Alkaline pyrogallate is used in Orsat’s apparatus for absorption of _________________?

Related Mcqs:

1. Orsat meter is used for__________________?

   A. gravimetric analysis of the flue gases
   B. volumetric analysis of the flue gases
   C. mass flow of the flue gases
   D. measuring smoke density of flue gases
   E. none of the above

2. The relative heat absorption for successively added equal areas of boiler convection heating surfaces____________________?

   A. increases
   B. decreases
   C. remains unaffected
   D. first increases and then decreases
   E. first decreases and then increases

3. The equivalent evaporation of a boiler is a measure to compare _________________?

   A. the given boiler with the model
   B. the two different boilers of the same make
   C. two different makes of boilers operat¬ing under the same operating conditions
   D. two boilers of same make but operaing under different conditions
   E. any type of boilers operating under any conditions

4. The increase in pressure _________________?

   A. lowers the boiling point of a liquid
   B. raises the boiling point of a liquid
   C. .does not affect the boiling point of a liquid
   D. reduces its volume
   E. none of the above

5. The lenght of Cornish boiler is of the order of _________________?

   A. 2-4 m
   B. 3-5 m
   C. 5-7.5 m
   D. 7-9 m
   E. 9-11 m

6. The pressure of reheat steam after passing through reheater compared to inlet condition is _________________?

   A. more
   B. less
   C. equal
   D. may be more or less depending on capacity of reheater
   E. none of the above

7. Expanding steam to a very low pressure (high vacuum) in steam engines is _________________?

   A. desirable
   B. economical
   C. essential
   D. optional
   E. uneconomical

8. In water wall furnace, the heat is transferred to the water-walls by _________________?

   A. convection
   B. radiation
   C. conduction
   D. radiation and conducton
   E. radiation and convection

9. Natural water circulation, by convection in water tube boilers, with increase in pressure of boiler _________________?

   A. increases
   B. decreases
   C. remains unaffected
   D. first increases and then decreases
   E. first decreases and then increases

10. In ordetjo obtain superheated steam, a superheater is added in an existing boiler. As as result, furnace vacuum will _________________?

    A. remain unaffected
    B. improve C. worsen
    C. may improve/worsen depending on size
    D. unpredictable