← Back to Chemistry

s-Block Elements

123 Questions Start JEE Mains Test
All Exams JEE Mains JEE Advanced TS-EAMCET AP-EAPCET BITSAT
2019 Q101 JEE Mains MCQ
14 Mar 2026
The amphoteric hydroxide is :
A.
Ca(OH)2
B.
Be(OH)2
C.
Mg(OH)2
D.
Sr(OH)2
2019 Q102 JEE Mains MCQ
14 Mar 2026
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 Q103 JEE Mains MCQ
14 Mar 2026
The metal used for marking X–ray tube window is :
A.
Ca
B.
Na
C.
Mg
D.
Be
2019 Q104 JEE Mains MCQ
14 Mar 2026
The metal that forms nitride by reacting directly with N2 of air, is :
A.
K
B.
Li
C.
Rb
D.
Cs
2019 Q105 JEE Mains MCQ
14 Mar 2026
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
2017 Q106 JEE Mains MCQ
14 Mar 2026
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
2016 Q107 JEE Mains MCQ
14 Mar 2026
The commercial name for calcium oxide is :
A.
Milk of lime
B.
Slaked lime
C.
Limestone
D.
Quick lime
2016 Q108 JEE Mains MCQ
14 Mar 2026
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
2016 Q109 JEE Mains MCQ
14 Mar 2026
Which of the following atoms has the highest first ionization energy?
A.
Na
B.
K
C.
Sc
D.
Rb
2016 Q110 JEE Mains MCQ
14 Mar 2026
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
2016 Q111 JEE Mains MCQ
14 Mar 2026
The hottest region of Bunsen flame shown in the figure below is :

JEE Main 2016 (Offline) Chemistry - s-Block Elements Question 108 English
A.
region $1$
B.
region $2$
C.
region $3$
D.
region $4$
2015 Q112 JEE Mains MCQ
14 Mar 2026
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
2014 Q113 JEE Mains MCQ
14 Mar 2026
The metal that cannot be obtained by electrolysis of an aqueous solution of its salts is :
A.
Cu
B.
Cr
C.
Ag
D.
Ca
2012 Q114 JEE Mains MCQ
14 Mar 2026
Which of the following on thermal decomposition yields a basic as well as an acidic oxide?
A.
NaNO3
B.
KClO3
C.
CaCO3
D.
NH4NO3
2006 Q115 JEE Mains MCQ
14 Mar 2026
The ionic mobility of alkali metal ions in aqueous solution is maximum for :
A.
K+
B.
Rb+
C.
Li+
D.
Na+
2005 Q116 JEE Mains MCQ
14 Mar 2026
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
2004 Q117 JEE Mains MCQ
14 Mar 2026
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
2003 Q118 JEE Mains MCQ
14 Mar 2026
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
2003 Q119 JEE Mains MCQ
14 Mar 2026
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
2003 Q120 JEE Mains MCQ
14 Mar 2026
The substance not likely to contain CaCO3 is :
A.
calcined gypsum
B.
sea shells
C.
dolomite
D.
a marble statue
2002 Q121 JEE Mains MCQ
14 Mar 2026
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
2002 Q122 JEE Mains MCQ
14 Mar 2026
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
2002 Q123 JEE Mains MCQ
14 Mar 2026
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