MCQ
The internal energy of a substance
- ✓Increases with increase in temperature
- BDecreases with increase in temperature
- CCan be calculated by the relation $E = m{c^2}$
- DRemains unaffected with change in temperature
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| Element | Ionization | enthalpy | $(kJ/mol)$ |
| $1^{st}$ | $2^{nd}$ | $3^{rd}$ | |
| $A$ | $899$ | $1757$ | $14847$ |
| $B$ | $737$ | $1450$ | $7731$ |
Which of the following statements is correct ?
| Column $I$ | Column $II$ |
| $Image$ | $(p)$ sodium fusion extract of the compound gives Prussian blue colour with $\mathrm{FeSO}_4$ |
| $Image$ | $(q)$ gives positive $\mathrm{FeCl}_3$ test |
| $Image$ | $(r)$ gives white precipitate with $\mathrm{AgNO}_3$ |
| $Image$ | $(s)$ reacts with aldehydes to form the corresponding hydrazone derivative |
