Question # 1

At 25°C, the highest osmotic pressure is exhibited by 0.1 M solution of

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CaCl₂

KCl

Glucose

Urea

Osmotic pressure of a solution increases by

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Decreasing the temperature

Increasing the volume

Increasing the number of molecules of the solute

None of the above

When acetamide reacts with Br₂and caustic soda, then we get

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Acetic acid

Bromoacetic acid

Methyl amine

Ethylamine

Which of the following does not react with phenyl hydrazine?

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Ethanol

Ethanal

Acetone

Acetophenone

In which type of following solutions we don't know the total volume of the solutions :

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Percentage weight/weight

Percentage weight/volume

Percentage volume/volume

Percentage volume/weight

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Adding 2(ii) + 3(iii) and subtracting i

Add i + ii + iii

Add i - ii + iii

Add i - ii - iii

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Electronphilic substitution

Electrophilic addition

Free radical substitution

Nuclephilic substitution

Acetone is oxidized with

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Tollen's reagent

Fehling solution

Acidic dichromate solution

Benedicts solution

Coupling of Pb with its Pb⁺⁺/Pb = -0.13 V and Ag with Ag⁺/ Ag = +0.80 V, the cell reaction

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A carboxylic acid containing Ar group in it is called:

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Aromatic carboxylic acid

Allphatic carboxylic acid

Dicarboxylic acid

Carboxylic acid

Alcohols reacts with Grignard reagent to form

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Alkanes

Alkenes

Alkynes

All

The destructive distillation of coal gives three products. What is not the product of destructive distillation of coal

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Coal gas

Carbon dioxide

Coal tar

Coke

The number of unpaired electrons in Mn²⁺is

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5

4

3

2

Sodium is never found free in nature because of its

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Chemical reactivity

Small ionic size

Small atomic volume

None of these

Which one of the following substance is no used as drying agent in desiccators

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Silica gel

CaCl₂

Phosphorous

NaCL(50%)

Wohler synthesized first of all the organic compound:

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Carbohydrates

Urea

Aniline

Toluene

Which one is primary alcohol?

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Buten-2-ol

Propan-2-ol

Butaon-1-ol

2,3-Dimethylhexane-4-ol

Which of the following molecules has zero dipole moment>

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NH₃

CHCl₃

H₂O

BF₃

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3

4

5

2

The reaction of alcohol with SOCI₂in the presence of pyridine as catalyst gives

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Acids

Acid chloride

Alkyl halide

Benzene

The most reactive compound for electrophilic nitration will be

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Benzyl chloride

Benzoic acid

Nitrobenzene

Chlorobenzene

Which of the following is a polar molecules

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Carbon dioxide

Carbon tetrachloride

Methanol

Ethane

A buffer of a 0.09 molar acetic acid and 0.11 molar sodium acetate has pH = 4.83. If 0.01 mole NaOH in 1 dm³of the buffer solution is added, then pH of the buffer becomes

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4.74

4.92

5.0

4.0

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84.84 %

89.89%

81.81%

90.90%

The quantum number which determines the shape of the orbital is

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principal

azimuthal

magnetic

spin

An oxidixing agent

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K₂Cr₂O₇

H₂SO₄

FeSO₄

K₂SO₄

In a solution of CuSO₄how much time will be required to precipitate 2g copper by 0.5 ampere current?

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12157.48 sec

102 sec

510 sec

642 sec

The essential component of organic compound is

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O

C

P

N

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

How many alcohol (including both structural isomers and stereoisomers) can have the molecular formula C₄H₁₀O

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3

4

5

6

Which is used to identify Cu²⁺ions

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Nitric acid

Sulfuric acid

NaOH

HCI

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