Question # 1

Alkyl halides react with Mg in dry ether to form

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Magnesium halide

Grignard's reagent

Alkene

Alkyne

The number of atoms present in molecule determines its:

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Molecularity

Atomicity

Basicity

Acidity

A fibre which is made from acrylonitrile as monomer

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PVC

Rayon fibre

Acrylic fibre

Polyester fibre

The bond order of individual C - C bond is benzene is

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One

Two

Between one and two

One and two alternately

Ifk_cof a reaction productis verylarge, it indicates that equilibrium occurs :

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With the help of a catalyst.

With no forward reaction.

At a low product concentration.

At a high product concentration.

A nuclophile must

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Be an atom

A group of atoms

Have a lone pair

Be negatively charged

The colour of a transition metal complex is due to d-d transition The colour of the complex is the complementary of the colour absorbed. Thus [Ti(H₂O₆]³⁺abosrbs yellow light and transmits blue and red colours therefore the solution of titanium complex appears

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Blue

Red

Yellow

Mixture of blue and red or violet

Activity of the enzyme is reduced by

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Temperature

Concentration

pH

Inhibitors

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Rate is independent of concentration of water since it is in excess

Rate is independent of concentration of ester since it is in exces

Rate depends upon the concentration of acid catalyst added

Rate = k[CH₃COOC₂H₅]^1/2[H₂O]^1/2

The test used for the detection of ethanol in the mouth of a drunk driver is that the drunk driver is asked to blow air from mouth into a solution of K₂Cr₂O₇and H₂SO₄. The colour changes, if the driver is drunk

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From orange to green

From pink to green

From orange to colorless

From pink to colorless

The filtration process is used to separate solid from

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Liquid

Gas

Solid

All of above

Each of the following is true of white and red phosphours except that they

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Are both soluble in CS₂

Can be oxidized by heating in air

Consist of the same kind of atoms

Can be converted into one another

Terylen fibre is made by reaction of terephthalic acid with

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Ethylene

Ethylene glycol

Glycol

Terylene

Cotton is an example of

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Animal fibre

Mineral fibre

Vegetable fibre

Synthetic fibre

The method used only for the production of symmetrical alkanes

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Kolb's method

Clemmenen

Cannizzaro

Wolf kishner

Which of the following is not an example of addition polymer?

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Polyethene

Polystyrene

Neoprene

Terylene

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-1.10 V

+1.10 V

-0.42 V

+0.42 V

Phenols are derivative of:

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Alkanes

Alkenes

Alkynes

Benzene

Ricket is caused due to the deficiency of vitamin

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A

D

B

E

Benzene has a -------- structure

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Pentagonal

Hexagonal

Heptagonal

Tetragonal

The solubility of KCIO₃salt in water is decreased by adding

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NaCIO₃

NaCI

KCIO₄

KCI

Variable valency is generally exhibited by

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Normal elements

Transition elements

Metallic elements

None of these

A current of 9.65 ampere flowing for 10 minutes deposits 3.0 g of the metal which is monovalent. The atomic mass of the metal is

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10

50

30

96.5

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[A] = [B]

[A] < [B]

[B] = [C]

[A] > [B]

Which compound was recognized the parent member of aromatic compounds

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Aniline

Phenol

Benzene

Toluene

To differentiate isomers we use

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n-

iso-

neo

All of them

The element with atomic number 26 will be found in group

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2

8

6

10

Amylacetate flavour is present in:

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Banana

Apple

Jasmine

Orange

In the modern periodic table the elements are placed in the ascending order of their

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Atomic masses

Melting points

Boiling points

Atomic numbers

Which of the following compounds on boiling with KMnO₄(alk) and subsequent acidification will not give benzoic acid?

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Benzyl alcohol

Acetophenone

Anisole

Toluene

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