Question # 1

The order of reactivity of an alkyl halide (R-X) for a particular alkyl group is

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Iodide > bromide > chloride

Chloride > bromide > iodide

Bromide > chloride > iodide

Bromide > iodide > chloride

Which one of the following is not a nucleophile

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H₂O

H₂S

BF₃

NH₃

Estimation of Na in sea water is an example of :

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Numerical analysis.

Qualitative analysis.

Quantitative analysis.

None of above.

Acetic anhydride is obtained form acetyl chloride by the reaction of

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P₂O₅

H₂SO₄

CH₃COONa

CH₃COCH₃

Negatively charged particle nature of cathode rays was first demonstrated in 1895 by:

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Millikan.

J. Perrin.

Hittrof

J.J. Thomson.

The structure of white phosphorus is

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Square planar

Pyramidal

Tetrahedral

Trigonal planer

Coordination sphere may be:

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Cationic

Anionic

Neutral

All above

Which of the followings is not a nulceophile

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OH^-

NH₃

C₂H₅O^-

Br₂

In zero order reaction, the rate is independent of :

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Temperature of reaction

Concentration ofreactants

Concentration of products

None of these.

When a metal is dipped in 1 molar of its solution at 298 K. then potential set up is called

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Standard electrode potential

Electric charge

Ionization potential

Electroplating

The major components of coal gas are

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Hydrogen and methane

Ethane and carbon monoxide

Nitrogen and ethane

Ethane and carbon dioxide

Compounds having same molecular formula but different structures are said to be

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Monomers

Isomers

Metamers

Tautomers

Sodium thisoulophate is used in photography because of its

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Oxidizing behaviour

Reducing behaviour

Complexing behaviour

Photochemical behaviour

In a reversible chemical reaction having two reactants in equilibrium, if the concentration of the reactants are doubled then the equilibrium constant will

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Also be doubled

Be halved

Becomes one fourth

Remains the same

The two half cells of a galvanic cell are connected by

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Ammeter

Salt bridge

Hydrogen electrode

Copper electrode

______ reacts with alkalis to give hydrogen

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Be

Mg

Ca

None

Metallic conduction is due to the

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Movement of electrons

Movement of ions

Both a and b

None of these

Lead accumulator contains

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30% NaCI solution as electrolyte

30% HCI solution as electrolyte

30% H₂SO₄solution as electrolyte

30% NaOH solution as electrolyte

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Condensation

Dehydration

Dehydrogenation

Hydrogenation

Identification of a substance, determination of its structure and quantitative analysis of its composition are the aspects covered by

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Modern analytical physics

Mechanical chemistry

Biochemistry

Modern analytical chemistry

A state function of the system which describes together the internal energy and the work done is called

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Enthaply

Internal energy

Work

Free energy

Which of the following is a colligative property?

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Melting point

Osmotic pressure

Freezing point

Sublimation temperature

Which of the following species is paramagnetic?

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CO₂

NO

O^2-

CN

Which of the following has ester linkage?

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Nylon

Bakelite

Terylene

PVC

Elements in the same family have

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Same atomic number

Molecular wt same

Same chemical properties

Same electronic configuration

On heating acetaldehyde with ammonical silver nitrate solution, we get

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CH₃OH

Silver acetate

HCHO

Silver mirror

In which of the following theories the hybridizationis considered

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Vsepr

Lewis

Molecule orbital

Valence bond

The oxides of which of the following elements will be acidic in character

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Mg

Rb

Li

Cl

The electronic configuration of an atom/ion can be defined by the following

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Aufbau principle

Pauli's exclusion principle

Hund's Rule

All the above

Phosphorus pentoxide finds use as

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An oxidizing agent

A reducing agent

A bleaching agent

A dehydrating agent

Soft drinks and baby feeding bottles are generally made up of

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Polyester

Polyurethane

Polyurea

Polystyrene

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