Question # 1

Areal gas obeying Van der Waal's equation will resemble ideal gas ilf the:

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both a and b are large

both a and b are small

a is small and b is large

a is large and b is small

H3O+ can't accept a Ip because

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it has positive charge

The central atom is not electron deficient

The shell of oxygen has reached its limit

it already has a coordinate bond

Which of these polymers is a synthetic polymer?

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Animal fat

Starch

Cellulose

Polyester

The reaction of formaldehyde with HCN is

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Nucleophilic substitution

Electrophilic substitution

Nucleophilic addition

Free radical addition

If an endothermic reaction is allowed to take place very rapidly in air, the temperature of the surrounding air will

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Remains constant

Increase

Decrease

Either increase or decrease

One Joule is equivalent to

Which is not an amino acid

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Lysine

Gylcine

Alanine

Aniline

Leather tanneries use big auantities of:

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Cr Vi salts

Cr III salts

Mn-salts

Pb-salts

Primany aleohols sornally give us aldehyde when oxidized in the presence of acidified Na2Cr2O7, what will be the product, when the secondary alcohols are oxidized in same condition?

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Alkenes

Alkyl halide

Alkynes

Ketones

In crystal structure of sodium chloride,the arrangement of CI^- ions is

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Fcc

Both fcc and bcc

Bcc

None of these

Which method is not used in preparation of acetic acid?

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Oxidation of ethane

Hydrolysis of ethyl acetate

Reaction of CO₂with CH₃MgX

Oxidation of methane

Fresh water of total earth water is:

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1%

2%

3%

4%

Which of the following is a typical transition metal?

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Sc

Y

Ra

Co

5-d series is in the period :

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4th

5th

6th

7th

Alcohol can be denaturated by adding:

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Acetone

Methanol

Pyridine

All

Splitting of spectral lines when atoms are subjected to strong electron field is called

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Zeeman effect

Stark effect

Photoelectric effect

Compton effect

Which one of the following elements is not present in all proteins?

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Carbon

Hydrogen

Nitrogen

Sulphur

In an exothermic reaction

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Enthalpy of reactants is lesser than that of products

Enthalpy of reactants is greater than that of products

Heat is transferred form surrounding into the system

Enthalpy of reactants and products same

A solution having pH = 4 its OH^-ion concentration in mole dm^-3is

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1.0 x 10^-4

1.0 x 10^-10

1.0 x 10^-14

1 x 10⁰

The base used in Cannizzaro's reaction is

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NaOH

KOH

CHI₃

All of these

A solution containing maximum amount of solute dissolved at a given temperature is called

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Saturated solution

Unsaturated solution

Supersaturated solution

Impure solution

Sulphuric acid reacts with PCl₅to give

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Thionyl chloride

Sulphur monochloride

Sulphuryl chloride

Sulphur tetrachloride

The rate of reaction :

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Remain same as reaction proceeds.

May decrease or increase as reaction proceeds .

Increase as reaction proceeds.

Decreases as reaction proceeds.

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