Question # 1

In an elimination reaction a more substituted alkene is formed due to the stability associated with

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Free radical

transition state

Activated complex

Carbocation

Macromolecular hypothesis acceptance due to efforts of standinger came about in:

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1910

1920

1930

1940

Lanthanides an actinides belong to following group of periodic table:

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IB

VIIIB

IIB

IIIB

RNA regulate the synthesis of

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Vitamis

Carbohydrate

Proteins

Lipids

The temperature in the incineration process has a range:

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900 to 1000°C

650 to 1100°C

950 to 1300°C

500 to 900°C

In the esterification, first attack is due toon carborylic acid

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Hydrogen ion

Alcohols

Water

All

Boron, aluminium, gallium, indium and thallium belong to group lll-A of the periodic table show a decrease with increasing relative atomic mass:

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Ionic character of the compounds

The first ionization energy

The basic character of the oxides

The stability of +2 oxidation

Real gases deviate from the ideal behaviour at very

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high pressure

low temperature

low pressure

both a and b

The maximum oxidation state of Mn is

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+6

+7

+5

+4

Which of the compounds cannot show positional isomerism?

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Alkanes

Alkenes

Alkynes

Alcohols

AgNO₃ is a polymorphic having two different crystalline forms which are

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cubic, tetragonal

monoclinic, hexagonal

cubic, orthorhombic

orthorhombic, rhombohedral

Ultraviolet radiation from sun causes a reaction that produces

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Fluorides

Carbon monoxide

Sulphur dioxide

Ozone

Which of the following is a steroid

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Vitamin A

Vitamin B

Vitamin C

Vitamin D

SN₂reactions can be best carried out with:

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Prl. alkyl halide

Sec. Alkyl halide

Ter. Alkyl halide

All of three

Which is a good nucleophile?

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F^-1

Cl^-1

Be^-1

I^-1

Amides on treatment with Br₂and KOH are converted into amines, the reaction is known as

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Hoffmann's bromamide reaction

Hoffmann's methylation

Gabriel phthalimide reaction

H.V.Z reaction

A bond between two atoms may be obtained by sharing of electrons such a bond is called

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An ionic bond

A coordinate bond

A dative bond

A covalent bond

Ethyl alcohol reacts with acetyl chloride to form

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Ethyl chloride

Acetic acid

Methyleacetate

Ethyleacetate

Neutrons was discovered by

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Mosely

Milliken

Chadwick

Ruherford

strength of an acid can be determined by

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P^ka

P^kp

P^oH

P^kw

Hydrochloric acid available in the laboratory is 36% w/w. The density of HCl solution is 1.19 g cm^-3. The molarity of HCl solution is

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10.23 moles dm^-3

11.55 moles dm^-3

11.73 moles dm^-3

12.67 moles dm^-3

Which statement is not correct

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Enzymes catalyst a specific reaction

Enzymes show catalytic activity at a specific temperature

The catalytic activity of enzymes is stopped if optimum pH is changed

The catalytic activity is poisoned by a co-enzymes

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