physical properties of materials - Category wise Question and Answer Practice Test with Solutions

Question : 6 [IAS (Pre) 1997]

The tendency of a liquid drop to contract and occupy minimum area is due to

a) Viscosity

b) Density

c) Surface tension

d) Vapour pressure

Question : 7

If the force on the surface is doubled and area is reduced to half, pressure will

a) become 3 times

b) become 2 times

c) become 4 times

d) remain unchanged

Question : 8 [UPPCS (Mains) 2008]

At which temperature density of water is maximum?

a) 0°C

b) – 4°C

c) 4°C

d) – 8°C

Question : 9 [IAS (Pre) 2007]

Four wires of same material and dimensions as mentioned below are stretched by a load of same magnitude separately. Which one of them will be elongated maximum?

a) Wire of 2 m length and 2 mm diameter

b) Wire of 3 m length and 1.5 mm diameter

c) Wire of 1 m length and 2 mm diameter

d) Wire of 1 m length and 1 mm diameter

Question : 10 [RAS/RTS (Pre) 2013]

The most important property of nanomaterial is

a) Friction

b) Pressure

c) Force

d) Temperature