Question # 1

Which of the following is addition polymerization

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PVA

Polystyrene

Both

None

Which one of the following is the most abundant organic substance found in nature?

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fructose

starch

glucose

cellulose

Malt sugar is converted into glucose by an enzyme invertase present in yeast. The process is known as:

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dehydration

condensation

fermentation

oxidation

The smallest unit of a crystal that shows all the characteristic properties of its pattern is called

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cell

electrolyte

unit cell

crystal

Styrene has empirical formula CH, and there is 92.2%C and 7.75% hydrogen. If molar mass is 104g mol¯, what will be integral multiple (n) to get molecular formula:

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2

4

6

8

The high molecular weight materials which yield on hydrolysis the amino acids is called:

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Carbohydrates

Lipids

Fatty acids

Proteins

Which of the following polymers is used for weather resistant paints

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acrylic resins

polyvinyl acetate

polystyrene

PVC

Carbon Monoxide is:

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colouriess

orderless

high toxic

All of these

A polymeric substance that is formed in the liquid state and then hardened to a rigid solid is called

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Fibre

Plastic

Varnish

Polyamide resin

The strength of dipole-dipole forces depends upon

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Electro negativity difference

Distance between atoms

Electropositivity difference

Both A & B

A gas is heated in such a way that its volume and absolute temperature both are doubled. the pressure of gas:

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Becomes 4 time

Becomes half

Becomes 2 time

Remains same

Carbolic acid is the other name for

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Methanol

Ethanol

Propanol

Phenol

The solubility product of AgCl is 2.0 x 10^-10mole ²dm^-6. The maximum concentration of Ag⁺ions in the solution is

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2.0 x 10^-10mole dm^-3

1.41 x 10^-5mole dm^-3

1.0 x 10^-10

4.0 x 10^-20mole dm^-3

Simple sugars are :

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Monosaccharides

Disaccharides

Oligo saccharides

Trisaccharides

What happens when reaction is at equilibrium and more reactant is added :

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Forward reaction rate is increased.

Forward reaction rate is decreased.

Backward reaction rate is increased.

Equilibrium remains unchanged.

Which element does not belong to 3d transition series

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Ti

V

Mn

Te

Cotton has cellulose in it:

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96%

97%

98%

99%

The functional group isomer of dimethylether is

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Ethyl alcohol

Propyl alcohol

Diethyl ether

Butyl alcohol

The total number of orbitals possible for the quantum number n is

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n

n²

2n

2n²

Which of the following is not affected by light

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Which is not property in ether:

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Very weak hydogen bonding

High b.p

Slightly soluble

Inflammable

Which oxide of nitrogen is obtained on heating ammonium nitrate at 250° C?

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Nitric oxide

Nitrous oxide

Nitrogen dioxide

Dinitrogen tetraoxide

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