Question # 1

The osmotic pressure of a solution with definite composition.

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Varies directly as the volume and temperature.

Various inversely as the temperature.

Varies inversely as the volume and directly as the temperature.

None of the above

Orion is polymer of.

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Styrene

CF2 = CF2

Vinyl chloride

Acrylontrile

Select a basic amino acid.

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Glycine

Cystine

Alanine

Lysine

Which one of the following is natural polymer.

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Starch

Nylon-6

Neoprene

Buna-S, SBR

The range of sound pressure which is painful is as

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130-140 dB

100 - 120 dB

90 - 80 dB

All above

Molecules have zero dipole moment

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CO2

BCl3

CH4 & CCl4

All above

Oxalic acid when heated withe conc. H2SO4 it gives out.

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H2O and CO2

CO and CO2

CO2 and H2S

Oxalic sulphate

Which of the following analytical technique is used for separating similar substance by preferential adsorption or partition between two phases.

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Distillation

Dialysis

Chromatography

Solvent extraction

The terpenoid present in oil of lemon grass is

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Citral

Geranial

Nerol

a- terpineol

Which of the following is not chemical characteristics of water.

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pH

COD

BOD

Colour

Which of the following is the most suitable catalyst for ammonia synthesis.

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Pt

ZnO+ Cr2O3

Fe in fused mixture of Al2O3 + SiO2+ MgO

All of above

Which of the following does not represent Lewis base.

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Pyridine

NaNH2

PCl3

NaOH

Which of the following elements is most electropositive.

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C

N

O

Be

The dyes which are produced on the fibre in suit by reactions are known as.

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Mordant dyes

Fast dyme

Ingrain dyes

Disperse dyes

Which metal burns in air at high temperature with the evolution of much heat.

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Cu

Hg

Pb

Al

Give violet colour to flame

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Gallium

indium

Thallium

Aluminium

Which of the following substance acts as gaseous pollutant.

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NO

NO2

CO

SO2

All above

Used in Geiger counter to detect radioactivity

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He

Ne

Ar

Kr

Among the elements A, B,C and D having atomic numbers 7,8,9 AND 12 Respectively, the element with smallest size and highest IE is.

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A

B

C

D

Example of intra molecular hydrogen bonding.

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O-nitrophenol

O-hydroxy benzaldehyde

O- hydroxy benzoic acid

All of the above

The percentage of nitrogen in Urea is _____________%

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46

37

82

50

Ammonia is utilized for

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Manufacture of urea

Oxidation to nitric acid

Manufacture of ammonium sulphate

All above

The orientation of a crystalline surface is confidently defined in terms of.

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Lijima Indices

Miller indices

Clausen indices

None

The law of triads is applicable to

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Lithium, beryllium, boron

Fluorine, chlorine, bromine

Chlorine, bromine, iodine

Sodium, potassium, Rubidium

Which of the following substance is colloidal in nature.

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Clay

Al2O3

Fe2O3

All above

Formula of orthophosphoric acid.

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H2PO4

H3PO3

H3PO2

H4P2O5

Coulometry is based on the measurement of

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Electrical current

Electrical potential

Electrical conductance

Dielectric constant

In the process of preparation of detergents the organic acids produced are neutralized with.

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Sodium hydroxide

Sodium sulphate

Sodium chloride

Potassium hydroxide

The number of mole of the solute dissolved per dm3 of the solution is called.

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Molality

Formality

Normality

Molarity

Temporary hardness of water is due to.

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Bicarbonates of K

Bicarbonates of Na

Carbonates of Ca

Bicarbonates of Ca

The halide which is inert to water is

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PCl5

SiCl4

BCl3

SF3

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