic.

C

oxides are paramagnetic.

D

peroxides are both colored and paramagnetic.

Question 49: Palette 49/119

JEE Mains 2022 MCQ

Amongst baking soda, caustic soda and washing soda, carbonate anion is present in :

A

washing soda only.

B

washing soda and caustic soda only.

C

washing soda and baking soda only.

D

baking soda, caustic soda and washing soda.

Question 50: Palette 50/119

JEE Mains 2022 MCQ

Arrange the following in the decreasing order of their covalent character :

(A) LiCl

(B) NaCl

(C) KCl

(D) CsCl

Choose the most appropriate answer from the options given below :

A

(A) > (C) > (B) > (D)

B

(B) > (A) > (C) > (D)

C

(A) > (B) > (C) > (D)

D

(A) > (B) > (D) > (C)

Question 51: Palette 51/119

JEE Mains 2022 MCQ

Match List-I with List-II

	List-I (Metal)		List-II (Emitted light wavelength (nm))
(A)	Li	(I)	670.8
(B)	Na	(II)	589.2
(C)	Rb	(III)	780.0
(D)	Cs	(IV)	455.5

Choose the most appropriate answer from the options given below :

A

(A)-(I), (B)-(II), (C)-(III), (D)-(IV)

B

(A)-(III), (B)-(II), (C)-(I), (D)-(IV)

C

(A)-(III), (B)-(I), (C)-(II), (D)-(IV)

D

(A)-(IV), (B)-(II), (C)-(I), (D)-(III)

Question 52: Palette 52/119

JEE Mains 2022 MCQ

Addition of H₂SO₄ to BaO₂ produces :

A

BaO, SO₂ and H₂O

B

BaHSO₄ and O₂

C

BaSO₄, H₂ and O₂

D

BaSO₄ and H₂O₂

Question 53: Palette 53/119

JEE Mains 2022 MCQ

BeCl₂ reacts with LiAlH₄ to give :

A

Be + Li[AlCl₄] + H₂

B

Be + AlH₃ + LiCl + HCl

C

BeH₂ + LiCl + AlCl₃

D

BeH₂ + Li[AlCl₄]

Question 54: Palette 54/119

JEE Mains 2022 MCQ

s-block element which cannot be qualitatively confirmed by the flame test is :

A

Li

B

Na

C

Rb

D

Be

Question 55: Palette 55/119

JEE Mains 2022 MCQ

The correct order of melting point is :

A

Be > Mg > Ca > Sr

B

Sr > Ca > Mg > Be

C

Be > Ca > Mg > Sr

D

Be > Ca > Sr > Mg

Question 56: Palette 56/119

JEE Mains 2022 MCQ

Which one of the following alkaline earth metal ions has the highest ionic mobility in its aqueous solution?

A

Be²⁺

B

Mg²⁺

C

Ca²⁺

D

Sr²⁺

Question 57: Palette 57/119

JEE Mains 2022 MCQ

In the industrial production of which of the following, molecular hydrogen is obtained as a byproduct?

A

NaOH

B

NaCl

C

Na metal

D

Na₂CO₃

Question 58: Palette 58/119

JEE Mains 2022 MCQ

Which one of the following compounds is used as a chemical in certain type of fire extinguishers?

A

Baking soda

B

Soda ash

C

Washing soda

D

Caustic soda

Question 59: Palette 59/119

JEE Mains 2022 MCQ

Which of the following statements are correct?

(A) Both LiCl and MgCl₂ are soluble in ethanol.

(B) The oxides Li₂O and MgO combine with excess of oxygen to give superoxide.

(C) LiF is less soluble in water than other alkali metal fluorides.

(D) Li₂O is more soluble in water than other alkali metal oxides.

Choose the most appropriate answer from the options given below :

A

(A) and (C) only

B

(A), (C) and (D) only

C

(B) and (C) only

D

(A) and (D) only

Question 60: Palette 60/119

JEE Mains 2021 MCQ

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : Lithium salts are hydrated.

Reason (R) : Lithium has higher polarising power than other alkali metal group members.

In the light of the above statements, choose the most appropriate answer from the options given below :

A

Both (A) and (R) are correct but (R) is not the correct explanation of (A)

B

(A) is correct but (R) is not correct.

C

(A) is not correct but (R) is correct.

