Chemical Engineering Basics Mcqs

Q.  Percentage of argon (by volume) in dry atmospheric air is about________________?

a. 0.09
b. 0.3
c. 0.57
d. 0.94


ANSWER: See Answer
 
No explanation is available for this question!
MCQs:  In a forced draft cooling tower, water is cooled from 95 to 80°F by exposure to air with a wet bulb temperature of 70°F. In this case, the________________?
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MCQs:  The diffusion co-efficient of Ni in Cu at 1000 K is 1.93 × 10-16 m2S-1 and it is 1.94 × 10-14 m2S- 1 at 1200 K. The activation energy (in k. J.mole-1) for the diffusion of Ni in Cu is_________________?
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MCQs:  The critical pressure at which the latent heat of vaporization of steam becomes zero is _____________ Kg/cm2 ?
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MCQs:  For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm3) while the C.V. is same on weight basis (i.e., kcal/kg) ?
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MCQs:  What is the critical radius of insulation (cms) for a metallic cylinder, if the convective heat transfer co-efficient with the ambient atmosphere is 5 W/m2. °K? Thermal conductivity of metal and insulation material are 40 and 0.1 W/m.°K respectively ?
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MCQs:  In the X-ray radiography technique, the tube voltage for thicker plates as compared to thin plates, should be________________?
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MCQs:  A thin, flat & square plate measuring 2 m × 2 m is freely hanging in ambient air at 25°C. It is exposed to the solar radiation falling on one side of the plate at the rate of 500 W/m2. The plate temperature will remain constant at 30°C, if the convective heat transfer co-efficient is ________________ W/m2 °C ?
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MCQs:  The taper provided on pattern for its easy & clean withdrawal from the mould is termed as the _______________ allowance ?
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MCQs:  _______________ is the most important element, which controls the physical properties of steel ?
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MCQs:  ________________ is the hardest material out of the following ?
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MCQs:  Two solutions A1 & A2 have pH value of 2 & 6 respectively. It implies that the solution ?
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MCQs:  Cassiterite is an ore of_________________?
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MCQs:  Solidification time of a molten metal in a casting is proportional to (where, V = volume of metal & A = its surface area; in the casting) ?
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MCQs:  Cold chisel‟s hammers are made of___________________?
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MCQs:  LVDT used for displacement measurement is a/an _______________ Transducer?
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MCQs:  The swift cup test evaluates the following property of a sheet metal ?
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MCQs:  The concentration of (H+) ions is 4 x 10-5 in a solution. Then pH of the solution will be (Given log 4 = 0.6) ?
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MCQs:  Internal energy of a gas obeying Van-Der-Waals equation of state, [p + (a/v2)] (V – b) = RT, depends upon its___________________?
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MCQs:  Tip of the match stick contains a mixture of________________?
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MCQs:  For efficient performance of a blast furnace, the extent of reduction of Wustite (FeO) should be___________________?
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