Question # 1

The potential of SHE is taken as zero which is avalue

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Reference

Arbitrary

Exact

Experimental

Hardness of diamond is attributed to the

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strength of the ionic bonds in the structure

three-dimensional network of covalent bonds

absence of valence electrons in carbon atoms

The kinetic energy of three moles of gas is:

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3/2 RT

3 RT

1/2 RT

2 RT

Which of the following solids does not have a covalent bond?

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Silica

Copper

Diamond

Graphite

Among the following the polycyclic aromatic compound is

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Styrene

Naphthalene

Toluene

Acetophenone

Molar mass of formic acid in benzene comes out to be

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64

46

32

92

The rate of reaction for a reaction is 30 mol dm-3sec-1 if the product of concentration of 10.reactant is unity the specific rate constant is

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25

2.5

30

15

lonic solids don't conduct the electrical current because

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ion do not have translatory motion

free electrons are less

the coordination number of the ion is very high

strong covalent bonds are present in their structure

Under which condition CO has the maximum molar volume

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high T and P

Low T and High p

high T and low P

Low T and low P

Ozone is produced in regions:

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tropical

Polor

antaric

equator

The temperature of the gas is raised from 27°C to 927°C the root mean square velocity is

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√927/27 times the earlier value

Same as before

Halved

Doubled

In the atmosphere, O₂is about

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10%

15%

21%

25%

Diversity of organic compounds in millions is:

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Four

Five

Six

Seven

Chromic acid used to oxidize

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Aldehyde

Ketone

Both a and b

None of these

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2-bromonitrobenzene

2-nitrobromobenzene

1-bromonitrobenzene

1-nitrobromobenzene

If the ionic product of a solution is less than the solubility product, the solution is

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Supersaturated

Unsaturated

Ideal

Saturated

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

A dry alkaline cell has porous Zn anode and MnO₂as cathode the electrolyte used is

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Ca(OH)₂

NaOH

KOH

NH₄OH

The difference of potential of two electrodes when concentration of solution is 1M each at 25°C and1 atm is called :

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Cell reaction.

Electrode potential.

Cell voltage.

Standard cell potential.

Which is in differnet phase form other metals

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Ni

Hg

Cd

Na

Among the following the most reactive towards alcoholic KOH is

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CH₂= CHBr

CH₃COCH₂CH₂Br

CH₃CH₂Br

CH₃CH₂CH₂Br

In exothermic reversible reaction increase in temperature shift the equilibrium to :

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Remains unchanged.

Product side.

Reactant side.

None of above.

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