Question # 1

All of the following are primary aminoacids except

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Cysteine

Cystine

Alanine

Arginine

The alternate name of Glucose is

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Dextrose

Grape sugar

Blood sugar

All

The rate of diffusion of a gas is inversely proportional to:

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Density of a gas

Velocity of the gas

Viscosity of the gas

All of above

Higher the surface area available for reaction

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slower the reaction

faster the reaction

constant the reaction

lower the Ea

The dehydration of ethyl alcohol with concentrated H2SO4 at 140°C gives

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Ethene

Alcohol

Diethyl ether

Carboxylic acid

Point out the substance which has maximum vapour pressure at a given temperature?

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Acetone

Water

Ethanol

Acetic acid

Which of the following is not macromolecule?

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Proteins

Carbohydrates

Acrylonitirle

Lipids

Ethene C₂H₄and N₂gases diffuse at the same rate at room temperature. it is due to the reason

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these are non polar gases

their molecular masses are same

both are covalent molecules

both have multiple bonds

How much quantity of total water is available as fresh water

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3%

1%

10%

21%

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

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carbon

hydrogen

nitrogen

sulphur

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

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different

multiples

equal

in fractions

Fluted filter paper is used to:

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Decrease rate of filtration

Increase rate of filtration

Maintain rate of filtration

None of above

In azeotropic mixture showing negative deviation form Raoult's law show

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Higher b.p. than either

Lower b.p. than either

No change in b.p.

None of these

From left to right, atomic radii of transition elements

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Increases

Decreases

Remain same

None of the above

In its reaction with Na, 1 mol of X gives 1 mol of H_2(g). What is X

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CH₃CH₂CH₂CH₂OH

(CH₃)₃COH

CH₃CH₂CH₂CO₂H

CH₃CH(OH)CO₂H

Which of all following compound is not possible

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Gypsum is applied to the soil to provide calcium and

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Oxygen

Nitrogen

Phosphorous

Sulphur

Water H₂O is liquid while hydrogen sulphide H₂S is a gas beause

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Water has higher molecular weight

Hydrogen sulphide is a weak acid

Sulphure has high electronegativity than oxyhe

Water molecules associate through hydrogen bonding

When 6d orbital is complete, the entering electron goes into:

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7f.

7s.

7p.

7d.

Hybridzation explain the --------- of orbitals

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Type of bonding

Shapes

Shape and type of bonding

None of above

A polymeric substance that is formed in the liquid state and then hardened to a rigid solid is called a:

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Fiber

Plastic

Vanish

Polyamide resin

A salt producing hydrocarbon among these compounds is

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Ehyne

Ethene

Methane

Ethane

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