Question # 1

According to MO Theory the species O⁺₂ possesses

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Bond order of 2.5

Three unpaired electrons

Diamagnetic character

Stability lower then O₂

Reaction of ethylamine with chloroform in alcoholic KOH producers

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CH₃OH

CH₃NC

C₂H₅NC

C₂H₅CN

Galena is an ore of

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Gallium

Lead

Tin

Germanium

The unit of rate constant for a zero order reaction is

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Liter sec^-1

Liter mol^-1sec^-1

Mol liter^-1sec^-1

Mol sec^-1

The disaccharide present in milk is

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Sucrose

Maltose

Lactose

Cellobiose

The equilibrium constant in a reversible chemical reaction at a given temperature

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Depends on the initial concentration of the reactants

Depends on the concentration of one of the products at equilibrium

Does not depend on the initial concentrations of recatants

Is not characteristic of the reaction

Which has largest first ionization energy?

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Li

Na

K

Rb

The main structure features of proteins is

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An ester linkage

An ether linkage

The peptide linkage

All

Magnesium keeps on burning in

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N₂

CO₂

N₂O

N₂ as well as CO₂

For preparing an alkane, a concentrated aqueous solution of sodium or potassium salt of saturated carboxylic acid is subjected to

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Hydrolysis

Oxidation

Hydrogenation

Electrolysus

Sodium thiosulfate is used in photography because of its

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Oxidizing behaviour

Reducing behaviour

Complexing behaviour

Photochemical behaviour

Hess's law deals with

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Changes in heat or reaction

Rate of reaction

Equilibrium constant

Influence of pressure on volume of a gas.

A cell constant is generally found by measuring the conductivity of aqueous solution of

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BaCl₂

KCl

NaCl

MgCl₂

Reaction of ethylamine with chloroform in alcoholic KOH produces

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CH₃OH

CH₃NC

C₂H₅NC

C₂H₅CN

Which is the most amphoteric?

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Na₂O

MgO

Al₂O₃

CaO

Addition of iron fillings to CuSO₄solution caused precipitation of Cu owing to the

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Reduction of Cu²⁺

Oxidation of Cu²⁺

Reduction of Fe

Reduction of Fe³⁺

Given below are some statements concerning formic acid, which of them is true?

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It is a weaker acid than acetic

it is a reducing agent

When its calcium salt is heated, it forms a ketone

It is an oxidizing agent

The movement of solvent molecules through a semipermeable membrane is called

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Electrolysis

Electrophoresis

Osmosis

Cataphoresis

Crystal can be classified in to -------------- basic crystal habits

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7

3

14

3

Which of the following fluorides does not exist?

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NF₅

PF₅

AsF₅

SbF₅

Aldehydes are produce in atmosphere by

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Oxidation of secondary alcohols

Reduction of alkenes

Reaction of oxygen atoms with hydrocarbons

Reaction of oxygen atoms with ozone.

Which of the following cannot be produced by acidic dehydration of alcohols?

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Ethers

Aldehyde

Alkyl Hydrogen sulphate

Alkene

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