Question # 1

Cholesterol is an important precursor in the biosynthesis of

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Adrenal hormones

Sex hormones

Vitamin-D

All of these

Protein are classified into

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Simple protein

Complex proteins

Derived proteins

All of these

Benzene cannot undergo the ------- directly

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Substitution reaction

Addition reaction

Oxidation reaction

Elimination reaction

In which of the following techniques rate of reaction is directly related with number ofions

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Spectrometry

Dilatometric method

Conductometric method

Refractometric method

Final product of hydrolysis of nitrile is

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Ketone

Alcohol

Aldehyde

Carboxylic acid

The deviation of a real gas from ideal behaviour is maximum at

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-10.0°C and 50 atm

-10°C and 2 atm

100°C and 2.0 atm

0°C and 2 atm

Which of the following is primary alkyl halide

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IsopropyI halide

Sec-butyl halide

Tert-buryi halide

Neo-pentyl halide

Nylon 6, 6 is a condensation polymer of

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Phthalic acid and hexa ethylene diamine

Adipic acid and hexaethylene diamine

Phthalic acid and glycerol

Adipic acid and glycerol

On ascending the electrochemical series strength as reducing agent

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Increases

Decreases

Remains same

not determinable

Which one of the following molecules show maximum hydrogen bonding?

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H₂O

H₂Se

H₂S

HF

Chloroform is carcinogenic:

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Heart

Lungs

Liver

Kidney

Planar geometry of molecules is due to

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sp³hybridization

sp²hybridization

sp hybridization

P - p overlap

Property of transition element is :

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Low m.p and b.p

Parramagnetism

Oxidation state

Low binding energies

The most acidic of the following compounds is

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P₂O₃

Sb₂O₃

B₂O₃

As₂O₃

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32

64

16

4

The reaction of alcohol with SOCI₂in the presence of pyridine as catalyst gives

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Acids

Acid chloride

Alkyl halide

Benzene

Law of mass action states that rate of chemical reaction is directly proportional to the product of active masses of the reactants. The term active mass means

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Mass in grams converted to products

Number of moles

Number of moles per dm³of reactants

Total pressures of the reactants

Which of the following elements does not show variable oxidation states?

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Copper

Iron

Zinc

Titanium

Which of the following is a nucleophile

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OH

CH(CH₃)₃

CH₃⁺

CH₃CH₂CH₃

Sulphonation of benzoic acid produces mainly

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o-Sulphobenzoic acid

m-sulohobenzoic acid

p-Sulphobenzoic acid

o-and p-Sulphobenzoic acid

The color of ppts formed by Fehling's test is

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Brick red

Red

Yellow

Orange

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Small change in concentration of product

Small time internal

Co-efficient of the reactant

Co-efficient of the product

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