Question # 1

Monomer of Nylon -6 is

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Adipic acid

Hexamethylenediamine

Caprolactam

All of these

Which of the following statement is not correct with respect to electrometric effect.

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It is permanent effect

It is brought into play instantaneously at the demand of attacking reagent

It proceeds a polar addition reaction

The original electronic condition is restored after the removal of tacking regent.

Of the molecules, SF4 Xe F4 and CF4 which have square planar geometry.

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SF4 , Xe f4 and CF4

SF4 only

CF4 only

XeF4 only

Which of the following steps in involved in the metallurgy of aluminium.

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Purification of bauxite

Electrolytic reduction of alumina

Refining of aluminum

All above

Which of the following molecule does not contain the covalent bond between similar atoms.

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N2H4

F2O2

H2F2

H2O2

An optically active compound

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_{Must contain at least favour carbons}

When in solution rotate the plane of polarized light

Most always contain an asymmetric carbon atom

In solution always give negative reading in polarimetre

Which substance has the greatest lattice energy.

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CuBr

MgO

KI

NaF

Which of the following is domain of industrial ecology.

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The materials extractor

The materials processor

The consumer

All of above

The denationalization involving C - H sigma bond electrons is known as .

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Conjugation

Hyperconjugation

Mesomerism

Resonance

Any property whose magnitude is independent of the amount of substance present is called a/an

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Extensive property

Colligative property

Structural propety

Intensive property

The process in which ore is heated generally in the presence of air, at temperature below their melting points is called.

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Calcination

Roasting

Fourth floatation

besemerization

In the process of electrosmosis

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Colloidial particles move towards the electrodes

Both colloidal particles and dis persons medium move

Only dispersion medium moves to carry the current

Positively charged colloidal particles move, but negatively charged particles remain stationary

Both the elements are typical non metals.

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B & Ai

B & Si

Al & Si

Any of above

The width of a carbon nano tube is.________ nm

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1

1.3

2.5

10

Poise is a unit of.

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Refractive index

Optical activity

Fluidity

Viscosity

Which of the following hydroxide is amphoteric.

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B(OH)3

Al(OH)3

Ga (OH)3

In (OH)3

The electrolytic method super passes all other methods due to.

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Furity

Cheapness

Easy available

All above

Which of the following statement is not correct n respect of Arrhenius concept.

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The concept is applicable only for aqueous systems.

Neutralization takes place in aqueous mediam only

TH+ ion cannot remain as such in water

This concept is applicable for non aqueous system only.

Which of the following statement is not correct with respect to group theory.

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Two elements of a group combine to form a third element of a group

An element combines with itself to form another element of the group.

Each element of the group obey associative law of combination

Each group element has no reciprocal

The steroid which plays an important role in carbohydrate metabolism is.

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Oestrone

Progestrrone.

Androsterone

Cortisone

Glass electrode cannot be used to measure the pH of pure.

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Acetic acid

Ethyl alcohol

Gelatin

All above

The deficiency of which vitamin leads to beri brainteaser

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Thiamine

Riboflavin

Pyridoxine

Asorbic acid

The formula of copper pyrite is.

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CuFeS

CuFeS2

Cu2FEs

Cu Fe2S

Which of the following does not apply to metallic bond.

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Overlapping valence orbitals

Mobile valency electron

Delocalized electrons

Highly directed bonds

Which of the following process is not physical in nature.

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Mixing

Flocculation

Sedimentation

Activated sludge process

Water is often treated with chlorine to

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Increases oxygen content

Kill germs

Cause sedimentation

Remove insoluble impurities.

Which of the following techniques is used to separate a mixture of cations.

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GC

FPLC

Ion exchange chromatography

Size exchange chromatography

Compounds consisting of two or more interlocked rings are called.

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Inclusion compounds

Cage compounds

Catenanes

Crown other

How many oxygen atoms lined up in a now would fit in a one nanometer speace.

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None an oxygen atoms is bigger than 1 nm

One

Seven

None of the above

Which of the following is strongest reducing agent.

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Be

Mg

Ca

Sr

Which one of following is paramagnetic and has the bond order equal to 0.57

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N2

H2+

O2

F2

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