Chemistry MCQs Test 9

1. Can water dissolve noncompounds?

  • (a) Ionic forces
  • (b) dipole-dipole forces
  • (b) Ionic-dipole forces
  • (d) hydrogen bonding
See Answer
(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
See Answer
(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
See Answer
(b) calcium bicarbonate

4. Does chlorine act as bleaching age when not in the presence of?

  • (a) WI
  • (b) NaOH
  • (c) H2O
  • (d) HNO3
See Answer
(c) H2O

5. The permanent hardness of water is removed by adding?

  • (a) Washing soda
  • (b) soda lime
  • (d) baking soda
  • (b) Caustic soda
See Answer
(a) Washing soda

6. Most aquatic animals cannot survive in the water above.

  • (a) 20C
  • (b) 25C
  • (c) 30C
  • (d) 35C
See Answer
(c) 30C  

7. The destiny of water maximum at?

  • (a) -40C
  • (b) 40C
  • (c) -4C
  • (d) 4C
See Answer
(d) 4C

8. The disease which causes liver infection?

  • (a) Hepatitis
  • (b) cholera
  • (b) Typhoid
  • (d) dysentery
See Answer
(a) Hepatitis 

9. All are waterborne diseases EXCEPT?

  • (a) Hepatitis
  • (b) malaria
  • (b) Typhoid
  • (d) dysentery
See Answer
(b) malaria

10. Water gas is a mixture of?

  • (a) CO and H2
  • (b) C and H2
  • (b) CO and H2O
  • (d) C and H2O
See Answer
(a) CO and H2

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
See Answer
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
See Answer
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
See Answer
C) Boiling point of water rises

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
See Answer
A) 40.6 kJ mol-1

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
See Answer
C) Eternal pressure

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
See Answer
C) Steam at 100ᵒC

17. Which one of the following is a giant molecule

  • A) SiO2
  • B) CH4
  • C) CO2
  • D) NH3
See Answer
A) SiO2

18. Molecular crystals are

  • A) Hard
  • B) Soft
  • C) Very hard
  • D) Polar
See Answer
B) Soft

19. The overall structure of diamond looks

  • A) Face-centered cubic
  • B) Square planer
  • C) Tetragonal
  • D) Hexagonal
See Answer
A) Face-centered cubic

20. Ice occupies more space than liquid water

  • A) 10%
  • B) 11%
  • C) 12%
  • D) 9%
See Answer
D) 9%

21. The crystals formed due to London forces o interaction are

  • A) Ionic
  • B) Covalent
  • C) Molecular
  • D) Metallic
See Answer
C) Molecular

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
See Answer
A) 1

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
See Answer
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)
See Answer
B) (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
See Answer
B) 1 : 2
Test 1 Test 2 Test 3 Test 4 Test 5
Test 6 Test 7 Test 8 Test 9 Test 10

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