D

Both (A) and (R) are correct and (R) is the correct explanation of (A)

Question 61: Palette 61/119

JEE Mains 2021 MCQ

The major component/ingredient of Portland Cement is :

A

tricalcium aluminate

B

tricalcium silicate

C

dicalcium aluminate

D

dicalcium silicate

Question 62: Palette 62/119

JEE Mains 2021 MCQ

Choose the correct statement from the following :

A

The standard enthalpy of formation for alkali metal bromides becomes less negative on descending the group.

B

The low solubility of CsI in water is due to its high lattice enthalpy.

C

Among the alkali metal halides, LiF is least soluble in water.

D

LiF has least negative standard enthalpy of formation among alkali metal fluorides.

Question 63: Palette 63/119

JEE Mains 2021 MCQ

The number of water molecules in gypsum, dead burnt plaster and plaster of Paris, respectively are :

A

2, 0 and 1

B

0.5, 0 and 2

C

5, 0 and 0.5

D

2, 0 and 0.5

Question 64: Palette 64/119

JEE Mains 2021 MCQ

What are the products formed in sequence when excess of CO₂ is passed in slaked lime?

A

Ca(HCO₃)₂, CaCO₃

B

CaCO₃, Ca(HCO₃)₂

C

CaO, Ca(HCO₃)₂

D

CaO, CaCO₃

Question 65: Palette 65/119

JEE Mains 2021 MCQ

Match List - I with List - II :

	List - I		List - II
(a)	Li	(i)	photoelectric cell
(b)	Na	(ii)	absorbent of $C{O_2}$
(c)	K	(iii)	coolant in fast breeder nuclear reactor
(d)	Cs	(iv)	treatment of cancer
		(v)	bearings for motor engines

Choose the correct answer from the options given below :

A

(a) - (v), (b) - (i), (c) - (ii), (d) - (iv)

B

(a) - (v), (b) - (ii), (c) - (iv), (d) - (i)

C

(a) - (iv), (b) - (iii), (c) - (i), (d) - (ii)

D

(a) - (v), (b) - (iii), (c) - (ii), (d) - (i)

Question 66: Palette 66/119

JEE Mains 2021 MCQ

Given below are two statements : One is labelled as Assertion A and the other labelled as Reason R.

Assertion A : Lithium halides are some what covalent in nature.

Reason R : Lithium posses high polarisation capability.

In the light of the above statements, choose the most appropriate answer from the options given below :

A

A is true but R is false

B

A is false but R is true

C

Both A and R are true but R is NOT the correct explanation of A

D

Both A and R are true and R is the correct explanation of A

Question 67: Palette 67/119

JEE Mains 2021 MCQ

Match List I with List II :

	List-I Elements		List-II Properties
(a)	Li	(i)	Poor water solubility of ${I^ - }$ salt
(b)	Na	(ii)	Most abundant element in cell fluid
(c)	K	(iii)	Bicarbonate salt used in fire extinguisher
(d)	Cs	(iv)	Carbonate salt decomposes easily on heating

Choose the correct answer from the options given below :

A

(a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)

B

(a)-(i), (b)-(iii), (c)-(ii), (d)-(iv)

C

(a)-(iv), (b)-(ii), (c)-(iii), (d)-(i)

D

(a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)

Question 68: Palette 68/119

JEE Mains 2021 MCQ

Given below are two statements :

Statement I : None of the alkaline earth metal hydroxides dissolve in alkali.

Statement II : Solubility of alkaline earth metal hydroxides in water increases down the group.

In the light of the above statements, choose the most appropriate answer from the options given below :

A

Statement I is correct but Statement II is incorrect.

B

Statement I is incorrect but Statement II is correct.

C

Statement I and Statement II both are incorrect.

D

Statement I and Statement II both are correct.

