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

(a)

inertia of rest

(b)

inertia of motion

(c)

momentum

(d)

inertia of direction

The physical quantity which is equal to change in momentum is

(a)

velocity

(b)

acceleration

(c)

force

(d)

impulse

For air, the refractive index is

(a)

1

(b)

infinity

(c)

0

(d)

1

The image formed by retina of human eye is

(a)

Virtual and eract

(b)

Real & inverted

(c)

Virtual & inverted

(d)

Real & erect

In compound microscope, as compare to eye piece, objective lens has _____ focal length.

(a)

-ve focal length

(b)

Zero

(c)

Small

(d)

Large

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

Which of the following laboratory apparatus is used during the verification of Ohm's law?

(a)

Voltmeter

(b)

Ammeter

(c)

Rheostat

(d)

All the above

Choose the correct statement

(a)

Nichrome has low resistance and high melting point

(b)

Fuse wire has high resistance and low melting point

(c)

Nichrome has high resistance and low melting point

(d)

Fuse wire has low resistance and high melting point

Earthquake produces ______.

(a)

Ultrasound

(b)

Infrasound

(c)

audible sound

(d)

none

Artificial radioactivity was discovered by_____

(a)

Bequerel

(b)

Irene Curie

(c)

Roentgen

(d)

Neils Bohr

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

U²³⁸ is fissionable _________ neutrons.

(a)

only by fast

(b)

only by slow

(c)

both fast and slow

(d)

by thermal

Which of the following represents 1 amu?

(a)

Mass of a C – 12 atom

(b)

Mass of a hydrogen atom

(c)

1/12^th of the mass of a C – 12 atom

(d)

Mass of O – 16 atom

The atomic number of an element is 12 and its mass number is 24. The number of electrons, protons and neutrons respectively will be

(a)

12, 12, 24

(b)

24,12,12

(c)

12,12,12

(d)

12, 24,12

The volume occupied by 4.4 g of CO₂ at STP is:

(a)

22.4l

(b)

2.24l

(c)

0.224l

(d)

0.1l

The process of coating the surface of metal with a thin layer of zinc is called______.

(a)

painting

(b)

thinning

(c)

galvanization

(d)

electroplating

The distance from the centre of the nucleus to the outer most electron in an ion is termed as _________ radii.

(a)

atomic

(b)

ionic

(c)

Covalent

(d)

both (b) and (c)

Solubility of NaCl in 100 ml water is 36 g. If 25 g of salt is dissolved in 100 ml of water how much more salt is required for saturation _____________

(a)

12g

(b)

11g

(c)

16g

(d)

20g

Hygroscopic substances are used as __________ agents.

(a)

oxidizing

(b)

reducing

(c)

decarbocyleting

(d)

drying

Photolysis is a decomposition reaction caused by __________

(a)

heat

(b)

electricity

(c)

light

(d)

mechanical energy

The product formed when calcium oxide reacts with water is

(a)

Slaked lime

(b)

Carbon dioxide

(c)

Calcium oxide

(d)

Oxygen gas

Which of the following are used as anaesthetics?

(a)

Carboxylic acids

(b)

Ethers

(c)

Esters

(d)

Aldehydes

Ethanoic acid turns

(a)

red litmus blue

(b)

blue litmus red

(c)

red litmus green

(d)

blue litmus green

Which is formed during anaerobic respiration

(a)

Carbohydrate

(b)

Ethyl alcohol

(c)

Acetyl CoA

(d)

Pyruvate

During transpiration there is loss of

(a)

Carbon dioxide

(b)

Oxygen

(c)

Water

(d)

None of the above

The number of______ increases during allergy.

(a)

Basophil

(b)

RBC

(c)

Eosinophil

(d)

Monocyte

Dendrites transmit impulse ______ cell body and axon transmit impulse ______ cell body.

(a)

away from, away from

(b)

towards, away from

(c)

towards, towards

(d)

away from, towards

______ is the innermost, thin delicate membrane richly supplied with blood.

(a)

Durameter

(b)

Myelin sheath

(c)

Piameter

(d)

Arachnoid membrane

Identify the exocrine gland

(a)

Pituitary gland

(b)

Adrenal gland

(c)

Salivary gland

(d)

Thyroid gland

A single highly coiled tube where sperms are stored, get concentrated and mature is known as

(a)

Epididymis

(b)

Vasa efferentia

(c)

Vas deferens

(d)

Seminiferous tubules

The best way of direct dating fossils of recent origin is by

(a)

Radio-carbon method

(b)

Uranium lead method

(c)

Potassium-argon method

(d)

Both (a) and (c)

DNA fingerprinting is based on the principle of identifying _______ sequences of DNA

(a)

single stranded

(b)

mutated

(c)

polymorphic

(d)

repititive

Coronary heart disease is due to

(a)

Streptococci bacteria

(b)

Inflammation of pericardium

(c)

Weakening of heart valves

(d)

Insufficient blood supply to heart muscles

Common energy source in village is

(a)

electricity

(b)

coal

(c)

biogas

(d)

wood and animal dung