Question
What are significant figures? State rules to determine it.

Answer

SELF

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S. No.
Column I
Column II
1.
Gypsum
$NaHCO_3$
2.
Plaster of Paris
$Na_2CO_3.10H_2O$
3.
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Hint : Requirements for comparison purposes.
On the basis of Le Chatelier principle explain how temperature and pressure can be adjusted to increase the yield of ammonia in the following reaction:
$
\begin{aligned}
& N_2(g)+3 H_2(g) \rightleftharpoons 2 NH_3(g) \\
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\end{aligned}
$
What will be the effect of the addition of argon to the above reaction mixture at constant volume?
Calculate the enthalpy change on freezing of 1.0 mol of water at $10.0^{\circ} C$ to ice at $-10.0^{\circ} C$.
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