- A. HF
- B. HCl
- C. HI
- D. HBr
Chemical Engineering Basics
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Which of the following is a weak acid?
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Which of the, following is not associated with the functioning of a petrol engine ?
- A. Compression ignition system
- B. Spark plug
- C. Carburettor
- D. Otto cycle
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Which of the following is an ore dressing operation?
- A. Classification
- B. Smelting
- C. Roasting
- D. None of these
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Crystallisation of polymers is an undesirable property. Crystallization of celluloid is prevented by adding
- A. Glycerol
- B. Nitro cellulose
- C. Camphor
- D. None of these
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__________ of grey cast iron produces white cast iron.
- A. Tempering
- B. Rapid heating
- C. Rapid cooling
- D. Slow cooling
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A balanced draught boiler furnace employs __________ draught fan.
- A. Induced
- B. Forced
- C. Both A & B
- D. Neither A nor B
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Increasing sulphur content in pig iron tends to make it
- A. Soft
- B. Hard
- C. Tough
- D. Ductile & malleable
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Titanium can be easily welded using __________ welding.
- A. Submerged arc
- B. TIG
- C. Shielded metal arc
- D. Electroslag
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Which of the following is not an ore of iron?
- A. Chalcopyrite
- B. Magnetite
- C. Hemetite
- D. Limonite
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The bolt is subjected to __________ when the nut is tightened by putting the washer beneath it.
- A. Tension
- B. Shear
- C. Compression
- D. Bending & tension