JEE Mains · Chemistry · STD 12 -8.1. Aldehydes and ketones
In compound \(( Q )\), the percentage of oxygen is __________ %. (Nearest integer)
- A 8
- B 10
- C 12
- D 14
Answer & Solution
Correct Answer
(B) 10
Step-by-step Solution
Detailed explanation
Molecular mass of Q is \(=157\) \(\%\) of oxygen in product ' \(Q\) ' is \(=\frac{16}{157} \times 100=10.19 \%\)
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- When a small amount of \(KMnO_4\) is added to concentrated \(H_2SO_4\), a green oily compound is obtained which is highly explosive in nature. Compound may beJEE Mains 2013 Medium
- Which one of the following molecules is polar ?JEE Mains 2013 Hard
- The d-orbital electronic configuration of the complex among \(\quad\left[\mathrm{Co}(\mathrm{en})_3\right]^{3+}, \quad\left[\mathrm{CoF}_6\right]^{3-}\), \(\left[\mathrm{Mn}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}\) and \(\left[\mathrm{Zn}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}\) that has the highest CFSE is which?JEE Mains 2025 Easy
- Arrange the following conformational isomers of \(n-\)butane in order of their increasing potential energy :
JEE Mains 2021 Easy - Consider the following plots of log of rate constant \(\mathrm{k}(\log \mathrm{k})\) vs \(\frac{1}{\mathrm{~T}}\) for three different reactions. The correct order of activation energies of these reactions is which?
JEE Mains 2025 Medium - Elements X and Y belong to Group 15. The difference between the electronegativity values of 'X' and phosphorus is higher than that of the difference between phosphorus and 'Y'. 'X' & 'Y' are respectivelyJEE Mains 2026 Hard
More PYQs from JEE Mains
- Equation of travelling wave on a stretched string of linear density \(5\,g/m\) is \(y = 0.03\,sin\,(450\,t -9x)\) where distance and time are measured in \(SI\) united. The tension in the string is ... \(N\)JEE Mains 2019 Medium
- Let \(S = \left\{ {\left( {\begin{array}{*{20}{c}}
{{a_{11}}}&{{a_{12}}}\\
{{a_{21}}}&{{a_{22}}}
\end{array}} \right):{a_{ij}} \in \left\{ {0,1,2} \right\},{a_{11}} = {a_{22}}} \right\}\) Then the number of non-singular matrices in the set \(S\) isJEE Mains 2013 Hard - The coefficient of \(x^{70}\) in \(x^2(1+x)^{98}+x^3(1+x)^{97}+\) \(x^4(1+x)^{96}+\ldots \ldots . .+x^{54}(1+x)^{46}\) is \({ }^{99} \mathrm{C}_p-{ }^{46} \mathrm{C}_{\mathrm{q}}\). Then a possible value to \(\mathrm{p}+\mathrm{q}\) is :JEE Mains 2024 Hard
- Half life of zero order reaction \(\mathrm{A} \rightarrow\) product is 1 hour, when initial concentration of reaction is \(2.0 \mathrm{~mol} \mathrm{~L} \mathrm{~L}^{-1}\). The time required to decrease concentration of A from 0.50 to \(0.25 \mathrm{~mol} \mathrm{~L}^{-1}\) is _______.JEE Mains 2025 Easy
- The compound with molecular formula \(\mathrm{C}_6 \mathrm{H}_6\), which gives only one monobromo derivative and takes up four moles of hydrogen per mole for complete hydrogenation has ________ \(=\) electrons.JEE Mains 2025 Medium
- Let \(y=y(x), y>0\), be a solution curve of the differential equation \(\left(1+x^2\right) d y=y(x-y) d x\). If \(y(0)=1\) and \(y(2 \sqrt{2})=\beta\), thenJEE Mains 2023 Hard