Question

A metal M readily forms water soluble sulphate MSO4, water insoluble hydroxide M(OH)2 and oxide MO which becomes inert on heating. The hydroxide is soluble in NaOH. The metal M is

Solution

Correct option is

Be

BeO being amphoteric dissolves in NaOH.

SIMILAR QUESTIONS

Q1

The product, which is not formed when sodium thiosulphate is added to a natural solution of potassium permanganate, is

Q2

The pair of compound which can exist together in aqueous solution is

Q3

Which pair does not show hydrogen isotopes?

Q4

 

An unknown inorganic compound (X) loses its water of crystallization on heating and its aqueous solution gives the following reactions:

(a)  It gives a white turbidity with dilute HCl solution

(b) It decolourises a solution of iodine in potassium iodide

(c)  It gives a white precipitate with silver nitrate solution which turns black on standing.

Identify the compound (X)

Q5

In photography, sodium thiosulphate is used for

Q6

Which of the following anhydrous halides can be prepared by heating its hydrates form?

Q7

 

The solubility in water of sulphates down the Be group is:

Be > Mg > Ca > Sr > Ba. This is due to

Q8

Which of the following is the correct order of gradually decreasing basic nature of the oxides?

Q9

KO2 (potassium superoxide) is used in oxygen cylinders in space and submarnies because it 

Q10

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