Question # 1

Factors affected denaturation of proteins:

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Change in temp and pH

Strong reducing agent

Strong oxidizing agent

All of these

Covalent bonds are

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directional

Bidirectional

Multidirectional

Non directional

In solid, the temperature is the measure of:

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Rotational kinetic energies.

Translational kinetic energies.

Vibrational kinetic energies.

None of above.

The highest melting point is observed by

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Butanoic acid

Propanoic acid

Pentanoie acid

HCI

The main pollution leather tanneries in the waste water is due to the salt of:

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chromium

copper

calcium

lead

Alcohols of low molecular weight are:

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Soluble in water

Insoluble in water

Soluble in water on heating

Insoluble in all solvents

Which one of the following statements about glucose and sucrose is incorrect

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Both are soluble in water

Both are naturally occurring

Both are carbohydrates

Both are disacharides

Density of a gas increases by

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increasing value of R

decreasing value of R

increasing T

decreasing T

A line parallel to x-axis is obtained when graph is drawn between

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Volume on abscissa & pressure on ordinate

Volume on abscissa & PV on ordinate at all conditions

Pressure on abscissa & PV on ordinate at constant temperature

None of these

Smell of cooking gas during leakage from gas cylinder is detected because of the property of:

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Effusion

Evapotration

Diffusion

Conduction

Which of the following factors is not used to determine the quality of water

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COD

BOD

DO

Available chlorine

Which for the following has no dipole moment

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HCI

H₂S

H₂O

CO₂

Internal energy of a system is equal to

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Kinetic energy of particles

Potential energy due to binding forces between particles

Sum of kinetic energy plus potential energy of the particles

Heat contents

Wohler succeeded in obtaining, urea from

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Cyanogen

Ammonium cyanate

Ammonium hydroxide

None of these

For every reaction occurring in the body three is at least one type of

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Enzyme

Vitamin

Protein

Amino acid

Which is not a nucleophile

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Benzene

Chlorine

Ethene

Ethanol

Which one of the following gases is used for artificial ripening of fruits

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Ethene

Ethane

Methane

Propane

The ionic strength of a solution containing 0.1 mole/kg of KCl and 0.2 mole/kg of CuSO₄is

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0.3

0.6

0.9

0.2

Primary and secondary alcohols on action of red hot copper give

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Aldehydes and ketones respectilvely

ketones and aldehydes respectively

Only aldehydes

Only ketones

Which of the following with aqueous KOH will give acetaldehyde?

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1, 2-Dichloroethane

1,1-Dichloroethane

Chloracetic acid

Ethyl chloride

Carboxylic acids are reduced to in presence of NaAIH₄

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Esters

Acetyl chloride

alcohol

Aldehydes

Shape of CIO₃is

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Triangular pyramidal

Tetrahedral

Triangular planar

Triangular bipyramidal

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