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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