Question # 1

Agriculture consumes part of fresh water:

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1%

2%

69%

23%

The primary building blocks of lipids are

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Fatty acid

Glycerol

Sterols

All

The temperature of the gas is raised from 27°C to 927°C the root mean square velocity is

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√927/27 times the earlier value

Same as before

Halved

Doubled

Polymers class is:

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homopolymer

copolymer

ter polymer

All of these

Amino acid α-hydroxy carboxylic acid and

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CO₂ gas

H₂ gas

N₂ gas

NH₃ gas

CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy?

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50000

20000

100000

10000

Hydrocarbons, SO₂, CO, NH₃nitrogen oxides and compounds of fluorine are called

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Primary pollutant

Secondary pollutant

Tertiary pollutant

None of these

Amount of ozone in atmosphere is expressed in units:

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Kilograms

cm

molarity

DU

Amino acids are building material of:

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lipids

protein

carbohydrates

fats

Water is made disinfectant during purification of water to the step:

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aeration

coagulation

chlorination

treatment

In which of these processes are small organic molecules made into macro-molecules?

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The cracking of petroleum fractions

The fractional distillation of crude oil

The polymerization of ethane

The hydrolysis of proteins

The rate equation for a reaction is Rate =k[A]. what are unit of K ?

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Mole-1 dm³ S^-1

Mole dm³ S^-1

Moledm³

S^-1

Benzene does not undergo polymerization and it is also resistant to

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Reduction

Oxidation

Alkylation

Ozonolysis

Group VA of the periodic table consists of the elements N, P, As, Sb and Bi, On passing from N to Bi, the oxides of the elements of general formula M₂O₃become

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Stronger reducing agents

More ionic

More basic

More volatile

Benzene is an example of

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Aromatic compound

Cyclic compound

Aliphatic compound

A cyclic compound

He Ar and Ne are:

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Mono-atomic molecules

Hetero atomic molecules

Poly-atomic molecules

Diatomic molecules

Which step is unnecessary for purification of water for drinking purposes

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Aeration

Coagulation

Treatment with chlorine

Treatment with iodine

Molar mass of high molecular w.f. polymers ranges form:

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1000 to 10000

10000 to 100000

100000 to 1000000

1000000 to 10000000

NaHCO₃is commonly called

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Soda ash

Baking soda

Washing soda

None of these

Reaction of acids with alcohols is also known as

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Esterification

Saponification

Alkalization

None

0.1 molar glucose (C₆H₁₂O₆) solution has the % W/N

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1.8%

18%

0.18%

2.8%

The amount of heat evolved or absorbed in a chemical reaction, when the molar quantities of products and reactants being the same as represented in chemical equation. is called

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Heat of reaction

Free energy of reaction

Entropy of reaction

None of these

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