Question # 1

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 structure of sodium chloride is

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simple cube

body centered cubic

face centered cubic

depends upon conditions

The law of distribution of energy is given by

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Clausius

Maxwell

Bernoulli

Boltzmann

Which of the following liquid has higher boiling point?

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HCl

HBr

H₂O

Br₂

In which of the following a re dipole-dipole interaction present?

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molecules of CCL₄

molecules of solid iodine

molecules of NH₃

atoms of the helium gas

The lattice energy of NaCl is

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787 j/ mole

790 kj/mol

780 kJ/ mol

-787 kI / mole

Which property of liquid is measured by polarimeter

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Conductance

Optical activity

Refractiye Indéx

Change in volume

Activity of the enzyme is reduced by

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temperature

concentration

pH

inhibitors

The average bond energy of C-Br is

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228 kJmol-1

250 kJmol-1

200 kJmol-1

290 kJmol-1

The formation of ester from acetic aciad in presence of acid and ethanol is a

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Nucleophilic substitution reaction

Nucleophilic addition reaction

Electrophilic substituion reaction

Electrophilic addition reaction

2,5-dimethyl-1-hexene has

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Two sp2 hybridized carbons

Six sp2 hybrid carbons

Two double bonds

Four pi electrons

The degenerate orbitals p-sub shell are

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2

3

5

7

The boiling point of an a zeotropic mixture of water and ethye alcohol is less than that of water and alcohol. The mixture shows

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That solution is highly saturated

No deviation from Raoult's law

Positive deviation from Raoult's law

Negative deviation from Raoult's law

When an electron is absorbed in an empty or partially filled orbital of an atom, the energy released is called

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Ionization energy

Potential energy

Electron affinity

Bond energy

Which of the following statement about fluorine is not correct?

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Electron affinity of chlorine is greater than that of fluorine

Bond energy of fluorine is less than that of chlorine

Fluorine cannot be prepared by electrolysis of fused metal fluorides

Fluorine does not form oxoacid

Benzene is obtained by fractional distillation of

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Heavy oil

Anthracene oil

Middle oil

Light oil

The bond angle H - O - H in ice ins closest to

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120° , 28^'

60°

90°

109°

Which of the following compounds will not give iodoform test on treatment with I₂/ NaOH?

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Acetaldehyde

Acetone

Butane

3-pentanone

Wohler synthesized first of all the organic compound:

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Carbohydrates

Urea

Aniline

Toluene

In H₂O molecule the bond angle is

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90°

109.5°

107°

104.5°

In an exothermic reaction, a 10° rise in temperature will

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Decrease the value of equilibrium constant

Double the value of K_c

Not produce any change in K_c

Produce some increase in K_c

Closed chain compound can be classified into

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Homocyclic

Hetrocyclic

Aliphatic

Both a and b

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