Question # 1

Monosacharide belong to the group

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Fats

Carbohydrates

Lipids

Proteins

Under what conditions do real gases show close to ideal gas behavior?

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low pressure, low temperature

high pressure, low temperature

low pressure, high temperature

high pressure, high temperature

The specifie substance (metabolite) that fits on the enzyme surface and is converted to products is called

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Co-factor

Isoenzyme

Prosthetic group

Substrate

A pollutant affects

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Human affects

Quality of life

Functioning of ecosystem

All of these

A fat or oil is characterised for extent of unsaturation by one of the following number,which one

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rancidity number

acid number

iodine number

saponicfication number

Kerosene is liquid at room temperature.This is due to:

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organic nature

H-bonding

molecular size

dipole-dipole forces

Which of the following is precursor of T3 and T4

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Gaba

Dopa

B-Alanine

Di-iodotyrosine

Polysaccharides are

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Polyester

Polyamides

Poly ethers

Polynucleotide

The fibre which is made from vinylidine chloride polymer is called

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rayon fibre

azlon fibre

acetate fibre

all of the above

SO2 and NO2 cause pollution due to increase in:

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buffer action

basicity

acidity

neutrality

Which of the following gives positive haloform test and positive Fehling solution

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Acetone

Echanol

Acetaldehyde

Formaldehyde

Identification of a substance, determination of its structure an quantitative analysis of its composition are the aspects covered by:

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Modern analytical physics.

Mechanical chemistry.

Biochemistry.

Modern analytical chemistry.

Which compound has the maximum repulsion with water?

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C₆H₆

C₂H₅OH

CH₃CH₂CH₂OH

CH₃----O---CH₃

Rusting of iron is catalysed by

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Fe

O₂

Zn

H⁺

What is the formula of asbestos?

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CaMg₃(SiO₃)₄

CaSiO₃

Na₂SiO₃

Mg₃H₂(SiO₃)₄

Industrial alcohol may be denaturated by the addition of

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Methyl alcohol

Acetone

Pyridine

Any of the above reagent

Activation energy is the difference of energy between the energy of the reactant and

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The product

The activated complex

Both a and b

None of these

The organic compound, alcohols are much closer to, in structure and hence is also called its derivative:

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Water

Oxidizes of lithium oxides

Oxidizes of magnesium

Oxidizes of aluminium

Which of the followingα-Amino acids has basic R-group

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Proline

Glutamic acid

Histidine

Valine

When 6d orbital is complete, the entering electron goes into:

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7f.

7s.

7p.

7d.

Industrial effuents have toxic synthetic organic compounds as well as heavy metals like

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Pb

Cr

Hg

All of these

Which one is a nitrogen fertilizer

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Urea

Calcium sulphate

Potassium phospahte

Magnesium carbonate

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