Chemistry 9 Chapter 1 Practice Test 2

Chemistry 9 Chapter 1 Practice Test 2


Class 9 Chemistry

Chapter 1

Branches of Chemistry

Practice MCQs Test 2

1 / 16

Sulphuric acid (H2 SO4) is extremely corrosive to skin.

2 / 16

Calorimeter is a device that measures the amount of heat, a substance absorbs on heating or emits on cooling.

3 / 16

Plantation helps in overcoming the greenhouse effect.

4 / 16

Element radium decays by emitting α-particles and is converted into another element radon.

5 / 16

Acetylene is the simplest hydrocarbon that contains a carbon-carbon triple bond. Hydrocarbons are the compounds of carbon and hydrogen.

6 / 16

α-particles (He++) when bombard on nitrogen atom, a proton is emitted.

7 / 16

A chemist performed an experiment to check the percentage purity of a sample of glucose (C6 H12 O6).

8 / 16

Haber’s process converts large quantities of hydrogen and nitrogen into ammonia (NH3 ).

9 / 16

Ammonia is a colourless gas with a pungent irritating odour. It is highly soluble in water.

10 / 16

White lead is a pigment used by artists for centuries, the metal Pb in the compound is extracted from its ore, galena (PbS).

11 / 16

Hair contain a special class of proteins called keratins, which are present in nails and wool. Proteins contain chains of C-atoms.

12 / 16

Photosynthesis produces glucose and oxygen from carbon dioxide and water in presence of chlorophyll and sunlight.

13 / 16

Gases can be compressed by applying pressure.

14 / 16

Some examples of complete protein food are meat, milk, and eggs.

15 / 16

Chlorofluorocarbon compounds are responsible for the depletion of ozone layer.

16 / 16

An analyst determines that NO2 is responsible for acid rain.

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