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1
JEE Main 2022 (Online) 25th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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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
2
JEE Main 2022 (Online) 30th June Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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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)
3
JEE Main 2022 (Online) 30th June Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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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.
4
JEE Main 2022 (Online) 29th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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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.
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