Question # 1

Separation of isotopes of uranium is carried out by

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CaF2

SF6

HF

All above

Which of the following is capable of forming zwitter ion.

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Amino acids

Halo acids

Hydroxy acids

All of these

The substance added to the soil to provide one or more nutrient elements essential for plants growth are called.

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Growth hormones

Fertilizers

Salts

Minerals

The most common oxidation state of alkaline earth metals is.

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+1

+2

-2

-1

According to the Grothus -Draper law

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Only absorbed light is effective in producing photo chemical changes

Only light between certain wavelengths

Light is effective only for photo chemical reactions is solution

The light absorbed in proportional to its intensity

As it passes into food chain, the concentration of DDT

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Remains same

Decreases

Increases

Unpredictable

Smoke is a dispersion of

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Gas in gas

Gas in solid

Solid in gas

Liquid in gas

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.

The suffix '-ene' in the name of fullerene shows the presence of ___ in the molecule.

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One triple bond

One double bond

Two single bonds

Two triple bonds

The capacity of normal human eye to see the smallest object is _______ micro meter

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10000

1000

100

10

The hybridization of sulphur in sulphur dioxide is.

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sp

sp2

sp3

dsp2

The special chrome steels of the stainless variety contain how many percent of chromium.

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4 to 8

11 to 17

9 tp 10

12 to 15

Formula of orthophosphoric acid.

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H2PO4

H3PO3

H3PO2

H4P2O5

Monomers are Teflon is

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Monochloroethene

1,2- Difluoroethene

1,1,2- Trifluoroethene

Tetrafluoroethene

Which of the following water require zero hardness.

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Boiler feed water

Laundry water

Paper will water

Dyeing water

In confining and growing nano roade CNTs will act as.

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Template

Support

Source of oxidant

Sieve

Which of the following is the weakest base.

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KOH

NaOH

LiOH

RbOH

Recrystallization is the most common technique of purification of solid organic substances Which of the following statements is not related with characteristics of a suitable solvent.

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It dissolves the substance on heating

It readily allows it to separate out in the form of crystal on cooling

It does not react chemically with substance

It does dissolve the impurities.

Which of the following disposal method is used for agriculture wastes.

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Dump

Landfill

Incineration

Open burning

All above

The temperature at which the vapour pressure becomes equal to external pressure is called.

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Saturation point

Critical temperature

Consolute temperature

Boiling point

Peppermint oil contains.

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Menthol

Thymol

a-pinene

Comphene

Enfleurage process is used to extract the essential oils from

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Back of plant

Seeds of plant

Leaves of plant

Flowers of plant

The correct order of acid strength is.

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HIO4 > HBrO4 > HCIO4

HCIO4> HBrO4 > HIO4

HBrO4 > HIO4 > HCIO4

HBrO4 > HCIO4 > HIO4

Potassium sulphate with 48% to 52% potash, is made from.

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Potassium phosphate

Potassium Chloride

Potassium Nitrate

None of these

Which of the following interaction is the strong.

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Dipole -dipole

Ion induced dipole

Ion -dipole

Dipole induced diple

The electrolysis of molten metal hydride will produce dihydrogen gas.

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At cathode

At anode

At both the electrodes

At none of the electrodes

Galvanized steel are steel products coated with

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Carbon

Sulphur

Zinc

Iron

The efficiency of a reversible heat engine depends only on the

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Temperature of the heat sink

Temperature of the heat source

Temperature of the heat source and sink

Pressure of the fluid

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

Which of the following process is not sorbent separation technolgy.

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Penex

Parex

Molex

Olex

The overall energy change during the Cannot cycle to.

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Equal to zero

Equal to Q

Equal to W

Maximum

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