Question # 1

The total number of crystal systems and the number of Bra via is lattices are.

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7,7

7,14

14,7

14,28

Suppose a sample is analyzed for a particular constituent by two different method One can tell whether the two average values are significantly different by applying which of the following test.

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Student's test

F test

Chi square test

Variance

Lime water is an aqueous solution of.

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MgSO4

Ca (OH)2

CaCO3

CaSO4

Which of the following is not related to crystallography .

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Law of rational indices

Law of anymmetry

Law of constancy of interfacial angel

Henry's law

The bond length is measured by

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X-ray diffraction

Neutron diffraction

Microwave spectroscopy

All of above

The expected specific waste of paper and allied products industry is.

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Chemicals

Paper and fibre residues

Links

All above

UV radiation from the sun causes a reaction in the atmosphere that leads to production

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Fluorides

Carbon monoxide

Sulphur dioxide

Ozone

At constant temperature , the decrease in Halmholts free energy is equal to.

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Decrease in entropy

Increase in entropy

Reversible work done by the system

All types of work done

Which of the following technique is used for separation of volatile components.

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GC

HPLC

FPLC

TLC

Which of the following is not a property of Ni.

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it is a soft silvery white metal

It is malleable and ductile

It is highly magnetic

It has high electrical and thermal conductivities

Elements in which differentiating electron enters the (n-1) the d-orbitals of the (n-1) the main shell are called elements.

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s- block

p-block

d-block

f-block

Inter halogens are of types.

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3

4

5

6

Boric Acid is used

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In manufacture of pottery glaze

In medicine as an antiseptic

In tanning industry

All above

A terpenoid which as an alcoholic group in the molecule is

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Citral

Camphor

Menthol

Carvone

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

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Tempering

Picking

Machining

Sizing

When two atoms of hydrogen combine to form a molecule of hydrogen gas the energy of the molecule.

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higher than that of the separate atoms

Equal to that of the separate atoms

Lower than that of the separate atoms

Sometimes lower and sometime higher.

Is a chain silicate

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Olivine

Tremolite

Beryl

Zeolite

HS- is a conjugate base of.

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S2-

H2S

H2SO3

H2SO4

Stereotsomers not related to each other as object and minor image are called.

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Enantiomers

Diastereolsomers

Conformations

Antipodes

Which of the following statement is not correct regarding galvanic cells.

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Oxidation occurs at the anode

Ions carry current inside the cell

Electrons flow around the external circuit. form cathode to anode

When the e.m.f. of the cell is positive cell reactionis spontaneous

The bond angle between hybrid orbitals in methane is

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115.5^o

109.5^o

105,7^o

120^o

Pick out the incorrect statement for Xe F6

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XeF6 is hydrolyzed practically to form XeOF4

It reacts with SiO2 to form Xe F4

On complete hydrolysis, it forms XeO3

It acts as F acceptor when treated with alkali metal fluoride, but cannot act as F donor to form complexes.

Arrange the hydrides group 15 in the order of increasing boiling point.

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PH3 < AsH3 <SbH3 < BiH3 <NH3

PH3 <AsH3< SbH3< NH3 < BiH3

PH3 < AsH3<NH3 <SbH3<BiH3

NH3 < PH3 < AsH3 < Sb H3 < BiH3

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 element Uuu has atomic numebr

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102

111

101

110

Which of the following class of compounds follow the criteria of aromatically.

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The compounds must have high degree of unsaturation

they must have the property to undergo addition reactions

They must have the property to undergo substitution reactions

They must have the ability to sustain an induced current in NMR

Water is often treated with chlorine to

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Increases oxygen content

Kill germs

Cause sedimentation

Remove insoluble impurities.

Which of the following case of acid or base strength is not explained by inductive effect.

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Formic acid> acetic acid

Dimethyl amine > trimethyl amine

Dimethyl amine > methyl amine

Chloroacetic acid > acetic acid

The element with maximum first ionization energy is.

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B

N

O

C

Which of the following substance act as photochemical oxidant

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Ozone

NOx

peroxyacetyl nitrate

All above

The solution of the transition metal complexes having one or more unpaired electrons in the d-orbital are.

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Coloured

Colourless

White

None of above

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