Question # 1

Which one the following gases is ideal at -200°C?

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N₂

He

both

none

The partial pressure of CH₄and O₂are 500 torr and 100 torr repectively in a 10 dm³vessel at 0°C. The ratio of number of molecules of CH₄: O₂is

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1: 2

5 : 1

5 : 2

2 : 1

Term ozone hole is used for depletion of ozone during months of:

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Jan-Feb

March - Sep

Sep- Nov

Dec-Feb

The substances added in paints for improving the mechanical properties is called:

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pigmein

filter

stabilizer

binder

The volume of a gas that is occupied by its one mole at STP is called

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total volume

normal volume

molar volume

atomic volume

which chlorine compound has bonding that can be described as ionic with some convalent character?

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NaCI

MgCI₂

AICI₃

SiCI₄

To which of the following mixtures Dalton's law of partial pressures is not applicable?

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CO and CO₂

CO₂ and N₂

CH₄ and C₂H₆

HCI and NH₃

At constant temperature, volume of given mass of gas in inversely proportional to pressure on it. This statement is according to:

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Hook's law

Graham's law

Bolye's law

Charle's law

All of the following are hydroxy containing amino acids except

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Serine

Threonine

Valine

Tyrosine

Which one is not related with evaporation

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Continuous

Cooling

Exothermic

Spontaneous

Factors affecting quality of water:

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D.O

BOD

COD

a,b,c

The total number of transition elements is:

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10

14

40

50

Amiino acids are building blocks of:

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Protein

Carbohydrates

Lipids

Fats

Number of moles of the solute dissolved per dm³of the solution is knows as

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Molarity

Formality

%age

None of these

C₂H₅CHO and (CH₃)₂CO can be distunguished by testing with

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Phenyl hydrazine

Hydroxylamine

Fehling solution

Sodium bisulphate

Physical properties of alkanes increase with increase of all physical constants except

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Boiling points

Melting points

Density

Solubility

The detection of functional group is called:

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Numerical analysis

Qualitative analysis

Quantitative analysis

Combustion analysis

The total number of orbitals in a shell with principal quantum number 'n' is

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2n

2n²

n²

n + 1

Ethanol can be converted into ethanoic acid by

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Hydrogenation

Hydration

oxidation

Frmentation

The effective activity of a metal catalyst is increased if it is in

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Solid form

Liquid state

Gaseous state

Finely divided form

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0.073

0.147

0.05

0.026

Marsh gas was the name given to

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Methane

Ethane

Propane

Butane

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