Chemistry MCQ – Series 2

Chemistry MCQ – Series 2

Practice Set Number

1) Tritium is an isotope of _

a) Oxygen

b) Hydrogen

c) Phosphorus

d) Nitrogen

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Option -b)

2) The number of unpaired electrons in carbon atom is _

a) 2

b) 4

c) 1

d) 3

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Option -a)

3) Cathode rays are _

a) Electromagnetic wave

b) Stream of a-particle

c) Stream of electrons

d) Radiations

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Option – c)

4) Neutron was discovered by _

a) J.J. Thomson

b) Chadwick

c) Rutherford

d) Priestley

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Option -b)

5) Isotopes of the atoms of same element have _

a) Same number of neutrons

b) Same number of protons

c) Same atomic mass

d) Different chemical properties

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Option -b)

6) Rutherford’s a-scattering experiment related to the size of the _

a) Nucleus

b) Atom

c) Electron

d) Neutron

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Option -a)

7) Neutrino has –

a) Charge + 1 , mass 1

b) Charge 0,mass 0

c) Charge -1, mass 1

d) Charge 0, mass 1

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Option -b)

8) Positive iron are formed from neutral atoms by loss of _

a) Neutrons

b) Protons

c) Nuclear charge

d) Electrons

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Option -d)

9) Which one of the following is an element?

a) Alumina

b) Brass

c) Graphite

d) Silicon

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Option -d)

10) Formation of cation occurs by_

a) gain of electrons

b) loss of electrons

c) gain of proton

d) loss of proton

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Option – b)

11) Formation of anions occurs by _

a) Loss of neutrons

b) Gain of protons

c) Gain of electrons

d) None

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Option – c)

12) The gas which is present in both the natural gas and the bio-gas is _

a) Methane

b) Butane

c) Hydrogen

d) Carbon monoxide

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Option -a)

13) Lead in water can cause _

a) Eye disease

b) Arthritis

c) Kidney damage

d) Hair falling

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Option – c)

14) The poisonous gas obtained by exposing chloroform to air and sunlight is—

a) CH2 CL2

b) COCL2

c) CH2O

d) CH3CL

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Option -b)

15) Benzene is a polymer of _

a) Methane

b) Acetylene

c) Ethane

d)Ethylene

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Option -b)
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