I. It has a varied composition from one place to another.
ll. it constituents can be separated by physical means
lll. It contains unreactive noble gases
A. I and ll only
B. ll and lll only
C. l and lll only
D. l,lll and lll
Correct Answer:
Option A – I and ll only
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![Water of mass 120g at 50°C is added to 200g of water at 10°C and the mixture is well stirred. Calculate the temperature of the mixture. [Neglect heat losses to the surrounding]](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "Water of mass 120g at 50°C is added to 200g of water at 10°C and the mixture is well stirred. Calculate the temperature of the mixture. [Neglect heat losses to the surrounding]")