chemistry - 10th - practical chemistry

NAME OF THE STUDENT

Roll NO.

1. What do you observe when NaOH is added to Ferrous sulphate solution in small quantity & then in excess?

• Dirty white ppt. insoluble in excess
• Dirty white ppt. soluble in excess
• Dirty green ppt. insoluble in excess
• Dirty green ppt. soluble in excess

2. Which solution will you use to distinguish Zinc sulphate solution & Lead nitrate solution

• NaOH Solution
• NH4OH solution
• Both the solution
• None of the above solution

3.When NaOH solution is added to a particular solution then a chalky white ppt. is formed which is soluble in excess, Identify the cation

• Calcium ion
• Iron ion
• Silver ion
• Lead ion

4. If the flame of the salt gives a brick red colour then which does it has?

• SODIUM ION
• COPPER ION
• POTASSIUM ION
• CALCIUM ION

5. When NaOH is added to a salt then ammonia gas is evolved , identify the cation.

• Siver ion
• Ammonium ion
• Calcium ion
• Zinc ion