Question # 1

Which of the following pairs of not form a dative covalent bond to each other?

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NH₃ and H⁺

H₂O and H⁺

NH₃ and BF₃

CH₄ and AICI₃

Chloroethene, CH₂ = CHC/ is the monomer of PVC.
What are the C-C-C bond angles along the polymeric chain in PVC?

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They are all 109.5°

half are 109.5° and half are 120°

They are all 120°

They are all 180°

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

A compound that has a nucleophilic carbon?

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C2H2

C2H4

C3H8

C6H6

The solubility of Fe(OH)3 is 'x' mole per dm3. Its Ksp would be

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9X3

3X4

27X4

9X4

Which of the following liquid has higher boiling point?

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HCl

HBr

H₂O

Br₂

The buffering property of proteins is due to the presence of

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Acidic and basic group

Hydrogen bonds

Indole group

Hyrophobic

How many zones through which the charge passes in a rotary kiln?

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4

3

2

5

Which of the following is not molecular crystal

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Sugar

Iodine

Ice

Graphite

For the purpose of interacts which one of the following arrangements represents the correct of increasing stability?

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covalent < hydrogen bonding < London forces < dipole-dipole

London forces < hydrogen bonding < dipole-dipole < covalent

London forces < dipole-dipole < hydrogen bonding < covalent

Dipole-dipole < London forces < hydrogen bonding < covalent

Polypeptides are formed from amino acids by

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Oxidation

Addition

Condensation

Reduction

The orbitals having n + l = 5 are

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2p, 3d,3s

3p, 3d, 5s

3s, 4p, 4d

5s, 4p, 3d

Alkyl halides on treatment with metallic Na give

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Alkynes

Alkenes

Alkanes

Alcohols

The malt-sugar in the presence of yeast or invertase gives

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Fructose

Glucose

Lignin

Alcohol

When hydrogen cyanide is added to an Aldehyde in the presence of ammonia it is called

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Strecker synthesis

Cory house synthesis

Williamson;s synthesis

None of these

The fiber which is made from acrylonitrile as monomer:

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PVC

Rayon Fiber

Acrylic fiber

Polyester fiber

The reactivity order of alkyl halides for a particular alkyl group is:

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F >Cl>Br>I

Cl>Br>F>l

l>Br>Cl>F

Br>l>Cl>F

Silver oxide battery has a voltage of

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2.0 V

1.5 V

2.5 V

1.0 V

3.01 x 10²²Ag⁺ions is present in

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85 grams AgNO₃

0.85 g AgNO₃

8.5 g AgNO₃

18.5 g AgNO₃

Chemistry related to the study of environment affected by the chemicals and pollutants is called:

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Biochemistry

Physical chemistry

Pharmaceutical chemistry

Environmental chemistry

The fibre which is made form acrylonitrile as monomer

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PVC

Rayon fibre

Acrylic fibre

Polyester fibre

A carboxylic acid with one caboxyl group:

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Monocarboxylic acid

Dicarboxylic acid

Tricarboxylic acid

Polycarboxylic acid

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