SI unit of temperature is __________

(a)

celsius

(b)

fahrenheit

(c)

kelvin

(d)

ampere

If the area of contact is greater, then the ______ will be greater.

(a)

Pressure

(b)

Temperature

(c)

Friction

(d)

Force

The centre of a sphere of which the reflecting surface of a spherical mirror is a part is called

(a)

pole

(b)

centre of curvature

(c)

cradius of curvature

(d)

aperture

The property which allows metals to be hammered into their sheets is ___________

(a)

ductility

(b)

malleability

(c)

conductivity

(d)

tensile strength

Which of the following element is named after a scientist?

(a)

Americium

(b)

Mercury

(c)

Nobelium

(d)

Neptunium

In Haber’s process of producing ammonia ______ is used as a catalyst.

(a)

Nitrogen

(b)

hydrogen

(c)

iron

(d)

nickel

The brown colour of a cut apple is due to

(a)

rusting

(b)

rancidity

(c)

browning

(d)

fermentation

The first vascular cryptogams in land plants are ________.

(a)

Bryophytes

(b)

Pteridophytes

(c)

Gymnosperm

(d)

Angiosperm

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

_________are called as building blocks of life

(a)

Cells

(b)

nucleus

(c)

Cell organelles

(d)

tissues

Conduction is the heat transfer which takes place in a____________.

(a)

solid

(b)

liquid

(c)

gas

(d)

All of them

Which of the following is true about oxygen?

(a)

Completely burning gas

(b)

Partially burning gas

(c)

Doesn’t support burning

(d)

Supports burning

Which one of the following organisms lack muscles and skeleton for movement?

(a)

Dog

(b)

Snail

(c)

Earth worm

(d)

Human being

During menstruation, the progesterone level is ___________

(a)

decreased

(b)

increased

(c)

ceased

(d)

normal

The range of audible frequency for the human ear is

(a)

2 Hz to 2000 Hz

(b)

20 Hz to 2000 Hz

(c)

20 Hz to 20000 Hz

(d)

200 Hz to 20000 Hz

A compass is used for __________

(a)

plotting magnetic lines

(b)

detection of magnetic field

(c)

navigation

(d)

All of these

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

Organism that control insects and pests of plant crops is

(a)

bio-pesticides

(b)

bio-fertilizers

(c)

earthworms

(d)

neem leaves

If the ruler is not displayed in the screen, __________ option is clicked.

(a)

View -> ruler

(b)

View -> task

(c)

File -> save

(d)

Edit -> paste