Question # 1

SI unit of mass is.

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Gram

mg

kg

all of above

Large number of sotmata are found on.... side of leaf.

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Lower

Upper

Middle

None of these

Types of coalent bond are

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1

2

3

4

Value of "g" is taken on Earth is.

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1.6 N/kg

9 N/kg

10 N /kg

100 N /kg

The force between the molecules of wate.

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Adhesive force

Cohesive forece

Repulsive force

Magnetic force

In which type of irrigation water is distribute through netweork of pipes.

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Drip irrigation

Sprinkle irrigation

Karez

Tube well

The speed of sound in air is.

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100 m/s

300 m/s

100 m/s

330 m/s

A pigment in the skin that protcts harmful effects of sunlight.

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Haemoglobin

Melanin

Lysozyme

Lymphocyte

What is transferred by teh movement of waves.

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matter

energy

both a and b

None of these

Force is

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A push

a pull

A friction

All above

The rise of liquid in the thermomeer is due to.

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Evaporation

Contraction

Expansion

Sublimation

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