#### 9th Standard Science English Medium Free Online Test Book Back 1 Mark Questions Part - Three

9th Standard

Reg.No. :
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Science

Time : 00:20:00 Hrs
Total Marks : 20

Part A

20 x 1 = 20
1. Which among the following is not a device to measure mass

(a)

Spring balance

(b)

Beam balance

(c)

Physical balance

(d)

Digital balance

2. The area under velocity time graph represents

(a)

Velocity of the moving object

(b)

Displacement covered by the moving object

(c)

Speed of the moving object

3. When a beam of white light passes through a prism it gets

(a)

Reflected

(b)

deviated and dispersed

(c)

only deviated

4. The separation of denser particles from lighter particles done by rotation at high speed is called ________

(a)

Filtration

(b)

sedimentation

(c)

decantation

(d)

centrifugation

5. The number of protons, neutrons and electrons present respectively in $_{ 35 }^{ 80 }{ Br }$

(a)

80, 80, 35

(b)

35, 55,80

(c)

35, 35, 80

(d)

35, 45, 35

6. The non-directional movement of a plant part in response to temperature is called ________.

(a)

thermotropism

(b)

Thermonasty

(c)

chemotropism

(d)

thigmonasty

7. Identify the animal having four chambered heart

(a)

Lizard

(b)

Snake

(c)

Crocodile

(d)

Calotes

8. The sprouting of onion and potatoes can be delayed by the process of _______________

(a)

irradiation

(b)

Irradiation

(c)

Salting

(d)

Canning

9. Electric field lines________ from positive charge and__________ in negative charge.

(a)

start; start

(b)

start; end

(c)

start: end

(d)

end; end

10. Oxidising agents are also called as____________because they remove electrons form other substances.

(a)

electron donors

(b)

electron acceptors

(c)

electron donors

(d)

Ionic

11. pH value of human blood is_________

(a)

7.0

(b)

7.4

(c)

7.6

(d)

7.6

12. Unstriated muscles are found in

(a)

blood vessels

(b)

gastrointestinal tract

(c)

urinary bladder

(d)

all of these

13. The structural and functional unit of the kidney is__________

(a)

villi

(b)

liver

(c)

nephron

(d)

ureter

14. The maximum speed of vibrations which produces audible sound will be in

(a)

seawater

(b)

ground glass

(c)

dry air

(d)

Human blood

15. Diamond is not a good conductor of electricity because

(a)

it is very hard

(b)

it has no free electron

(c)

its structure is uniform

(d)

it is insoluble in water

16. Which of the following does not contain natural dyes?

(a)

Potato

(b)

Beetroot

(c)

Carrot

(d)

Turmeric

17. Identify the incorrect statement with respect to adaptations of earthworm.

(a)

Earthworm has a stream lined body with no antennae or fins.

(b)

Each segment of earthworm has setae.

(c)

Many earthworms become inactive in a process called hibernation, during winter season.

(d)

Earthworms remain in its burrow during day time, to avoid sunlight.

18. Which one of the following is refered as red worms?

(a)

Eudrilus fetida

(b)

Eudrilus eugieniae

(c)

Perionyx excavatus

(d)

Lampito mauritii

19. Diptheria affects the

(a)

Lungs

(b)

Throat

(c)

Blood

(d)

Liver

20. Which of the following is correct?

(a)

Free and Open source

(b)

Free and Traditional software

(c)

Passive and Open source

(d)

Passive and Traditional source