Question # 1

Property due to which water acts as a universal solvent is

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Polarity

It's ability to make hydrogen bond

Both A and B

Strong dipole dipole interaction

Which one of the pollutants of automobile exhausts affects the nervous system or produces mental diseases?

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NO₂

SO₂

Hg

Pb

The mechanism of polymerization involves free radical addition polymerization or condensation polymerization. Choose the correct statement

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Polyester is an addition polymer

Polythene is an addition polymer

Polyvinyl chloride (PVC) is a condensation polymer

Polystyrene

A single chlorine free radical can destory how many ozone molecules

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10

100

1000

10000

The morality of the solution containing x grams ammonium sulfate in 500cm3 of the solution is 0.6 what is x?

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39.6

40.5

42.7

45.1

Which of the following alkyl halides shows higher reactivity?

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R __ F

R __ CI

R __ Br

R __ I

a hole used to dump the municipal wastes is called:

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landfill

effluents

leachate

inclneration

Water is made disinfectant during purification of water to the step:

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aeration

coagulation

chlorination

treatment

Which element differs from rest of elements of its group?

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Ba

Mg

Ca

Be

Which of the following is a pseudo solid?

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CaF₂

glass

NaCl

all these

The shielding effect of inner electron is responsible for

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Having no effect on ionization energy

Decreasing ionization energy

Increasing ionization energy

Increasing electronegativity

Where lime is not used

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In refining or metals

In paper industry

In glass industry

In the preparation of NaOH

Zn + HCI are used in

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Clemenson reduction

Wof kishner reduction

Kolb's electrolysis

Wutruz reaction

The electrophile in aromatic sulphonation is

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H₂SO₄

HSO₄

SO₃

SO₃⁺

The elements of f-block are also known as

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Inner-transition

Outer transition

Normal elements

Alkaline earth metals

The next homologue of C₁₀H₂₂will be

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C₉H₂₀

C₁₂H₂₆

C₁₁H₂₄

C₁₃H₂₈

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Metal used in the preparation of Grignard's reagent is:

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Ca

Na

Mg

Zn

In CCL4 solvent I3 shows:

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Blue Color

Brown Color

Purple Color

Pink Color

The shape of CIO^-₃according to valence shell electron pair repulsion theory will be

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Planar triangle

Pyramidal

Tetrahedral

Square planar

Which of the followings is not a nulceophile

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OH^-

NH₃

C₂H₅O^-

Br₂

Titanium is used as a catalyst in

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Hydrogenation

Dehydrogenation

Polymerization of P.E.

Oxidation of ammonia

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