Question # 1

Second order of protein structure refers to

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Number and sequence of amino acids

Three dimensional structure of protein

Proteins formed of more than one monomer

Bending of protein molecule

Lonic solids are characterized by:

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low melting points

_{good conductivety in solid state}

high vapour pressures

solubility in polar solvents

The scale of temperature that shows the freezing point of water at 0° is called

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Fahrenheit

Kelvin

absolute

Celsius

The weight of 11.2 liters of CO₂ at S.T.P would be

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88 g

44 g

32 g

22 g

Molar mass of formic acid in benzene comes out to be

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64

46

32

92

Chlorination of water is effective for

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Killing pathogens

Removing dust

Removing hardness

Increasing oxygen content

If 1 mole of an ideal gas is heated from 273.15 K to 283.15 K at 1 atmospheric pressure, then increase in its energy is

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0.082 atm.dm³

0.821 atm.dm³

8.21 atm.dm³

40.6 kJ

In which of the following processes are small organic molecules made into macromolecules

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The cracking of petroleum fractions

The fractional distillation of crude oil

The polymerization of ethene

The hydrolysis of protein

The kinetic energy of 4 moles of nitrogen gas at 127°C is? cals.(R = 2 cal mol^-1 K^-1)

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4400

3200

4800

1524

Benedict solution gives a positive test with but catalyze the same reaction:

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fructose

glucose

starch

sucrose

For reaction of methane and chlorine light is not available then

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Reaction will take place rapidly

No Reaction take place

Reaction occurs at double the rate

May all cases occur

Number of elements in the first period of the periodic table are

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Two

Four

One

Eight

Which of the following is not a fatty acid?

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Propanoic acid

Acetic acid

Phthalic acid

Butanoic acid

Solvent extraction method is a particularly useful technique of separation when the product to be separated is:

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non-volatile or thermally unstable.

volatile or thermally stable.

non-volatile or thermally stable.

volatile or thermally unstable.

When a nitrogeneous base combine with a sugar it is called

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Ribose

Nucleotides

Nucleoside

None

BOD is the oxygen demand with in days(s):

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Four

Two

Three

Five

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Which of the following compound is obtained on passing ethanol vapours on heated Al₂O₃?

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Ethylether

Acetone

Ethane

Ethanol

Gasoline is a mixture of hydrocarbons containing carbon atoms

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5 to 10

5 to 8

5 to 12

5 to 11

Which one of the following compounds does not have the empirical formula CH₂O?

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Ethanoic acid, CH₃CO₂H

Ethanol, CH₃CH₂OH

Glucose, C₆H₁₂O₆

Methanal, HCHO

The configuration 1s²2s²2p⁵3s¹shows

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Excited state of O₂

Excited state of neon

Excited state of fluorine

Ground state of fluorine atom

In ter-butyl alcohol, the tertiary carbon is bonded to

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Two hydrogen atoms

Three hydrogen atoms

One hydrogen atoms

No hydrogen atom

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