Chemistry MCQ’s Quiz Questions for Competitive Exams with Answers VOL 7

Chemistry MCQ’s Quiz Questions for NTS, PPSC, CSS, FPSC, PMS, OTS, PTS Tests and Interviews. MCQs are taken from Caravan Comprehensive book. These Multiple Choice Questions of Chemistry are posted here for preparation of Job tests and Entry tests like MCAT and ECAT etc.

1. Atomic weight of uranium is__________?

(a) 237
(b) 238
(c) 226
(d) 242

2. Which among the following is in liquid state at normal room temperature?

(a) Mercury
(b) Sodium
(c) Phosphorus
(d) None of these

3. Which of the following gases is used in cigarette lighters?

(a) Butane
(b) Methane
(c) Propane
(d) Radon

4. Liquefied petroleum gas (LPG) consists of__________?

(a) Butane and propane
(b) Ethane and hexane
(c) Ethane and nonane
(d) None of these

5. Which of the following is fire resistant?

(a) Asbestos
(b) Gypsum
(c) Dolomite
(d) None of these

6. Which of the following is used for silvering of mirrors?

(a) Silver nitrate
(b) Zinc nitrate
(c) Silver oxide
(d) Pitchblende

7. Raw materials used for manufacture of glass are ________?

(a) Sand/soda/limestone
(b) Sand/charcoal/soda
(c) Limestone/charcoal/sulphur
(d) Sand/sulphur/soda

8. Solder is an alloy of _______?

(a) Tin and lead
(b) Tin and zinc
(c) Zinc and lead
(d) Zinc and copper

9. Why does milk curdle?

(a) Fermentation of lactose
(b) Reaction of microbes
(c) Over heating
(d) Fungus growth

10. Which of the following is the lightest gas?

(a) Nitrogen
(b) Hydrogen
(c) Ammonia
(d) Carbon dioxide

11. In vulcanisation, natural rubber is heated with?

(a) Carbon
(b) Sulphur
(c) Silicon
(d) Phosphorus

12. Which one of the following does not wet the walls of the glass vessel in which it is kept?

(a) Water
(b) Alcohol
(c) Mercury
(d) None of these

13. Dialysis is used for people with defective kidneys. It involves the process of?

(a) Adsorption
(b) Osmosis
(c) Electrophoresis
(d) Diffusion

14. The substance coated on plastic tape-recorder tapes is________?

(a) Zinc oxide
(b) Manganese oxide
(c) Iron sulphate
(d) Iron oxide

15. Which form of phosphorus is used in safety matches?

(a) White phosphorus
(b) Yellow phosphorus
(c) Red phosphorus
(d) Black phosphorus

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