Question # 1

Which one of the following organic compound is found is gasoline?

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C₂H₄

C₃H₈

C₇H₁₀

C₁₂H₂₆

The characteristics of reversible reactions are the following except:

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Products never recombine to form reactants.

They never complete

The proced in both ways

They have a double arrow between reactants and products.

Rickets disease is caused by the deficiency of.

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Vitamin D

Vitamin A

Vitamin E

Vitamin C

Which gas is responsible in warming the atmosphere?

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Nitrogen

Hydrogen

Helium

Fluorine

Which gas is used to prepare ammonia?

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N₂

O₂

Cl₂

S

Proteins are polymers of.

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Polysaccharide

Oligosaccharids

Amino acid

Nucleic acid

When NaHCO₃ is heated it forms.

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CO₂

Ca(OH)₂

CaCO₃

CaO

The value of constant of ionic product of water Kw at 25 C.

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1.0 x 10^-4

1.0 x 10¹⁴

1.0 x 10^-4

1.0 x 10⁴

The carbon contents in lignite is.

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80%

50%

60%

70%

Out of twenty how many amino acids can by synthesized by human body?

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Five

Ten

Seven

Twelve

Acid reacting with metal sulphides, liberate gas.

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Oxygen

Hydrogen

Hydrogen Sulphide

Hydrogen Oxide

Methyl orange produces which colour in basic solution

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Red

Yellow

Pink

White

Denaturing of protein is caused by.

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Heating

Changing pH

Both of them

None of these

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