Question # 1

Which one of the following pair of atoms is most likely to form an inoic bond?

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Na and F

C and F

N and F

O and F

Energy required to remove electron from an atom

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Ionization potential

Electronegativity

Electropositivity

Electron affinity

Stronger the oxidizing agent, higher is

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Redox potential

Standard reduction potential

Reduction potential

_{Oxidation potemial}

.Both aldehydes and ketones are planar to the neighborhoods of carbonyl (C-0) group. Which one of the following bonds is distorted towards the oxygen atoms?

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pi-bond of C and O

Sigma bond of C and O

Sigma bond of C and H

Sigma bond of C and C

Which is an intermediate in SN1 reaction

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Ethoxide ion

Carbocation

alkyl halide

alkene

The pressure exerted by gas molecules is due to their

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collisions

densities

masses

kinetic energy

All of the following are non covalent except

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Hydrophobic interactions

Disulphide bond

Hydrogen bond

Electrostatic bond

Which of the following compounds does not exhibit positional isomerism?

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Alkynes

Nitroalkanes

Carboxylic acid

Alcohol

Chemicals used to kill pests are:

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Herbicides

Insecticides

Pesticides

fungicides

Vapour pressure is not affected by

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Surface area

Intermolecular forces

Temperature

Nature of liquid

Lysine

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Basic Only ketogenic

Ketogenic glucogenic

Acidic glucogenic

Non essential

The solid remained on filter paper during the filtration is called the :

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Substance.

Residue.

Undue.

Filtrate.

In Lucas test primary alcohol make as oily layer

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Immediately

In 10 mins

On heating

Not

When 6s orbital is complete then next electron goes to

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6p

6d

5d

4f

Factors affecting quality of water:

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D.O

BOD

COD

All of these

Which is used in navigational equipments?

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B

Be

Mg

Al

The heat energy change during a chemical reaction at constant pressure and at a given temperature is called

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Change in internal energy

Enthaply change

Temperature change

Work done by the system

Introduction of a second methyl group in methylbenzene will give how many isomeric dimethyllenzenes

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2

1

3

4

Which of the following compounds gives trichoromethane on distilling with bleaching power?

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Methanal

Phenol

Ethanol

methanol

The 95.5% mass of Lithosphone is made of 11 elements i.e. O₂, Si, Al, Fe, Ca, Na, K, Mg, Ti, H₂and P. which element is present in trace amount

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Iodine

Bromine

Lead

Carbon

Aldol condensation is actually

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Electrophilic addition of carbonation

Electrophilic addition of carbonium ion

Nucleophilic addition of carbonation

Nuclephilic addition of carbonium ion

The formation of PVC from vinyl chloride is an example of

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Substitution reaction

Addition polymerization

Condensation polymerization

Condensation reaction

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