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52)Which of the following pairs will not show diffusion?
Answer is:-Salt and Sand
Because salt and Sand do not mix each other and so one do not diffuse into another.
53)At what temperature the thermometer readings in °C and °F are the same?
Answer is:- -40
Proof:-
F = 9/5*C + 32
Put F=C
C=9/5*C + 32
C - 9/5*C = 32
-4/5*C = 32
C = (32*5)/-4=(-160/4)=-40°
(54)A gas can be liquified by
Answer is:-decreasing temperature and increasing pressure.
Hope it helps
52)Which of the following pairs will not show diffusion?
Answer is:-Salt and Sand
Because salt and Sand do not mix each other and so one do not diffuse into another.
53)At what temperature the thermometer readings in °C and °F are the same?
Answer is:- -40
Proof:-
F = 9/5*C + 32
Put F=C
C=9/5*C + 32
C - 9/5*C = 32
-4/5*C = 32
C = (32*5)/-4=(-160/4)=-40°
(54)A gas can be liquified by
Answer is:-decreasing temperature and increasing pressure.
Hope it helps
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