1. Can water dissolve noncompounds?
- (a) Ionic forces
- (b) dipole-dipole forces
- (b) Ionic-dipole forces
- (d) hydrogen bonding
2. All salts cause the water to become hard EXCEPT?
- (a) Calcium chloride
- (b) Magnesium sulfate
- (c) calcium chloride
- (b) calcium bicarbonate chloride
3. The salt which causes temporary hardness in water is?
- (a) Magnesium sulpahte
- (d) calcium bicarbonate
- (b) Magnesium chloride
- (b) calcium bicarbonate
4. Does chlorine act as bleaching age when not in the presence of?
- (a) WI
- (b) NaOH
- (c) H2O
- (d) HNO3
5. The permanent hardness of water is removed by adding?
- (a) Washing soda
- (b) soda lime
- (d) baking soda
- (b) Caustic soda
6. Most aquatic animals cannot survive in the water above.
- (a) 20C
- (b) 25C
- (c) 30C
- (d) 35C
7. The destiny of water maximum at?
- (a) -40C
- (b) 40C
- (c) -4C
- (d) 4C
8. The disease which causes liver infection?
- (a) Hepatitis
- (b) cholera
- (b) Typhoid
- (d) dysentery
9. All are waterborne diseases EXCEPT?
- (a) Hepatitis
- (b) malaria
- (b) Typhoid
- (d) dysentery
10. Water gas is a mixture of?
- (a) CO and H2
- (b) C and H2
- (b) CO and H2O
- (d) C and H2O
11. At 1atm pressure, a liquid 1 has the boiling point less than a liquid 2, what can we predict about both the liquids
- A) Liquid 1 has high vapour pressure than the liquid 2
- B) Liquid 1 has the weak intermolecular forces of attraction than the liquid 2
- C) Liquid 1 is more volatile than the liquid 2
- D) All of the above
12. The distillation of a solution under reduced pressure is called
- A) Fractional distillation
- B) Destructive distillation
- C) Distillation
- D) Vacuum distillation
13. A pressure cooker reduces cooking time because
- A) Large flame is used
- B) Heat is uniformly distributed
- C) Boiling point of water rises
- D) Vapour pressure of the liquid decreases
14. Molar heat of vapourization of water is
- A) 40.6 kJ mol-1
- B) 14.6 kJ mol-1
- C) 140.6 kJ mol-1
- D) Zero
15. Rate of evaporation of a liquid does not depend on
- A) Surface area of liquid
- B) Inter molecular forces
- C) Eternal pressure
- D) Temperature
16. Which one of the following would cause severe burning
- A) Boiling water at 100ᵒC
- B) Boiling water at 80ᵒC
- C) Steam at 100ᵒC
- D) Water at 20ᵒC
17. Which one of the following is a giant molecule
- A) SiO2
- B) CH4
- C) CO2
- D) NH3
18. Molecular crystals are
- A) Hard
- B) Soft
- C) Very hard
- D) Polar
19. The overall structure of diamond looks
- A) Face-centered cubic
- B) Square planer
- C) Tetragonal
- D) Hexagonal
20. Ice occupies more space than liquid water
- A) 10%
- B) 11%
- C) 12%
- D) 9%
21. The crystals formed due to London forces o interaction are
- A) Ionic
- B) Covalent
- C) Molecular
- D) Metallic
22. The number of Cl- ions per unit cell of simple cubic lattice at the corner is/are
- A) 1
- B) 4
- C) 3
- D) 6
23. Ionic solids are characterized by
- A) Low melting point
- B) High vapour pressure
- C) Good conductivity in solid state
- D) Solubility in polar solvent
24. Which is incorrect about structure of iodine
- A) Face-centered cubic
- B) (g) (S)
- C) Metallic appearance
- D) (g) (S)
25. Overall ratio of silicon to oxygen atoms in silicon (IV) oxide is
- A) 1 : 4
- B) 1 : 2
- C) 4 : 1
- D) 2 : 1
| Test 1 | Test 2 | Test 3 | Test 4 | Test 5 |
| Test 6 | Test 7 | Test 8 | Test 9 | Test 10 |
