PG TRB Chemistry Study Materials 2020-2021 - 1

Question: 1

Electrons are present in the

(A) Outer part of the atoms

(B) Central part of atoms

(C) Nucleus

(D) Core of atoms

Ans: A

Outer part of the atoms

Question: 2

Which of the following is the lightest metal?

(A) Lithium

(B) Lead

(C) Mercury

(D) Silver

Ans: A

Lithium

Question: 3

An alloy is

(A) a mixture

(B) an isomer

(C) a compound

(D) an allotropic form

Ans: A

a mixture

Question: 4

Stainless steel is an alloy of

(A) Iron, Chromium and Nickel

(B) Iron, Chromium and Zinc

(C) Iron, and Manganese

(D) Iron, Carbon and Nickel

Ans: A

Iron, Chromium and Nickel

Question: 5

Neutrons are

(A) Positively or negatively charged particles

(B) Neutral particles

(C) Positively charged particles

(D) Negatively charged particles

Ans: B

Neutral particles

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