Question 69: Palette 69/119

JEE Mains 2021 MCQ

Match List-I with List-II

	List-I (Elements)		List-II (Properties)
(a)	Ba	(i)	Organic solvent soluble compounds
(b)	Ca	(ii)	Outer electronic configuration $6{s^2}$
(c)	Li	(iii)	Oxalate insoluble in water
(d)	Na	(iv)	Formation of very strong monoacidic base

Choose the correct answer from the options given below :

A

(a)-(ii), (b)-(iii), (c)-(i) and (d)-(iv)

B

(a)-(iv), (b)-(i), (c)-(ii) and (d)-(iii)

C

(a)-(iii), (b)-(ii), (c)-(iv) and (d)-(i)

D

(a)-(i), (b)-(iv), (c)-(ii) and (d)-(iii)

Question 70: Palette 70/119

JEE Mains 2021 MCQ

The set in which compounds have different nature is :

A

B(OH)₃ and H₃PO₃

B

B(OH)₃ and Al(OH)₃

C

NaOH and Ca(OH)₂

D

Be(OH)₂ and Al(OH)₃

Question 71: Palette 71/119

JEE Mains 2021 MCQ

A s-block element (M) reacts with oxygen to form an oxide of the formula MO₂. The oxide is pale yellow in colour and paramagnetic. The element (M) is :

A

Mg

B

Na

C

Ca

D

K

Question 72: Palette 72/119

JEE Mains 2021 MCQ

Match List - I with List - II :

	List - I		List - II
(a)	Be	(i)	treatment of cancer
(b)	Mg	(ii)	extraction of metals
(c)	Ca	(iii)	incendiary bombs and signals
(d)	Ra	(iv)	windows of X-ray tubes
		(v)	bearings for motor engines

Choose the most appropriate answer from the option given below :

A

(a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)

B

(a)-(iii), (b)-(iv), (c)-(v), (d)-(ii)

C

(a)-(iii), (b)-(iv), (c)-(ii), (d)-(v)

D

(a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)

Question 73: Palette 73/119

JEE Mains 2021 MCQ

Match List - I with List - II

	List - I		List - II
(a)	$Ca{(OCl)_2}$	(i)	Antacid
(b)	$CaS{O_4}.{1 \over 2}{H_2}O$	(ii)	Cement
(c)	$CaO$	(iii)	Bleach
(d)	$CaC{O_3}$	(iv)	Plaster of paris

Choose the most appropriate answer from the options given below :

A

(a) - (i), (b) - (iv), (c) - (iii), (d) - (ii)

B

(a) - (iii), (b) - (ii), (c) - (iv), (d) - (i)

C

(a) - (iii), (b) - (iv), (c) - (ii), (d) - (i)

D

(a) - (iii), (b) - (ii), (c) - (i), (d) - (iv)

Question 74: Palette 74/119

JEE Mains 2021 MCQ

The set of elements that differ in mutual relationship from those of the other sets is :

A

Li - Na

B

Be - Al

C

B - Si

D

Li - Mg

Question 75: Palette 75/119

JEE Mains 2021 MCQ

One of the by-products formed during the recovery of NH₃ from Solvay process is :

A

Ca(OH)₂

B

NH₄Cl

C

NaHCO₃

D

CaCl₂

Question 76: Palette 76/119

JEE Mains 2021 MCQ

The correct order of conductivity of ions in water is :

A

K⁺ > Na⁺ > Cs⁺ > Rb⁺

B

Cs⁺ > Rb⁺ > K⁺ > Na⁺

C

Na⁺ > K⁺ > Rb⁺ > Cs⁺

D

Rb⁺ > Na⁺ > K⁺ > Li⁺

Question 77: Palette 77/119

JEE Mains 2021 MCQ

Given below are two statements :

Statement I : Both CaCl₂ . 6H₂O and MgCl₂ . 8H₂O undergo dehydration on heating.

Statement II : BeO is amphoteric whereas the oxides of other elements in the same group are acidic.

In the light of the above statements, choose the correct answer from the options given below :

A

Both statement I and statement II are false

B

Statement I is false but statement II is true

C

Statement I is true but statement II is false

D

Both statement I and statement II are true

Question 78: Palette 78/119

JEE Mains 2021 MCQ

Match List - I with List - II.

