2025
Q1
NEET
MCQ
10 Mar 2026
Which one of the following reactions does NOT belong to "Lassaigne's test"?
A.
$\mathrm{Na}+\mathrm{X} \xrightarrow[\Delta]{ }+\mathrm{NaX}$
B.
$2 \mathrm{CuO}+\mathrm{C} \xrightarrow[\Delta]{ } 2 \mathrm{Cu}+\mathrm{CO}_2$
C.
$\mathrm{Na}+\mathrm{C}+\mathrm{N} \underset{\Delta}{\longrightarrow} \mathrm{NaCN}$
D.
$2 \mathrm{Na}+\mathrm{S} \underset{\Delta}{\longrightarrow} \mathrm{Na}_2 \mathrm{~S}$
2023
Q2
NEET
MCQ
10 Mar 2026
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Lithium and beryllium unlike their other respective group members form compounds with pronounced ionic character.
Reason (R) : Lithium and Magnesium have similar properties due to diagonal relationship.
In the light of the above statements, choose the correct 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 and (R) is the correct explanation of (A).
D.
Both (A) and (R) are true but (R) is not the correct explanation of (A).
2023
Q3
NEET
MCQ
10 Mar 2026
Given below are two statements : one is labelled as Assertion $\mathbf{A}$ and the other is labelled as Reason $\mathbf{R}$ :
Assertion A : Metallic sodium dissolves in liquid ammonia giving a deep blue solution, which is paramagnetic.
Reason R : The deep blue solution is due to the formation of amide.
In the light of the above statements, choose the correct answer from the options given below :
A.
Both $\mathbf{A}$ and $\mathbf{R}$ are true but $\mathbf{R}$ is NOT the correct explanation of $\mathbf{A}$.
B.
$\mathbf{A}$ is true but $\mathbf{R}$ is false
C.
$\mathbf{A}$ is false but $\mathbf{R}$ is true
D.
Both $\mathbf{A}$ and $\mathbf{R}$ are true and $\mathbf{R}$ is the correct explanation of $\mathbf{A}$.
2023
Q4
NEET
MCQ
10 Mar 2026
Which one of the following statements is correct?
A.
All enzymes that utilise ATP in phosphate transfer require $\mathrm{Ca}$ as the cofactor.
B.
The bone in human body is an inert and unchanging substance.
C.
$\mathrm{Mg}$ plays roles in neuromuscular function and interneuronal transmission.
D.
The daily requirement of $\mathrm{Mg}$ and $\mathrm{Ca}$ in the human body is estimated to be 0.2 - 0.3 $\mathrm{g}$.
2023
Q5
NEET
MCQ
10 Mar 2026
Weight (g) of two moles of the organic compound, which is obtained by heating sodium ethanoate with sodium hydroxide in presence of calcium oxide is :
A.
32
B.
30
C.
18
D.
16
2022
Q6
NEET
MCQ
10 Mar 2026
The element used for welding metals with high melting points is
A.
He
B.
Cl2
C.
H2
D.
Ne
2022
Q7
NEET
MCQ
10 Mar 2026
CaCl2 and Ca(OCl)2 are components of
A.
Lime water
B.
Gypsum
C.
Portland cement
D.
Bleaching powder
2022
Q8
NEET
MCQ
10 Mar 2026
Which one of the following is not a calcination reaction?
A.
CaCO3 + 2HCl $\buildrel \Delta \over
\longrightarrow $ CaCl2 + H2O + CO2
B.
ZnCO3 $\buildrel \Delta \over
\longrightarrow $ ZnO + CO2
C.
Fe2O3 . xH2O $\buildrel \Delta \over
\longrightarrow $ Fe2O3 + xH2O
D.
CaCO3 . MgCO3 $\buildrel \Delta \over
\longrightarrow $ CaO + MgO + 2CO2
2022
Q9
NEET
MCQ
10 Mar 2026
Identify the incorrect statement from the following
A.
Alkali metals react with water to form their hydroxides.
B.
The oxidation number of K in KO2 is +4.
C.
Ionisation enthalpy of alkali metals decreases from top to bottom in the group.
