Question # 1

What is the weight of 10 litres of CO₂at 27°C and 2 atm?

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89.3 g

36.1 g

125 g

127 g

In a crystal the atoms are locate at the position of:

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infinite potential energy

minimum potential energy

Zero potential energy

maximum potential

In which of these processes are smell organic molecules changed into macromolecules

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The fractional distillation of crude oil

The cracking of petroleum fraction

The hydrolysis of proteins

The polymerization

Coal contains sulphur in it:

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1-3%

1-6%

1-9%

1-12%

Ethyl and methyl groups are equidistant in a chain, the preference is given to?

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Ethyl

methyl

both ethyl and methyl

methyl mostly

SO₂produced by volcanoes is about

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75%

67%

69%

70%

Keeping in view the charge density select the compound amoung the following having highest lattic energy:

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LiBr

KCI

MgO

NaF

Liquids evaporate at every temperature. When the temperature becomes constant for a liquid, then:

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rate of evaporation is greater than the rate of condensation

the rate of condensation is greater than the rate of evaporation

The rate of condensation and evaporation become equal

it depends upon the nature of the liquid

If the volume term is present in denominator of Kc expression, then which one is correct

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Increase in pressure will shift the reaction backward

Increase in pressure will shift the reaction forward direction

Decrease in volume will shift the reaction forward direction

Reaction will not effected

The chemical reactivity of glass is reduced by the use of

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fluxes

formers

stabilizers

none of the above

CH₃CH₂COOH is also named as:

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Propionic acid

Propanoic acid

Acetic acid

Both (a) & (b)

Air pollution is not caused by

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Pollen grains

Hydroelectric power

Industries

Automobiles

I-Phenylethanol can be prepared by reaction of benzaldehyde with

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Methyl iodide an Magnesium

Methyl bromide

Methyl bromide and AIBr₃

C₂H₅l and Mg

A solution contains 1.2046 x 10²⁴hydrochloric acid molecules in one dm³of the solution. The strength of the solution is

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6 N

2 N

4 N

8 N

Carboxylic acids are reduced to in presence of NaAIH₄

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Esters

Acetyl chloride

alcohol

Aldehydes

Which of the following has highest oxidation potential

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Be

Li

Na

Ca

Identify the incorrect statement with respect to ozone

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Ozone is formed in the upper atmosphere by a photochemical reaction involving dioxygen

Ozone is more reactive than diaoxygen

Ozone is diamagnetic whereas dioxygen is paramagnetic

Ozone protects the earth's inhabitants by absorbing gamma-radiations

On adding sodium nitroprusside ketones give

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Red

Wine red

White

Orange

Rearrangement of an oxime to an amide in the presence of strong acid is called

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Curtius rearrangement

Fries rearrangement

Beckman rearrangement

Aldol condensation

The degree of polarity of molecule is known as its

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Dipole moment

Moment arm

Bond energy

Ionic character

CH₃CH₂COOH is also named as:

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Propionic acid

Propanoic acid

Acetic Acid

Both (a) and (b)

The addition of unsymmetrical reagent to an unsymmetrical alkene is in accordance with

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Hund's rule

Markownikov's rule

Pauli's Exclusion principle

Auf ban principle

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