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

Question : 26 [BPSC (Pre) 1997]

The chemical formula of the Plaster of Paris is

a) $CaSO_4 ·½H_2O$

b) $CaSO_4 ·H_2O$

c) $CaSO_4$

d) $CaSO_4 ·2H_2O$

Question : 27

Select the property that is associated with non-metals.

a) Poor conductor of electricity

b) Low density

c) Low melting point

d) All of the above

Question : 28 [BPSC (Pre) 2000]

Which one of the following metals is liquid at room temperature?

a) Mercury

b) Nickel

c) Lead

d) Tin

Question : 29

Which of the following statement regarding metals is true?

a) Generally most of metals have high melting and boiling points.

b) All metals are solid in nature.

c) Metals can be used to make handle of cooking utensils

d) Gold is used generally to make electrical wires.

Question : 30

Which of the following non-metals has shining lustrous surfaces?

a) Iodine and phosphorus

b) Graphite and phosphorus

c) Graphite and iodine

d) Phosphorus and chlorine