During Lassaigne's test, the elements present in an organic compound are converted from :
Ionic form to ionic form
Covalent form to ionic form
Covalent form to covalent form
Ionic form to covalent form
A solution of copper sulphate is electrolysed for 10 minutes with a current of 1.5 amperes. The mass of copper deposited at cathode is :
(Given : Molar mass of $\mathrm{Cu}=63 \mathrm{~g} \mathrm{~mol}^{-1}$;
$$ \left.1 \mathrm{~F}=96487 \mathrm{C} \mathrm{~mol}^{-1}\right) $$
1.7018 g
0.2938 g
2.4036 g
0.5876 g
At a certain temperature, $\mathrm{T}(\mathrm{K})$, during a process, 500 J is absorbed by the system and work of 200 J is done by the system. Then change in internal energy of the system is :
400 J
300 J
700 J
500 J
For a certain reaction $R \rightarrow$ Product, the plot of concentration $[R]$ vs time has a negative slope as shown. The order of reaction is :

0
1
2
2.5
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