Question # 1

Photochemical smog contains----as main reactants

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Nitrous oxide & unburnt hydrocarbons

NO & brunt hydrocarbons

Nitric oxide & unburnt hydrocarbons

N2O & burnt hydrocarbons

Nitrogen percentage in atmosphere is:

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76%

77%

78%

79%

lonic bond is produced after complete transfer of

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nucleus

neutrons

electrons

protons

The primary building blocks of lipids are

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Fatty acid

Glycerol

Sterols

All

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

The polymers which can not be re-softened again and again are called

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Thermoplastic

Thermosetting

Both a and b

None

An example of simple protein is

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lipoprotein

Cholesterol

lecithin

globulin

Which is the following is true about galvanic cell:

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Reduction occurs at cathode

Reduction occurs at anode

Anode is negatively charged

Chathode is positively charged

For incineration temperature range is (in ^oC)

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700-800

800-900

900-1000

1000-1100

Substances that tend to decrease the activity of enzymes are called

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coenzyme

activators

inhibitors

apoenzyme

The value of R in term of dm³torr k^-1mol^-1

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62400

62.4

8.313

0.0821

Hydrolysis of ethyl-acetate (ester) has order of reaction :

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3

2

1

How much of NaOH is required to neutralize 1500 cm³of 0.1 N HCl?

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60 g

6 g

4 g

40 g

Catalytic oxidation of alkanes is used for the preparation of

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Adehydes

Fatty acid

Carbonyylic acids

Ketones

Hydrocarbons are organic compounds which contain elements such as

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Hydrogen

Carbon

Hydrogen and carbon

Halogens

The sample being analyzed is called:

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Electrolyte

Residue

Undue

Filtrate

The reaction rate is expressed in the units of

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mol dm^-3S^-

mol dm^-3

mol dm^-3N^-

dm^-3S^-

Which of the following represents elements in order of increasing atomic size?

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I, Br, Cl

Na, Mg, C

C, N, O

Li, Na, K

Proteins and amino acid can be separated by:

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Filtration

^Sublimation

Chromatography

Suction

Which property is not present in lipids?

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Liquid

Solid or semi solid

Soluble in water

Form emultion

In sp²type hybridization the three equivalent sp²orbitals lie in the same plane and at angle of

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0°

60°

120°

180°

For a given process, the heat changes at constant pressure (q_p) and at constant volume (q_v) are related to each other as

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q_p= q_v

q_p< q_v

q_p= qv/2

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