Free Printable science class 9

1.

Water vapour at 373 K have more (a) than water at the same temperature.

2.

The lungs bring ______ into the body, and eliminates _____ from the body.

a)

Carbon monoxide, oxygen

b)

Oxygen , Carbon Monoxide

3.

Which of the following structures is NOT part of the respiratory system?

a)

Bronchus

b)

Trachea

c)

Heart

4.

What organ in the circulatory system is responsible for pumping the blood throughout the body?

a)

Heart

b)

Blood vessels

c)

Blood

5.

Which structures of the heart receive blood from the lower and upper parts of the body?

a)

Arteries

b)

Veins

c)

Atria

6.

The Circulatory System is also termed as ___________________

a)

Respiratory System

b)

Cardiovascular System

c)

Digestive System

7.

The Circulatory System is comprised of the following except:

a)

Heart

b)

Blood

c)

Lungs

d)

Blood Vessels

8.

All of the following are blood vessels except:

a)

Artery

b)

Blood

c)

Veins

d)

Capillaries

9.

It corrects the artery and vein

a)

Artery

b)

Vein

c)

Capillary

10.

It carries blood back to the heart

a)

Artery

b)

Vein

c)

Capillary

11.

During summer, water kept in an earthen pot becomes cool because of the phenomenon of

a)

diffusion

b)

transpiration

c)

osmosis

d)

evaporation

12.

Name the force that causes acceleration of an object moving along a circle and keeps the body moving.

a)

centripetal force

b)

centrifugal force

c)

repulsive force

d)

attractive force

13.

For a given force acceleration is inversely proportional to the mass of an object.

A. The above statement is correct because F=ma

B.The statement is not correct because the value of g is constant.

a)

option A is wrong

b)

both option A and B are wrong because the reasons given are wrong

c)

only option A is correct

d)

both A and B are correct.

14.

What is the gravitational force between two objects?

a)

attraction at large distance only

b)

attraction at small distance only

c)

attraction at all distances

d)

attraction at large distances but repulsive at small distances

15.

The gravitational forces cause

a)

Tides

b)

Motion of moon

c)

none of these

d)

both a and b

16.

A ball thrown up vertically return to the earth after 12s . Find the velocity with which it was thrown up?

a)

29.4m/s

b)

58.8 m/s

c)

36.5m/s

d)

48.8m/s

17.

A ball thrown up vertically return to the earth after 12s . Find the velocity with which it was thrown up?

a)

29.4m/s

b)

58.8 m/s

c)

36.5m/s

d)

48.8m/s

18.

Carrier of malaria causing protozoan is

a)

Female Anopheles mosquito

b)

Cockroach

c)

Housefly

d)

Butterfly

19.

Name the bacteria which promotes the formation of curd

a)

Rhizobium

b)

Cyanobacteria

c)

Lactobacillus

d)

Clostridium

20.

Question 1. A worker covers a distance of 40 km from his house to his place of work, and 10 km towards his house back. Then the displacement covered by the worker in the whole trip is

a)

(a) zero km

b)

(b) 10 km

c)

(c) 30 km

d)

(d) 50 km

21.

Question 2. Rate of change of displacement with respect to time is called

a)

(a) Speed

b)

(b) Deceleration

c)

(c) Acceleration

d)

(d) Velocity

22.

Question 3. A player moves along the boundary of a square ground of side 50 m in 200 sec.The magnitude of displacement of the farmer at the end of 11 minutes 40 seconds from his initial position is

a)

(a) 50 m

b)

(b) 150 m

c)

(c) 200 m

d)

(d) 50√2 m

23.

Question 1. A worker covers a distance of 40 km from his house to his place of work, and 10 km towards his house back. Then the displacement covered by the worker in the whole trip is

a)

(a) zero km

b)

(b) 10 km

c)

(c) 30 km

d)

(d) 50 km

24.

