Question # 1

The concentration of dissolved molecular oxygen in water which acts as the most important oxidizing agent ranges form:

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2ppm - 6ppm

2ppm - 4ppm

4ppm - 8ppm

2ppm - 3ppm

What is true for a molecule with standard geometry

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It lacks a Ip

It can't be a donor

It can be an acceptor

All

Contaminated soil can be cleaned by various methods. Which method is not used to clean the soil

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diffusion

convection

electrophoresis

chromatography

Splitting of spectral lines when atoms are subjected to strong electric field is called:

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Compton effect

Stark effect

Zeeman effect

Photoelectric effect

Fumaric acid converted into malic acid in the presence of

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Lyases

Glyceomutases

Fumarase

Hydrolases

The mass of 8.5 dm³of oxygen gas at 0.0821 atm and -1°C is

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100 g

10 g

1 g

0.1 g

The basic difference between synthetic and natural fertilizer is in their

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raw material

crop application

usage

shapes

In the equation PV = nRT which one cannot be numerically equal to R

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8.31 x 10⁷ erg⁷ K^-1 mol^-1

8.31 x 10⁷ dynes Cm K^-1 mol^-1

8.31 JK^-1 mol^-1

8.31 L atm K^-1 mol^-1

In diamond, the carbon atoms are arranged in a

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tetrahedral manner

hexagonal manner

square planar manner

octahedral manner

Example of basic essential amino acids

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Arginine

Histidine

Lysine

All of the above

In solid, the temperature is the measure of:

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Rotational kinetic energies.

Translational kinetic energies.

Vibrational kinetic energies.

None of above.

Amides on treatment with Br₂and KOH are converted into amines, the reaction is known as

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Hoffmann's bromamide reaction

Hoffmann's methylation

Gabriel phthalimide reaction

H.V.Z reaction

The most reactive compound for electrophilic nitration will be

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Benzyl chloride

Benzoic acid

Nitrobenzene

Chlorobenzene

The driving force for making a bond is

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To attain noble gas electronic configuration

To make soled compounds

To make different compounds

To make gaseous substances

Which statement about the following equilibrium in correct?

2SO_{2 (g)}+ O_2(g)---------------2sO_3(g)H= - 188.3 KJ mol-1

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T value of K_{p falls witha rise in temperate.}

The value of K_{p falls withincreasing pressure}

Adding V_2O₅catalyst increase the equilibrium yield of sulfur trioxide

The value of K_{p is equal to}K_p

Polymer formation from monomers starts by

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Condensation reaction between monomers

Coordination reaction between monomers

Conversion of monomer to monomer ions by protons

Hydrolysis of monomers

Which electronic configuration corresponds to an element of Group ||Z-A of the periodic table?

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1s, 2s², 2p⁶, 3s², 3p⁶, 4s²

1s², 2s², 2p⁶

1s², 2s², 2p⁶, 3s², 3p³

1s², 2s² , 2p⁶, 3s², 3p¹

A suitable solvent should dissolve maximum amount of solute at its boiling point and minimum amount at :

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Freezing point.

Room temperature.

Boiling point.

Sea level temperature.

What is not true about DNA

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It preserve genetic information

To relicates

Synthesized protein

It has a linear structure

Toluene is also called

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Hydroxyl benzene

Methyl benzene

ethyl benzene

None

Marsh gas was the name given to

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Methane

Ethane

Propane

Butane

Carboxylic acids functional group is:

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----COOH

-----COH

----CO---

----OH

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