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

Question : 6 [PSC (Pre) 2018]

Which of the following elements was first produced artificially?

a) Plutonium

b) Francium

c) Neptunium

d) Technetium

Question : 7 [PSC (Pre) 2018]

The rain drops are spherical because

a) The air has resistance

b) The water has surface tension

c) They fall from big height

d) None of the above

Question : 8

Two pieces of metal when immersed in a liquid have equal upthrust on them; then

a) both pieces must have equal densities

b) both pieces must have equal weights

c) both pieces must have equal volumes

d) both are floating to the same depth

Question : 9 [UPPCS (Pre) 2005]

In cold weather, aquatic animals survive even when water at the top layer of the lake freezes into ice because

a) They have enough of accumulated oxygen inside them

b) Their body structure is such that they can survive without oxygen

c) They can breathe in ice

d) Water has the highest density at 4°C so underneath the top layer of ice there is a layer of water

Question : 10 [PSC (Pre) 2019]

Consider the figure of a fountain with four holes, given below.Which one of the holes in the fountain will throw the water farthest?

a) 3

b) 2

c) 4

d) 1