Question # 1

Protein may have

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Primary structure

Secondary structure

Tertiary structure

All of these

Dipole-dipole forces and London forces are collectively called

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hydrogen bonding

Vander Waals forces

Covalent bonding

Ionic bonding

Higher the surface area available for reaction

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slower the reaction

faster the reaction

constant the reaction

lower the Ea

Glucose and fructose are isomers

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Chain isomers

Position isomers

Functional group isomers

Metamers

The maximum hydrogen bonding is in:

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diethyl ether

ethanol

water

benzene

Glycerin boil at 290°C under normal atmospheric pressure. If the pressure is reduced to 50 mm of Hg, it will boil

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above the given temperature

below the given temperature

at the same temperature

at 25°C

Substance that does not show the process of sublimation is

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K2Cr2O7

iodine

naphthalene

NH4CI

The compound that reacts the slowest in Lucas test

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1-Pentanol

sec-butyl alcohol

3-Pentanol

ter- butyl alcoho

Buffer solutions are used in except

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Clinical analysis

Nutrition

Soil science

Qualitative analysis

The heat of reaction depends upon

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Temperature of the reactants

Physical states of the reactants and the products

Both A) and B)

Path of the reaction and the temperature

All of the following are hydroxy containing amino acids except

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Serine

Threonine

Valine

Tyrosine

Hydrogen gas and iodine vapours combine to form Hl at 425°C, the same composition of mixture is present if we start with decomposition of Hl. It suggests

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A static equilibrium

Law of mass action

A dynamic equlibrium

Irreversible reaction

Amiino acids are building blocks of:

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Protein

Carbohydrates

Lipids

Fats

Nitrogen in NH₃is sp³hybridized but the bond angle in NH₃is 107° and not 109.5° due to

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sp³orbital planar

sp³orbital trigonal

Repulsion between lone pair and bonded pairs

None of them

Ether shows the phenomenon of

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position isomerism

Chain isomerism

Metamerism

Cir-trans isomerism

Carboxylic acids react with acids releasing gas from it:

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H2O as steam

CO

CO2

O2

Calcium carbide reacts with water to produce

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Acetylene

Methane

Ethylene

Ethane

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Rutherford's planetary like picture of the atomic modal was defective because

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It did not describe the quantity of positive charge

It did not explain the repulsion of protons within the nucleus

No empty space between nucleus and the electrons

Moving electron should radiate energy

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

The ionization potential is lowest for the

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Halogens

Inert gases

Alkaline earth metals

Alkali metals

Which of the following has greatest tendency to lose electron?

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F

Fr

S

Be

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