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Consider the following statements about thermal conductivity: 1) Thermal conductivity decreases with increasing molecular weight 2) Thermal conductivity of non-metallic liquids generally decreases with increasing temperature 3) Thermal conductivity of gases and liquids is generally smaller than that of solids Which of the above statements are correct?
Consider the following statements regarding removal of impurities from water: 1. Settleable solids are removed by filtration. 2. Volatile solids are removed through sedimentation. 3. Dissolved solids are removed through reverse osmosis. 4. Colloidal solids are removed by coagulation. Which of the above statements are correct?
In a batch process, the reaction takes place in the presence of an acid medium. The acid is drained from the reaction vessel at the rate of 15ml/s as a result of the density difference of the acid from the reacting component. To avoid wastage of acid, it is recycled to an acid tank which has 1000 L capacity. The acid drained from the reaction vessel, picks up 50 g/L solids from the reactor. Acid is fed once again to the process from acid tank. When the process is started, the acid is almost pure in the tank as a result of filtration. As the reaction proceeds, acid in the tank gets more and more contaminated with the solids. The concentration of the solids should not exceed 100 g/L from the process point of view. The batch time is 16h. Estimate whether the concentration of the solids will exceed 100g/L during the batch reaction.
The thermal diffusivities for gases are generally
The domestic sewage of a town was tested for total solids and the following results were obtained : Weight of sample of sewage = 1000 gm Weight of solids after evaporation of liquid = 0.952 gm Weight of dry residue after ignition = 0.516 gm What is the value of volatile solids?
Two statements are given followed by three conclusions numbered I, II and III. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements. Statements: All liquids are solids. All gases are solids. Conclusions: I. Some solids are liquids. II. Some liquids are gases. III. No liquid is gas.
A series is given with one term missing. Select the correct alternative from the given ones that will complete the series. Bakrehswar Thermal Power Station, Bandel Thermal Power Station, Santaldih Thermal Power Station, Kolaghat Thermal Power Station, ?
Which of the following power station is situated in Madhya Pradesh state? Satpura Thermal Power Station Shree Singaji Thermal Power Station Sanjay Gandhi Thermal Power Station Amarkantak Thermal Power Station
A thermal reservoir at 538°C is brought into thermal communication with another thermal reservoir at 260°C, and as a result 1055 kJ of heat is transferred only from the higher to lower temperature reservoir. Determine the change in entropy of the universe due to the exchange of heat between these two thermal reservoirs.
__________ equation applies to diffusivities in liquids.