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Removal Of The Top Layer Of Soil1

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What is the name given to molten rocks that are erupted by a volcano?

With which device are earthquakes recorded?

The household line voltage(in volt) is approximately--

Which of the following sulphur compound is used as a bleaching agent in textile industry?

The Sun is a--

Who invented the ball point pen?

Which Vitamin do we get from sun ray?

By what name is water which contains soluble salts of calcium and magnesium known?

Quinine is obtained from the bark of which tree?

Who among the following evolved the concept of relationship between mass and energy?

"To every action there is an equal and oposite reaction"-- this theory has been given by--

The universal blood group donor is--

In tritinum, electrons, protons and neutrons are present in the ratio of--

The tendency of a liquid drop to assume spherical shape is due to--

Dry ice is--

A barometer is used for measuring--

Which one of the following is not a plantation crop?

What is the scientific name of Vitamin C?

Which of the following has an organic origin?

Every molecule of water contains-- Oxygen and --Hydrogen.

Which one of the following metals reacts very rapidly with water at room temperature?

Which human gland does secret growth hormone?

What is known as the universal solvent?

Joule is the unit of--