PG TRB Model Question Paper for Chemistry with Answer - 1
Question: 1
Who discovered neutrons?
(A) J.J.Thomson
(B) Bohr
(C) Chadwick
(D) Goldstein
Ans: C
Chadwick
Question: 2
The first metal used by man was
(A) Silver
(B) Iron
(C) Copper
(D) Gold
Ans: C
Copper
Question: 3
Which one of the following chemicals helps in fruit ripening?
(A) Atrazine
(B) Isoproturan
(C) Malathion
(D) Ethephon
Ans: D
Ethephon
Question: 4
The energy of an electron in an orbit was calculated by
(A) Rutherford
(B) Neils Bohr
(C) John Dalton
(D) J.J. Thomson
Ans: B
Neils Bohr
Question: 5
Which of the following types of materials act as effective catalysis?
(A) Alkali metals
(B) Transition metals
(C) Alkaline earth metals
(D) Radioactive metals
Ans: B
Transition metals
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