D.
Lithium is the strongest reducing agent among the alkali metals.
2022
Q10
NEET
MCQ
10 Mar 2026
Match List - I with List - II
| List - I | List - II | ||
|---|---|---|---|
| (a) | Li | (i) | absorbent for carbon dioxide |
| (b) | Na | (ii) | electrochemical cells |
| (c) | KOH | (iii) | coolant in fast breeder reactors |
| (d) | Cs | (iv) | photoelectric cell |
Choose the correct answer from the options given below :
A.
(a) - (iv), (b) - (i), (c) - (iii), (d) - (ii)
B.
(a) - (iii), (b) - (iv), (c) - (ii), (d) - (i)
C.
(a) - (i), (b) - (iii), (c) - (iv), (d) - (ii)
D.
(a) - (ii), (b) - (iii), (c) - (i), (d) - (iv)
2021
Q11
NEET
MCQ
10 Mar 2026
Among the following alkaline earth metal halides, one which is covalent and soluble in organic solvents is :
A.
Beryllium chloride
B.
Calcium chloride
C.
Strontium chloride
D.
Magnesium chloride
2021
Q12
NEET
MCQ
10 Mar 2026
The structures of beryllium chloride in solid state and vapour phase, are :
A.
Chain in both
B.
Chain and dimer, respectively
C.
Linear in both
D.
Dimer and Linear, respectively
2020
Q13
NEET
MCQ
10 Mar 2026
The following metal ion activities many enzymes, participates in the oxidation of glucose to produce ATP and with Na, is responsible for the transmission of nerve signals.
A.
Copper
B.
Calcium
C.
Potassium
D.
Iron
2020
Q14
NEET
MCQ
10 Mar 2026
HCl was passed through A solution of CaCl2, MgCl2 and NaCl. Which of the following compound(s) crystallize(s)?
A.
Only NaCl
B.
Only MgCl2
C.
NaCl, MgCl2 and CaCl2
D.
Both MgCl2 and CaCl2
2019
Q15
NEET
MCQ
10 Mar 2026
Which of the following is an amphoteric hydroxide?
A.
Mg(OH)2
B.
Be(OH)2
C.
Sr(OH)2
D.
Ca(OH)2
2019
Q16
NEET
MCQ
10 Mar 2026
Enzymes that utilize ATP is phosphate transfer require an alkaline earth metal (M) as the cofactor. M is
A.
Ca
B.
Sr
C.
Be
D.
Mg
2018
Q17
NEET
MCQ
10 Mar 2026
Magnesium reacts with an element (X) to form
an ionic compound. If the ground state
electronic configuration of (X) is 1s22s22p3,
the simplest formula for this compound is
A.
Mg2X3
B.
MgX2
C.
Mg2X
D.
Mg3X2
2018
Q18
NEET
MCQ
10 Mar 2026
Among CaH2
, BeH2
, BaH2
, the order of ionic
character is
A.
BeH2
< CaH2
< BaH2
B.
CaH2
< BeH2
< BaH2
C.
BeH2
< BaH2
< CaH2
D.
BaH2
< BeH2
< CaH2
2017
Q19
NEET
MCQ
10 Mar 2026
Ionic mobility of which of the following alkali metal ions is lowest when aqueous solution of their salts are put under an electric field?
A.
K
B.
Rb
C.
Li
D.
Na
2016
Q20
NEET
MCQ
10 Mar 2026
In context with beryllium, which one of the following statements is incorrect?
A.
It is rendered passive by nitric acid.
B.
It forms Be2C
C.
Its salts rarely hydrolyze.
D.
Its hydride is electron-deficient and polymeric.
2016
Q21
NEET
MCQ
10 Mar 2026
The suspension of slaked lime in water is known as
A.
lime water
B.
quick lime
C.
milk of lime
D.
aqueous solution of slaked lime.
2016
Q22
NEET
MCQ
10 Mar 2026
The product obtained as a result of a reaction of nitrogen with CaC2 is
A.
CaCN2
B.
Ca2CN
C.
Ca(CN)2
D.
