Free Printable Science Quiz-Preliminary round

1.

Opening and closing of pores of leaf is a function performed by

a)

Stomata

b)

Chlorophyll

c)

Chloroplast

d)

Guard Cells

2.

1. The sugar present in milk is

a)

Sucrose

b)

Fructose

c)

Lactose

d)

Glucose

3.

1. A balanced diet does NOT include

a)

Carbohydrates and fats

b)

Nucleic acids and enzymes

c)

Proteins and vitamins

d)

Minerals and salts

4.

1. Common cold is caused by

a)

Bacteria

b)

Viruses

c)

Fungi

d)

Plasmodium

5.

Which element is used in the synthesis of proteins?

a)

Hydrogen

b)

Oxygen

c)

Nitrogen

d)

Carbon dioxide

6.

Which of the following hormones is a steroid?

a)

Estrogen

b)

Insulin

c)

Glucagon

d)

Thyroxine

7.

Which one of the following human cells do not contain mitochondria?

a)

Nerve cell

b)

Red blood cell

c)

Liver cell

d)

White blood cell

8.

Which of the following is a human disease caused by Fungi?

a)

Powdery mildew

b)

Ring worm

c)

Rusts

d)

Downy mildew

9.

When helium loses an electron, it becomes:

a)

An alpha particle

b)

A proton

c)

A positive helium ion

d)

A positive helium ion

10.

Main causes of acid rain are:

a)

Carbon monoxide and Carbondioxide

b)

Sulphur dioxide and oxygen

c)

Sulphur dioxide and Nitrous oxide

d)

Nitrous oxide and Oxygen

11.

Cement is formed by strongly heating a mixture of:

a)

Limestone and graphite

b)

Limestone and clay

c)

Chalk and graphite

d)

Clay and graphite

12.

The mercury and sodium vapour lamps light up because of:

a)

Atomic absorption

b)

Atomic emission

c)

Electron absorption

d)

Electron emission

13.

The most suitable vessel for storing concentrated sulphuric acid is:

a)

Copper vessel

b)

Aluminium vessel

c)

Glass vessel

d)

Steel vessel

14.

The key material used in the fabrication of a photovoltaic cell is

a)

Silicon

b)

Graphite

c)

Aluminium

d)

Copper

15.

Which of these is a scalar quantity?

a)

force

b)

pressure

c)

velocity

d)

acceleration

16.

Which of the following is more suitable for the core of an electromagnet?

a)

Air

b)

Steel

c)

Aluminium

d)

Soft Iron

17.

Electron volt (eV) is unit of

a)

Energy

b)

Potential

c)

Current

d)

Charge

18.

The wave theory of light cannot explain the phenomenon of

a)

Scattering

b)

Polarisation

c)

Reflection

d)

Photoelectric effect

19.

Which colour of light shows maximum deviation when passed through a prism?

a)

Yellow

b)

Green

c)

Violet

d)

Red

20.

A tablet of which among the following Vitamins should be advised to be used after purification of water by Iodine as a disinfectant.

a)

Vitamin A

b)

Vitamin B

c)

Vitamin C

d)

Vitamin D

21.

An artificial Satellite revolves round the Earth in circular orbit, which quantity remains constant?

a)

Angular Displacement

b)

Angular Momentum

c)

Linear Velocity

d)

None of these

22.

Which of the following weeds has been found useful to check water pollution caused by industrial effluents?

a)

Parthenium

b)

Elephant grass

c)

Water hyacinth

d)

None

23.

Which of these household products has a PH less than 7?

a)

Baking soda

b)

Ammonia

c)

Borax

d)

Grapefruit

24.

The alloy of aluminium used for making magnet is

a)

Duralumin

b)

Y–alloy

c)

Alnico

d)

aluminium bronze

25.

Which variety of glass is heat resistant?

a)

Bottle glass

b)

Flint glass

c)

Hardened glass

d)

Pyrex glass

26.

An active ingredient in enemas, which element compounds are used in pyrotechnics, petroleum mining, glass and paint making:

a)

Aluminium

b)

Barium

c)

Chlorine

d)

Sulphur

27.

A little bit, in pills, helps heart patients. A lot, in dynamite blows stuff up. What

a)

Nitro-glycerine

b)

Ammonium nitrate

c)

Trinitrotoluene

d)

Gunpowder

28.

Which of these is an exothermic reaction

a)

Water evaporization

b)

Rusting of iron

c)

Water+ Ammonium nitrate

d)

Baking Bread

29.

Which among the following measures is the longest distance per unit?

a)

Light year(ly)

b)

Parsec (pc)

c)

Astronomical Unit (au)

d)

None

30.

Christian Doppler first proposed in 1942 what came to be called the Doppler effect. This is the apparent change in the wavelength, of a source of, say, light or sound, when observed from a moving frame. On what observation did Doppler base his argument?

a)

The change in colour of light from distant stars

b)

The change in frequency of sound given off by a moving train

c)

Properties of light passing through a crystal

d)

None

Science Quiz-Preliminary round

Total questions: 30

Worksheet time: 15mins

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