Question # 1

If the rate of the reaction is equal to the rate constant, the order of the reaction is

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3

1

0

2

Which of the following is an addition polymer

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Nylon-6, 6

Polystyrene

Terylene

Epoxy resin

Amount of ozone in atmosphere is expressed in units:

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Kilograms

cm

molarity

DU

Three elements needed for the healthy growth of plants are

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N P K

N K C

N S P

N Ca P

Zn has

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Zero unpaired electrons

Three unpaired electrons

Five unpaired electrons

One paired electrons

The number of reacting molecules whose concentration change during reaction is called

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Activated molecule

Rate of reaction

Order of reaction

half-life

Biochemical oxygen demand (BOD) is the capacity of organic matter in natural water to consume oxygen with in a period of:

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2 days

5 days

6 days

7 days

Which one of the following is an appropriate indication of positive iodoform test?

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Formation of H2O

Brick red precipitate

Release of H2 gas

Yellow precipitate

One of the following is not type of polymer

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homopolymer

copolymer

heteropolymer

terpolymer

Enzymes are catalysts which contain other than carbon and hydrogen one other element

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oxygen

sulphur

phosphorus

iodine

One of the following metals is the most reactive and form super oxide. Indicate that

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Mg

K

Be

Li

On alkali and alkaline earth metals down the group, there is decreasing trend in

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m.p.

b.p.

Ionization potentiall

All of these

Sodium forms largely

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Normal oxides

Per-oxides

Superoxides

None of these

If two lone pairs are present then bond angle of tetrahedral compound reduces to ______ degrees

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109.5°

107.5°

104.5°

None

Benzene was discovered by Michael Faraday's in

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1824

1825

1826

1827

The uncertainty principle was stated only

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De Brogilie

Heinsenberg

Einstein

Schrodinger

Reaction of Grignard's reagent with ketones gives: Reaction of Grignard's reagent with formaldehyde gives:

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Pri-alcohol

Sec-Alcohol

Ter-alcohol

Carboxylic

Gammexane is

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Chlorobenzene

Benzyl chloride

Brommobenzene

Benzene hexachloride

The alkyl halide molecule on which a nucleophile attacks is called

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Substrate

Subsituent

Substituted

All of these

The statement that the properties of every eight elements are similar to the first is the law of

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Dobereiner

Newland

Mendeleev

L. Meyer

Which is not a calcarious material?

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Lime

Clay

Marble

Marine shell

A double bond consists of

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Two sigma bonds

One sigma and one Pi bond

One sigma and two Pi bonds

Two Pi bonds

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