SSC
CHEMISTRY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
A small piece of sodium is burnt in excess air. The residue formed is dissolved in water to form a colourless solution R. The colourless solution R can
|
|
turn red litmus paper blue
|
|
|
react with copper(II) oxide
|
|
|
react with dilute sulphuric acid
|
|
|
react with magnesium powder
|
Explanation:
Detailed explanation-1: -A salt D on treatment with Dilute Sulphuric acid produces a gas which turns lime water milky but no effect on acidified potassium chromate solution.
Detailed explanation-2: -Sodium Carbonate reacts with dilute sulphuric acid to give the respective salt, water and carbon dioxide.
Detailed explanation-3: -Calcium, strontium and barium When exposed to sulfuric acid, a layer of insoluble sulfate is formed on each of these metals, slowing or stopping the reaction entirely.
There is 1 question to complete.