Question # 1

Hybridized in carbon is:

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sp

sp²

sp³

d²sp

Both E₁and E₂mechanism can be shown by

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1° - RX

2° - RX

3° - RX

None of these

Le-chatlier's principle is applied on the reversible reaction in order to

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Determine the rate of reaction

Predict the direction of reaction

Determine the extent of reaction

Find best conditions for favorable shifting the position of equilibrium

The cathodic reaction in the electrolysis of dill H₂SO₄with Pt electrodes

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Reduction

Oxidation

Both oxidation and reduction

neither oxidation or reduction

Reaction of Grignard's reagent with ketones gives: Reaction of Grignard's reagent with formaldehyde gives:

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Pri-alcohol

Sec-Alcohol

Ter-alcohol

Carboxylic

A solution consisting of 92 grams ethyl alcohol (C₂H₅OH) 96 grams methyl alcohol (CH₃OH) 90 grams water the mole fraction and mole percent of methyl alcohol is

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0.3. 30%

0.2, 30%

0.5, 30%

0.2, 20%

The bond angle depends upon the

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Types of bonds

Number of bonds

Non-bonding electron pairs

All of the above

Down's cell is used to prepare

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Sodium carbonate

Sodium bicarbonate

Sodium metal

Sodium hydroxide

Which of the following is the most suitable method for removing the traces of water from ethanol?

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Reacting with Na metal

Passing dry HCl through it

Distilling it

Reacting with Mg

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Low pressure

High pressure

High temperature

High concentration of SO₂

In Friedal-Craft's alkylation besides AlCl3 the other reactants are

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C6H6 + NH3

C6H6 + NH4

C6H6 + CH3Cl

C6H6 + CH3COCl

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Zero

1

2

1.5

The bond angle between hydrogen atoms and carbon in alkane is

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104.5°

107.5°

109.5°

120.5°

Atoms obey octet rule by sharing-electrons making covalent bonds according to

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Lewis and Kossal theory

Valance bond theory

VSEPR theory

Molecular orbital theory

The rate of reaction determined at a given time is called

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Average rate

Instantaneous rate

Specific rate

Overall rate

The main structure features of proteins is

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An ester linkage

An ether linkage

The peptide linkage

All

Alcohol fermentation is brought about by the action of

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CO₂

O₂

Invertase

Yeast

In the atmosphere, CO₂is about

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0.01%

0.03%

0.05%

0.09%

Which of the following order is incorrect w.r.t property indicated?

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Formic acid > Acetic acid > Propionic acid (ACID STRENGTH)

Cyclohexanol < Phenol < Benzoic acid ( ACID STRENGTH)

Benzamide < Aniline < Cyclohexylamine ( ACID STRENGTH)

FCH₂COOH > CICH₂COOH > BrCH₂COOH (ACID STRENGTH)

Orthophosphoric acid is

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Monobasic

Dibasic

Tribasic

Tetrabasic

Which element does not belong to 4d series

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Y

Zr

Mo

Zn

Write the name of following alkene CH₂= CH - CH = CH₂

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1,3 butadiene

Butra -1, 3-diene

Both a & b

None

C₂H₅OH can be differentiated from CH₃OH by

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Reaction with HCl

Reaction with NH₃

Iodoform test

Solubility in water

Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?

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Ozone

Nitrous oxide

Sulphure dioxide

Carbon monoxide

Which of the following is a colligative property?

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Melting point

Osmotic pressure

Freezing point

Sublimation temperature

One calorie is equal to

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5.184 J

3.184 J

4.184 J

7.184 J

The other name of cross linked polymers is

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Linear polymer

Branched polymer

Inter connected polymers

None of these

Which of the following synthetic fertilizer do not make soil acidic

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Urea

Thin urea

Ammonium phosphate

Potassium nitrate

Environmental pollution affects

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Biotic components

Plants only

Man only

Biotic and abiotic components of environment

NH₃, HCL, H₂O, HL are:

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Diatomic molecules

Poly-atomic molecules

Mono-atomic molecules

Hetero atomic molecules

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Condensation

Dehydration

Dehydrogenation

Hydrogenation

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