Qualitative analysis-1

1. Qualitative analysis of a salt means...

• Finding out the acidic radicals present in it.

• Finding out the basic radicals present in it.

• Both

• None of the these

2. For preliminary tests of a sample we check...

• Colour

• Nature

• Odour

• Solubility

What is the formula of sodium nitroprusside?

4. What would you do if dilute acid spills and falls on your fingers?

5. How would you check the odour of an amorphous sample?

6. Sulphide and Carbonate are the only dilute acid radicals.....

• Agree

• Strongly agree

• Others are there

• Donot agree

7. If there is a lot of smoke and foul smelling gases in the laboratory, what would you immediately do?

8. Carbonate radical turns lime water milky because...

• Of formation of Calcium hydroxide

• Of formation of Sodium hydroxide

• Of formation of Calcium carbonate

• Of formation of lime water milky

9. Lead acetate paper turns black due to formation of..

• PbS

• Na2S

• PbSO4

• Pb2S

10. What is the unique characteristics of Carbon dioxide gas?

• Evolution of bubbles of gases.

• Evolution of brisk effervescence of gases.

• Evolution of brisk effervescence of colourless odourless gas.

• Evolution of colourless odourless gas with brisk effervescence which doesnot support combustion.