MCQ
Which statement about reactions that produce heat is not correct?
- ABurning magnesium produces hear energy
- BThe overall reaction is exothermic
- CThe products have more energy than the reactants
- DThe temperature of the surroundings increases
Explanation:
In a exothermic reaction heat is released for stability of product with less energy.
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$C{H_2} = CH - C \equiv C - C{H_2} - CN$
[Given : $R_{\mathrm{H}}\left(\right.$ Rydberg constant) $=2.18 \times 10^{-18} \mathrm{~J}$.
$h($ Plank's constant $)=6.6 \times 10^{-34}$ J.s. $]$

