Question # 1

Salt makes the water permanently hard.

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CaSO₄

Ca(HCO₃)₂

NaHCO₃

NaCO₃

If Qc > Kc the reaction will be in

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Chemical equilibrium

Static equilibrium

Reverse reaction

Forward reaction

Enzymes are chemically;

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lipids

carbohydrates

proteins

vitamins

Almost all aircrafts fly in:

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troposphere

mesosphere

stratosphere

themosphere

Maltose is commonly found in .

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Cereal

Milk

Cotton

Honey

The strong heating of coal in the absence of air is called.

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Carbonization

Destructive distillation

Fractional distillation

All

Main component of Natrual gas.

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CH₃

CH₄

C₂H₆

C₂H₂

Functional group of Alcohols is

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-COOH

-C=0

C-O-C

-OH

The % age of carbon is lignite is

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60

70

80

90

Which one of the following ion does not cause hardness in water?

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Ca⁺²

Mg^-2

SO^-2

Na⁺

The % age of carbon in peat is :

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60%

70%

80%

90%

Night blindness is because of deficiency of:

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Vitamin A

Protein

Vitamin C

Vitamin D

Carbon content in coke is.

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80%

98%

70%

88%

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