Pascal’s law is used in

(a)

hydraulic lift

(b)

brake system

(c)

pressing heavy bundles

(d)

All the above

The refractive index of water is

(a)

1.0

(b)

1.33

(c)

1.44

(d)

1.52

______ metal undergoes rusting.

(a)

tin

(b)

sodium

(c)

copper

(d)

iron

An example for colonial form of algae is

(a)

Oscillatoria

(b)

Nostac

(c)

Volvox

(d)

Chlorella

Osmosis is the movement of water molecules from a ______.

(a)

Higher concentration to a region of lower concentration.

(b)

Lower concentration to a region of higher concentration.

(c)

Both of these

(d)

None of these

The process of converting a liquid into a solid is called_________.

(a)

sublimation

(b)

condensation

(c)

freezing

(d)

deposition

In water, hydrogen and oxygen are combined in the ratio of _______by mass.

(a)

1:8

(b)

8:1

(c)

2:3

(d)

1:3

Adam’s apple is the growth of the ________

(a)

pharynx

(b)

thyroid

(c)

larynx

(d)

parathyroid

Sound waves travel very fast in

(a)

air

(b)

metals

(c)

vacuum

(d)

liquids

A compass is used for __________

(a)

plotting magnetic lines

(b)

detection of magnetic field

(c)

navigation

(d)

All of these