Question # 1

The type of isomerism shown by alkyl halides is

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geometric

functional

positional

metamerism

To which of the following mixtures Dalton's law of partial pressures is not applicable?

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CO and CO₂

CO₂ and N₂

CH₄ and C₂H₆

HCI and NH₃

Polumerization process was classified by

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W.H. Garold

William Hackel

W.H. Carothers

H. Carothers

Properties of polymeric material depends upon

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Chemical composition

Structure of molecule

Boiling point

Both A and B

A covalent bond may be

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100% covalent

Partial ionic

100% ionic

Both a and b

What water freezes at 0∘ , Its density decreases dues to:

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cubic structure of ice

empty spaces present in the structure

change of bond lengths

change of bond angles

Ionic crystals are brittle because

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they have cubic geometry

they are bad conductors of electricity

coordination number of cations and anions is same

cations and anions are arranged in alternate positions in layers

Ethyl and methyl groups are equidistant in a chain, the preference is given to?

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Ethyl

methyl

both ethyl and methyl

methyl mostly

Which one of the following reaction of carboxylic acid is reversible?

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Esterification

Salt formation

Reaction with PCI5

Reaction with SOCI2

How many allotropic forms are present in carbon?

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Two

Four

Three

Five

For incineration temperature range is (in ^oC)

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700-800

800-900

900-1000

1000-1100

A compound contains one atom of oxygen and % of O 34.78, then molecular mass of compound is

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46

78

110

180

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Pent -1-ene-3-yne

2-pentyne-4-ene

1-pentene-3-yne

Pent-2-yen-4-ene

Acid rain is due to increase in atmospheric concentration of

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Ozone and dust

CO₂and CO

SO₃and CO

SO₂and NO₂

Which is liquid among the following alkenes?

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Ethane

Propene

Butene

Pentene

A compound R has all of the following properties. It is neutral; It gives an orange precipitate with 2,4-dinitrophenythydrazine; it evolves hydrogen chloride when treated with PCI₅in the cold What could R be

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Which element should have the greatest value for electronegativity when combined with hydrogen

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Na

Si

S

Cl

Benzophenone can be converted into benzene using

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Fused alkali

Anhydrous AlCl₃

Sodium amalgam in water

Acidfied dichromate

Which of the following does not give iodoform test?

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Ethanol

Ethanal

Acetophenone

Bezophenone

In passage of electricity through aqueous solution of AgNO₃silver dissolves at anode to form Ag⁺, the electrodes are

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Silver metal

Pt metal

Graphite

Copper metal

A bond between two atoms may be obtained by sharing of electrons such a bond is called

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An ionic bond

A coordinate bond

A dative bond

A covalent bond

Which one of the following metal ions is colourless?

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V²⁺

Cr³⁺

Zn²⁺

Ti³⁺

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