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Thermal diffusivity of a substance is given by (where h = Thermal diffusivity, ρ = Density of substance, S = Specific heat, and k = Thermal conductivity)?
Answer: Option 1 Thermal Diffusivity is defined as the ratio of heat conducted to the heat energy stored per unit volume of a material.the thermal conductivity of a substance divided...
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The compressibility factor of a gas is given by (where, V₁ = actual volume of the gas V₂ = gas volume predicted by ideal gas law )?
Answer: Option 1 The compressibility factor is given by $$Z = \frac{{P{V_1}}}{{RT}}.$$ If at the same temperature and pressure if the same gas exists as ideal gas than we...
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The variation of thermal conductivity of a metal with temperature is often correlated using an expression of the form K = K₀ + at. where, K is the thermal conductivity and T is the temperature (in °K). The units of 'a' in SI system will be?
Answer: Option 3 Let'
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Directions : Following question consists of a statement followed by four arguments I, II, III and IV. You have to decide which of the arguments is a STRONG arguments and which is a WEAK Argument. Statement : Should there be a complete ban on manufacture and use of firecrackers Arguments : I. No. This will render thousands of workers jobless. II. Yes. The firecracker manufacturers use child labour to a large extent. III. Yes. This will be a concrete step to reduce noise and air pollution. IV. No. Use of firecrackers makes certain special occasions more lively and joyful.?
Answer: Option 2 Clearly, banning a product would surely render jobless the large number of workers involved in manufacturing it. Besides, firecrackers on burning produce explosive sounds and immense poisonous...
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Which of the following has maximum value of thermal conductivity?
Answer: Option 1 Thermal conductivity refers to the amount/speed of heat transmitted through a material. Heat transfer occurs at a higher rate across materials of high thermal conductivity than those...
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Threshold limit value (TLV) i.e., the maximum permissible safe limit of phosgene gas which Hitler used to use to kill his enemies in 'gas chamber' is about __________ ppm.?
Answer: Option 1 Let'
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Which of the following is not a continuous waste heat recovery equipment from the flue gases going out of furnace?
Answer: Option 2 Let'
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Which of the following has maximum thermal conductivity at the same temperature?
Answer: Option 1 Let'
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Which of the following has maximum thermal conductivity?
Answer: Option 1 Let'
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