Question # 1

Vital force theory was rejected by.

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Jabir Bin Hayan

Drawin

Wohler

Berzellius

Which one of the following properties of water is responsible for rising of water in plants?

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Specific heat capacity

Viscosity

Excellent solvent action

Capillary action

Natural source of citric acid is:

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Rancid butter

Fats

Lemon

Sour milk

Specific heat capacity of water is.

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4.2 KJg^-1 K^-1

4.2 Jg^-1K^-1

2.4 KJg^-1K^-1

2.4 Jg^-1K^-1

The percentage of water in human body is about:

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60%

50%

70%

80%

Which are responsible for transmitting genetic information form generation to generation:

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vitamins

lipids

proteins

Nucleic acids

Chloroform is used for

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Anesthesia

Fever

Link

Toys

Smell of rancid butter is due to the presence of.

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Propanoic acid

Butanoic acid

Acitic acid

Citric acid

Which is used to remove the grease stains from clothes?

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NaOH

KOH

Al(OH)₃

NH₄OH

pH of neutral solution is always.

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6

5

7

10

If a liquid has a pH of 7 then it must.

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Be a colourless and odourless liquid

Freeze at 0 ^oC and boil at 100 ^oC

Be natural

Be a solution containing water

Lipids are macromolecules. They have characteristics except one of the following.

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They are high energy foods.

They are soluble in water.

They are poor conductor of heat.

They are esters of fatty acids.

General formula of alkyl radical is

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C_nH_2n+2

C_nH_2n-2

C_nH_2n+1

C_nH_2n

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