CaCN
2016
Q23
NEET
MCQ
10 Mar 2026
Which of the following statments is false?
A.
Ca2+ ions are not important in maintaining the regular beating of the heart.
B.
Mg2+ ions are important in the green parts of the plants.
C.
Mg2+ ions form a complex with ATP.
D.
Ca2+ ions are important in blood clotting.
2015
Q24
NEET
MCQ
10 Mar 2026
20.0 g of a magnesium carbonate sample decomposes on heating to give carbon dioxide and 8.0 g magnesium oxide. What will be the percentage purity of magnesium carbonate in the sample?
(At. wt. of Mg = 24)
(At. wt. of Mg = 24)
A.
96
B.
60
C.
84
D.
75
2015
Q25
NEET
MCQ
10 Mar 2026
On heating which of the following releases CO2 most easily?
A.
Na2CO3
B.
MgCO3
C.
CaCO3
D.
K2CO3
2015
Q26
NEET
MCQ
10 Mar 2026
The function of ''Sodium pump'' is a biological process operating in each and every cell of all animals. Which of the following biologically important ions is also a constituent of this pump?
A.
K+
B.
Fe2+
C.
Ca2+
D.
Mg2+
2015
Q27
NEET
MCQ
10 Mar 2026
Solubility of the alkaline earth metal sulphates in water decreases in the sequence
A.
Sr > Ca > Mg > Ba
B.
Ba > Mg > Sr > Ca
C.
Mg > Ca > Sr > Ba
D.
Ca > Sr > Ba > Mg
2013
Q28
NEET
MCQ
10 Mar 2026
In Castner-Kellner cell for production of sodium hydroxide
A.
brine is electrolyzed using graphite electrodes
B.
molten sodium chloride is electrolysed
C.
sodium amalgam is formed at mercury cathode
D.
brine is electrolyzed with Pt electrodes
2012
Q29
NEET
MCQ
10 Mar 2026
Which one of the alkali metals, forms only, the normal oxide, M2O on heating in air?
A.
Rb
B.
K
C.
Li
D.
Na
2012
Q30
NEET
MCQ
10 Mar 2026
The ease of adsorption of the hydrated alkali metal ions on an ion-exchange resins follows the order :
A.
Li+ < K+ < Na+ < Rb+
B.
Rb+ < K+ < Na+ < Li+
C.
K+ < Na+ < Rb+ < Li+
D.
Na+ < Li+ < K+ < Rb+
2011
Q31
NEET
MCQ
10 Mar 2026
Match List-I with List-II for the compositions of substances and select the correct answer using the code given above.
| List-I (Substances) |
List-II (Composition) |
||
|---|---|---|---|
| (A) | Plaster of Pairs | (i) | CaSO4$ \cdot $2H2O |
| (B) | Epsomite | (ii) | CaSO4$ \cdot $1/2 H2O |
| (C) | Kieserite | (iii) | MgSO4$ \cdot $7H2O |
| (D) | Gypsum | (iv) | MgSO4$ \cdot $H2O |
| (v) | CaSO4 | ||
A.
(A)-(iii), (B)-(iv), (C)-(i), (D)-(ii)
B.
(A)-(ii), (B)-(iii), (C)-(iv), (D)-(i)
C.
(A)-(i), (B)-(ii), (C)-(iii), (D)-(iv)
D.
(A)-(iv), (B)-(iii), (C)-(ii), (D)-(i)
2011
Q32
NEET
MCQ
10 Mar 2026
Which one of the following is present as an active ingredient in bleaching powder for bleaching action?
A.
CaOCl2
B.
Ca(OCl)2
C.
CaO2Cl
D.
CaCl2
2011
Q33
NEET
MCQ
10 Mar 2026
Which of the following compounds has the lowest melting point?
A.
CaCl2
B.
CaBr2
C.
CaI2
D.
CaF2
2010
Q34
NEET
MCQ
10 Mar 2026
The compound A on heating gives a colourless gas and a residue that is dissolved in water to obtain B. Excess of CO2 is bubbled through aqueous solution of B, C is formed which is recovered in the solid form. Solid C on gentle heating gives back A. The compound is
A.
