Discussion
Home ‣ Chemical Engineering ‣ Stoichiometry See What Others Are Saying!
- Question
Osmotic pressure of a dilute solution of a non volatile solute in a solvent obeying Raoult's law is proportional to the
Options- A. temperature.
- B. volume of solution.
- C. moles of non-volatile solute.
- D. none of these.
- Correct Answer
- temperature.
- 1. Pick out the wrong statement.
Options- A. A ferromagnetic material becomes paramagnetic above the 'Curie temperature'.
- B. Permanent magnets are made of hard materials, whereas electromagnets require soft magnetic materials.
- C. Soft magnetic materials (e.g., pure iron) have higher permeability and low hysterisis loss and coercive forces.
- D. Tungsten steel and alnico are not hard magnetic materials. Discuss
- 2. Dome temperature of blast furnace stove is most accurately measured by a
Options- A. radiation pyrometer.
- B. platinum-platinum/rhodium ther-mocuple.
- C. iron-constantan thermocouple.
- D. platinum resistance thermometer. Discuss
- 3. 1 centistoke is equal to __________ Redwood I seconds.
Options- A. 1
- B. 4.08
- C. 0.408
- D. 40.8 Discuss
- 4. Addition of grog in fireclay brick during its manufacture is advantageous, because it results in
Options- A. less shrinkage in heating, decreased apparent porosity & increased specific gravity.
- B. high strength & thermal spalling resistance.
- C. less addition of water to get a workable plasticity & lesser time required for drying the raw refractories and hence increased rate of production.
- D. all (a), (b) and (c). Discuss
- 5. The maximum adiabatic flame temperature of fuels in air is __________ the maximum flame temperature in pure oxygen.
Options- A. lower than
- B. higher than
- C. same as
- D. not related to Discuss
- 6. Which of the following is a desirable characteristic of an instrument?
Options- A. High drift
- B. High fidelity
- C. High measuring lag
- D. Poor reproducibility Discuss
- 7. A pressure vessel is said to be made of 'thick' shell, if the ratio of its diameter to wall thickness is
Options- A. 10
- B. 10
- C. 20
- D. 20 Discuss
- 8. For existence of aquatic life in water, the dissolved oxygen content in it, should not be less than __________ ppm.
Options- A. 10000
- B. 5
- C. 500
- D. 1000 Discuss
- 9. Test piece for determination of RUL of a refractory is heated in a/an
Options- A. oxidising atmosphere
- B. reducing atmosphere
- C. electric furnace
- D. neutral atmosphere Discuss
- 10. __________ polymer is used for making unbreakable crockery.
Options- A. Thermoplastic
- B. Melamine
- C. Addition
- D. none of these Discuss
More questions
Correct Answer: Tungsten steel and alnico are not hard magnetic materials.
Correct Answer: platinum-platinum/rhodium ther-mocuple.
Correct Answer: 4.08
Correct Answer: all (a), (b) and (c).
Correct Answer: lower than
Correct Answer: High fidelity
Correct Answer: 10
Correct Answer: 5
Correct Answer: electric furnace
Correct Answer: Melamine
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