Question # 1

Which is possible in ethers?

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Reactivity high

Oxidation and reduction

Reactivity towards bases

Towards acids

The forced which holds together two or more atoms or ions to form a large variety of compounds in called:

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A chemical bond.

An ionic bond.

A covalent bond.

A coordinate bond.

The effective activity of a metal catalyst is increased if it is in

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Solid form

Liquid state

Gaseous state

Finely divided form

The high molecular weight materials which yield on hydrolysis the amino acids is called:

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Carbohydrates

Lipids

Fatty acids

Proteins

Polymerization of ethane take place at pressure of 100 atm and a temperature of

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200°C

400°C

600°C

800°C

The increase in size of the anion is due to:

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Increase in electron-electron repulsion

Increase in valence shell electrons.

Decrease in valence shell electrons.

Both (a) and (b).

Which of the following favours the reverse reaction in chemical equilibrium?

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Increasing the concentration of the reactant

Removal of the least one of the products at regular intervals

Increasing the concentration of one or more of the products

None of these

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Which decolourizes the colour of Br₃

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CH₄

CH_3-CH₃

CH_3-CH_3-CH₃

CH₂₌CH₂

The percentage by weight of NaCl, if 6.0 g of NaCl is dissolved in 120 g of water is

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10.5 %

5%

8.02%

11.5%

The formation of PVC from vinyl chloride is an example of

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Substitution reaction

Addition polymerization

Condensation polymerization

Condensation reaction

Solvent extraction is an unstable,Process and it is controlled by:

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Alcohol extraction

Petrol extraction

Phenol extraction

Ether extraction

A transition element is defined as an element of 3d series

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Which is metal

Which has one stable ion

Which has two stable ions

Which has at least one stable ion with incomplete d-orbital

Which property depends on the state of system

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Enthaply

Free energy

Entropy

All these

With the increase in size of halogen atom the reactivity of an alkyl halide

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Increases

Decreases

Remain constant

None of these

The self linking property of carbon is called as

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Linking polymerization

Addition

Catenation

Elimination

In the hydrolysis of CH₃COOC₂H₅the acid produced is

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Inhibitor

Catalyst

Auto catalyst

None of above

Which is made by coordinate covalent bond

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H₃O⁺

H₂O

CH₄

HCl

Which of the following compounds on oxidation gives benzoic acid?

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Chlorophenol

Chlorotoluene

Chlorobenzene

Benzyl chloride

In a group of periodic table, atomic radii is:

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Remains some.

Increases.

First decreases then increases.

Decreases.

Which of the following is a characteristic of a reversible reaction?

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It never proceeds to completion

It can be influenced by a catalyst

It proceeds only in the forward direction

Number of moles of reactants and products are equal

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

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Sulphuric acid

Boric acid

Nitric acid

Phosphorus acid

The relative abundance of the ions with a definite m/e value is measured by

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High pressure of vapours

Strength of electric current measured

Quantity of fast moving electrons

Electron gas

Among the following elements which one has the highest value of first ionization potential?

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Oxygen

Argon

Barium

Cesium

Acetamide is prepared by

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Heating ammonium acetate

Heating methyl cyanide

Heating ethyl acetate

The hydrolysis of methyl cyanide

The bond angles in methane CH₄are equal to

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109.5°

107.5°

104.5°

120°

Which of the following form normal oxide

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K

Li

Na

None

Acetamides are formed by the reaction of carboxylic acids with

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Acids

Bases

Salts

NH₃

Formation of a cation is:

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Exothermic process

Non-endothermic process

Endothermic process

None of above

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N₂O₄is limiting reactant

N₂H₄is the limiting reactant

Reactants are completely converted to the products

Reactions is reversible

Balmer's series is in ______ region

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Visible

U V

I. R.

None

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