CaCO3
B.
Na2CO3
C.
K2CO3
D.
CaSO4$ \cdot $2H2O
2010
Q35
NEET
MCQ
10 Mar 2026
Which one of the following compounds is a peroxide?
A.
KO2
B.
BaO2
C.
MnO2
D.
NO2
2010
Q36
NEET
MCQ
10 Mar 2026
Which of the following alkaline earth metal sulphates has hydration enthalpy higher than the lattice enthalpy?
A.
CaSO4
B.
BeSO4
C.
BaSO4
D.
SrSO4
2010
Q37
NEET
MCQ
10 Mar 2026
Property of the alkaline earth metals that increases with their atomic number
A.
solubility of their hydroxides in water
B.
solubility of their sulphates in water
C.
ionization energy
D.
electronegativity
2009
Q38
NEET
MCQ
10 Mar 2026
Which of the following oxides is not expected to react with sodium hydroxide?
A.
CaO
B.
SiO2
C.
BeO
D.
B2O3
2009
Q39
NEET
MCQ
10 Mar 2026
In the case of alkali metals, the covalent character decreases in the order
A.
MF > MCl > MBr > MI
B.
MF > MCl > MI > MBr
C.
MI > MBr > MCl > MF
D.
MCl > MI > MBr > MF
2008
Q40
NEET
MCQ
10 Mar 2026
Equimolar solutions of the following were prepared in water separately. Which one of the solutions will record the highest pH?
A.
MgCl2
B.
CaCl2
C.
SrCl2
D.
BaCl2
2008
Q41
NEET
MCQ
10 Mar 2026
The sequence of ionic mobility in aqueous solution is
A.
Rb+ > K+ > Cs+ > Na+
B.
Na+ > K+ > Rb+ > Cs+
C.
K+ > Na+ > Rb+ > Cs+
D.
Cs+ > Rb+ > K+ > Na+
2008
Q42
NEET
MCQ
10 Mar 2026
The alkali metals form salt-like hydrides by the direct synthesis at elevated temperature. The thermal stability of these hydrides decreases in which of the following orders?
A.
NaH > LiH > KH > RbH > CsH
B.
LiH > NaH > KH > RbH > CsH
C.
CsH > RbH > KH > NaH > LiH
D.
KH > NaH > LiH > CsH > RbH
2007
Q43
NEET
MCQ
10 Mar 2026
The correct order of increasing thermal stability of K2CO3, MgCO3, CaCO3 and BeCO3 is
A.
BeCO3 < MgCO3 < CaCO3 < K2CO3
B.
MgCO3 < BeCO3 < CaCO3 < K2CO3
C.
K2CO3 < MgCO3 < CaCO3 < BeCO3
D.
BeCO3 < MgCO3 < K2CO3 < CaCO3
2007
Q44
NEET
MCQ
10 Mar 2026
In which of the following the hydration energy is higher than the lattice energy?
A.
MgSO4
B.
RaSO4
C.
SrSO4
D.
BaSO4
2006
Q45
NEET
MCQ
10 Mar 2026
The correct order of the mobility of the alkali metal ions in aqueous solution is
A.
Rb+ > K+ > Na+ > Li+
B.
Li+ > Na+ > K+ > Rb+
C.
Na+ > K+ > Rb+ > Li+
D.
K+ > Rb+ > Na+ > Li+
2004
Q46
NEET
MCQ
10 Mar 2026
A solid compound X on heating gives CO2 gas and a residue. The residue mixed with water forms Y. On passing an excess of CO2 through Y in water, a clear solution Z is obtained. On boiling Z, compound X is reformed. The compound X is
A.
Ca(HCO3)2
B.
CaCO3
C.
Na2CO3
D.
K2CO3
2002
Q47
NEET
MCQ
10 Mar 2026
In which of the following processes, fused sodium hydroxide is electrolysed at a 330oC temperature for extraction of sodium?
A.
Castner's process
B.
Down's process
C.
Cyanide process
D.
Both 'b' and 'c'