Question # 1

α and β Glucose differs in orientation of hydroxyl group around

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C₁

C₂

C₃

C₄

General gas equation is combination of

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Boyle s law

Avogadro s law

Charles s law

All of these

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

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carbon

hydrogen

nitrogen

sulphur

Carboxylic acid can be prepared from the reaction of Grigard's reagent with:

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Aldehydes

Ketones

Formaldehyde

CO₂

The partial pressure of 0₂in the lungus is

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116 torr

159 torr

560 torr

760 torr

Partial pressure of gases in a mixture depend upon:

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Number of moles

Number of protons

Number of electrons

Number of neutrons

Which one of the following molecules show maximum hydrogen bonding?

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H₂O

H₂Se

H₂S

HF

Crystal lattice of the substances can be categorized into

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five types

seven types

six types

none of these

When the concentration of product is increased the instantaneous rate of reaction with reference to reactants will be

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Positive

Negative

the same

falling curve

Which one of the following is an organic compound?

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Calcium carbide

Calcium cyanide

Carbon disulphide

None of these

Plastics are pollution problem because many plastics

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Are made from petroleum

Are very inflammable

Burn to produce toxic fumes

Decompose to produce toxic products

Orbitals having same energy are called

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Hybrid orbitals

Valence orbitals

Degenerate orbitals

D-orbitals

Group l-A elements react with water fastly than the reaction of group ll-A elements because

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l_Aelements are more soft then ll_A

l_Aelements are non-metals

l_Aelements have 1 electron in their outermost s-orbital and are strongly electropositive

l_Aelements make ionic bond

Which acid is used in the manufacture of synthetic fibre

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Formic acid

Phthalic acid

Carbonic acid

Acetic acid

If acetyl chloride is reducing in the presence of BaSO₄and Pd, then

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CH₃CHO is formed

CH₃CH₂OH is formed

CH₃COOH is formed

CH₃COCH₃is formed

The solubility product of AgCl is 2.0 x 10^-10mole ²dm^-6. The maximum concentration of Ag⁺ions in the solution is

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2.0 x 10^-10mole dm^-3

1.41 x 10^-5mole dm^-3

1.0 x 10^-10

4.0 x 10^-20mole dm^-3

Which of the following molecules has zero dipole moment>

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NH₃

CHCl₃

H₂O

BF₃

Which is made by coordinate covalent bond

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H₃O⁺

H₂O

CH₄

HCl

The reaction of sodium with ethanol gives

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CH₃OH

NaH

H₂O

H₂

3 moles of ethanol react with one mole of phosphorus tribromide to from 3 moles of bromoethane and on mole of X. Which of the following is X?

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H₃PO₄

H₃PO₂

HPO₃

H₃PO₃

Which of the following is a tetrabasic acid?

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ORthophosphoric acid

Hyposphosphorus acid

Metaphosphoric

Pyrophosphoric acid

Sodium should be stored in

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Air free from moisture

Air free form carbon dioxide

Under water

Under kerosene oil

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