Question # 1

Equal volume of all gases at same temperature and pressure contain number of molecules:

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multiples

equal

different

in fractions

Amino acid produce α-hydroxy carboxylic acid when treated with

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KNO₃/HBr

Zn/HCI

NaNO₂/HCI

Pd/BaSO₄

A gas is heated in a closed vessel. Which of the following statement is not true for the gas?

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the intermolecular forces between particles weaken

the kinetic energy of particles increases

the total internal energy of the gas remains constant

the total internal energy of the gas increases

Which of the following is used as coagulant for purification potable water?

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Copper sulphate

Barium sulphate

Alum

Nickel sulphate

Glyoxal molecule has?

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two carbonyl groups

One aldehydic and one carbonyl group

Two aldehydic groups

Two carboxyl group

Vegetable oils are:

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Unsaturated fatty acids

Glycerides of unsaturated fatty acids

Essential oils obtained from plants

The oxidation state of carbon in C2O-²4 is

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+4

-4

+3

+2

Coal contains sulphur in it:

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1-3%

1-6%

1-9%

1-12%

The amount of oxygen in the lithosphere is about

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35.50%

40.60%

46.60%

50.50%

Which of these polymers is an addition polymer

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Nylon 6, 6

Polystyrene

Terylene

Epoxy resin

1, 3, 5-Pentanetriol has secondary carbon

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3

1

2

Zero

Which structure shows a tertiary alcohol

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CH₃CH₂OH

(CH₃)₂CHOH

(CH₃)₃COH

CH₂OH

All 3d series elements show variable oxidation states. The one shown by all 3d elements is

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+2

+3

+4

+5

According to the SI-system heat contents are measured in units of

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Calorie

Joules

Ergs

Watts

Catalytic oxidation of alkanes is used for the preparation of

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Adehydes

Fatty acid

Carbonyylic acids

Ketones

A set of compounds in which reactivity of halogen atom in the ascending order is

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Chlorobenzene, vinyl chloride, chloroethane

Chloroethane, chlorobenzene, vinyl chloride

Vinyl chloride,chlorobenzene chloroethane

Vinyl chloride, chloroethane,chlorobenzene

Oxidation of 2-propanol gives

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Propanone

Butanone

Pentanone

None of these

Solutions containing relatively lower concentrations of solute are called :

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Concentrated solutions.

Lighter solutions.

Dilute solutions.

None of above.

DNA is a polynucleic acid. The monomer is known as a nucleotide. What is not the component of the nucleoptide

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Phosphate group

Deoxy ribose sugar

Uracil base

Adenine base

When CO₂is made to react with ethyl megnesium iodine, followed by hydrolysis, the product formed is:

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Propane

Propanoic acid

Propanal

Propanol

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The ionization energy of A is high and electron affinity of B is low

The ionization energy of A is low and electron affinity of B is high

Both the ionization energy of A and electron off affinity of B are high

Both the ionization energy of A and electron affinity of B are low

What is the molarity of a solution containing 15.0 g urea in 500 cm³of solution

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0.5 M

1 M

1.5 M

2 M

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