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


Question: 2

The first metal used by man was

(A) Silver

(B) Iron

(C) Copper

(D) Gold

Ans: C


Question: 3

Which one of the following chemicals helps in fruit ripening?

(A) Atrazine

(B) Isoproturan

(C) Malathion

(D) Ethephon

Ans: D


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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