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

Question : 21 [UP (Pre) 2004]

The heaviest natural element is

a) Mercury

b) Gold

c) Uranium

d) Calcium

Question : 22 [BPSC (Pre) 2000]

Which is the hardest in the following?

a) Glass

b) Quartz

c) Diamond

d) Platinum

Question : 23 [IAS (Pre) 2005]

Which one of the following is the correct sequence of the given substances in the decreasing order of their densities?

a) Gold > Mercury > Steel

b) Steel > Gold > Mercury

c) Steel > Mercury > Gold

d) Gold > Steel > Mercury

Question : 24

Which of the following reacts with cold water vigorously?

a) sodium

b) magnesium

c) carbon

d) sulphur

Question : 25 [IAS (Pre) 2000]

Match List-I with List-II:

a) 2 3 4 1

b) 2 3 1 4

c) 3 2 1 4

d) 3 2 4 1