	List I (Salt)		List II (Flame colour wavelength)
(a)	LiCl	(i)	455.5 nm
(b)	NaCl	(ii)	670.8 nm
(c)	RbCl	(iii)	780.0 nm
(d)	CsCl	(iv)	589.2 nm

Choose the correct answer from the options given below :

A

(a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)

B

(a)-(iv), (b)-(ii), (c)-(iii), (d)-(i)

C

(a)-(i), (b)-(iv), (c)-(ii), (d)-(iii)

D

(a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)

Question 79: Palette 79/119

JEE Mains 2020 MCQ

Match the following compounds (Column-I) with their uses (Column-II) :

S.No.	Column-I	S.No.	Column-II
(I)	Ca(OH)2	(A)	casts of statues
(II)	NaCl	(B)	white wash
(III)	CaSO4, ${1 \over 2}$H2O	(C)	antacid
(IV)	CaCO3	(D)	washing soda preparation

A

(I)-(B), (II)-(C), (III)-(D), (IV)-(A)

B

(I)-(B), (II)-(D), (III)-(A), (IV)-(C)

C

(I)-(C), (II)-(D), (III)-(B), (IV)-(A)

D

(I)-(D), (II)-(A), (III)-(C), (IV)-(B)

Question 80: Palette 80/119

JEE Mains 2020 MCQ

Among the sulphates of alkaline earth metals, the solubilities of BeSO₄ and MgSO₄ in water, respectively, are :

A

poor and poor

B

poor and high

C

high and poor

D

high and high

Question 81: Palette 81/119

JEE Mains 2020 MCQ

An alkaline earth metal ‘M’ readily forms water soluble sulphate and water insoluble hydroxide. Its oxide MO is very stable to heat and does not have rock-salt structure. M is :

A

Ca

B

Mg

C

Sr

D

Be

Question 82: Palette 82/119

JEE Mains 2020 MCQ

On combustion of Li, Na and K in excess of air, the major oxides formed, respectively, are :

A

Li₂O, Na₂O₂ and K₂O

B

Li₂O₂, Na₂O₂ and K₂O₂

C

Li₂O, Na₂O₂ and KO₂

D

Li₂O, Na₂O and K₂O₂

Question 83: Palette 83/119

JEE Mains 2020 MCQ

Two elements A and B have similar chemical properties. They don’t form solid hydrogencarbonates, but react with nitrogen to form nitrides. A and B, respectively, are :

A

Li and Mg

B

Cs and Ba

C

Na and Rb

D

Na and Ca

Question 84: Palette 84/119

JEE Mains 2020 MCQ

The metal mainly used in devising photoelectric cells is :

A

Na

B

Rb

C

Li

D

Cs

Question 85: Palette 85/119

JEE Mains 2020 MCQ

Among the statements (a)-(d) the correct ones are :

(a) Lithium has the highest hydration enthalpy among the alkali metals.

(b) Lithium chloride is insoluble in pyridine.

(c) Lithium cannot form ethynide upon its reaction with ethyne.

(d) Both lithium and magnesium react slowly with H₂O.

A

(b) and (c) only

B

(a) and (d) only

C

(a), (b) and (d) only

D

(a), (c) and (d) only

Question 86: Palette 86/119

JEE Mains 2020 MCQ

When gypsum is heated to 393 K, it forms :

A

CaSO₄ . 0.5H₂O

B

CaSO₄ . 5H₂O

C

Dead burnt plaster

D

Anhydrous CaSO₄

Question 87: Palette 87/119

JEE Mains 2019 MCQ

The INCORRECT statement is :

A

Lithium is least reactive with water among the alkali metals

B

LiCl crystallises from aqueous solution as LiCl.2H₂O

C

Lithium is the strongest reducing agent among the alkali metals

D

LiNO₃ decomposes on heating to give LiNO₂ and O₂

Question 88: Palette 88/119

JEE Mains 2019 MCQ

The correct sequence of thermal stability of the following carbonates is :

A

BaCO₃ < SrCO₃ < CaCO₃ < MgCO₃

B

MgCO₃ < CaCO₃ < SrCO₃ < BaCO₃

C

BaCO₃ < CaCO₃ < SrCO₃ < MgCO₃

D

MgCO₃ < SrCO₃ < CaCO₃ < BaCO₃

Question 89: Palette 89/119

JEE Mains 2019 MCQ

A hydrated solid X on heating initially gives a monohydrated compound Y. Y upon heating above 373 K leads to an anhydrous white powder Z. X and Z, respectively, are :

A

Baking soda and dead burnt plaster.

B

Washing soda and soda ash

C

Washing soda and dead burnt plaster.

D

Baking soda and soda as.

