Question # 1

The relationship between volume of a given amount of gas and prevailing conditions of temperature and pressure are:

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Charle's law

Graham's law

Boyle's law

Gas laws

Monosaccharides adn oligosacchardies are generally called as

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Crystal

Sugars

liquids

Non-sugars

The heat of reaction depends upon

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Temperature of the reactants

Physical states of the reactants and the products

Both A) and B)

Path of the reaction and the temperature

A molecule oilgosacharide on hydrolysis produces _____ molecules of monosacharide:

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1

2

4

6

choose the best example of diffusion of gases:

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vapour condensing on moist surface

spreading of small from a scent bottle

hot air rising above a candle

bubbling in soda bottle

Sudden expansion of gas molecule cause cooling because

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Expansion release some amount of energy

During expansion new force of attraction are developed and energy is released

During expansion force of attraction between closest molecules break and energy is used

Kinetic energy of gas molecules increases

The process in which solid is directly coverted into gaseous state is called

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evaporation

boiling

sublimation

transformation

One Pascal is equal to

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1 Nm^-2

1 Nm

1 Nm^-1

1 Nm²

A chemical inert and heat resistant plastic, that is made from tetrafluoroethylene, is called

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teflon

PVC

Bakelite

polyamide

The graph between P onγ-axis and 1/V at x-axis for a given mass of a gas at temperature T is a

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straight line

curved upward

curved downward

circular

If absolute temperature of a gas is doubled and the pressure is reduced to one half, the volume of the gas will:

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reduced to 1/4

be double

increases four times

remains unchanged

Catalytic oxidation of alkanes is used for the preparation of

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Adehydes

Fatty acid

Carbonyylic acids

Ketones

The prosthetic group in glycoprotein is

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Carbohydrate

Fat

Vitamin

Nucleic acid

Weakest acid among the followings is

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Acetic acid

Phenol

Water

Acetylene

K_bvalue of NH₄OH is 1.81 x 10^-5and its conjugate acid has K_a= 5.7 x 10^-10pKb of the base is 4.74, pKa of its conjugate acid is

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-4.74

4.74

10

9.26

Which is made by coordinate covalent bond

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H₃O⁺

H₂O

CH₄

HCl

The number of bonds in nitrogen molecule is

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Oneφ and one π

Oneφ and two π

three sigma only

Two φ and one π

pH of water is 7, if 0.01 M NaOH is added, than its pH is

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12

14

zero

10

Which behaves ass insulator for animals body?

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Carbohydrates

Protiens

Fats

skin

The overlapping of two partially filled atomic orbital is in such a way that the probability of finding the electron pair is maximum along the axis joining the two nuclei, the bond is

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Sigma bond

Pi bond

Ionic bond

Non-polar bond

Alcohols are derivatives of:

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Alkanes

Alkens

Alkynes

Benzene

Which inorganic precipitate acts as semipermeable membrane?

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Calcium sulphate

Barium oxalate

Nickel phosphate

Copper ferrocyanide

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