Question # 1

Palmitic acid & steanic acid are obtained from process of fats & oils:

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Reducing

Neutralization

Oxidation

Hydrolysis

One atmosphere is equal ___________ Pascal

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760

101325

14.7

1.01325

Poisoning of CO can be reveresed by giving oxygen at pressure:

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low

least

medium

High

UV rays inactivate enzymes because they

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change sequence of amino acids of enzymes

They add prosthetic group to them

They increase their specificity

affect structure of enzymes

Polycyclic aromatic hydrocarbons are taught to be

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Disinfectant

Carcinogenic

Helpful

Reactive

The process of effusion is best understood by law

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Grahams

Boyle s

Charles s

Avogadro s

99.5% mass of lithosphere is made of

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03 elements

8 elements

11 elements

15 elements

In the atosphere, CO₂is about

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0.01%

0.03%

0.05%

0.09%

The elements like calcium nitrogen and phosphorus added into the soil in large amounts are called:

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basic elements

trace elements

additives

nutrient element

How is the secondary structure of protein stabilized

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Through hydrogen bonding

Through ionic bonding

Through van der wall forces

Through covalent bonding

Molar mass of formic acid in benzene comes out to be

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64

46

32

92

Quantum number values for 2p orbitals are

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n = 2, l = 1

n = 1, l = 2

n = 1, l = 0

n = 2, l = 0

Isotonic solutions have same

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Molar concentration

Molality

Normality

None of these

Ethanol can be converted into ethanoic acid by

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Hydrogenation

Hydration

oxidation

Frmentation

Lithium reacts with air to form

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Peroxide

Normal oxide

Superoxide

None of these

The molarity of solution containing 14.5 grams urea (N₂H₄CO) dissolved in 100 cm³of the solution is

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1 molar

0.1 molar

0.2 molar

0.25 molar

Which of the following is a colligative property?

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Melting point

Osmotic pressure

Freezing point

Sublimation temperature

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Homogeneous

Heterogeneous

Isogeneous

None

When quantity of electricity passed is one faraday then the mass deposited at the electrode is equal to

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One gm, atomic weight

One gm, Equivalent

Eletrochemical equivalent

None of the above

strength of an acid can be determined by

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P^ka

P^kp

P^oH

P^kw

A fat or oil is characterised for extent of unsaturation by one of the following number, which one

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Rancidity number

Acid number

Iodine number

Saponicfication number

In an exothermic reaction, a 10° rise in temperature will

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Decrease the value of equilibrium constant

Double the value of K_c

Not produce any change in K_c

Produce some increase in K_c

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