Question # 1

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Acetamide is prepared by:

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Heating ammonium acetate

Heating methyl cyanide

Heating ethyl acetate

The hydrolysis of methyl cyanide

Substituted phenyl groups are called

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acyl groups

phenyl groups

Aryl groups

Alkyle groups

Which of the following elements have the largest radius

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F

Cl

Br

l

Which compound is both chiral and acidic

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The metal present in blood is

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Al

Hg

Cu

Fe

Given data

(i) heat of formation of CO₂is -393.7 KJ mole^-1

(ii) heat of formation of H₂O is -285.8 KH mole^-1

(iii) heat of combustion of CH_{4 is -890.00 KJ mole}^-1

Enthalpy of formation of methane from C and H₂is calculated by Hess's law by

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Adding i + ii + iii

Adding 2(i) and ii and subtracting iii

adding i + iii and subtracting ii

Adding i + 2(ii) and subtracting iii

The bond order for He₂molecule is

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zero

1/2

1

2

Oxidation of ter-alcohol gives:

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Aldehyde

Formaldehyde

Ketone

Alkens

NH₃, HCL, H₂O, HL are:

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Diatomic molecules

Poly-atomic molecules

Mono-atomic molecules

Hetero atomic molecules

Vinegar is dilute solution of:

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Acitic acid

Formic acid

Butyric acid

Propionic acid

Major food factors are:

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Fats and oils

Carbohydrates

Protiens

All of these

Which of the following is hypnotic?

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Acetaldehyde

Metaldehyde

Paraldehyde

None

During nitration of benzene, the active nitrating agent is

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NO3

NO2+

NO2-

HNO3

SN2 reaction can be best carried out with

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Primary alkyl halides

Secondary alkyl halides

Tertiary alkyl halides

All the three

The compound which gives oxygen on moderate heating is

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Zinc oxide

Mercuric oxide

Aluminium oxide

Ferric oxide

BOD is

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Biological oxygen deficit

Biosphere oxygen demand

Biological oxygen demand

None of the above

In alkynes the bonds between carbon atoms are

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All sigma bonds

All pi(π) bonds

One is sigma and two areπ(pi) bonds

One isπ(pi) and two are sigma bonds

The organic compounds which are derivative of hydrocarbons of oxygen are:

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Carbohydrates

Phenols

Alcohals

All of these

If Grignard reagent is allowed to react with another alkyl halide the main product is

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An alkane

Cyclo alkane

Alkyne

An alkene

X-ray work has shown that the diameters of atom are of the order of

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8 x 10^-10m

2 x 10^-10m

8 x 10^-8m

2 x 10^-8m

Which of the following has ester linkage?

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Nylon

Bakelite

Terylene

PVC

What element is not essential the growth of plants and is not required in the fertilizers

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Nitrogen

Potassium

Phosphorus

Barium

Number of isomers of butane are:

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One

Two

Three

Four

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With H₂/Ni CH₃(CH₂)₅CH₂OH

With H₂/Ni CH₃(CH₂)₅CH₃

With NaBH₄ CH₃(CH₂)₅CH₂OH

With NaBH₄ CH₃(CH₂)₅CHO

Teflon, styron and neoprene are all

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Copolymers

Condensation polymers

Homopolymers

Monomers

General formula of carbocyclic acids is:

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RCOH

RCOR

RCOOR

R-OH

In the presence of copper electrodes the electrolysis of aqueous CuSO₄produces at cathode

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H₂gas

O₂gas

SO₂gas

Cu metal

I a chemical reaction equilibrium is said to have been established when :

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Rate of opposing reactions are equal.

Rate constants of opposing reactions are equal.

Opposing reactions stop.

Concentration of reactants and products are equal

When acetamide reacts with Br₂and caustic soda, then we get

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Acetic acid

Bromoacetic acid

Methyl amine

Ethylamine

Enzymes are chemically

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Carbohydrates

Proteins

Fatty acids

Phospholipids

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