Question 2. Rate of change of displacement with respect to time is called

a)

(a) Speed

b)

(b) Deceleration

c)

(c) Acceleration

d)

(d) Velocity

25.

Question 3. A player moves along the boundary of a square ground of side 50 m in 200 sec.The magnitude of displacement of the farmer at the end of 11 minutes 40 seconds from his initial position is

a)

(a) 50 m

b)

(b) 150 m

c)

(c) 200 m

d)

(d) 50√2 m

26.

Question 4. The average velocity of a body is given by the expression :

a)

(a) V= u+ at

b)

(b) 2as= v²− u²

c)

(c) V_av=(u + v)/2

d)

(d) S= ut + ½ a t²

27.

Question 5. Acceleration is a vector quantity, which indicates that its value

a)

(a) Is always negative

b)

(b) Is always positive

c)

(c) Is zero

d)

(d) Can be positive, negative or zero

28.

Question 6. An object travels 40m in 5 sec and then another 80m in 5 sec. What is the average speed of the object?

a)

(a) 12 m/s

b)

(b) 6 m/s

c)

(c) 2 m/s

d)

(d) 0 m/s

29.

Question 7. SI Unit of measurement of acceleration is

a)

(a) m/s

b)

(b) m/s²

c)

(c) m/hr

d)

(d) M

30.

Question 8. If the displacement of an object is proportional to square of time, then the object moves with:

a)

(a) Uniform velocity

b)

(b) Uniform acceleration

c)

(c) Increasing acceleration

d)

(d) Decreasing acceleration

31.

Question 9. Which of the following can sometimes be ‘zero’ for a moving body?

i. Average velocity

ii. Distance travelled

iii. Average speed

iv. Displacement

a)

(a) Only (i)

b)

(b) (i) and (ii)

c)

(c) (i) and (iv)

d)

(d) Only (iv)

32.

Question 10. Which of the following statement is correct regarding velocity and speed of a moving body?

a)

(a) Velocity of a moving body is always higher than its speed

b)

(b) Speed of a moving body is always higher than its velocity

c)

(c) Speed of a moving body is its velocity in a given direction

d)

(d) Velocity of a moving body is its speed in a given direction

33.

Question 11. Distance is a ____ quantity

a)

Vector

b)

Scaler

c)

Both a and b

d)

None of these

34.

Question 12.When body is in motion, ________ always changes.

a)

its velocity

b)

its acceleration

c)

its position vector

d)

its momentum

35.

A man is in a car is moving with velocity of 36 km/hr. His speed with respect to the car is

a)

10 km/h

b)

36 km/h

c)

0 km/h

d)

infinite

36.

Question 14. When velocity time graph is a straight line parallel to time axis then

a)

acceleration is const

b)

acceleration is variable

c)

acceleration is zero

d)

velocity is zero

37.

Question 15.Area under velocity time graph gives

a)

force

b)

distance

c)

displacement

d)

acceleration

38.

Question 16.A body is moving with uniform velocity. Its

a)

speed changes

b)

displacement from origin changes

c)

direction of motion changes

d)

acceleration changes

39.

Question 17.Four cars A, B, C and D are moving on a levelled, straight road. Their distance time graphs are shown in the figure below. Which of the following is the correct statement regarding the motion of these cars?

a)

Car A is faster than car D

b)

Car B is the slowest

c)

Car D is faster than car C

d)

Car C is the slowest

40.

Question 18.The numerical ratio of displacement to distance for a moving object is:

a)

(a) Always less than 1

b)

(b) Equal to 1 or less than 1

c)

(c) Always more than 1

d)

(d) Equal to 1 or more than one

41.

Question 19.Which of the following is most likely not a case of uniform circular motion?

a)

(a) Motion of the earth around the sun

b)

(b) Motion of a toy train on a circular track

c)

(c) Motion of a racing car on a circular track

d)

(d) Motion of hours’ hand on the dial of a clock

42.

