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

1. inertia of rest

2. inertia of motion

3. momentum

4. inertia of direction

When one of three series resistors is removed from a circuit and the circuit is reconnected the current

1. increase by half

2. increases

3. decreases by half

4. none of the above

Which among the following factors affect the rate of a reaction?

1. Surface area of reactants

2. Pressure

3. Temperature

4. all the above

Which of the following is correct?

1. Rate of change of charge is electrical power

2. Rate of change of charge is current.

3. Rate of change of energy is current.

4. Rate of change of current is charge.

In any and all collisions of short duration and for which it is true that no external forces act on the collision participants,

1. kinetic energy is conserved

2. both momentum and kinetic energy are conserved

3. neither momentum nor kinetic energy is conserved

4. momentum is conserved

The total number of electrons present in 16 g of methane gas is

1. 96.352 x 10²³

2. 48.176 x 10²³

3. 6.023 X 10²³

4. 30.11 x 10²³

Power of a lens is –4D, then its focal length is

1. 4m

2. –40m

3. –0.25 m

4. –2.5 m

Which of the following is a diatomic molecule?

1. CO

2. CO₂

3. SO₃

4. PO₄

A & B are two objects with masses 100 kg & 75 kg respectively, then _______

1. both will have same inertia

2. B'will have more inertia

3. A will have more inertia

4. both will have less inertia

Order of temperature of fusion reaction is ________kelvin.

1. 10¹⁷

2. 10⁷

3. 10¹⁰

4. 10³

Sound waves are produced by

1. linear motion

2. circular motion

3. vibrating bodies

4. transitional motion

Penetration power is the greatest in_______ rays

1. alpha

2. beta

3. gamma

4. helium

All the members of homologous series have the same.

1. molecular formula

2. physical Properties

3. general formula

4. all the above

The SI unit of force is

1. energy

2. joule

3. newton

4. dyne

Squirrels pollinate flowers of_______

1. Canna

2. Gladioli

3. Silkcotton tree

4. Hydrilla

If V_B, V_G, V_R be the velocity of blue, green and red light respectively in a glass prism, then which of the following statement gives the correct relation?

1. V_B = V_G = V_R

2. V_B > V_G >V_R

3. V_B < V_G < V_R

4. V_B < V_G > V_R

To heavenly objects like stars ______ is used

1. Simple microscope

2. Compound microscope

3. Terrestrial

4. Astronomical

A solution in which no more solute can be dissolved in a definite amount of solvent at a given temperature is called ___________

1. Saturated solution

2. Un saturated solution

3. Super saturated solution

4. Dilute solution

If a substance is heated or cooled, the change in mass of that substance is

1. positive

2. negative

3. zero

4. none of the above

Dr. Norman was an _________ agronomist.

1. American

2. Asian

3. Russian

4. British

_________ is used for deep-sea diving.

1. Oxygen - Argon mixture

2. Helium - Oxygen mixture

3. Nitrogen - Hydrogen mixture

4. Helium - Hydrogen mixture

Solubility of CO₂ gas in water ___________ with the increase in pressure.

1. increases

2. decreases

3. remains constant

4. None of these

_______ rays contain 1 - unit of negative charge.

1. Alpha

2. Beta

3. Gamma

4. Hydrogen

Radio ________ is used in the treatment of cancer.

1. sodium

2. cobalt

3. iron

4. phosphorous

Sound waves produced by bats are____________ waves.

1. ultrasonic

2. ultrasonic

3. audible

4. hearable

A 25% alcohol solution means 

1. 25 ml alcohol in 100 ml of water

2. 25 ml alcohol in 25 ml of water

3. 25 ml alcohol in 75 ml of water

4. 75 ml alcohol in 25 ml of water

Gibberellins cause:

1. Shortening of genetically tall plants

2. Elongation of dwarf plants

3. Promotion of rooting

4. Yellowing of young leaves

You're riding a bike when suddenly you hit a large rock. The bike stops moving but you fly over the handle - bars. This is an example of ______

1. Newton's I law

2. Newton's II law

3. Newton's III law

4. Law of conservation

How many parts are there in the Scratch Editor?

1. 4

2. 2

3. 3

4. 1

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

1. painting

2. thinning

3. galvanization

4. electroplating

Hard water contains salts of ____________

1. Ca and Mg

2. Fe and Ca

3. Cu and Fe

4. Cu and Ca

The value of universal gas constant is _____

1. 8.21 J mol^-1 K^-1

2. 8.27 J mol^-1 K^-1

3. 8.31 J mol^-1 K^-1

4. 8.31 J mol^-1 K^-1

Which of the following is the universal solvent?

1. Acetone

2. Benzene

3. Water

4. Alcohol

The law that gives a qualitative definition of force is _______

1. Newton's I law

2. Newton's II law

3. Newton's III law

4. Law of gravitation

Which of the following reactions is not feasible?

1. Zn + CuSO₄ ⟶ ZnSO₄ + Cu

2. 2Ag + Cu (NO₃)₂  ⟶ AgNO₃ + Cu

3. Fe + CuSO₄ ⟶ FeSO₄ + Cu

4. Mg + 2HCI ⟶ MgCl₂+ H₂

An element 'A' on exposure to moist air turns to form compound 'B' which is reddish brown. Identify 'A'.and 'B'

1. 'A' is Ag, 'B' is Ag_2s

2. 'A' is Cu, 'B' is CuO

3. 'A' is Mg, 'B' is MgO

4. 'A' is Fe, 'B' is Fe₂O₃

A 110 W, 220 V bulb draws a current.

1. 2A

2. 440 A

3. 0.5 A

4. 5.5 A

Pusa snowball is a disease resistant variety of________.

1. cowpea

2. cauliflower

3. wheat

4. rice

Homologous organ have

1. Same structure, same function

2. Different structure, different function

3. Same structure, different function

4. different structure, same function

The mitochondria were first discovered by

1. Kolliker

2. Mendal

3. Melvin Calvin

4. C.N.R. Rao

Which software is used to create document ?

1. Paint

2. PDF

3. MS Word

4. Scratch

Protein content in barely is higher than

1. maize

2. rice

3. wheat

4. None of the above

Which are not areas of the cerebrum?

1. Sensory signal receiving areas

2. Heart rate and breathing rate control areas

3. Logic and language areas

4. Motor signal generating areas

Ethene is an ___________

1. alkane

2. alkene

3. alkyze

4. armatic hydrocarbon

A bird sitting on an uninsulated wire carrying a current feels quite safe because

1. the bird is non-conductor of electricity

2. resistance of the bird is very large

3. there is a large potential difference between bird and wire

4. there is no potential difference between bird and wire

Echo is used to determine the velocity of sound waves in any medium.

1. True
2. False

A muscular pumping organ that pumps out the blood into the blood vessels is called pacemaker

A muscular pumping organ that pumps out the blood into the blood vessels is called heart

1. True
2. False

The angle of incidence "i is equal to the angle of reflection "r.

1. True
2. False

On heating hydrated crystalline salts, they lose their water of crystallization and become amorphous.

 

1. True
2. False

Neuroglia are also called as glial cells.

1. True
2. False