The strongest reducing agent of the alkali metal is

The word ‘alkali’ is used for alkali metals indicates

When sodium is heated with moist air, then the product obtained is

(A) Na₂O                         (B) NaOH                        (C) Na₂CO₃                         (D) Na₂O₂

Sodium gives blue colour with  solution, this blue due to

(A) Ammoniated Na^⊕                                                         (B) Ammoniated Na^θ
(C) Ammoniated e^–                                                              (D) Na⁺/Na^– pair

Which alkali metal is most metallic in character

The lightest metal is

The reaction of water with sodium and potassium is

A substance X  is a compound of an element of group IA the substance X gives a violet colour in flame test, X is

Characteristic feature of alkali metals is

Which of the following alkali metal ions has lowest ionic mobility in aqueous solution

(A) Rb⁺                                  (B) Cs⁺                                 (C) Li⁺                                    (D) Na⁺

Increasing order of density is

Solution of sodium metal in liquid ammonia is strongly reducing due to the presence in the solution of the following

Which of the following alkali metals has the biggest tendency for the half reaction, M(g) → M⁺(aq) + e^–

On dissolving moderate amount of sodium metal in liquid NH₃ at low temperature, which one of the following does not occur

(A) Blue coloured solution is obtained 
(B) Na⁺ ions are formed in the solution
(C) Liquid NH₃ becomes good conductor of electricity
(D) Liquid ammonia remains diamagnetic

Assertion (A): Potassium and caesium are used in photo-electric cells
Reason (R): Potassium and caesium emit electrons on exposure to light

Mg and Li are similar in their properties due to

If Na is heated in presence of air, it forms

(A) Na₂CO₃                                                    (B) Na₂O₂                           
(C) Na₂O                                                        (D) Both (b) and (c)

Which of the following is most reducing agent

(A) HNO₃                                   (B) Na                              (C) Cl₂                                     (D) Cr

In which of the following processes, fused sodium hydroxide is electrolysed at a 330° C temperature for extraction of sodium