Question # 1

Which one of the following is not type of polemer

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Copolymer

Homopolymer

Terpolymer

Heteropolymer

Which behaves as insulator for animals body?

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Carbohydrates

Proteins

Fats

Skin

A molecule of polysacharide on hydrolysis produces __________of molecules of monosacharide,

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2 - 10

3

>10

2

Steroid belong to the family of:

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protein

enzyme

lipids

carbohydrates

On the basis of intermolecular forces diamond is a

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ionic solid

covalent solid

metallic solid

molecular solid

The boiling point of H2O is 100°C while that of C2H5-OH is 78.5C°. The reason is that:

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H2O molecules are small-sized

the bond angles at oxygen atom are different

C2H5-group is electron donating

the number of H-bonds are greater in H20, than C2H5-OH

Lead pollution is mainly due to

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Metallic pollution

Space pollution

Acid rain

Cd pollution

Which one of the following enzymes brings about the hydrolysis of fats?

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urease

maltase

zymase

lypase

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

Main cause of reducing map is:

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Combustion of coal

NO and NO₂

Un-burnt hydrocarbons

All of these

Reactivity of carbonyl compounds is due to

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Electrophilic carbon

Less stearic hindrance

Unsaturation of Co

Polarity of bond

In a heterollytic bond fission reaction

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A molecule of H₂O is formed

A molecule of H₂O is eliminated

A free radical is formed

A positive and a negative ion is formed

Ethyl bromide on treatment with alcoholic KOH gives

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Ethylene

Ethanol

Acetic Acid

Ethane

The oxidation state of Fe in [Fe(CN)₆]^3-is

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+2

+3

+4

-3

If the salt bridge is not used between two half cells, then the voltage

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Decrease rapidly

Decrease slowly

Does not change

Drops to zero

A complete chemical Characterization of a compound must include:

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Qualitative analysis

Chemical analysis

Quantitative analysis

None of above

The volume of 0.1 M H₂SO₄required to neutralize completely 40 ml of 0.2 M NaOH solution is

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10 ml

40 ml

20 ml

50 ml

The pH range of the acid rain is:

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7 - 6.5

6.5 - 6

6 - 5.6

Less than 5

By simply reacting Grignand's reagent with water we get

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An alkane

Higher alkane

An alkene

An alkyne

Sodium phenoxide reacts with CO₂at 400 K and 4.7 atm pressure to give

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Sodium salicylate

Salicyl aldehyde

Catechol

Benzoic acid

Organic compounds are soluble in all except

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Benzene

Petroleum

Ether

Water

One of the environmental problem is the formation of oil slicks when oil is spilled from tankers in sea water. Which treatment is suitable to remove oil slicks

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Blow air

Add Na₂CO₃

Use a specially made sorbent having flouring trapped in it

Use a sorbent having Al₂O₃trapped in it

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