(A) Mesosphere  (X)
(B) Stratosphere (X)
(C) Lithosphere (✔)
(D) None of these (X)

Answers: The earth’s Lithosphere is divided into 15 major plates of various sizes.

(A) 90% Hydrogen, 10% Nitrogen (X)
(B)  80% Nitrogen, 20% Hydrogen (X)
(C) 60% Nitrogen, 40% inert gases (X)
(D) None of these  (✔)

Answers: None of these

(A) seasons (X)
(B) atmosphere  (✔)
(C) air and sounds (X)
(D) wind and clouds (X)

Answers: Meteorology is the study of atmosphere.

(A) zinc  (✔)
(B) iodine  (X)
(C) copper (X)
(D) iron (X)

Answers: Deficiency of zinc causes loss of appetite and poor growth.

(A) iodine  (X)
(B) copper (X)
(C) fluorine  (✔)
(D) iron (X)

Answers: For proper formation of teeth, fluorine is essential.

(A) Albert Einstein  (✔)
(B) John Kepler (X)
(C) Galileo Galilei  (X)
(D) None of these (X)

Answers: Albert Einstein