Question # 1

Water molecule has a structure:

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Ionic

Non polar

Tetrahedral

Polar

Which part of digestive system glucose absorb.

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Stomach

Liver

Small intestine

Large intestine.

The percentage by volume of nitrogen in dry gas is.

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78.09%

20.94%

0.93%

0.03%

Binary compounds of oxygen such as CO2 and SO2 were names as acids by;

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Jabir Bin Hayan

Lavoisier

Al- Jahiz

Sir Humphrey Davy

Which one is not a characteristic of an acid:

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it turns red litmus blue

it reacts with base to form salt and water

Its aqueous solution conduct electric current

it has sour taste

Ozone depletion was first noticed is.

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1970's

1980's

1990's

1960's

Formula of acetaldehyde is:

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Deficiency of Vitamin E causes.

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rickets

Scurvy

Anemia in babies

Night blindness.

We exhale gas in the atmosphere during respiration.

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Carbon dioxide

Oxygen

Nitrogen

Water

Eggs oils and fats contain vitamin .

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A

B

C

D

A dynamic equilibrium

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Reaction stops to proceed

Amounts of reactants and products are equal

Rate of forward and reverse reaction are equl

Reaction can no longer be reversed.

Which is used for cleaning agent for domestic and commercial purpose?

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NaCl

Na₂CO₃

NaHCO₃

Na₂SiO₃

The dynamic equilibrium in irreversible reaction.

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Never establishes

Establishes after completion of reaction

Establishes before completion of reaction

Establishes very soon

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