Q.1
Apart from Boy’s calorimeter, which process can be used for finding the calorific value of gases?
  • a) Bomb calorimeter
  • b) Heat balance calorimeter
  • c) Junker’s calorimeter
  • d) Heat flow calorimeter
Q.2
How many burners are used in Boy’s calorimeter for finding the calorific value for gases and volatile liquid?
  • a) 4
  • b) 3
  • c) 1
  • d) 2
Q.3
The water condensed from the products of combustion is collected and settles in the Boy’s bomb itself.
  • a) True
  • b) False
Q.4
What is the use of insulating baffles in Boy’s thermometer?
  • a) To deflect the gas upwards so that it can pass through the holes of the calorimeter
  • b) To make the gas stable in copper tube
  • c) To decrease the rate of heating
  • d) To decrease the temperature of cold water which is obtained from inlet
Q.5
What is the basic formula for calculating GCV in Boy’s calorimeter?
  • a) GCV = w(t2+t1)/V
  • b) GCV = w(t2-t1)/V
  • c) GCV = V(t2+t1)/w
  • d) GCV = V(t2-t1)/w
Q.6
What is the main source of error in conducting the experiment of Boy’s calorimeter?
  • a) The temperature of gas is greater than the room temperature
  • b) Due to presence of moisture
  • c) The mass of the gas is comparatively low
  • d) Due to the rise in ambient temperature
Q.7
What is the basic formula for calculating NCV in Boy’s Calorimeter?
  • a) NCV = GCV – (m/V)×587
  • b) NCV = GCV – (V/m)×587
  • c) NCV = GCV + (m/V)×587
  • d) NCV = GCV + (V/m)×587
Q.8
Determine the gross calorific value (GCV) of a gas, having following results after using Boy’s calorimeter: Volume of the gaseous fuel burnt = 0.mweight of the water used for cooling = 30.5 kg, Weight of the steam condensed =gm, Temperature of inlet water = 26.1and Temperature of outlet water = 36.5 0C?
  • a) 3100 Kcal/m3
  • b) 3310 cal/gm
  • c) 3410 Kcal/m3
  • d) 3780 Kcal/gm
Q.9
Determine net calorific value of a volatile liquid fuel, having following results after using Boy’s calorimeter: Volume of the liquid fuel burnt = 0.mweight of the water used for cooling = 48.5 kg, Weight of the steam condensed =gm, Temperature of inlet water = 35.2and Temperature of outlet water = 42.6 0C?
  • a) 2361.184 Kcal/m3
  • b) 2013.348 Kcal/m3
  • c) 2256.95 Kcal/m3
  • d) 2185.679 Kcal/m3
Q.10
Junker’s calorimeter cannot be used for measuring the calorific value of volatile liquid fuel.
  • a) True
  • b) False
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