Question # 1

The clotting time of blood is increased due to the deficiency of

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vitamin A

vitamin K

vitamin D

vitamin C

In the esterification, first attack is due toon carborylic acid

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Hydrogen ion

Alcohols

Water

All

Denaturation of protein means the structure of protein is disrupted indicate which factor does not denature protein

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oxidizing agent

heat protein

keeping pH 7.35

pH changes

The pH of ideal buffer is

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10

7

Less than 7

0

Phenomenon of acid rains gain importance in:

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1930s

1940s

1950s

1960s

The existence of an element in more than one form is called

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allotropy

isomorphism

polymorphism

isotropy

A pollutant affects

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Human affects

Quality of life

Functioning of ecosystem

All of these

Which of the following protein is used to make buttons

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Gelatin

Callogen

Albumin

Casein

The type of isomerism shown by alkyl halides is

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geometric

functional

positional

metamerism

The relationship between volume of a given amount of gas and prevailing conditions of temperature and pressure are:

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Charle's law

Graham's law

Boyle's law

Gas laws

Zinc reacts with dilute acids to liberate hydrogen. This is because:

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Zn2+ ion is a powertul osidising agent than H' ion

H+ ion is a powerful oxidising agent than Zn ion

Zn2+ ion is a powerful reducing agent than H' ion

H+' ion is a powerful reducing agent than Zn- ian

In which of the following reactions is the inorganic reagent acting as a nucleophile

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Which of the following substances is used as an antiknock compound?

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Tetraethyl lead

Lead tetrachloride

Lead acetate

Ethyle acetate

Which of the hydrogen halides has the highest percentage of ionic character

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HCl

HBr

HF

HI

A zero order reaction is one in which :

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Rate is not affected by changing concentration of reactants.

concentration of reactants do not change with the passage of time.

Reactants do not react.

One reactants in large excess.

Which of the following will have the highest boiling point at 1 atm pressure?

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0.1 M NaCl

0.1 M Sucrose

0.1 M BaCl₂

0.1 M Glucose

Alkyle magnesium halides are known as

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Simon-smith reagent

Tollen's reagent

Grignard's reagent

Barford's reagent

Bond angle is minimum for

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H₂O

H₂S

H₂Se

H₂Te

In Lucas test primary alcohol make as oily layer

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Immediately

In 10 mins

On heating

Not

A nuclophile must

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Be an atom

A group of atoms

Have a lone pair

Be negatively charged

Hydrocarbon which is liquid at room temperature is

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Pentane

Butane

Propane

Ethane

Which of the following is not correct about transition metals?

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Their melting and boiling points are high

Their compounds are generally coloured

They can form ionic or covalent compounds

They do not exhibit variable valency

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