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- Question
Wheat is ground into flour in a
Options- A. hammer crusher
- B. roller crusher
- C. impact mill
- D. fluid energy mill
- Correct Answer
- roller crusher
- 1. The shell side pressure drop in a shell and tube heat exchanger is maximum for __________ baffle.
Options- A. disk and ring
- B. segmental
- C. orifice
- D. independent of the type of Discuss
- 2. Theoretical capacity of crushing rolls in tons/hr is given by (where, V = peripherial velocity, m/sec. W = width of rolls, m Dr = distance between rolls ? = density of material to be crushed, kg/m3 here, V =?N.D where, N = speed of the rolls in rotation per second (rps) D = diameter of rolls, m)
Options- A. 3.6 V.W.Dr.?
- B. 3.6 V.W. ?
- C. 3.6 W.Dr.?
- D. 3.6 V.W.Dr/? Discuss
- 3. The heat capacity of a substance is
Options- A. greater for liquid state than for solid state.
- B. lower for liquid state than for gaseous state.
- C. higher for solid state than for liquid state.
- D. equal for solid and liquid states below melting point. Discuss
- 4. The maximum permissible noise level to which a man working in a chemical plant can be exposed for eight hours per day is about __________ decibels.
Options- A. 60
- B. 90
- C. 105
- D. 120 Discuss
- 5. The work index in Bond's law for crushing of solids has the following dimensions
Options- A. no units (dimensionless)
- B. kWh/ton
- C. kW/ton
- D. kWh.m1/2/ton Discuss
- 6. A fertiliser contains 82% N2. It could be
Options- A. urea
- B. liquid NH3
- C. ammonium nitrate
- D. none of these Discuss
- 7. Which fertiliser is made (using coke oven gas) in by products plant of an integrated steel plant?
Options- A. Urea
- B. CAN
- C. Ammonium sulphate
- D. Superphosphate Discuss
- 8. In an exothermic chemical reactor, the manipulated variable is the flow rate of
Options- A. coolant
- B. reactants
- C. product
- D. none of these Discuss
- 9. A mixture of phosphate rock __________ is heated in an electric furnace to produce phosphorous.
Options- A. salt & coke
- B. sand & coke
- C. and coke
- D. and sand Discuss
- 10. With increases in pressure, the conversion of ammonium carbamate into urea
Options- A. increases
- B. decreases
- C. remains unaltered
- D. can either increase or decrease depends on biuret content Discuss
More questions
Correct Answer: orifice
Correct Answer: 3.6 V.W.Dr.?
Correct Answer: greater for liquid state than for solid state.
Correct Answer: 90
Correct Answer: kWh/ton
Correct Answer: liquid NH3
Correct Answer: Ammonium sulphate
Correct Answer: coolant
Correct Answer: sand & coke
Correct Answer: increases
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