set 3 MCQ Questions & Answers Detailed Explanation
MOST IMPORTANT general science mcq - 3 EXERCISES
The following question based on atomic structure, molecules and nuclear chemistry topic of general science mcq
(a) They are isoelectronic with each other
(b) They are isotopes of each other
(c) They are isomers of each other
(d) All of the above
The correct answers to the above question in:
Answer: (a)
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Read more chemistry basic Based General Science Questions and Answers
Question : 1
Radioactivity was discovered by
a) Becquerel
b) Bohr
c) Rutherford
d) Madam Curie
Answer »Answer: (a)
Question : 2
In an atom valence electron are present in
a) next to outermost orbit
b) first orbit
c) outermost orbit
d) any one of its orbit
Answer »Answer: (c)
Question : 3
The alpha particle carries two positive charges. Its mass is very nearly equal to that of
a) An atom of helium
b) Sum of masses of two positrons and two neutrons
c) Two protons
d) Two positrons are each positron carries a single positive charge
Answer »Answer: (a)
Question : 4
The Nucleus of Helium has
a) Two protons
b) Two protons and two neutrons
c) Only one neutron
d) One proton and two neutrons
Answer »Answer: (b)
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