Question # 1

As gases can adopt the shape of the container. Therefore gases have:

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different shapes

fixed shapes

no fixed shapes

definite shapes

Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as

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environment

hydrosphere

pollutant

biosphere

Amount of fresh water used by agriculture is

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2%

23%

69%

97%

In esterification, the OH of carboxylic acid is replaced by

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OR+

R+

OR

R

Carboxylic acids having carboxyl group one is called:

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Mono carboxylic acid

Di-carboxylic acid

Teri-carboxylic acid

Tetra carboxylic acid

Amino acids react together to form the primary structure of proteins which is accompanied by

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addition of water

addition of ammonia

removal of ammonia

removal of water

Daily protein intake for normal adults should be:

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0.2g/kg

0.5g/kg

0.8g/kg

1.1g/kg

The values of ∆H for the process l(g)+e-1--------->
I-1(g) is:

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>0

<0

0

None

Which of these polymer is synthetic polymer

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Animal fat

Starch

Cellulose

Polyester

In a cubic lattice a unit cell is shard equally by how many unit cells?

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4

2

6

8

Macromolecules are classified:

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inorganic

organic

biopolymer

synthetic

The fibre which contains polymers of vinylidine chloride as fibre forming substance is known as

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Saran fibre

Nylon

Polyester

Acetate fibre

Which property is not present in lipids?

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Liquid

Solid or semi solid

Soluble in water

Form emultion

The number of subatomic particles in atoms sidcovered is more than:

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110

100

125

90

The covalent radius of Cl atom is:

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99.4 pm.

176.7 pm

38 pm

76 pm.

The order of reactivity for a given halogen in Grignard's reagent is:

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CH₃X > C₂H₅X > C₃H₄X > C₄H₄X

C₂H₅X > C₃H₇X > C₄H₅X > CH₄X

C₃H₇X > C₄H₇X > CH₃X > C₂H₅X

C₄H₄X > C₃H₇X > C₂H₅X > CH₄X

General formula of aromatic carboxyl acids

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R---------------OH

RCOOH

RCOR

ARCOOH

On the basis of VSEPR theory SO₂is a

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Liner molecule

A bent molecule

A strong molecule

A gaseous molecule

When methane reacts with Cl₂in the presence of diffused light the products obtained are?

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Chloroform only

Carbon tetrachloride only

Chloromethane and dichloromethane

Mixture of a,b,c

Which teat is not given by both glucose and fructose

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Give yellow ppt of CHl₃with alkaline aqueous iodine

With 2, 4-DNPH give yellow ppt of hydrazone

Evolve H₂gas with Na metal

Oxidised with [Ag(NH₃)₂]⁺i.e. Tollen's reagent

Which of the following form normal oxide

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K

Li

Na

None

There are 20 amino acids found in protein which is not the property of these amino acids

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They are allα-amino acids

They are all optically active

They have high decomposition point

They are water soluble

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