Science MCQ

An empty plastic bottle closed with an airtight stopper is pushed down into a bucket filled with water. As the bottle is pushed down, there is an increasing force on the bottom. This is because

In a pressure cooker, the food is cooked faster because ______.

Clouds float in atmosphere because of their low ______.

The size of an air bubble rising up in water

Petroleum-based products float on the surface of the water. This is due to their low ………….
(a) volume
(b) density
(c) specific gravity
(d) viscosity

Human lung is well adopted to breath at a pressure of ………….kPa.

If there were no gravity, which of the following will not be there for fluid? (HOTS)

Most buoyant objects are those with relatively
(a) high volume
(b) higher mass
(c) low density
(d) less viscosity

Saccharometer is used to measure the density of …………….in a liquid.

The principle of “Hydrostatic balance” was devised by

A solid floats in liquid with a portion of it being submerged. Then
(a) The liquid exerts an upthrust equal to weight of the solid
(b) The weight of the dispersed liquid is equal to the weight of solid
(c) Solid exerts a force equal to its weight on liquid

An object completely immersed in fluid displaces its own volume of fluid.

Density Bottle is also called as

To find out relative density of the substance, with respect to density of water……………C is taken.

Scuba divers wear special suits to withstand

Fluids in general are

The pressure does not depend upon

Water (or) liquids exert pressure on

Intermolecular forces are stronger in ………………