Question # 1

Classification of polymerization into two types was suggested by

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W.H Carothers

Staudinger

OSwald

Aspdin

Geometry of NH3 is

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^Tetrahedral

Square planer

Pyramidal

Linear

Based on the physico-chemical properties, proteins may be classified into the following types

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Simple proteins

Compound proteins

Derived proteins

All of the above

Hydrosphere includes

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Seas and rivers

Ocean & polar ice caps

Ground water

All of above

Viscosity of a liquid is measured by

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barometer

thermometer

viscometer

manometer

Which of the following reactions does not involve formation of carbocation?

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SN1 and E1

El and E2

SN1 and SN2

E2 and SN2

Change in enthalpy (∆H) of a system can be calculated by

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∆H=∆E - PV

ΔH =ΔE +q

∆H = ∆E - q

∆Η = ΔΕ + P∆V

Which of the following is pure substance

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Distilled water

, Sea water

, NaCl (aq)

Brass

which chlorine compound has bonding that can be described as ionic with some convalent character?

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NaCI

MgCI₂

AICI₃

SiCI₄

Ornithine is

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A basic amino acid

An essential amino acid

Present in protein structure

All of these

Proteins are the polymers of amino acids having

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NH₂ group only

OH^-group only

NH₂andOH^- group

NH₂and COOH group

Which is in differnet phase form other metals

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Ni

Hg

Cd

Na

The reference calomel electrode is made from which of the following?

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ZnCl₂

CuSO₄

Hg₂Cl₂

HgCl₂

Ecology is a science of environment and deals specially with

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Stratosphere

Biosphere

Lithosphere

Hydrosphere

Size of an anion is increased as compared to its atom because of the

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Addition of new shell

Repulsion of electrons in the valence shell

Decrease in nuclear charge

Increase in the unclear charge

Carboxyl compounds have functional group:

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R-C-X

R-CH=O

RCOR

All

The elements like boron, chlorine, cobalt, copper etc are added in small amounts to the soil. They are called

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Macrountrients

Trace elemetns

Micronutrients

Additives

Which one is a polymer compound?

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SO₂

CO₂

CH₄

PVC

The percentage of nitrogen in ammonium nitrate is

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32 - 33.5%

34 - 36%

40 - 45%

None of these

K_bfor NH₄OH is 1.81 x 10^-5, then K_avalue of its conjugate base is

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1.81 x 10⁺⁵

1.81 x 10^-9

5.5 x 10^-9

5.5 x 10^-10

The number of atoms present in molecule determines its:

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Molecularity

Atomicity

Basicity

Acidity

Carboxylic acids are reduced to in presence of NaAIH₄

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Esters

Acetyl chloride

alcohol

Aldehydes

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