metals, non metals, minerals, ores, properties, uses - Category wise Question and Answer Practice Test with Solutions

Question : 11 [UDA/LDA (Mains) 2006]

Which of the following materials has the highest electrical conductivity?

a) Silver

b) Graphite

c) Diamond

d) Wood

Question : 12 [MPPCS (Pre) 2005]

Which of the following is mainly used for the production of Aluminium?

a) Lignite

b) Bauxite

c) Hematite

d) Magnetite

Question : 13

Which of the following is an oxide ore?

a) Haematite

b) Bauxite

c) Cuprite

d) All of these

Question : 14

The chief ore of aluminium is

a) alunite

b) bauxite

c) cryolite

d) feldspar

Question : 15 [NDA]

Which one of the following is the correct order in which the gases H₂, Ne, O₂ and N₂ are evolved on fractional distillation of liquid air?

a) H₂, Ne, N₂, O₂

b) N₂, O₂, Ne, H₂

c) H₂, Ne, O₂, N₂

d) O₂, N₂, H₂, Ne