Question 90: Palette 90/119

JEE Mains 2019 MCQ

The alloy used in the construction of aircrafts is :

A

Mg – Zn

B

Mg – Al

C

Mg – Mn

D

Mg – Sn

Question 91: Palette 91/119

JEE Mains 2019 MCQ

The structures of beryllium chloride in the solid state and vapour, phase, respectively,are :

A

chain and chain

B

dimeric and chain

C

chain and dimeric

D

dimeric and dimeric

Question 92: Palette 92/119

JEE Mains 2019 MCQ

Magnisium powder burns in air to give :

A

MgO and Mg₃N₂

B

MgO only

C

Mg(NO₃)₂ and Mg₃N₂

D

MgO and Mg(NO₃)₂

Question 93: Palette 93/119

JEE Mains 2019 MCQ

The correct order of hydration enthapies of alkali metal ions is :

A

Li⁺ > Na⁺ > Cs⁺ > Rb⁺

B

Na⁺ > Li⁺ > K⁺ > Cs⁺ > Rb⁺

C

Na⁺ > Li⁺ > K⁺ > Rb⁺ > Cs⁺

D

Li⁺ > Na⁺ > K⁺ > Rb⁺ > Cs⁺

Question 94: Palette 94/119

JEE Mains 2019 MCQ

A metal on combustion in excess air forms X. X upon hydrolysis with water yields H₂O₂ and O₂ along with another product. The metal is :

A

Rb

B

Mg

C

Na

D

Li

Question 95: Palette 95/119

JEE Mains 2019 MCQ

The reaction that does NOT define calcination is :

A

2Cu₂S + 3O₂ $\buildrel \Delta \over \longrightarrow $ 2Cu₂O + 2SO₂

B

CaCO₃ . MgCO₃ $\buildrel \Delta \over \longrightarrow $ CaO + MgO + 2CO₂

C

ZnCO₃ $\buildrel \Delta \over \longrightarrow $ ZnO + CO₂

D

Fe₂O₃ . XH₂O $\buildrel \Delta \over \longrightarrow $ Fe₂O₃ + XH₂O

Question 96: Palette 96/119

JEE Mains 2019 MCQ

Match the following items in column I with the corresponding items in column II.

Item I		Item II
(i)	Na2CO3.10H2O	(A)	Portland cement ingredient
(ii)	Mg(HCO3)2	(B)	Castner-Kellner process
(iii)	NaOH	(C)	Solvay process
(iv)	Ca3Al2O6	(D)	Temporary hardness

A

(i)$ \to $(D); (ii)$ \to $(A); (iii)$ \to $(B); (iv)$ \to $(C)

B

(i)$ \to $(B); (ii)$ \to $(C); (iii)$ \to $(A); (iv)$ \to $(D)

C

(i)$ \to $(C); (ii)$ \to $(B); (iii)$ \to $(D); (iv)$ \to $(A)

D

(i)$ \to $(C); (ii)$ \to $(D); (iii)$ \to $(B); (iv)$ \to $(A)

Question 97: Palette 97/119

JEE Mains 2019 MCQ

The amphoteric hydroxide is :

A

Ca(OH)₂

B

Be(OH)₂

C

Mg(OH)₂

D

Sr(OH)₂

Question 98: Palette 98/119

JEE Mains 2019 MCQ

Sodium metal on dissolution in liquid ammonia gives a deep blue solution due to the formation of :

A

ammoniated electrons

B

sodamide

C

sodium-ammonia complex

D

sodium ion-ammonia complex

Question 99: Palette 99/119

JEE Mains 2019 MCQ

The metal used for marking X–ray tube window is :

A

Ca

B

Na

C

Mg

D

Be

Question 100: Palette 100/119

JEE Mains 2019 MCQ

The metal that forms nitride by reacting directly with N₂ of air, is :

A

K

B

Li

C

Rb

D

Cs

Question 101: Palette 101/119

JEE Mains 2019 MCQ

The alkaline earth metal nitrate that does not crystallise with water molecules, is :

A

Mg(NO₃)₂

B

Sr(NO₃)₂

C

Ca(NO₃)₂

D

Ba(NO₃)₂

Question 102: Palette 102/119

JEE Mains 2017 MCQ

Both lithium and magnesium display several similar properties due to the diagonal relationship; however, the one which is incorrect, is :

A

both form soluble bicarbonates

B

both from nitrides

C

nitrates of both Li and Mg yield NO₂ and O₂ on heating

D

both form basic carbonates

Question 103: Palette 103/119

JEE Mains 2016 MCQ

The commercial name for calcium oxide is :

A

Milk of lime

B

Slaked lime

C

Limestone

D

Quick lime

Question 104: Palette 104/119

JEE Mains 2016 MCQ

The correct order of the solubility of alkaline-earth metal sulphates in water is :

A

Mg < Ca < Sr < Ba

B

Mg < Sr < Ca < Ba

C

Mg > Sr > Ca > Ba

D

Mg > Ca > Sr > Ba

Question 105: Palette 105/119

JEE Mains 2016 MCQ

Which of the following atoms has the highest first ionization energy?

