MCQ
Select the process in which least enthalpy change is associated :
  • A
    $O_{(g)} \to O^+_{(g)}$
  • $O_{(g)} \to O^-_{(g)}$
  • C
    $O^+_{(g)} \to O^{2+}_{(g)}$
  • D
    $S_{(g)} \to S^-_{(g)}$

Answer

Correct option: B.
$O_{(g)} \to O^-_{(g)}$
b

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

In which of the following arrangements the order is $NOT$ according to the property indicated against it
Correct order of $K_a$ value
Urea reacts with water to form $A$ which will decompose to form $B. B$ when passed through $Cu ^{2+}( aq ),$ deep blue colour solution $C$ is formed. What is the formula of $C$ from the following$?$
Dry distillation of sodium propanoate with sodalime gives
Consider the following reactions is correct
$2-$ chloro $-2-$ methylpentane on reaction with sodium methoxide in methanol yields :

$(1)\,\,\begin{array}{*{20}{c}}
  {\,\,\,\,\,\,C{H_3}} \\ 
  | \\ 
  {{C_2}{H_5}C{H_2}C - OC{H_3}} \\ 
  | \\ 
  {\,\,\,\,\,\,\,\,C{H_3}} 
\end{array}$

$(2)\,\,\begin{array}{*{20}{c}}
  {{C_2}{H_5}C{H_2}C = C{H_2}} \\ 
  {\,\,\,\,|} \\ 
  {\,\,\,\,\,\,\,\,\,\,C{H_3}} 
\end{array}$

$(3)\,\,\begin{array}{*{20}{c}}
  {{C_2}{H_5}CH = C - C{H_3}} \\ 
  {\,\,\,\,\,\,\,\,\,\,\,|} \\ 
  {\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_3}} 
\end{array}$

Hydrolysis of which of the following does not occur
In hydroboration reaction 
$I$. Syn addition takes place
$II$. Reaction proceed through formation of cyclic transition state
$III$. Markownikoff rule is followed in reaction
$IV$. Anti addition takes place and anti markownikoff rule is followed

Correct statement is/are

$Benzene$ $\xrightarrow[{{H_2}S{O_4}}]{{HN{O_3}}}\left( A \right)\xrightarrow[{FeC{l_3}}]{{C{l_2}}}\left( B \right)$

The major product $(B)$ is

Which of the following biphenyls is optically active?