Question # 1

The number of carbon atoms present in kerosene oil.

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8-12

9-12

10-12

11-12

Crude oil is heated to the fractionating furnace upto.

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300 ^oC

350^oC

400^oC

450^oC

Night blindness is because of deficiency of:

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Vitamin A

Protein

Vitamin C

Vitamin D

Open chain compounds are also called:

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aliphatic compounds

alicyclic compounds

aromatic compounds

hydrocarbons

At which temperature o water shows mxamimum density.

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0 ^oC

100^oC

4^oC

-4^oC

Which process is responsible for ascending of water in plants from roots to leaf?

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Condensatin

Transpiration

Capillary action

Evaporation

Which one of the following is not air pollutants?

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N₂

CO

NO₂

O₂

Ammonical brine is prepared by dissolving ammonia gas in.

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NaCl

CaCO₃

CaCl₂

Na₂SO₄

Essential components of every living all are.

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Nucleic acids

Enzymes

Lipids

Cell wall

Potassium Ferrocyanide is a:

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Normal salt

Mixed salt

Complex salt

Double salt

About 99% of atmospheric mass lies in.

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35 km

30 km

15 km

16 km

Smell of rancid butter is due to the presence of.

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Propanoic acid

Butanoic acid

Acitic acid

Citric acid

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