Question # 1

The structure of ICI₂is

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Trigonal

Trigonal bipyramidal

Octahedral

Square planar

The rate constant k of a reaction activation energy Ea and temperature are related by Arrhenius in the form of an equation which is

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Which is the derived lipid?

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Common fats

Vitamin-D

Common oils

Spinolipids

For which one of the following pairs of compounds can the members be distinguished by means of Tollen's test

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HCHO and CH₃CHO

CH₃CHO and CH₃COCH

CH₃COCH₃and C₆H₅COCH₃

CH₃COOH and CH₃COOCH₃

When a bond breaks

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Heat is evolved

Heat is absorbs

No change in heat contents takes place

Temperature increases

Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water

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SO₂

NO₂

CO

A and b only

The number of elements in the first, second and third period are

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2, 8, 18

8, 2, 18

2, 18, 8

2, 8, 8

Primary alcohols and aldehydes are oxidized to corresponding:

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alkanes

alkenes

Alkynes

Carboxylic Acid

Wholer prepared urea from

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Ammonia

NH₄CNO

NH₃

Uric acid

3.01 x 10²²Ag⁺ions is present in

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85 grams AgNO₃

0.85 g AgNO₃

8.5 g AgNO₃

18.5 g AgNO₃

Which is not a fossil fuel

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Petroleum

Coal

Natural gas

None of them

Acetaldehyde is used to make

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Rubbber

Antiseptics

Phenolic resin

All of these

Iodine value of an oil or fat may be defined as

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The number of grams of iodine taken up by 1 g of the oil or fat

The number of grams of iodine taken by 10 g of the oil or fat

The number of grams of iodine taken by 100 g of the oil or fat

None of the above

Which of the following derivative cannot be prepared directly from acetic acid?

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Acetamide

Acetyl chloride

Ethyl acetate

Acetic acid

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Cu

H

N

O

To determine the rate of reaction chemically a graphical method is applied. A graph is plotted between the amount or reactant decomposed or product formed against the time. The rate d_x/d_tat any time is equal to

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k

Tangentθ

1/a, a is initial conc.

1/a²

Which of the following (1 M) conducts more electricity?

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Sulphuric acid

Boric acid

Nitric acid

Phosphorus acid

S_N1 reaction of alkylhalides leads to

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Retention of configuration

Recemisation

Inversion of configuration

None of these

In azeotropic mixture showing negative deviation form Raoult's law show

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Higher b.p. than either

Lower b.p. than either

No change in b.p.

None of these

Which of the following elements have the largest radius

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F

Cl

Br

l

Purification of an impure copper is made by electrolytic cell, in which impure copper is anode and pure copper is cathode, and the electrolyte used is

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H₂SO₄

CuSO₄

ZnSO₄

Na₂SO₄

Which is the longest period of the periodic table

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5th

7th

6th

2nd

N₂and O₂are present in air but they don't react chemically at ordinary conditions of temperature and pressure because it is a

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Spontaneous reaction

Reversible reaction

Exothermic reaction

Non-spontaneous reaction

Which oxide of nitrogen is obtained on heating ammonium nitrate at 250° C?

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Nitric oxide

Nitrous oxide

Nitrogen dioxide

Dinitrogen tetraoxide

Azimuthal quantum number of last electron of ₁₁Na is

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1

2

3

0

In which type of following solutions the total volume of solutions may not be necessarily equal to sum of volumes of solute and solvent ?

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Percentage volume/volume

Percentage volume/weight

Percentage weight/volume

Percentage weight/weight

The reaction of an alkyl halide with RCOOAg produces

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Ester

Ether

Aldehyde

Ketone

Acetic acid is 1.33% ionized, In 1000 molecules of 0.1 M acetic acid the number of H⁺ions is

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1.33

13.3

1.33

1

Which of the following method is most appropriate for the manufacture of methane?

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By reduction of CH2CL2

Wurtz reaction

Liquification of natural gas

None of these

All the elements belongs to the 2nd period are

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Normal elements

Transition elements

Stable elements

Halogens

Which of the following is not a colligative property?

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Depression in freezing point

Elevation of boiling point

Osmotic pressure

Modification of refractive index

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