A

Na

B

K

C

Sc

D

Rb

Question 106: Palette 106/119

JEE Mains 2016 MCQ

The main oxides formed on combustion of Li, Na and K in excess of air are, respectively :

A

LiO₂, Na₂O₂ and K₂O

B

Li₂O₂, Na₂O₂ and KO₂

C

Li₂O, Na₂O₂ and KO₂

D

Li₂O, Na₂O and KO₂

Question 107: Palette 107/119

JEE Mains 2016 MCQ

The hottest region of Bunsen flame shown in the figure below is :

A

region $1$

B

region $2$

C

region $3$

D

region $4$

Question 108: Palette 108/119

JEE Mains 2015 MCQ

Which one of the following alkaline earth metal sulphates has its hydration enthalpy greater than its lattice enthalpy?

A

BeSO₄

B

BaSO₄

C

SrSO₄

D

CaSO₄

Question 109: Palette 109/119

JEE Mains 2014 MCQ

The metal that cannot be obtained by electrolysis of an aqueous solution of its salts is :

A

Cu

B

Cr

C

Ag

D

Ca

Question 110: Palette 110/119

JEE Mains 2012 MCQ

Which of the following on thermal decomposition yields a basic as well as an acidic oxide?

A

NaNO₃

B

KClO₃

C

CaCO₃

D

NH₄NO₃

Question 111: Palette 111/119

JEE Mains 2006 MCQ

The ionic mobility of alkali metal ions in aqueous solution is maximum for :

A

K⁺

B

Rb⁺

C

Li⁺

D

Na⁺

Question 112: Palette 112/119

JEE Mains 2005 MCQ

Based on lattice energy and other considerations which one of the following alkali metal chlorides is expected to have the highest melting point :

A

LiCl

B

NaCl

C

KCl

D

RbCl

Question 113: Palette 113/119

JEE Mains 2004 MCQ

One mole of magnesium nitride on the reaction with an excess of water gives :

A

one mole of ammonia

B

two moles of nitric acid

C

two moles of ammonia

D

one mole of nitric acid

Question 114: Palette 114/119

JEE Mains 2003 MCQ

In curing cement plasters water is sprinkled from time to time. This helps in :

A

developing interlocking needle like crystals of hydrated silicates

B

hydrating sand and gravel mixed with cement

C

converting sand into silicic acid

D

keeping it cool

Question 115: Palette 115/119

JEE Mains 2003 MCQ

The solubilities of carbonates decrease down the magnesium group due to a decrease in :

A

hydration energy of cations

B

inter-ionic attraction

C

entropy of solution formation

D

lattice energies of solids

Question 116: Palette 116/119

JEE Mains 2003 MCQ

The substance not likely to contain CaCO₃ is :

A

calcined gypsum

B

sea shells

C

dolomite

D

a marble statue

Question 117: Palette 117/119

JEE Mains 2002 MCQ

KO₂ (potassium super oxide) is used in oxygen cylinders in space and submarines because it :

A

absorbs CO₂ and increases O₂ content

B

eliminates moisture

C

absorbs CO₂

D

produces ozone

Question 118: Palette 118/119

JEE Mains 2002 MCQ

A metal M readily forms its sulphate MSO₄, which is water-soluble. It forms its oxide MO which becomes inert on heating. It forms an insoluble hydroxide M(OH)₂ which is soluble in NaOH solution. The M is :

A

Mg

B

Ba

C

Ca

D

Be

Question 119: Palette 119/119

JEE Mains 2002 MCQ

The metallic sodium disolves in liquid ammonia to form a deep blue coloured solution. The deep blue colour is due to formation of :

A

solvated electron, $e(NH_3)^-_x$

B

solvated atomic sodium, Na(NH₃)_y

C

(Na⁺ + Na^-)

D

NaNH₂ + H₂