Chemistry MCQ’s Quiz Questions for Competitive Exams with Answers VOL 6

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. The common battery used in automobiles is ________?

(a) Iron storage battery
(b) Copper storage battery
(c) Lead storage battery
(d) Silver storage battery

2. Which acid is present in sour milk _________?

(a) Citric acid
(b) Tartaric acid
(c) Lactic acid
(d) Formic acid

3. The water that can produce good lather with soap is known as________?

(a) Soft water
(b) Hard water
(c) Heavy water
(d) Atomic water

4. Which of the following is/are purest form of carbon?

(a) Diamond
(b) Graphite
(c) Bucky ball
(d) Marble

5. The glitter of diamond is__________?

(a) Because it is transparent
(b) Because it is a nonconductor
(c) Due to its quality of reflecting light
(d) Because of its density

6. In colourful diamond, different colours are present due to_______?

(a) Impurities
(b) Angular bonds between the carbon atoms
(c) Different patterns of carbon chains
(d) None of the above

7. All of the followings are different uses of hydrogen peroxide except________?

(a) Used as bleaching agent
(b) Used to deodour sewers
(c) Used as fuel in space
(d) Used to prepare organic peroxides

8. Ozone is present in which of the following layers of atmosphere________?

(a) Troposphere and Thermosphere
(b) Troposphere and Stratosphere
(c) Mesosphere
(d) Thermosphere

9. In Pakistan and other countries which of the following methods is used in manufacture of sulphuric acid?

(a) Contact process
(b) Frasch method
(c) Ostwalds method
(d) Haber’s process

10. The process of smelting and cooling converts pig iron into______?

(a) Silicon Steel
(b) Cast iron
(c) Wrought iron
(d) Steel

11. Pure iron is obtained by the reduction of which of the followings in the blast furnace?

(a) Haematite
(b) Megnetite
(c) iron oxide
(d) Limonite

12. Methane is used in daily life with the name of ________?

(a) Carbon dioxide
(b) Natural gas
(c) Carbon monoxide
(d) Calcium carbonate

13. When electricity is passed through neon it glows________?

(a) Blue
(b) Green
(c) Red
(d) Yellow

14. Argon and which gas is used in various types of flourescent and phototubes?

(a) Oxygen
(b) Helium
(c) Neon
(d) Krypton

15. Enzymes are_________?

(a) Chemical catalyst
(b) Biological catalyst
(c) Organic catalyst
(d) Inorganic catalyst

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