Question

4 Choose the correct answer from the options given below: [13]

1. When iron (III) chloride solution is treated with ammonium hydroxide solution, the colour of precipitate is :

(a) dirty green (b) blue (c) reddish brown (d) white

2. Which one is a soluble oxide?

(a) CuO (b) ZnO (c) A12O3 (d) Na2O

3. A salt which does not contain any water of crystallisation is called :

(a) Dry salt (b) dehydrated salt (c) anhydrous salt (d) all the above

4. The degree of ionisation of acetic acid is 4%. Therefore, acetic acid is a :

(a) dilute acid (b) strong acid (c) weak acid (d) concentrated acid

5. Which is not an oxy-acid?

(a) nitric acid (b) sulphuric acid (c) phosphoric acid (d) hydrochloric acid

6. Which one is the deliquescent salt?

(a) ferric chloride (b) copper sulphate crystals (c) calcium oxide (d) sodium nitrate

7. Which is not an acidic salt?

(a) NaHSO4 (b) K2SO4 (c) NaHCO3 (d) NH4H2PO4

8. Which one a double salt?

(a) NaKSO4 (b) Na[Ag(CN)2] (c) CaOCl2 (d) K2SO4.A12(SO)3.24H2O

9. Which one is a mixed salt?

(a) FeSO4.7H2O (b) Na2KPO4 (c) K4[Fe(CN)6] (d) FeSO4.(NH4)2SO4.6H2O​

Answer 1

Answer:

1.reddish brown

2.zno

3.all of the above

4.concentrated acid

5.hcl

6.ferric oxide