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

Published on: 08/12/2020

Download Tamil Nadu 9th Standard Science question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.

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Std: 9th Standard - Science

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Questions:

Multiple Choice Question

20 x 1 = 20

Which one of the following is an Italian species of honey bee?

(a)

Apis mellifera

(b)

Apis dorsata

(c)

Apis florae

(d)

Apis cerana

Ceres is a _______.

(a)

Meteor

(b)

Star

(c)

Planet

(d)

Astroid

Which of the following does not contain natural dyes?

(a)

Potato

(b)

Beetroot

(c)

Carrot

(d)

Turmeric

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

(a)

seawater

(b)

ground glass

(c)

dry air

(d)

Human blood

Which of the following is highly toxic?

(a)

Carbon dioxide

(b)

Carbon monoxide

(c)

Calcium carbonate

(d)

Sodium bicarbonate

Clouds float in atmosphere because of their low

(a)

density

(b)

pressure

(c)

velocity

(d)

mass

The following is not a safety device.

(a)

Fuse

(b)

Trip switch

(c)

Ground connection

(d)

Wire

Which of the following is not found in a neuron?

(a)

Sarcolemma

(b)

Dendrite

(c)

Neurolemma

(d)

Axon

Which one of the following substance is not a constituent of sweat?

(a)

Urea

(b)

Protein

(c)

Water

(d)

Salt

10.

pH value of human blood is_________

(a)

7.0

(b)

7.4

(c)

7.6

(d)

7.6

11.

Elements with stable electronic configurations have eight electrons in their valence shell. They are__________

(a)

Halogens

(b)

Metals

(c)

Noble gases

(d)

non metals

12.

If the electronic configuration of an element is 1s² 2s²2p⁶ 3s²3p¹, then it will occupy___________ block of the periodic table.

(a)

(b)

(c)

(d)

13.

Transformer works on.

(a)

AC only

(b)

DC only

(c)

both AC and DC

(d)

AC nor effectively than DC

14.

SI unit of temperature is

(a)

fahrenheit

(b)

joule

(c)

celsius

(d)

kelvin

15.

Food and Adulteration Act was enforced by Government of India in the year __________.

(a)

1964

(b)

1954

(c)

1950

(d)

1963

16.

Dysentery is caused by

(a)

Entamoeba

(b)

Euglena

(c)

Plasmodium

(d)

Paramecium

17.

The speed of light is maximum in

(a)

vacuum

(b)

glass

(c)

diamond

(d)

graphite

18.

Difference in ________________is the principle used in fractional distillation

(a)

solubility

(b)

melting point

(c)

boiling point

(d)

adsorption

19.

A big tree falls in a forest but its roots are still in contact with the soil. The branches of this fallen tree straight up. This happens in response to __________

(a)

water and light

(b)

water and minerals

(c)

gravity and water

(d)

light and gravity

20.

1 metric ton is equal to

(a)

100 quintals