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s-Block Elements

167 Questions
All Exams JEE Mains JEE Advanced
2022 JEE Mains MCQ
JEE Main 2022 (Online) 29th June Morning Shift

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)
2022 JEE Mains MCQ
JEE Main 2022 (Online) 27th June Morning Shift

Addition of H2SO4 to BaO2 produces :

A.
BaO, SO2 and H2O
B.
BaHSO4 and O2
C.
BaSO4, H2 and O2
D.
BaSO4 and H2O2
2022 JEE Mains MCQ
JEE Main 2022 (Online) 27th June Morning Shift

BeCl2 reacts with LiAlH4 to give :

A.
Be + Li[AlCl4] + H2
B.
Be + AlH3 + LiCl + HCl
C.
BeH2 + LiCl + AlCl3
D.
BeH2 + Li[AlCl4]
2022 JEE Mains MCQ
JEE Main 2022 (Online) 26th June Evening Shift

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

A.
Li
B.
Na
C.
Rb
D.
Be
2022 JEE Mains MCQ
JEE Main 2022 (Online) 26th June Morning Shift

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
2022 JEE Mains MCQ
JEE Main 2022 (Online) 25th June Morning Shift

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+
2022 JEE Mains MCQ
JEE Main 2022 (Online) 24th June Evening Shift

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
2022 JEE Mains MCQ
JEE Main 2022 (Online) 24th June Evening Shift

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
2022 JEE Mains MCQ
JEE Main 2022 (Online) 24th June Morning Shift

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
2021 JEE Mains MCQ
JEE Main 2021 (Online) 31st August Evening Shift
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)
2021 JEE Mains MCQ
JEE Main 2021 (Online) 31st August Morning Shift
The major component/ingredient of Portland Cement is :
A.
tricalcium aluminate
B.
tricalcium silicate
C.
dicalcium aluminate
D.
dicalcium silicate
2021 JEE Mains MCQ
JEE Main 2021 (Online) 27th August Evening Shift
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.
2021 JEE Mains MCQ
JEE Main 2021 (Online) 27th August Morning Shift
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
2021 JEE Mains MCQ
JEE Main 2021 (Online) 26th August Morning Shift
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
2021 JEE Mains MCQ
JEE Main 2021 (Online) 27th July Evening Shift
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)
2021 JEE Mains MCQ
JEE Main 2021 (Online) 27th July Morning Shift
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
2021 JEE Mains MCQ
JEE Main 2021 (Online) 25th July Evening Shift
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)
2021 JEE Mains MCQ
JEE Main 2021 (Online) 25th July Morning Shift
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.
2021 JEE Mains MCQ
JEE Main 2021 (Online) 22th July Evening Shift
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)
2021 JEE Mains MCQ
JEE Main 2021 (Online) 20th July Morning Shift
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
2021 JEE Mains MCQ
JEE Main 2021 (Online) 20th July Morning Shift
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
2021 JEE Mains MCQ
JEE Main 2021 (Online) 18th March Evening Shift
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)
2021 JEE Mains MCQ
JEE Main 2021 (Online) 18th March Morning Shift
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)
2021 JEE Mains MCQ
JEE Main 2021 (Online) 17th March Evening Shift
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
2021 JEE Mains MCQ
JEE Main 2021 (Online) 17th March Evening Shift
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
2021 JEE Mains MCQ
JEE Main 2021 (Online) 17th March Morning Shift
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+
2021 JEE Mains MCQ
JEE Main 2021 (Online) 16th March Morning Shift
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
2021 JEE Mains MCQ
JEE Main 2021 (Online) 24th February Evening Shift
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)
2020 JEE Mains MCQ
JEE Main 2020 (Online) 6th September Evening Slot
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)
2020 JEE Mains MCQ
JEE Main 2020 (Online) 6th September Morning Slot
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
2020 JEE Mains MCQ
JEE Main 2020 (Online) 4th September Evening Slot
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
2020 JEE Mains MCQ
JEE Main 2020 (Online) 4th September Morning Slot
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
2020 JEE Mains MCQ
JEE Main 2020 (Online) 2nd September Evening Slot
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
2020 JEE Mains MCQ
JEE Main 2020 (Online) 2nd September Morning Slot
The metal mainly used in devising photoelectric cells is :
A.
Na
B.
Rb
C.
Li
D.
Cs
2020 JEE Mains MCQ
JEE Main 2020 (Online) 9th January Evening Slot
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
2020 JEE Mains MCQ
JEE Main 2020 (Online) 8th January Morning Slot
When gypsum is heated to 393 K, it forms :
A.
CaSO4 . 0.5H2O
B.
CaSO4 . 5H2O
C.
Dead burnt plaster
D.
Anhydrous CaSO4
2019 JEE Mains MCQ
JEE Main 2019 (Online) 12th April Evening Slot
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
2019 JEE Mains MCQ
JEE Main 2019 (Online) 12th April Morning Slot
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
2019 JEE Mains MCQ
JEE Main 2019 (Online) 10th April Evening Slot
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.
2019 JEE Mains MCQ
JEE Main 2019 (Online) 10th April Morning Slot
The alloy used in the construction of aircrafts is :
A.
Mg – Zn
B.
Mg – Al
C.
Mg – Mn
D.
Mg – Sn
2019 JEE Mains MCQ
JEE Main 2019 (Online) 9th April Evening Slot
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
2019 JEE Mains MCQ
JEE Main 2019 (Online) 9th April Morning Slot
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
2019 JEE Mains MCQ
JEE Main 2019 (Online) 8th April Morning Slot
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+
2019 JEE Mains MCQ
JEE Main 2019 (Online) 12th January Morning Slot
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
2019 JEE Mains MCQ
JEE Main 2019 (Online) 11th January Evening Slot
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
2019 JEE Mains MCQ
JEE Main 2019 (Online) 11th January Evening Slot
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)
2019 JEE Mains MCQ
JEE Main 2019 (Online) 11th January Morning Slot
The amphoteric hydroxide is :
A.
Ca(OH)2
B.
Be(OH)2
C.
Mg(OH)2
D.
Sr(OH)2
2019 JEE Mains MCQ
JEE Main 2019 (Online) 10th January Evening Slot
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
2019 JEE Mains MCQ
JEE Main 2019 (Online) 10th January Morning Slot
The metal used for marking X–ray tube window is :
A.
Ca
B.
Na
C.
Mg
D.
Be
2019 JEE Mains MCQ
JEE Main 2019 (Online) 9th January Evening Slot
The metal that forms nitride by reacting directly with N2 of air, is :
A.
K
B.
Li
C.
Rb
D.
Cs