Chemical Engineering Basics

1. Alcohols are not suitable as diesel engine fuel because the cetane number of alcohols is

1. Very low which prevents their ignition by compression
2. Very high which prevents their ignition by compression
3. Zero
4. None of these

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2. 'Amortization' in respect of financial obligation of a company means the

1. Liquidation of financial obligations on instalment basis
2. Commitment of financial obligation on priority
3. Liquidation of all the obsolete equipments of the company
4. Modernisation of the plant equipments

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3. 'Cryogenics' is concerned with the generation & use of low temperature in the range of

1. 0°K to 123°K
2. 0°C to - 123°C
3. 0°C to - 273°C
4. 0°K to 273°K

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4. 'Dikes' are low height walls made around the storage vessels meant for storing hazardous & inflammable material (e.g., petroleum products). Volume of dikes is equal to (where, V = volume of the storage vessel)

1. V
2. V/2
3. 2V
4. 3V

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5. 'Flare tower' used in industry is meant for

1. Venting off (after burning) the excess inflammable/toxic gases at high pressure
2. Absorbing the pollutant gases from the furnace exhaust
3. Cooling of furnace exhaust gases
4. None of these

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6. 'GASOHOL' widely used in Brazil as a motor fuel is a mixture of alcohol and

1. Petrol
2. LPG
3. Light hydrocarbon gases (e.g. butane or propane)
4. None of these

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7. 'Ice point' is designated on Fahrenheit temperature scale by

1. 0°
2. 32°
3. 62°
4. 212°

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8. __________ are normally subjected to sub-zero treatment.

1. Highly stressed parts
2. Gauges or precision parts
3. Cold rolled sheets
4. Non machinable materials

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9. __________ can replace tungsten in high speed steel.

1. Chromium
2. Vanadium
3. Cobalt
4. Molybdenum

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10. __________ cannot increase the fatigue strength of a material.

1. Grain refining
2. Grain coarsening
3. Surface hardening
4. Shot peening

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