Question # 1

Mineral required in the formation of chlorophyll.

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Iodine

iron

Phosphorus

Magnesium

Compustion is a.

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Physical Change

Chemical change

Thermal change

None of these

An object is attracted towards the Earth due to.

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Pull

Push

Friction

Gravity

The numebr of electorns present in an atom s equal to number of.

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Nucleus

Neutrons

Proton

Atom

Which of the following features of a wave is the number of waves that pass by each second.

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Loudness

Amplitude

Frequency

Wave speed

Which of the following has stble elecronic configuration.

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H

He

C

Li

In virus,..... is used to identify the host cell.

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Genome

Coat

Spike

Capsid

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

Irrigation means.

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Supply of waer to land crop

Supply of nutrients

Live stock

Farming

A gas produced on heating solid potassium chlorate is.

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Hydrogen

Carbon dioxide

Oxygen

Methane

Blue and ..... lifht is absorbed by chlorophyll.

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Yellow

Orange

Red

White

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