Question # 1

Self condensation of acetaldehyde in the presence of dilute alkalies gives

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An acetal

An aldol

Mesitylene

Propionaldehyde

Result of ozone hole is

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Green house effect

Global warming

Acid rain

UV rays reach the earth

95% alcohol is called

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Rectified spirit

Spirit of wine

Spirit

Methylated

Ifk_cof a reaction productis verylarge, it indicates that equilibrium occurs :

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With the help of a catalyst.

With no forward reaction.

At a low product concentration.

At a high product concentration.

The classify the elements, Newland gave the idea of

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Octaves

Triads

Atomic volume

Atomic mass

Among the following the most reactive towards alcoholic KOH is

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CH₂= CHBr

CH₃COCH₂CH₂Br

CH₃CH₂Br

CH₃CH₂CH₂Br

The nitration of benzene takes place when it is heated with a mixture of conc.HNO₃and conc. H₂SO₄at 50°C in ratio of

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1 : 2

1 : 1

1 : 3

2 : 1

CH₃CH₂COOH is also named as:

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Propionic acid

Propanoic acid

Acetic Acid

Both (a) and (b)

The bond order of individual C - C bond is benzene is

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One

Two

Between one and two

One and two alternately

Isotonic solutions have same

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Molar concentration

Molality

Normality

None of these

Number of sigma bonds in P₄O₁₀is

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6

7

17

16

Acetaldehyde is used to make

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Rubbber

Antiseptics

Phenolic resin

All of these

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

The energy absorbed when an electron is added to a gaseous atom to form a gaseous ion is called

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Electron affinity

Ionization energy

Both of these

None of these

Ketons are prepared by the oxidation of

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Primary alcohol

Secondary alcohol

Tertiary alcohol

None of these

The total number of possible values of magnetic quantum number for the value of l=3 is

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3

1

5

7

The simplest and the parent members of aromatic hydrocarbon is

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Benzene

Toluene

Biphenyis

Naphthalene

Etherification is catalyzed by

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Acids

Gases

Salts

None of the these

Linear geometry is present in:

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Sp³

Sp²

Sp

D²sp³

Which of the following reagent cannot be used for preparing alkyl chloride from alcohol?

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HCl + anhyd. Zncl₂

NaCl

PCl₅

SOCl₂

In fructose the possible optical isomers are

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12

8

16

4

How many molecules of chlorine adds in benzene in the presence of sunlight

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One

Two

Three

Four

Ketones are reduced to

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Primary alcohol

Secondary alcohol

Tertiary alcohol

All of these

The sum of mole fractions (X) of components of solution is equal to

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100

200

One

Zero

Synthetic rubber is made by polymerization of

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Chloroform

Acetylene

Divinlacetylene

Butene

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What is formed when oxalic acid is dehydrated by conc. H₂SO₄?

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C + CO₂

CO

CO₂

CO + CO₂

The chloroform reacts with NaOH to give

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CH₃COONa

Sodium oxalate

CH₃OH

HCOONa

The detection of functional group is called

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Numerical analysis

Qualitative analysis

Combustion analysis

Quantitative analysis

The substance having highest conductivity at room temperature among the following is

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0.1 N HCl

0.1 N NaCl

Graphite

Glass

The temp. used for the hydrogenation of alkenes using Ni is

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2000°C

400°C

200-- 300°C

1000°C

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