Question # 1

Which sequence of steps is correct in paper making machine

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Pressing Dyring, Flow spreader Calender stock

Flow spreader, Pressing, Prying Calender sock

Drying ,Pressing , Flow spreader, Calender stock

None of above

Which of the following is not a proper use of Ni.

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It is used as catalyst

It is used in alloy formation

It is used in the preparation of Monel metal

It is attached by alkalis

Which one of the following sets of elements has the strongest tendency to form negative ions in gaseous state.

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NA, Mg, Al

Ca, V, Cr

N , O, F

Ga, ln, tI

Which of the following potassium fertilizers are more useful for horticultural crops tobacco and potatatoes.

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KNO3

KCl

HNO3

H2SO4

The statement that heat cannot flow spontaneously from a colder to a hotter body is the result of.

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The first law of thermodynamics

The second law of thermodynamics

The third law of thermodynamics

Henry's law

The 'shape' of molecule ." Xe F6 is.

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Pentagonal bipyramidal

Regular octahedral

Distorted octahedral

Square planar

According to Henry's Law. the mole fraction of a gas (x) dissolved in a solvent is related to the pressure of the gas.

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x = k/p

x = p/k

x = k

p = k/x

Which of the following item is not symmetry element.

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Pllane of symmetry

Inversion centre

Improper rotation

Optical activity

When steam is passed over red bot coke The product formed is

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Hydrogen and carbon dioxide

Mixture of hydrogen and carbon monoxide

Mixture of hydrogen and oxygen

Heavy hydrogen

Which parameter of a chemical reaction will change with the use of a catalyst.

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Delta F, change in free energy

Delta S, change in entropy

Delta E , change in internal energy

K, the rate constant

In the Lewis formula of which of the following species, the number of single double and dative bonds are equal.

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N2O3

HNO3

SO2

SOCl2

In manufacturing of cement crystallization of amorphous dehydration products of clay

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500 ^oC to 800 ^oC

900 ^oC to 1200^oC

1250 ^oC ti 1400 ^oC

1000 to 1100 ^oC

The property associated in thermometric tittration is

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Change in weight

Rate of change in weight

Heat evolved or absorbed

Change in temperature

Which of the following pair on aldol condensation followed by dehydration gives methyl vinyl ketone.

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HCHO and CH3COCH3

HCHO and CH3CHO

CH3CHO and CH3CHO

CH3COCH3 and CH3COCH3

For a given mass of a gas at constant temperature, if the value V becomes a times, the pressure will become.

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3P

P/3

9P

3P/T

An example of acrylic monoterpenoid is

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Dipentene

Myocene

a- terpineol

Limonene

Environmental pollution effects.

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Biotic component

Plants only

Humans only

Both biotic and abiotic components of environment

An element with high electronegativity has

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High IE and high EA

High IE and low EA

Low IE and High EA

Low IE and low EA

Which of the following statement is no true with respect to nitrogen dioxide.

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It is produced by the oxidation of NO

Its small concentration has been detected to lower stratosphere

It is major pollutant

It does not absorb sunlight.

Alums are generally used

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In Dying and water proofing of fabric

In arrest bleeding

IN water purification

All above

The decomposition of dimethyl ether at 504 oC is first order with a half -life of 1570 second. What fraction of an initial amount of dimethyl ether remain after 47-10 seconds.

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1/3

1/6

1/8

1/16

Which of the following substance is released into environment in the nuclear power plants.

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Iodine -131

Argon - 41

Sr-90

Cs- 137

All above

The geometry of the molecule is primarily decided by

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Bond pairs around the central atom

No of k bond around the central atom

No of bond pairs as well as lone pairs around the central atom

No. of lone pairs on central atom

The Schrodinger equation when solved for any system gives.

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The mean force path

The Polarizability

The energy function

The wave function

All bond length in benzene are identical due to.

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Resonance effect

Inductomeric effect

Electromeric effect

Mesomeric effect

Noble gases are used in discharge tubes to give different colours. Raddish orange glow is due to.

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Ar

Ne

Xe

Kr

Excluding H-atom , Hydrogen bond never involves more than atoms.

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One

Two

Three

Four

In which of the following compound valency of carbon in 4 but its oxidation number is zero

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Methane

Carbon dioxide

Carbon monoxide

Formaldeyde

Which of the following is not a correct postulate of the kinetic theory of gases.

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The molecules are in random motion

The gaseous collisions are perfectly elastic

The average kinetic energies of different gases are equal at a particular temperature.

The pressure exerted on the walls of the container is due to inter molecular forces.

The bromine produced on commercial scale may contain impurities of.

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Water

Chloride

iodine

All above

For a single -component system, the maximum degree of freedom in

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1

2

3

Between 3 and 6

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