Question # 1

Which of the following alcohol is more soluble in H2O

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Propanol

Butanol

Pentanol

Hexanol

Ethene is produced from ethyl chloride by reacting with alcoholic KOH. The process is called

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Hydrogenation

Dehydrogenation

Dehydrohalogenation

Oxidation

A complete food contains at least:

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three nutrients

ten nutrients

six nutrients

eight nutrients

Potable water is considered to be:

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safe for human consumption

the ground water

the Surface water

now water is due to the salt of:

The branch of chemistry interlinked with biology, physics, medicines, agriculture, public health and sanitary engineering etc. is:

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Biochemistry

Physical chemistry

Pharmaceutical chemistry

Environmental chemistry

Catalyst used for ammonia synthesis is

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Cu

Co

Zn

Fe

Rte of evaporation of petrol is greater than that of water at room temperature. This is due to the reason that:

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petrol is an organic compound

water molecules have small size

petrol molecules do not have

petrol molecules have greater size

Monosacharide belongs to the groups:

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fats

carbohydrates

lipids

proteins

The highest temperature at which a substance can exist as a liquid is called its:

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Critical temperature

Zero temperature

Absolute temperature

None of above

The pH of neutral water is 6.8 then the temperature of H2O is

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25°C

More than 25°C

less than 25 C°

Not predicted

The rate of E1 reaction depends upon

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The concentration of substrate

The concentration of substrate as well as nucleophile

The concentration Nucleophilic

Nature of Catalyst

N₂ + O₂ ⇌2NO

The unit of K_c for tis reaction will be:

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No unit

mol^-2 dm^-3

mol^-1 dm^-3

mol^-2 dm⁺³

Which of the following equations represents the action of heat on NaHCO₃

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Product of concentration of ions raised to the power equal to the co-efficient of ions in balanced equation for saturated solution of a salt is called

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Ionic product

Equilibrium constant K_c

K_w

Solubility product (K_sp)

Which is in differnet phase form other metals

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Ni

Hg

Cd

Na

Substituted phenyl groups are called

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acyl groups

phenyl groups

Aryl groups

Alkyle groups

Hydrogen chloride molecule contains

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Covalent bond

Double bond

Co-ordinate bond

Electrovalent bond

In the manufacture of iron from haematitie,limestone is added to act as

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Flux

A reducing agent

Slag

An oxidizing agent

For which system does the equilibrium constant, KC has units of concentration

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Which of the following is a thermosetting plastic

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PVC

Polyethylene

Polystyrene

Melamines

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Forward

Backward

Already in equilibrium

K_cis never less

An oil or fat with no double bond have iodine number:

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Zero

100%

50%

minimum

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