Chemistry Quiz- 5 | My Online Pathshala

1. What type of mixture is smoke ?

(a) Solid mixed with a gas

(b) Gas mixed with a gas

(d) Gas mixed with a liquid and a solid

Correct! Wrong!

Ans. : - (d)

2. A compound that is water vapour from the air is -

(a) sodium nitrate

(b) calcium chloride

(d) calcium sulphate

Correct! Wrong!

Ans. : - (d)

3. Which one among the following will you put into pure water in order to pass electric current through it ?

(a) Kerosene

(b) Mustard oil

(d) Sugar

Correct! Wrong!

Ans. : - (c)

4. Gypsum (CaSO2.2H2O) is added to clinker during cement manufacturing to -

(a) decrease the rate of setting of cement

(b) bind the particles of calcium silicate

(d) impart strength to cement

Correct! Wrong!

Ans. : - (a)

5. Sodium thiosulphate (Na2S2O3) solution is used in photography to -

(a) remove reduced silver

(b) reduce silver bromide (AgBr) grain to silver

(d) convert the metallic silver to silver salt

Correct! Wrong!

Ans. : - (c)

6. Sacrific cacrificial anode protects iron or ships, underground pipelines etc from rusting, a process unown as cathodic protection. Which one of the Following metals cannot be used as a sacrificial anode ?

(a) Tin

(b) Zinc

(d) Aluminium

Correct! Wrong!

Ans. : - (a)

7. Scuba divers are at risk due to high concentration of dissolved gases while breathing air at high pressure under water. The tanks used by Scuba divers are filled with -

(a) air diluted with helium

(b) O2

(d) a mixture of N2 and helium

Correct! Wrong!

Ans. : - (a)

8. Which one among the following has been producing/can produce light by a chemical change ?

(a) Sun

(b) Moon

(d) Lightning and thunder

Correct! Wrong!

Ans. : - (a)

9. Nail polish remover contains -

(a) acetone

(b) benzene

(d) acetic acid

Correct! Wrong!

Ans. : - (a)

10. The rusting of iron nail -

(a) decreases its weight

(b) increases its weight

(d) does not affect weight but iron is reduced

Correct! Wrong!

Ans. : - (b)

1. What type of mixture is smoke ?

2. A compound that is water vapour from the air is -

3. Which one among the following will you put into pure water in order to pass electric current through it ?

4. Gypsum (CaSO2.2H2O) is added to clinker during cement manufacturing to -

5. Sodium thiosulphate (Na2S2O3) solution is used in photography to -

6. Sacrific cacrificial anode protects iron or ships, underground pipelines etc from rusting, a process unown as cathodic protection. Which one of the Following metals cannot be used as a sacrificial anode ?

7. Scuba divers are at risk due to high concentration of dissolved gases while breathing air at high pressure under water. The tanks used by Scuba divers are filled with -

8. Which one among the following has been producing/can produce light by a chemical change ?

9. Nail polish remover contains -

10. The rusting of iron nail -

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