The unit of ‘g’ is m s^-2. It can be also expressed as ______.

(a)

cms^-1

(b)

Nkg^-1

(c)

Nm²kg^-1

(d)

cm²s^-2

The eye defect ‘presbyopia’ can be corrected by

(a)

convex lens

(b)

concave lens

(c)

convex mirror

(d)

Bi focal lenses

If a substance is heated or cooled, the linear expansion occurs along the axis of

(a)

X or –X

(b)

Y or –Y

(c)

both (a) and (b)

(d)

(a) or (b)

If a sound wave travels with a frequency of 1.25 x 10⁴ Hz at 344 ms^-1, the wavelength will be 

(a)

27.52 m

(b)

275.2 m

(c)

0.02752 m

(d)

2.752 m

_____________ aprons are used to protect us from gamma radiations

(a)

Lead oxide

(b)

Iron

(c)

Lead

(d)

Aluminium

Mass of 1 mole of Nitrogen atom is

(a)

28 amu

(b)

14 amu

(c)

28 g

(d)

14 g

In the aluminothermic process the role of Al is _____.

(a)

oxidizing agent

(b)

reducing agent

(c)

hydrogenating agent

(d)

sulphurising agent

Deliquescence is due to __________

(a)

Strong affinity to water

(b)

Less affinity to water

(c)

Strong hatred to water

(d)

Inertness to water

Powdered CaCO₃ reacts more rapidly than flaky CaCO₃ because of __________.

(a)

large surface area

(b)

high pressure

(c)

high concentration

(d)

high temperature

The endarch condition is the characteristic feature of

(a)

root

(b)

stem

(c)

leaves

(d)

flower

Mammals are ______________ animals.

(a)

Cold blooded

(b)

Warm blooded

(c)

Poikilothermic

(d)

All the above

A patient with blood group O was injured in an accident and has blood loss. Which group of blood should be used by doctor for transfusion?

(a)

O group

(b)

AB group

(c)

A and B group

(d)

All blood group

Which nervous band connects the two cerebral hemispheres of brain?

(a)

thalamus

(b)

hypothalamus

(c)

corpus callosum

(d)

pons

Identify the exocrine gland

(a)

Pituitary gland

(b)

Adrenal gland

(c)

Salivary gland

(d)

Thyroid gland

What is true of gametes?

(a)

They are diploid

(b)

They give rise to gonads

(c)

They produce hormones

(d)

They are formed from gonads

The _____________ units form the backbone of the DNA.

(a)

5 Carbon sugar

(b)

Phosphate

(c)

Nitrogenous bases

(d)

Sugar phosphate

The term Ethnobotany was coined by

(a)

Khorana

(b)

J.W. Harshberger

(c)

Ronald Ross

(d)

Hugo de Vries

Soil erosion is more where there is

(a)

no rainfall

(b)

low rainfall

(c)

rainfall is high

(d)

none of these

A cheap, conventional, commercial and inexhaustible source of energy is

(a)

hydropower

(b)

solar energy

(c)

wind energy

(d)

thermal energy

Where you will create category of blocks?

(a)

Block palette

(b)

Block menu

(c)

Script area

(d)

sprite