Chemistry MCQs for NEET — Practice Questions with Answers

Na₂O

Na₂O₂

NaNO₃

KNO₃

Lithium is the strongest reducing agent

Density of potassium is more than sodium

Cs is used in devising photoelectric cells.

All alkali metals give blue solution in liquid ammonia

Rb⁺

Na⁺

K⁺

Li⁺

LiCl

CsCl

NaCl

KCl

I.P.

EN

Atomic radius

Hydration energy of univalent ion

hydrolysis of Na+

hydrolysis of ${\mathrm{CO}}_3^{2-}$

hydrolysis of Na+ and ${\mathrm{CO}}_3^{2-}$ions

none of these

They are deep blue coloured solutions.

They are highly conducting in nature.

They are diamagnetic in nature.

Ammoniated cations and ammoniated anions are formed in a solution.

Basic strength of oxides                                 ${\mathrm{Cs}}_2\mathrm{O}<{\mathrm{Rb}}_2\mathrm{O}<{\mathrm{K}}_2\mathrm{O}<{\mathrm{Na}}_2\mathrm{O}<{\mathrm{LiO}}_2$

Stability of peroxides                                      ${\mathrm{Na}}_2\mathrm{O} <{\mathrm{K}}_2{\mathrm{O}}_2<{\mathrm{Rb}}_2{\mathrm{O}}_2<{\mathrm{Cs}}_2{\mathrm{O}}_2$

Stability of bicarbonate                                   ${\mathrm{LiHCO}}_3<{\mathrm{NaHCO}}_3<{\mathrm{KHCO}}_3<{\mathrm{RbHCO}}_3<\mathrm{Cs} {\mathrm{HCO}}_3$

Melting Point                                                  $\mathrm{NaF}<\mathrm{NaCl}<\mathrm{NaBr}<\mathrm{Nal}$

(A) 1 and 4                                           

(B) 1 and 3

(C) 1 and 2                                           

(D) 2 and 3

 $\mathrm{NaOH}$                                             

 ${\mathrm{Na}}_2{\mathrm{SO}}_4$

 $\mathrm{NaCl}$                                               

 $\mathrm{Na} {\mathrm{HCO}}_3$

Reaction of superoxide with nitrogen in the exhaled air.

Reaction of superoxide with moisture in the exhaled air.

Reaction of superoxide with carbon dioxide in the exhaled air

(A) (1), (2) and (3)                                       

(B) (2) and (3) only

(C) (2) only                                                 

(1) and (2) only