Top100+ TRB Home Science Model Question Paper with Answers - 2

Question: 6

The largest cell in the human body is

(A) Kidney cell

(B) Liver cell

(C) Nerve cell

(D) Muscle cell 

Ans: C

Nerve cell

Question: 7

Lizards, snakes, crocodiles and turtles belong to the class

(A) Mammalia

(B) Amphibia

(C) Aves

(D) Reptilia

Ans: D

Reptilia

Question: 8

Gene was first isolated by

(A) S.Chandrashekar

(B) Hargobind Khurana

(C) C. Bose

(D) C.V.Raman

Ans: B

Hargobind Khurana

Question: 9

The longest bone in the human body is

(A) Thigh bone

(B) Back bone

(C) Gullet

(D) Stirrup

Ans: A

Thigh bone

Question: 10

Which of the following is used in pencils?

(A) Phosphorous

(B) Charcoal

(C) Silicon

(D) Graphite

Ans: D

Graphite

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