(A) Molecule
(B) Element
(C) Plasma
(D) Current
The answer is (C) Plasma
Hydrogen bomb is based on the principle of
(A) Nuclear fission
(B) Nuclear fusion
(C) Natural radioactivity
(D) Artificial radioactivity
The answer is (B) Nuclear fusion
The purest form of iron is
(A) Wrought iron
(B) Steel
(C) Pig iron
(D) Nickel steel
The answer is (A) Wrought iron
Which among the following happens in an oxidation reaction ?
(A) Electrons are gained
(B) Electrons are lost
(C) Protons are gained
(D) Protons are lost
The answer is (B) Electrons are lost