Question # 1

If Kc value is small then equilibrium position will shift

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Towards left

Remains unchanged

Towards right

lt is always constant value

Steroid belong to the family of:

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protein

enzyme

lipids

carbohydrates

The number paper industries in Pakistan are:

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30

25

35

20

Smaller unit of biosphere is:

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specie

ecosystem

plankton

troposphere

Formation of PVC form vinyl chloride is an example of

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substitution reaction

addition polymerization

condensational reaction

Aldol condensation

Which noble gas is used in mixture used for breathing by divers?

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Ge

Ar

Kr

He

The most suitable temperature for preparing ammonia gas is

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250℃

450℃

350℃

550℃

Which of the following is an example of diffusion?

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Spreading of smell of flowers in garden

Steam condensing on a cold window

Bubbles rising in a beaker of boiling water

All of above

When the concentration of product is increased the instantaneous rate of reaction with reference to reactants will be

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Positive

Negative

the same

falling curve

A molecule that has polar bonds but is overall non - polar

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IF

CCl4

PCI3

All

An example of ion-dipole force is solution of

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NaCl in water

Glucose in water

Bromine in benzene

Ethanol in water

Which of the following is not a state function

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Pressure

Temperature

Enthalpy

Amount of substance

Geographical survey of Pakistan estimates about billion tons of coal in Pakistan:

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182

183

184

185

Which of the following does give violet colour with neutral ferric chloride?

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Acetic acid

Salicaylic acid

Formine acid

Benzoic acid

The valency, ionization energy and electrongativity of elements are related to its

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Atomic number

Properties

Atomic weight

Family group

The three dimensional folding and twisting of a polypeptide chain give rise to

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Primary structure

Secondary structure

Tertiary structure

All of these tertiary

The element caesium bears resemblance with

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Ca

Cr

Rubidium

None of the above

Which inorganic precipitate acts as semipermeable membrane?

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Calcium sulphate

Barium oxalate

Nickel phosphate

Copper ferrocyanide

Paraffins are also called

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Alkanes

Alkynes

Alkenes

None of these

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0

1

2

3

Which carbon is more electronegative?

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sp³- hybridized carbon

sp-hybridized carbon

sp²-hybridized carbon

always same irrespective of its hybrid state

Which of the following does not reflect the periodicity of elements?

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Bonding behaviour

Electronegativity

Ionisation potential

Neutral/proton ratio

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