Question
Sum of $x + y =$ ?

Answer

5

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

Combustion of $50\,mL$ methane is carried out with $150\,mL$ of air containing $21\%$ of oxygen. What will be the total volume of gaseous mixture after reaction ? ............ $\mathrm{mL}$

$C{H_{4(g)}} + 2{O_{2(g)}} \to C{O_{2(g)}} + 2{H_2}{O_{(g)}}$

If $50\%$  of a reaction occurs in $100$ seconds and $75\%$ of the reaction occurs in $200$ seconds, the order of this reaction is
A solution containing $12.5\, g $ of non-electrolyte substance in $250\, g$ of water shows  boiling point elevation of $0.52\, K.$ Calculate the molar mass of the substance. $(K_b = 0.52\, K \, kg \,mol^{-1})$ ......... $g \,mol^{-1}$.
$\begin{matrix}
   \begin{matrix}
   \,\,\,\,\,\,\,\,\,O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O\,  \\
   \,\,\,\,\,\,\,||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||  \\
   C{{H}_{3}}-C-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{2}}-C-H  \\
\end{matrix}  \\
   \downarrow KOH  \\
\end{matrix}$

Number of intramolecular aldol condensation product is

The enthalpy change at $298\,K$ for decomposition is given in the following two steps

Step $I\,\,:$ ${H_2}O(g)\, \to \,H(g)\, + \,OH(g)\,;$              $\Delta H = 498\,kJ\,mol^{-1}$

Step $II\,\,:$ $OH(g)\, \to \,H(g)\, + \,O(g)\,;$              $\Delta H = 428\,kJ\,mol^{-1}$

The bond enthalpy of the $O-H$ bond is....$kJ\,mol^{-1}$

What volume of $0.8\,M$ solution contains $ 0.1 \,mole$ of the solute ......... $ml$
Consider the following equation:

$2 SO _2( g )+ O _2( g ) \rightleftharpoons 2 SO _3( g ), \Delta H =-190\,kJ$

The number of factors which will increase the yield of $SO _3$ at equilibrium from the following is $.............$.

$A.$ Increasing temperature

$B.$ Increasing pressure

$C.$ Adding more $SO _2$

$D.$ Adding more $O _2$

$E.$ Addition of catalyst

$0.8\, \mathrm{~g}$ of an organic compound was analysed by Kjeldahl's method for the estimation of nitrogen. If the percentage of nitrogen in the compound was found to be $42\, \%$, then $....\,\mathrm{mL}$ of $1\, \mathrm{M}$ $\mathrm{H}_{2} \mathrm{SO}_{4}$ would have been neutralized by the ammonia evolved during the analysis.
The number of electrons present in all the completely filled subshells having $n =4$ and $s =+\frac{1}{2}$ is __________________ . (Where $n =$ principal quantum number and $s = spin$ quantum number)
From the compounds given below, number of compounds which give positive Fehling's test is..................

Benzaldehyde, Acetaldehyde, Acetone,  Acetophenone,Methanal, $4-$nitrobenzaldehyde, cyclohexane carbaldehyde.