Question 20.In which of the following cases of motions, the distance moved and the magnitude of the displacement are equal?

i. If the car is moving on a straight road

ii. If the car is moving in circular path

iii. The pendulum is moving to and fro

iv. The earth is moving around the sun

a)

(a) only(ii)

b)

(b) (i) and (iii)

c)

(c) (ii) and (iv)

d)

(d) only (i)

43.

In which of the following conditions, the distance between the molecules of hydrogen gas would increase?

a)

Increasing pressure on hydrogen contained in a closed container

b)

Increasing the volume of the container of hydrogen gas

c)

Adding more hydrogen gas to the container without increasing the volume of the container

d)

All of the above

44.

In which of the following conditions, the distance between the molecules of hydrogen gas would increase?

a)

Increasing pressure on hydrogen contained in a closed container

b)

Increasing the volume of the container of hydrogen gas

c)

Adding more hydrogen gas to the container without increasing the volume of the container

d)

All of the above

45.

A form of matter has no fixed shape but it has a fixed volume. An example of this form of matter is

a)

Krypton

b)

Kerosene

c)

Carbon steel

d)

All of the above

46.

Which of the following cannot be considered a form of matter?

a)

Atom

b)

Electron

c)

Humidity

d)

Water

47.

The property of flow is unique to fluids. Which one of the following statements is correct?

a)

Only gases behave like fluids

b)

Gases and solids behave like fluids

c)

Gases and liquids behave like fluids

d)

none

48.

CO2 can be easily liquified and even solidified because

a)

It has weak forces of attraction

b)

It has comparatively more force of attraction than other gases

c)

It has more intermolecular space

d)

It is present in atmosphere.

49.

A few substances are arranged in the increasing order of ‘forces of attraction’ between their particles. Which one of the following represents a correct arrangement?

a)

Water, air, wind

b)

Air, sugar, oil

c)

Oxygen, water, sugar

d)

All

50.

Which of the following phenomena would increase on raising the temperature?

a)

(a) Diffusion, evaporation, compression of gases

b)

(b) Evaporation, compression of gases, solubility

c)

(c) Evaporation, diffusion, expansion of gases

d)

(d) Evaporation, solubility, diffusion, compression of gases

51.

Seema visited a Natural Gas Compressing unit and found that the gas can be liquefied under specific conditions of temperature and pressure. While sharing her experience with friends she got confused. Help her to identify the correct set of conditions.

a)

(a) Low temperature, low pressure

b)

(b) High temperature, low pressure

c)

(c) Low temperature, high pressure

d)

(d) High temperature, high pressure

52.

During summer, water kept in an earthen pot becomes cool because of the phenomenon of

a)

(a) diffusion

b)

(b) transpiration

c)

(c) osmosis

d)

(d) evaporation

53.

On converting 25°C, 38°C to Kevlin scale, the correct sequence of temperature will be

a)

(a) 298 K, 311 K

b)

(b) 298 K, 300 K

c)

(c) 273 K, 278 K

d)

(d) 298 K, 310 K

54.

The boiling point of water at sea level is

a)

(a) 0°C

b)

(b) 273 K

c)

(c) 373 K

d)

(d) 273°C

55.

Which of the following has the strongest interparticle forces at room temperature?

a)

(a) Oxygen

b)

(b) Water

c)

(c) Bromine

d)

(d) Iron

56.

Dry ice is

a)

(a) water in solid state

b)

(b) water in gaseous state

c)

(c) CO2 in liquid state

d)

(d) CO2 in solid state

57.

The colour of vapours formed on sublimation of iodine solid is

a)

(a) Purple (violet)

b)

(b) Colourless

c)

(c) Yellow

d)

(d) Orange

58.

Kinetic energy of molecules is directly proportional to

a)

(a) Temperature

b)

(b) Pressure

c)

(c) Both (a) and (b)

d)

(d) Atmospheric pressure

science class 9

Total questions: 58

Worksheet time: 29mins

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