The resistance of a body to change its state of motion is called

(a)

force

(b)

momentum

(c)

inertia of motion

(d)

inertia of direction

The ball is thrown up, the value of g will be

(a)

zero

(b)

+ve

(c)

-ve

(d)

negligible

When light travels from rarer to denser medium, the refracted ray is ______  the normal.

(a)

bent away

(b)

along

(c)

bent towards

(d)

just grazes the surface of separation

An object is placed at 12 cm from a convex lens whose focal length is 10 cm. The image must

(a)

Virtual and enlarged

(b)

real and reduced in size

(c)

virtual and reduced size

(d)

real and enlarged size

All the substances will undergo the following changes like _____ when heated.

(a)

increase in temperature

(b)

expansion of substance

(c)

change of state

(d)

all the above

The relation between potential difference (V) and current (I) is:

(a)

V \(\alpha\)I

(b)

V\(\alpha\)I²

(c)

V\(\alpha\)\(\frac{I}{I}\)

(d)

None of the above

How many terminals an electric bulb consist of?

(a)

2

(b)

4

(c)

3

(d)

1

The speed of sound in air is 300 m/s. What is the frequency as heard by the human ear?

(a)

0.001 Hz

(b)

1 Hz

(c)

10,000 Hz

(d)

1,00,000 Hz

Henry Becquerel discovered ________ in 1896

(a)

nucleus

(b)

atom

(c)

isotopes

(d)

radioactivity

Chain reaction is possible only when the loss of neutrons is ________ the neutrons produced.

(a)

less than

(b)

greater than

(c)

equal to

(d)

independent of

Which of the following statement regarding an atom is always correct?

(a)

An atom has equal number of electrons and protons

(b)

An atom has equal number of electrons and neutrons

(c)

An atom has equal number of electrons, protons and neutrons

(d)

An atom has equal number of protons and neutrons

The weight of a molecule of the compound C₆₀H₁₂₂ is:

(a)

1.4 x 10^-21g

(b)

1.09 x 10^-21g

(c)

5.025 x 10²³g

(d)

16.023 x 10²³g

Modern periodic law is based on __________

(a)

atomic mass

(b)

atomic number

(c)

number of neutrons

(d)

Both (a) and (b)

The chemical symbol of Iron is _________________

(a)

I

(b)

Ir

(c)

FE

(d)

Fe

Pick out the metal that displaces hydrogen from hydrochloric acid.

(a)

Zinc

(b)

Silver

(c)

Copper

(d)

Gold

The enzymes present in yeast is / are _____________

(a)

invertage

(b)

zymase

(c)

both (a) and (b)

(d)

neither (a) nor (b)

Transpiration does not___________

(a)

help in ascent of sap

(b)

help in keeping cells turgid

(c)

helps in cooling leaves

(d)

helps in translocation

Auxins were identified by ______

(a)

Darwin

(b)

Kogi

(c)

Went

(d)

Funk

Normal gestation period of human last for about ________days

(a)

280

(b)

380

(c)

480

(d)

580