Chemical Engineering :: Chemical Engineering Basics

1.	Which one of the following is incombustible ?
	A. H2 B. CCl4 C. C2H2 D. S Answer & Explanation Answer: Option B Explanation: No answer description available for this question.

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2.	The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used. For general purpose cutter grinding __________ grinding wheel is normally used.
	A. hard B. soft C. silicon carbide D. aluminium oxide Answer: Option D Explanation: No answer description available for this question.

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3.	Tin based white metals are used, where bearings are subjected to
	A. high pressure & load. B. low pressure & load. C. high temperature. D. large surface wear. Answer: Option A Explanation: No answer description available for this question.

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4.	Friction factor for fluid flow in pipe does not depend upon the
	A. pipe length. B. pipe roughness. C. fluid density & viscosity. D. mass flow rate of fluid.

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5.	All of the following alloying elements of steel increases hardness but sacrifice ductility, except
	A. nickel B. vanadium C. molybdenum D. chromium Answer: Option A Explanation: No answer description available for this question.

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6.	The following type of bonding is strongly directional in solids.
	A. Vander Waal's B. Ionic C. Metallic D. Covalant Answer: Option D Explanation: No answer description available for this question.

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7.	Fog is an example of colloidal system of
	A. solid dispersed in gas. B. solid dispersed in liquid. C. liquid dispersed in gas. D. gas dispersed in liquid. Answer: Option C Explanation: No answer description available for this question.

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8.	Chromium molybdenum steel can not be welded using __________ welding.
	A. thermit B. electrical resistance C. oxy-acetylene D. any of these Answer: Option B Explanation: No answer description available for this question.

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9.	Speisses is a mixture of the following:
	A. Arsenides of heavy metals. B. Antimonides of heavy metals. C. Arsenides & antimonides of heavy metals. D. Iron, cobalt and nickel. Answer: Option A Explanation: No answer description available for this question.

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10.	Auto collimator is used to check
	A. flatness B. angle C. rotor balancing D. roughness Answer: Option B Explanation: No answer description available for this question.

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