Question # 1

[Co(NH₃)₆]³⁺will form ______ structure

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Square planar

Tetrahedral

Octahedral

Trigonal bipyamidal

The rate at which a substance reacts is directly proportional to its active mass and the rate of reaction is directly proportional to the product of the active masses of reacting substances, is called

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Law of conservation of energy

Le-Chateliers principle

Law of mass action

None of these

Which halide among the following is used as methylating agent?

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CH₃l

C₂H₅Cl

C₂H₅Br

C₆H₅Cl

In t-butyl alcohol, the tertiary carbon is bonded to:

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Two hydrogen atom

Three hydrogen atoms

One hydrogen atoms

No hydrogen atoms

Na reacts with phenol to produce

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H₂gas

Benzene

CO₂gas

CO gas

Aldehydes can be distinguished from ketones by using

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Schiff's reagent

Conc. H₂SO₄

Anhy. ZnCl₂

Resorcinol

Which one of the following substance is use as decolonizing agent

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Asbestos

Animal charcoal

conc, H₂SO₄

Silica gel

The amount of heat evolved or absorbed in a process in the same whether the process takes place in one or several steps is the statement of

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First law of thermodynamics

Hess's law

Coulomb's law

Phase law

Functional group of ketones is:

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---CHO

---CO---

---C≡ N

---COOH

Which of the following statement is not related to Solvay's process of Na₂CO₃

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Cheap materials

Pure product

Continuous process

Harmful by-products

In aldol condensation reaction, a double bond is formed between ______ and ______ carbon atoms

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αandβ

αandα

αand Y

None of these

Chief air pollutant which is likely to deplete ozone layer

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Sulphure dioxide

Carbon dioxide

Nitrogen oxides and chloro fluorocarbons

The alkyl halide molecule on which a nucleophile attacks is called

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Substrate

Subsituent

Substituted

All of these

Alcohol can be denaturated by adding:

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Acetone

Methanol

Pyridine

All

Energy can neither be created nor destroyed, although it can be transformed from one form to another. This is a statement of

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Law of conservation of matter

Law of definite proportions

Law of conservation of energy

None of these

Which one of the following is (m-xylene)

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1,2 dimethyl benzene

1,3 dimethyl benzene

1,5 dimethyl benzene

1,4 dimethyl benzene

Which of the following compounds on oxidation gives benzoic acid?

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Chlorophenol

Chlorotoluene

Chlorobenzene

Benzyl chloride

C₆H₁₂O₆and C₁₂H₂₂O₁₁ are:

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Mono-atomic molecules

Diatomic molecules

Poly-atomic molecules

Hetero atomic molecules

Rate of chemical reaction depends upon :

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The number of total collisions per second.

Number of molecules taking part in a chemical reaction.

Number of fruitful collisions per second

Number of fruitless collisions per second.

When hydrogen cyanide is added to an Aldehyde in the presence of ammonia it is called

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Strecker synthesis

Cory house synthesis

Williamson;s synthesis

None of these

Shape of CIO₃is

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Triangular pyramidal

Tetrahedral

Triangular planar

Triangular bipyramidal

Find the magnetic moment of a divalent ion in aqueous solution if its atomic number is 25

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3.0 BM

4.9 BM

5.9 BM

6.9 BM

The gasoline having octane No. 100 has ______

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More knocking

Less knocking

No knocking

Only knocking

In an experiment the concentration of a reactant 'A' is doubled the rate increases four times. If concentration in tripled, then rate increases nint times. Thus the rate is proportional to ______ of concentration of 'A'

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Square root

Square

Twice

Cube

The main structure features of proteins is

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An ester linkage

An ether linkage

The peptide linkage

All

The element which has a simple cubic lattice in solid state is

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Se

Te

Po

None of these

Of the following which is a step growth polymer

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Bakelite

Polyethylene

Teflon

PVC

Plastics are a pollution problem because many plastics

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Are made from petroleum

Are very inflammable

Burn to produce toxic fumes

Decompose to produce toxic products

When methane reacts with Cl₂in the presence of diffused light the products obtained are?

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Chloroform only

Carbon tetrachloride only

Chloromethane and dichloromethane

Mixture of a,b,c

The solubility product of AgCl is 2.0 x 10^-3 mol² dm^-6 , The maximum concentration of Ag ion in the solution is :

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2.0 x 10^-10 mol dm^-3

1.41 x 10^-10 mol dm^-3

1.0x 10^-10 mol dm^-3

4.0x 10^-10 mol dm^-3

In preparation medhod of carboxylic acids from alkyl halides always carboxylic acid formed which have carbon atoms:

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One less than in R----X

One more than in R---X

Equal to R---X

Double to R----X

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