Which one the following systems of unit is the British System of unit?

(a)

CGS

(b)

MKS

(c)

FPS

(d)

SI

Unit of pressure is

(a)

pascal

(b)

Nm^–2

(c)

poise

(d)

Both (a) & (b)

The imaginary line passing through the centre of curvature and pole of a spherical mirror is called

(a)

centre of curvature

(b)

pole

(c)

principal axis

(d)

radius curvature

Symbol of Mercury is

(a)

Ag

(b)

Hg

(c)

Au

(d)

Pb

Brine is a concentrated solution of ______.

(a)

Sodium sulphate

(b)

sodium chloride

(c)

calcium chloride

(d)

sodium bromide

Micro organisms are measured in ______.

(a)

cm

(b)

mm

(c)

micron

(d)

meter

_________is a ball-shaped bacteria.

(a)

Bacilli

(b)

Spinilla

(c)

Cocci

(d)

Vibrio

Floridian starch is a reserve food material of

(a)

Chloroplyceae

(b)

Phaeophyceae

(c)

Rhodophyceae

(d)

Cyanophyceae

The process of air passing in and out the lungs is called ___________.

(a)

Inhalation

(b)

Exhalation

(c)

Breathing

(d)

None of these

Pen drive is _____device.

(a)

Output

(b)

Input

(c)

Storage

(d)

Connecting cable

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

(a)

sublimation

(b)

condensation

(c)

freezing

(d)

deposition

Aerated water contains

(a)

air

(b)

oxygen

(c)

carbon dioxide

(d)

nitrogen

In all atoms of an element

(a)

the atomic and the mass number are same.

(b)

the mass number is same and the atomic number is different

(c)

the atomic number is same and the mass number is different

(d)

both atomic and mass numbers may vary.

Many adolescent boys and girls get pimples on face, due to the secretions of _________ gland.

(a)

sweat

(b)

sebaceous

(c)

sweat and sebaceous

(d)

None of these

Sound waves travel very fast in

(a)

air

(b)

metals

(c)

vacuum

(d)

liquids

The shape of the Earth’s magnetic field resembles that of an imaginary __________.

(a)

U-shaped magnet

(b)

straight conductor carrying current

(c)

solenoid coil

(d)

bar magnet

The gas collected at the cathode on electrolysis of water is

(a)

oxygen

(b)

hydrogen

(c)

nitrogen

(d)

carbon dioxide

Magnesium hydroxides are used for treating_______

(a)

acidity

(b)

head pain

(c)

teeth decay

(d)

None of these

The main component of natural gas is __________

(a)

methane

(b)

ethane

(c)

propane

(d)

butane

Deforestation means ______

(a)

cleaning of forest

(b)

to grow plants

(c)

to look after plants

(d)

None of these.