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Chemistry MCQ Questions with answers
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Learn Chemistry MCQs [Page 8
of Department 10]
71) Which of the following has the longest wave length?
(A) ultraviolet radiation
(B) y - radiation
(C) visible radiation
(D) infra red radiation
Correct Answer - Option
(D)
No Explanation found. Add Explanation and get +2 points.
72) Which electromagnetic radiation is emitted by radioactive substances
(A) y - rays
(B) Radio waves
(C) micro waves
(D) x - ray
Correct Answer - Option
(A)
No Explanation found. Add Explanation and get +2 points.
73) Na+ ion is iso electronic with
(A) Li+
(B) Mg2+
(C) Ca2+
(D) Ba2+
Correct Answer - Option
(B)
No Explanation found. Add Explanation and get +2 points.
74) Neutrino has
(A) charge +1, amss 1
(B) charge 0, mass 0
(C) charge -1, mass 1
(D) charge 0, mass 1
Correct Answer - Option
(B)
No Explanation found. Add Explanation and get +2 points.
75) The number of neutrons in dipositive zine ion (Zn2+, mass number 70 and atomic number 30) is
(A) 34
(B) 36
(C) 38
(D) 40
Correct Answer - Option
(D)
No Explanation found. Add Explanation and get +2 points.
76) Which of the properties of the elements is a whole number ?
(A) Atomic mass
(B) Atomic number
(C) Atomic radius
(D) Atomic volume
Correct Answer - Option
(B)
No Explanation found. Add Explanation and get +2 points.
77) The charge on position is equal to the charge on
(A) proton
(B) electron
(C) α - particle
(D) neutron
Correct Answer - Option
(A)
No Explanation found. Add Explanation and get +2 points.
78) Discovery of the nucleus of an atom was due to the experiment carried out by
(A) Bohr
(B) Rutherford
(C) Moseley
(D) Thomson
Correct Answer - Option
(B)
No Explanation found. Add Explanation and get +2 points.
79) Discovery of the nucleus of an atom was due to the experiment carried out by
(A) Bohr
(B) Rutherford
(C) Moseley
(D) Thomson
Correct Answer - Option
(B)
No Explanation found. Add Explanation and get +2 points.
80) CN- ion is isoelectronic with
(A) N2
(B) CO
(C) both a & b
(D) none
Correct Answer - Option
(C)
No Explanation found. Add Explanation and get +2 points.
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