Question # 1

Vegetables oils are

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Unsaturated fatty acids

Glycerides of unsaturated fatty acids

Glycerides of saturated fatty acids

Essential oils obtained from plants

Plaster of Paris is obtained from

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marble

bauxite

gypsum

limestone

Rte of evaporation of petrol is greater than that of water at room temperature. This is due to the reason that:

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petrol is an organic compound

water molecules have small size

petrol molecules do not have

petrol molecules have greater size

Amorphous substance show

(i) Short and long range order

(ii) Short range order

(iii) Long range order

(iv) Have no sharp melting point

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(i) and (ii) are correct

(ii) and (iv) are correct

(ii) (iii) and (iv) are correct

(i) and (iv) are correct

The enthalpy of formation of a compound is

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Positive

Either positive or negative

Negative

None

The reaction which is responsible for the production of electricity in the voltaic cell is

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Hydrolysis

Oxidation

Reduction

Redox

Collagen is a fibrous protein present most abundantly in

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heart

nucleus

connective tissues

Arteries

Mathematically, Boyle's law is indicated as:

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VT = K

PT = K

PV = K

None of these

When a metal rod is dipped in its one molar ionie solution

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Electricity is produced

Electricity is consumed

Redox reaction occurs

Potential difference is set up

Zwitterion is formed by

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Lysine

Benzoic acid

Aniline

Acetamide

The attractive forces which are created due to repulsion of electronic cloud of the molecules are

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dipole-dipole forces

ion dipole forces

instantaneous dipole-induced dipole forces

dipole-induced dipole forces

Which of the following is not isoelectronic?

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Na⁺

Mg²⁺

O^2-

Cl^-

Titanium is used as a catalyst in

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Hydrogenation

Dehydrogenation

Polymerization of P.E.

Oxidation of ammonia

The number of electrons in the M shell of the element with atomic number 24 is

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24

12

13

8

The metal present in blood is

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Al

Hg

Cu

Fe

Chromatography is derived from Greek word 'Khromatos' means:

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Type writting

Printing

Color writing

Writing

Formaldehyde is used to make

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Plastics

Medicine

Antiseptic

All of these

Which is a component of micro nutrient?

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N

Zn

P

K

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.

When ethylene glycol is heated with acidified potassium permanganate, the main organic compound obtained is

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Oxalic acid

Glyoxal

Formic acid

Ethanol

A limiting reactant is one which according to the stoichiometric equation

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Has excess mass

Has least mass

Has excess number of moles

Has least number of moles

White phosphorus is

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A mono atomic gas

P₄, a tetrahedral solid

P₈, a crown

A linear diatomic molecule

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