If a given volume of water in a 220V heater is boiled in 5 min, then same volume
If a given volume of water in a 220V heater is boiled in 5 min, then same volume of water in 110V heater can be boiled in what time interval?
Options
(a) 20 […]
Thermodynamics
At 0⁰C, 15 gm of ice melts to form water at 0⁰C. The change in entropy is
At 0⁰C, 15 gm of ice melts to form water at 0⁰C. The change in entropy is
Options
(a) zero (b) 18.5 (c) 15 (d) None of these
Correct Answer:
18.5
Explanation:
Heat […]
40 g of Argon is heated from 40⁰C to 100⁰C (R=2 cal/mole). Heat absorbed at constant
40 g of Argon is heated from 40⁰C to 100⁰C (R=2 cal/mole). Heat absorbed at constant volume is
Options
(a) 100 cal (b) 80 cal (c) 180 cal (d) 120 cal
Correct Answer: […]
The coefficient of performance of a Carnot refrigerator working between 30⁰C and 0⁰C is
The coefficient of performance of a Carnot refrigerator working between 30⁰C and 0⁰C is
Options
(a) 10 (b) 1 (c) 9 (d) zero
Correct Answer:
9
Explanation:
Coefficient of performance = K .·. […]
During an adiabatic process, the cube of the pressure is found to be inversely
During an adiabatic process, the cube of the pressure is found to be inversely proportional to the fourth power of the volume. Then the ratio of specific heats is
Options
(a) 1 (b) […]
A carnot engine working between 300 K and 600 K has a work output of 800J per cycle.
A carnot engine working between 300 K and 600 K has a work output of 800J per cycle. The amount of heat energy supplied to the engine from the source in each cycle is
If a carnot engine is working with source temperature at 227⁰C and sink
If a carnot engine is working with source temperature at 227⁰C and sink temperature at 27⁰C, its efficiency will be
Options
(a) 40% (b) 10% (c) 67% (d) 50%
Correct Answer:
40%
Explanation: […]
If the pressure of gas is increased from 1.01×10⁵ Pa to 1.165×10⁵ Pa and volume
If the pressure of gas is increased from 1.01×10⁵ Pa to 1.165×10⁵ Pa and volume is decreases by 10% at constant temperature then the bulk modulus of the gas is
Options
(a) 15.5×10⁵ […]
An experiment takes 10 minutes to raise temperature of water from 0⁰C to 100⁰C
An experiment takes 10 minutes to raise temperature of water from 0⁰C to 100⁰C and another 55 minutes to convert it totally into stream by a stabilized heater. The latent heat of vapourization comes out […]
The dimensions of latent heat are
The dimensions of latent heat are
Options
(a) [M⁰L²T⁻²] (b) [M⁰L¹T⁻²] (c) [M²L⁰T⁻²] (d) [M⁰L⁻²T⁻²]
Correct Answer:
[M⁰L²T⁻²]
Explanation:
No explanation available. Be the first to write the explanation for this question by […]