The physical quantity which is the measure of inertia is _______

(a)

density

(b)

weight

(c)

force

(d)

mass

The value of g

(a)

increases as we go above the earth's surface

(b)

decreases as we go to the centre of the earth

(c)

remains constant

(d)

is more at equator and less at poles

A star appears twinkling in the sky because of ______ by the atmosphere.

(a)

scattering of light

(b)

reflection of light

(c)

refraction of light

(d)

both a and b

To heavenly objects like stars ______ is used

(a)

Simple microscope

(b)

Compound microscope

(c)

Terrestrial

(d)

Astronomical

At constant temperature volume is inversely proportional to pressure of a gas is known as

(a)

Boyle's law

(b)

Charles

(c)

Avogadro

(d)

None

The resistance of a conductor is inversely proportional to its _______.

(a)

Volt

(b)

Length

(c)

Area

(d)

None of the above

In which one of the following heating effect the current is undesirable?

(a)

electric iron

(b)

electric motor

(c)

fuse wire

(d)

electric bulb

Sound waves in air are ________.

(a)

Transverse

(b)

longitudinal

(c)

both a & b

(d)

none

A chain reaction is continuous due to

(a)

large mass defect

(b)

large energy

(c)

production of more neutrons in fission

(d)

None of these

_________ are used to control the chain reaction.

(a)

Control rods

(b)

Moderators

(c)

Coolants

(d)

Neutron source

The relative atomic masses of many elements are not whole number because

(a)

they are not determined accurately

(b)

they exist as isotopes

(c)

due to impurities

(d)

atoms ionize

Atomicity of Sulphur is

(a)

1

(b)

2

(c)

4

(d)

8

40 g of sodium chloride in 100 g of water at 25⁰ C forms ________ solution.

(a)

Super saturated

(b)

Unsaturated

(c)

Saturated

(d)

Both (a) and (b)

Pick out
Compound + element ⟶ compound type of combination reaction

(a)

PCl₅ ⟶ PCl₃ + Cl₂

(b)

Mg + O₂ ⟶ 2MgO

(c)

PCl₃ + Cl₂ ⟶ PCl₅

(d)

2Na + Cl₂ ⟶ 2NaCl

General molecular formula of alkynes is ___________.

(a)

CnH_2n+2

(b)

CnH₂n

(c)

CnH_2-n-2

(d)

CnH2_n+1

The organic acid present in Vinegar is ___________ acid.

(a)

methanoic

(b)

ethanoic

(c)

Propanoic

(d)

Butanoic

Egg cells of Rabbit are released in_________

(a)

uterus

(b)

vagina

(c)

fallopian tube

(d)

ovary

Salt added to pickles brings about__________

(a)

diffusion

(b)

plasmolysis

(c)

imbibition

(d)

translocation

Neurons do not have the ability to _____

(a)

multiply

(b)

divide

(c)

regenerate

(d)

receive