Question
Who discovered benzene?

Answer

Michael Faraday discovered benzene in 1825.

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Comment on the thermodynamic stability of $NO ( g )$, given
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Convert ethyne to propyne.
Name the type of organic reaction involved in the following reaction.

CH3CH2I + KOH(aq) → CH3CH2OH + KI

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$\text{CH}_3-\text{CH}=\text{CH}-\text{CH}_2-\text{CH}=\text{CH}-\text{CH}-\text{CH}_2-\text{CH}=\text{CH}_2\\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ |\\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{C}_2\text{H}_5$
Round upto three significant figure :
34.216
Represent a galvanic cell in electrode and ions containing Cu electrode dipped in molar solution of copper sulphate and silver electrode dipped in molar solution of silver nitrate.
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Arrange elements of third period in increasing order of their ionization potential.
What is valence bond approach for the formation of covalent bond?
Chlorine is prepared in the laboratory by treating manganese dioxide $\left( M n O _{ 2 }\right)$ with aqueous hydrochloric acid according to the reaction
$\begin{array}{r}4 HCl ( aq )+ MnO _2(s) \rightarrow 2 H _2 O ( l )+ MnCl _2( aq ) + Cl _2(g)\end{array}$
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If $6 \times 10^{-24} Cl ^{-}$ions are present in a sample of $AlCl _3$, then tell the number of formula units of $AlCl _3$ present in it.