If a room is saturated with water vapour, the temperature of the room must be
at 0oC
above the dew point
at 100oC
below or at the dew point
Correct answer is D
No explanation has been provided for this answer.
336W
450W
560W
600W
Correct answer is C
p x t = heat energy
P x 1 x 60 = 100 x 336
p = 560W
50g
100g
150g
200g
Correct answer is C
Heat lost by L1 = heat gained by L2
cL1 = 2cL2
100 x 2cL2 x (78 - 66)
= xg x cL2 x (66 - 50)
xg = 150g
2.6 x 105Nm-2
2.4 x 105Nm-2
2.2 x 105Nm-2
1.3 x 105Nm-2
Correct answer is B
\(\frac{p_1}{T_1}\) = \(\frac{p_2}{T_2}\)
\(\frac{2 \times 10^5}{27 + 273}\) = \(\frac{p_2}{87 + 273}\)
P2 = 2.4 x 105Nm-2
The melting point of naphthalene is 78oC. What is this temperature in kelvin
100k
351k
378k
444k
Correct answer is B
T = 78 + 273
= 351k