Chemical Engineering Basics

451. Optical activity is a/an __________ property.

1. Additive
2. Constitutive
3. Both (A) & (B)
4. Neither (A) nor (B)

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452. Other parameters remaining same, the recrystallisation temperature of an alloy is lowered, when

1. Strain rate is increased
2. Grain size is increased
3. Prior cold deformation is increased
4. Not affected by any of the above parameters

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453. Otto cycle used in spark ignition petrol engines is also known as the constant __________ cycle.

1. Volume
2. Pressure
3. Heat
4. None of these

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454. Out of the following __________ iron has the best capability to bear sudden & excessive shocks.

1. White
2. Cast
3. Wrought
4. Pig

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455. Out of the following substances, one ton of __________ will store the maximum heat for a rise of 30°C in temperature.

1. Steel
2. Lignite
3. Water
4. Lime stone

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456. Out of the following the refractive index is the highest for

1. Glass
2. Diamond
3. Brine
4. Kerosene

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457. Out of the following, maximum temperature drop for a given heat flow & for the same thickness will be in the case of

1. Steel
2. Glass wood
3. Copper
4. Fireclay bricks

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458. Out of the following, the __________ pipe has the least corrosion resistance.

1. Mild steel
2. Copper
3. Cast iron
4. Wrought iron

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459. Out of the following, the alloy which has equal percentage of constituents, is

1. White metal
2. Gun metal
3. Duralumin
4. Constantan

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460. Out of the following, the best material capable of withstanding shock & vibration without the danger of cracking is

1. Malleable iron
2. Grey cast iron
3. Chilled cast iron
4. White cast iron

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