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- Question
Raoult's law applies to the
Options- A. all liquid solutions
- B. non-ideal solution only.
- C. non-volatile solute.
- D. solvents.
- Correct Answer
- solvents.
- 1. Pick out the correct statement.
Options- A. Compression ratio of an Otto engine is comparatively higher than a diesel engine.
- B. Efficiency of an Otto engine is higher than that of a diesel engine for the same compression ratio.
- C. Otto engine efficiency decreases with the rise in compression ratio, due to decrease in work produced per quantity of heat.
- D. Diesel engine normally operates at lower compression ratio than an Otto engine for an equal output of work. Discuss
- 2. Pulverised coal passing through 200 mesh screen has a diameter of 0.074 mm (74 micron). The same passing through 50 mesh screen will have a dia of __________ mm.
Options- A. 0.007
- B. 0.30
- C. 50
- D. 0.014 Discuss
- 3. Out of the following refrigration cycles, which one has the minimum COP (Co-efficient of performance)?
Options- A. Air cycle
- B. Carnot cycle
- C. Ordinary vapour compression cycle
- D. Vapour compression with a reversible expansion engine Discuss
- 4. The controlling resistance in a rotary drum vacuum filter is the __________ resistance.
Options- A. piping
- B. cake
- C. filter medium
- D. none of these Discuss
- 5. Fog is an example of colloidal system of
Options- A. solid dispersed in gas.
- B. solid dispersed in liquid.
- C. liquid dispersed in gas.
- D. gas dispersed in liquid. Discuss
- 6. Red phosphorous is changed into white phosphorous by
Options- A. heating in presence of light.
- B. melting under pressure.
- C. vaporisation followed by condensation.
- D. none of these. Discuss
- 7. A. __________ mill is a revolving mill divided into two or more sections by perforated partitions in which preliminary grinding takes place at one end and the finishing grinding at the discharge end.
Options- A. compartment
- B. tube
- C. rod
- D. pebble. Discuss
- 8. Steam consumption in kg/hr in case of an evaporator is given by (where, C & E are capacity the economy of the evaporator respectively)
Options- A. C/E
- B. E/C
- C. CE
- D.
Discuss
- 9. The temperature of tempering oil baths maintained at 400°C during heat treatment of steel is measured by a/an __________ thermocouple.
Options- A. chromel-alumel
- B. iron-constantan
- C. platinum-platinum/rhodium
- D. none of these. Discuss
- 10. Lung cancer & DNA breakage are the major ill effects of excessive ozone exposure to human beings. Ozone layer depletion in the atmosphere is mainly caused by the presence of
Options- A. CO2
- B. SO2
- C. hydrocarbons
- D. CFC (chloro fluoro carbon) Discuss
More questions
Correct Answer: Efficiency of an Otto engine is higher than that of a diesel engine for the same compression ratio.
Correct Answer: 0.30
Correct Answer: Air cycle
Correct Answer: cake
Correct Answer: liquid dispersed in gas.
Correct Answer: vaporisation followed by condensation.
Correct Answer: compartment
Correct Answer: C/E
Correct Answer: iron-constantan
Correct Answer: CFC (chloro fluoro carbon)
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