Question # 1

The width of a carbon nano tube is.________ nm

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1

1.3

2.5

10

The extinction co efficient has the units.

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cm2 mol -1

cm3 mol-1

mol cm-3

mol cm-1

Which of the following technique in current voltage technique

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Amperometry

Voltammetry

Poteatiomertry

Polarography

An stereospecific enzyme in one which catalyses

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Formation of one stercolsomer

Reaction of one stereoisomer only

Both of these

None of these

1-Chlorobutane on reaction with alcohols potash gives.

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1- butane

1-butanol

2- butane

2- butanol

The bond along Sp2 hybridization is.

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180^o

120^o

109.5^o

160^o

Which of the following state is not correct regarding Langmunir adsorption theory.

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Adsorbent has specific equivalent sites

One site can adsorbs only one molecule

Adsorbed molecules cannot interact with each other

Adsorption is a static process

The constant temperature and pressure,the rates of effusion of various gases vary inversely as square root of their denature. This is a statement of.

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Boyle's law

Charles's law

Graham's law

Daltons's law

Which of the following statements is not relevant to the Plank's quantum Theory.

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Radiant energy is not absorbed or emitted continuously

Radiant energy is emitted or absorbed in the form of small packets of energy.

The quantum oflight energy is called photon

The energy associated with photon of radiation is directly proportional to the wavelength.

Which of the following factor is involved in band boarding that occur in column chromatography.

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Number of theoretical plates

Eddy diffusion

In phase mass transfer

All above

Which of the following gas does not exist free on earth.

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N2

H2

O2

CH4

The oxidation state shown by phosphorus is.

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- 3

+ 3

+ 3 and +5

-3 ,+ 3 and +5

When HCl is titrated against NaOH , the pH at the equivalence point is.

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zero

> 7

< 7

14

The use of acids to remove oxides and acids on hot worked steels is known as

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Tempering

Picking

Machining

Sizing

Are used as water repellents

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Carbides

Silicon

Silicones

Silicates

A terpenoid which has as alcoholic group in the molecule is.

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Citral

Camphor

Menthol

Carvone

Glass industry requires soda ash with

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Solids density 1.91 and bulk density 1.0

Solids density 1.86 and bulk density 0.6

Solid density 1.80 and bulk density 0.58

All of above

Burning of fossil fuels is the main sources of which of the following pollutant.

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Nitrogen oxide

Nitric oxide

Nitrous oxide

Sulphur dioxide

Lother Meyer plotted a graph showing variation of.

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Atomic volume with increase in atomic number

Atomic volume with increase in atomic weight

Atomic redii with increase in atomic weight.

Atomic weight which increase in atomic number

Not a major contributor of engineering ceramics

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SiC

SiO2

Si3N4

BH3

Pick out the incorrect statement about K2Cr2O7

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It is thermally stable

It dissolves in alkali to form chromate

It oxidizes acidified FeSO4 solution to Fe2(SO4)3

It is used as cleansing agent for glassware. etc. When mixed with cold con. H2SO4

Linear molecules have ____________ axis of rotation

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C1

C2

C

C3

The compounds whose formation require a host compound and a guest compound are called.

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Exclusion compounds

Inclusion compounds

Crystal compounds

None of the above

The separation efficiency of a column can be expressed in terms of number of.

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Solvents used

Theoretical plates

Stationary phases

Mobile phases

Nano technology in other words is.

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Carbon engineering

Atomic engineering

Small technology

Microphysics

Which of the following reactions does not take place with light radiation.

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Oxidation

Reduction

Polymerization

Double displacement

What element is added to copper to make it extremely hard.

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Aluminum

Zinc

Lead

Tin

The ease of hydrohalogenation of alkyl halide with alcoholic KOH is.

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3^o > 2^o > 1^o

3^o < 2_o <1^o

3^o > 2^o < 1^o

3^o < 2 ^o > 1^o

An example of acyclic polytropenoid is

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Myrcone

Buna -S

Synthetic rubber

Natural rubber

The value of comprehensibility factor (z) = pV/nRTfor an ideal gas is equal to.

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R

1

2

3

Nitric acid is used in manufacturing of.

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Explosive

H2SO4

Fertilizer

All above

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