PG TRB Chemistry Model Question Paper with Answer - 2

Question: 6

One of the constituent of optical glass is

(A) Borax

(B) Red lead

(C) Lead oxide

(D) Alumina

Question: 7

Graphite and diamond are the two forms of ___ that occur in nature.

(A) Sulphur

(B) Carbon

(C) Phosphorous

(D) Sodium

Question: 8

Electron affinity of halogens is

(A) Highest

(B) Lowest

(C) Moderate

(D) Very low

Question: 9

Which one of the following is the heaviest metal?

(A) Uranium

(B) Aluminium

(C) Silver

(D) Copper

Question: 10

–CHO is the functional group of

(A) Aldehyde

(B) Alcohol

(C) Carboxylic acid

(D) Ketone