Question # 1

Most of the universe consists of the matter in :

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Gaseous state

Liquid state

Plazma state

Solid state

Keeping the temperature constant, if the gas is expended:

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Kinetic energy of molecules will increase.

Number of gas molecules increases.

Temperature will increase.

Pressure will decrease.

Which one is non-reducing sugar?

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sucrose

glucose

fructose

galactose

For an endothermic reaction, enthalpy of reactants

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Is smaller than that of the products

Is greater than that of the products

Must be greater or smaller than that of the products

Is equal to that of the products

The region of earth capable of supporting life is

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Hydrosphere

Lithosphere

Biosphere

Atmosphere

The transition temperature of KNO3, is

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13.2°C

95.5°C

128°C

32.02°C

Carbohydrate that cannot be digested by human digestive system is

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Cellulose

Glycogen

Starch

All of these

Which one of the following is not type of polemer

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Copolymer

Homopolymer

Terpolymer

Heteropolymer

Which one of the following is NOT a nucleophile

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NH2+

BF3

H2O

CH3-

Ethane when completely halogenated in excess of chiorine can form

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Hexachloroethane

Dichloroethane

Pentachloroethane

1.1.2.2-terachloroethane

Hardness which can be removed by boiling is called

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Permanent hardness

Temporary hardness

Stiffness

Toughness

When electric current is used to carry out non-spontaneous redox, the process is called

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Hydrolysis

Electrolysis

Decomposition

Neutralization

When an aqueous solution of potassium salt of monocarboxylic acid is subjected to electrolysis, corresponding alkane is formed. This reation is known as

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Cannizaro reaction

Sabatier-secderens reaction

Alkylation

Kolbe's reaction

Bohr model of atom is contradicted by:

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Planck's quantum theory

Pauli's exclusion theory

Heisenberg's uncertainty principle.

All of above.

A salt producing hydrocarbon among these compounds is

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Ehyne

Ethene

Methane

Ethane

______ are called biocatalysts

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Organic acids

Organic bases

Enzymes

All

According to MO Theory, the species O₂+ possesses

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bond order of 2.5

three unpaired

diamagnetic character

stability lower then O₂

Rectified spirit contains alcohol about:

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80%

85%

90%

95%

3.6% WN solution of HCI has the molairity

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1.0

1.15

0.98

1.98

Which of the following is not an ortho-para directing group

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The pH of 10^-3mole dm^-3of an aqueous solution of H₂SO₄is

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3.0

2.7

2.0

1.5

How many molecules of chlorine adds in benzene in the presence of sunlight

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One

Two

Three

Four

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