CHEM (Diploma Mechanical Engineering 1st-2nd)

1. Basic concepts of Chemistry (10 hrs)

1.1 Matter, element, compound and mixtures, atom, molecule, ion,

symbols and formulae (recapitulation only)

1.2 Atomic mass (A), molar mass, mole concept, molar volume of gases

1.3 Solution, strength of solutions in grams per liter, molarity (M),

molality (m), mass fraction and mole fraction (numerical problems)

1.4 Chemical equations, thermo-chemical equations, balancing of

chemical equations (using partial equation method)

1.5 Numerical problems based on mole concept

1.6 Brief introduction and concept of Volumetry Analysis, Numerical

problem.

2. Atomic structure and Chemical Bonding (10 hrs)

2.1 Postulates of Bohr model of atom, success and failures of Bohr

model of atom

2.2 Heisenberg’s uncertainty principle

2.3 Elementary idea of modern concept of atom, quantum numbers

(significance only), definition of shells, sub shells and orbitals,

concept of orbitals, shapes of s & p orbitals only. Electronic

configuration of elements (atomic number 1 to 30 only) on the

basis of Aufbau principle, Pauli’s principle and Hund’s rule

2.4 Modern periodic law, periods and groups,

2.5 Division of the periodic table into s, p, d, and f blocks (details

 excluded)

2.6 Chemical bond and cause of bonding, Different type of Hybridzation

(sp, sp2

, sp3

)

2.7 Ionic bond, covalent bond, orbital concept of covalent bonding,

valence bond theory, sigma (σ) and pi (π) bonds.

2.8 Metallic bonding (electron sea model)

2.9 Coordinate bond with examples of ozone, ammonium chloride, H3NBF3

complex 

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3. Water (10 hrs)

3.1 Sources of water

3.2 Hard water, soft water, types of hardness, action of soap on hard

water

3.3 Degree of hardness in terms of calcium carbonate, Units of hardness

in Clark degree, French degree and ppm, Numerical problems.

3.4 Principle of hardness by EDTA method,

3.5 Disadvantages of hard water in domestic and industrial uses

3.6 Boiler water: causes and prevention of scale and sludge formation,

corrosion, priming & foaming and caustic embitterment

3.7 Softening of hard water by premutit and ion exchange processes

3.8 Qualities of drinking water and purification of available water for

drinking purposes, Reverse osmosis and drinking water purification

through reverse osmosis unit.

4. Equilibrium, Acids and Bases. (10 hrs)

4.1 Equilibrium state, equilibrium constant and statement of Lechatelier’s

principle with illustration

4.2 Ionization of electrolyte in aqueous solution, ionic equilibrium,

degree of ionization, self-ionization of water and ionic product of

water (Kw)

4.3 Concept of pH and pH scale, solubility product.

4.4 Arrhenius concept of acids/bases; strong acids/bases, weak

acids/bases, dissociation constants of acids/bases. Neutralization,

acid base titration, choice of indicators for acid base titration

4.5 Hydrolysis of salts, buffer solutions (acidic and basic), buffer action

of a buffer solution, applications of buffer solution

4.6 Simple numerical problems on pH, and degree of ionisation.

5. Electrochemistry. (9 hrs)

5.1 Electronic concept of oxidation and reduction, redox reactions

5.2 Electrolytes and non electrolytes

5.3 Electrolysis, Faradays laws of electrolysis

5.4 Applications of electrolysis in electrometallurgy, electro-refining and

electroplating.

5.5 Galvanic cells (elementary idea) brief description of Daniel cell, NiCd

cell, dry cell and lithium iodide cell

5.6 Lead storage batteries and maintenance free batteries

5.7 Simple numerical problems related to Faraday’s laws

6. Organic Chemistry. (10 hrs)

6.1 Tetra covalency of carbon, catenation (definition only) Homologous

series, functional groups and following organic families:

(a) alkanes (b) alkenes (c) alkynes (d) alcohols (e) ethers (f)

aldehydes and ketones (g) Carboxylic acids (h) esters (i) amides

(with structure and IUPAC names).

6.2 Organic Reaction mechanism, cleavage of covalent bond(Homolytic

and heterolytic) attacking reagents (Electrophilles and

Nucleophiles), Types of organic reaction(substitution, Addition,

elimination and rearrangement reactions). 

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6.3 Brief introduction concept of isomerism and stereo isomerism

(definition and geometrical isomerism in alkenes).

7. Environmental Pollution and its control (05 hrs)

7.1 Introduction

7.2 Causes and control of air, water, and soil pollutions

7.3 Noise pollution

7.4 Radio active pollution and its control

7.5 Sewage and its treatment

7.6 Green Chemistry ( a new route to the environmental Pollution).