Question # 1

The type of hybridization in PCl3 is.

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dsp2

sp3

dsp3

d2sp3

A single chloride free radical can destroy how many ozone molecules

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100

100,000

100,00

unlimited

One of following is argillaceous material

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Marble

Clay

Lime

Marine Shell

NH4NO3 on heating at 200 ^oC changes to

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N2O

NO

NO2

N2O4

Vegetable oils are

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Polyesters

Glycerides of unsaturated fatty acids

Essential oils

Fatty acids

Which one of the following elements shows variable valency, can act as a catalyst and form coloured compounds.

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Carbon

Chlorine

Sulpur

Iron

For which mechanisms, the first step involved is the same.

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E2 and E2

E2 and SN2

SN1 and E2

E1 and SN1

Which one of the following product is not formed when acetic acid is reacted with HI and red phosphorus.

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I2

H2O

CH3CH3

CH3CH2OH

Sodium is collected over molten sodium chloride in Down's cell, because.

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It does not react with NaCl

It is lighter in weight and floats on molten NaCl

Its reactivity is greater than NaCl

None of these

Wohler synthesized first organic compound in laboratory from

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Heating cyanogen's

Cyanogen and ammonium chloride solution

Cyanogen and HNO2

Heating ammonium cyanate

Bone ash contain calcium phosphate

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40%

50%

70%

80%

The percentage of clay and liem stone in cement is in the ratio of.

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1 : 1

1 :2

1:3

3:1

Which is more basic

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RbOH

NaOH

KOH

Li OH

Which statement is correct about the given reaction.

2NaOH + Cl2 --------------- NaCl + NaCIO + H2O

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Cl is oxidized and O is reduced

Cl is reduced and O is oxidized

Cl is oxidized as well as reduced

Neither Cl nor oxygen is reduced or oxidized

Mark the correct statement.

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Na+ is smaller than Na atom

Na+ is large than Na atom

Cl- is smaller than Cl atom

cl- and Cl are equal in size

Which of these polymers is an addition polymer

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Nylon 6, 6

polystyrene

Terylene

epoxy resin

The total number of translation elements is

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10

14

40

65

Which of the following gives acidic oxide

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N

As

Sb

Bi

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