Question 1.
Atoms of same element having different mass numbers are called________
A. Isobars
B. Isotopes
C. Isotones
D. Isomers
Ans: B. Isotopes
Question 2.
In an oxygen molecule, two atoms are united by
A. One bond
B. Two bonds
C. Three bonds
D. Four bonds
Ans: B. Two bonds
Question 3.
Atomic number of an atom gives the number of which of the following ?
A. Electrons
B. Protons
C. Neutrons
D. Neutrons and protons
Ans: B. Protons
Question 4.
Colour imparted to the Bunsen flame by strontium salt is
A. Bluish green
B. Apple-green
C. Brick red
D. Crimson red
Ans: D. Crimson red
Question 5.
How many neutrons does iron have?
A. 8
B. 13
C. 26
D. 30
Ans: D. 30
Question 6.
How many electrons are there in a Hydrogen atom?
A. One
B.Two
C. Three
D. Four
Ans: A. One
Question 7.
The chemical bahaviour of an atom depends upon
A. The number of protons in its nucleus
B. The number of neutrons in the nucleus
C. The number of electrons orbiting around the nucleus
D. The number of nucleons in the nucleus
Ans: C. The number of electrons orbiting around the nucleus
Question 8.
An oxidising agent is a
A. An electron acceptor
B. An electron donor
C. In a chemical reaction its oxidation number increases
D. It releases H2 in a chemical reaction
Ans: A. An electron acceptor
Question 9.
The electronic configuration of an atom having atomic number ‘20’ is
A. 2, 8, 10
B. 2, 6, 8, 4
C. 2, 8, 8, 2
D. 2, 10, 8
Ans: C. 2, 8, 8, 2
Question 10.
The third shell of an atom can have a maximum of __ electrons.
A. 13
B. 15
C. 18
D. 21
Ans: C. 11
Question 18.
Which one of the following has a maximum tendency to form M3 ion ?
A. N
B. Bi
C. P
D. As
Ans: A. N
Question 12.
Silver gets corroded due to __ in air.
A. Oxygen
B. Hydrogen Sulphide
C. Carbon dioxide
D. Nitrogen
Ans: B. Hydrogen Sulphide
Question 13.
Nucleus of an atom consists of.
A. Proton
B. Neutron
C. Proton and Neutron
D. Electron, Proton and Neutron
Ans: C. Proton and Neutron
Question 14.
Who developed the model of atomic structure ?
A. Bohr and Rutherford
B.Volta
C. Alfred Nobel
D. Faraday
Ans: A. Bohr and Rutherford
Question 15.
A matured mammalian cell without nucleus is
A. Lymphocyte
B. Erythrocyte
C. Spermatozoan
D. Oocyte
Ans: B. Erythrocyte
Question 16.
Which of the following causes the rusting of iron?
a. Oxidation
b. Reduction
c. Chemical reaction with oxygen
d. Chemical reaction with CO2
A. A and B
B. B and C
C. C and D
D. A and C
Ans: D. A and C
Question 17.
Which of the following is not a nucleon?
A. Proton
B. Neutron
C. Electron
D. Positron
Ans: D. Positron
Question 18.
Which among the following is a covalent compound ?
A. Calcium chloride
B. Magnesium fluoride
C. Sodium chloride
D. Carbon tetrachloride
Ans: D. Carbon tetrachloride
Question 19.
Which of the following metals can displace copper from copper sulphate solution ?
A. Platinum
B. Mercury
C. Iron
D. Gold
Ans: C. Iron
Question 20.
Photo-oxidation process is initiated by
A. Light
B. Heat
C. Oxygen
D. Catalyst
Ans: A. Light
Chemistry GK MCQs all set
- Chemistry GK MCQs Set-1
- Chemistry GK MCQs Set-2
- Chemistry GK MCQs Set-3
- Chemistry GK MCQs Set-4
- Chemistry GK MCQs Set-5
- Chemistry GK MCQs Set-6
- Chemistry GK MCQs Set-7
- Chemistry GK MCQs Set-8
- Chemistry GK MCQs Set-9
- Chemistry GK MCQs Set-10
- Chemistry GK MCQs Set-11
- Chemistry GK MCQs Set-12
- Chemistry GK MCQs Set-13
- Chemistry GK MCQs Set-14
- Chemistry GK MCQs Set-15
- Chemistry GK MCQs Set-16
- Chemistry GK MCQs Set-17
- Chemistry GK MCQs Set-18
- Chemistry GK MCQs Set-19
- Chemistry GK MCQs Set-20
- Chemistry GK MCQs Set-21
- Chemistry GK MCQs Set-22
- Chemistry GK MCQs Set-23
- Chemistry GK MCQs Set-24
- Chemistry GK MCQs Set-25
- Chemistry GK MCQs Set-26
- Chemistry GK MCQs Set-27
- Chemistry GK MCQs Set-28
- Chemistry GK MCQs Set-29
- Chemistry GK MCQs Set-30
- Chemistry GK MCQs Set-31
- Chemistry GK MCQs Set-32
- Chemistry GK MCQs Set-33
- Chemistry GK MCQs Set-34
- Chemistry GK MCQs Set-35
- Chemistry GK MCQs Set-36
- Chemistry GK MCQs Set-37
- Chemistry GK MCQs Set-38
- Chemistry GK MCQs Set-39
- Chemistry GK MCQs Set-40
- Chemistry GK MCQs Set-41
- Chemistry GK MCQs Set-42
- Chemistry GK MCQs Set-43
- Chemistry GK MCQs Set-44
- Chemistry GK MCQs Set-45
- Chemistry GK MCQs Set-46
- Chemistry GK MCQs Set-47
- Chemistry GK MCQs Set-48
- Chemistry GK MCQs Set-49
- Chemistry GK MCQs Set-50
- Chemistry GK MCQs Set-51
- Chemistry GK MCQs Set-52
- Chemistry GK MCQs Set-53
- Chemistry GK MCQs Set-54
- Chemistry GK MCQs Set-55
- Chemistry GK MCQs Set-56
- Chemistry GK MCQs Set-57
- Chemistry GK MCQs Set-58
- Chemistry GK MCQs Set-59
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