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In an adiabatic expansion of a gas, its temperature : (A) Always increase (B) Always diminishes (C) Remains constant (D) None of these
For the adiabatic process of gas, the heat is kept zero. In the adiabatic expansion of the gas, the work done by the gas is always positive....
 
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Which of the following changes take place during roasting? (i) Impurities are removed as their volatile oxides. (ii) Ore is converted into its oxide. (iii) Changes like oxidation, chlorination, etc. take place.
Answer: (i),(ii) and (iii) Roasting causes chemical changes such as oxidation, chlorination, and so on. Impurities are eliminated
 
How many countries still have Shilling as currency? Bonus point: Which countries?

Answer: Four, Kenya, Uganda, Tanzania, and Somalia
 
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