Question # 1

Number of discovered element till today are.

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140

118

90

16

Thousand of amino acids polymerize to form.

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Carbohydrates

Proteins

Lipids

Vitamins

Vibrious cholera causes.

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Choleera

Dysentery

Fluorsis

Hepatitis

The green house effect is proportional to the amount of which gas in air.

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CO₂

O₂

N₂

All of them

Almost all air crafts fly in which reion?

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Troposphere

Stratosphere

Mesosphere

Thermosphere

The removal of Mg⁺² and Ca⁺² Ion which are responsible for the hardness of water is called.

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Temporary hardness

Permanent hardness

Water softening

Hydrogen bonding

Maltose is commonly found in .

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Cereal

Milk

Cotton

Honey

Mesosphere has a temperature range.

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17 ^oC - 58^oC

58^oC - 2^oC

2^oC - 93^oC

- 93^oC

Vibrious cholera bacteria causes the disease

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Cholera

Diarrhea

Jaundice

Hepatitis

Density of water at 4°C is:

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0.976 gem-3

1 gem-3

0.956 gem-3

1.1 gem-3

The reaction in which the number of moles reactants and products not equal in balance chemical equation the units of Kc for this reactions are

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mol^-2

dm³

mol²

mol dm^-1

Dehydration means removal of.

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Water

Halogen

Hydrogen

All above.

Temporary hardness of water is removed by adding.

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Ca(OH)₂

NaOH

KOH

CaSO₄

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