PG TRB Chemistry Online Test - 2

Question: 6

The percentage of cobalt in cobalt steel is

(A) 5%

(B) 15%

(C) 35%

(D) 55%

Question: 7

Which one of the following is called Fuel of Future?

(A) Petrol

(B) Hydrogen

(C) Oxygen

(D) L.P.G.

Question: 8

Discovery of the nucleus of an atom was due to the experiment carried out by

(A) Moseley

(B) Thomson

(C) Rutherford

(D) Bohr

Question: 9

The most common ore of Aluminium is

(A) Cryolite

(B) Haematite

(C) Bauxite

(D) Felspar

Question: 10

Solder is an alloy of

(A) Tin and lead

(B) Tin and copper

(C) Tin, copper and zinc

(D) Tin, lead and zinc