Name the Following,

Question 11 Mark

Energy sources which do not cause pollution

Answer

Wind energy, solar energy.

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Question 21 Mark

Main source of energy used by us.

Answer

Electricity

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Question 31 Mark

Forms of energy.

Answer

Sound, heat, light, electricity.

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Question 41 Mark

Examples of kinetic energy.

Answer

Moving wind mill, sailing boats, running water, moving car etc.

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Question 51 Mark

Fuels used for running machines.

Answer

LPG, CNG, coal, diesel, petrol.

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Question 61 Mark

Properties of substances.

Answer

Transparency, hardness, colour, smell, solubility in water.

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Question 71 Mark

Substances which goes into gaseous state directly from solid state.

Answer

Naphthalene balls

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Question 81 Mark

Three substances found in gaseous state.

Answer

Naphthalene balls, iodine crystals

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Question 91 Mark

Three substances found in liquid state.

Answer

Water, milk, cough syrup.

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Question 101 Mark

Any three substances found in solid state.

Answer

Iron, copper, aluminium, wood

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EVS Name the Following,

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