Question # 1

Inland water includes.

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River

Lakes

Streams

All of them

When CO₂ is passed through the ammonical brine the only salt that precipitates is:

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NaHCO₃

NH₄HCO₃

Na₂CO₃

(NH₄)₂CO₃

Which protect our muscles from cramping?

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Carbohydrats

Vitamins

Lipids

Proteins

Depending upon temperature variation, atmosphere ins divided into how many regions?

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1

2

3

4

Rickets disease is caused by the deficiency of.

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Vitamin D

Vitamin A

Vitamin E

Vitamin C

Which disease causes bone and tooth damage?

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Fluorosis

Hepatits

Cholera

Jaundice

The reaction in which the products can recombine to form reactants are called.

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Reversible reaction

Irreversible reaction

Decomposition

Addition

Acid rain damages the building it is due to reaction on.

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Calcium sulphate

Calcium nitrate

Calcium carbonate

Calcium oxilat

Specific Heat capacity of water is about.

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4.0 Jg^-1 K^-1

4.1 Jg^-1K^-1

4.2 Jg^-1K^-1

4.3 Jg^-1K^-1

The reaction in which the products do not recombine to form reactants are called.

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Inversible reactions

Reversible reaction

Decomposition

Addition

When CaCO_3,.is heated in an open flask, it decomposes to form calcium oxides and .

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O₂

CO

CO₂

CO₃

For which reaction Kf is the rate constant?

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Forward reaction

Backward reaction

Upward reaction

Downward reaction

The Earth's atmosphere is getting hotter because of.

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Increasing concentration of CO

Increasing concentration of CO₂

Increasing concentration of O₃

Increasing concentration of SO₂

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