Question # 1

The basic distinction between solids, liquids and gases lies in difference between.

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Strength of the bonds

Size of molecules

space which the molecules occupy

All of above

Substituted phenyl group are called

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Arene groups

Alkyl groups

Aryl groups

Acyl groups

LiF is a crystalline substance and has

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ionic crystal

metallic crystal

covalent crystal

molecular crystal

The reaction between fat and NaOH is called

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Esterification

Hydrogenolysis

Fermentation

Sponification

Which one is a non-polar compound?

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SnCl2

PH3

Gecl4

H2O

Which property of liquid is measured by polarimeter

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Conductance

Optical activity

Refractiye Indéx

Change in volume

An example of bydrolase is

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Amylase

Lipase

Fumarase

A,C

Which of the following is used as coagulant for purification potable water?

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Copper sulphate

Barium sulphate

Alum

Nickel sulphate

NH₃shows maximum boiling among the hydrides of group V elements. The is due to:

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pyramidal structure of NH₃

H-bonding between its molecules

enhanced electronegative character

very small size of nitrogen

In an electrochemical series, elements are arranged on the basis of

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pH scale

pKa scale

pOH scale

Hydrogen scale

suppose that an ocean of mercury replaced all the air of the air of the earth . How deep would this ocean have to be to exert the same pressure as the air:

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77cm

76cm

79cm

78cm

Two or more similar monomers combine to form:

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Homopolymer

Copolymer

Ter Polymer

Thermoplastic polymers

Which of the following human activities are contaminating surface and ground waters

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Pesticides

Septic tanks

Petroleum and natural gas production

All of these

Unit of ozone is:

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Debye

Dobson

Esu

Coulumb

Hydrolysis of Grignard's reagent gives:

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Alkane

Alkyl

Halide

Alcohol

Components of environment are:

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Atmosphere

Hydrosphere

Lithosphere

All of these

Aspirin is

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Acetyl salicylic acid

Phenyl salicylic acid

Salicylic acid

Benzoic acid

Which one of the following reactions is not spontaneous

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The compounds which have any atom other than Carbon atom, in rings are called as

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Monocyclic

Heterocyclic

Homocyclic

None of the above

Which of these polymers is a synthetic polymer?

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Animal fat

Starch

Cellulose

Polyester

Acetylene when treated with 10% H₂SO₄in the presence of HgSO₄adds one molecule of water to form

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Aldehydes

Esters

Alcohols

Acids

Wacker method involves the conversion of alkene using PdCl₂into corresponding

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Alcohol

Ketone

Aldehyde

Ether

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