Previous 10 Years Question Papers with Answers for TRB Chemistry - 2

Question: 6

The boiling point of iron is

(A) 933 K

(B) 2323 K

(C) 2648 K

(D) 2808 K

Question: 7

Alum is used as

(A) An analgesic

(B) A fertilizer

(C) A disinfectant

(D) A purifier for water

Question: 8

The inert gas abundantly found in atmosphere is

(A) Xe

(B) Ar

(C) Kr

(D) He

Question: 9

Saturated solution of NaCl on heating becomes

(A) Supersaturated

(B) Unsaturated

(C) Remains saturated

(D) None of these

Question: 10

Number of neutrons present in C¹³ is

(A) 4

(B) 5

(C) 6

(D) 7