JEE Mains · Chemistry · STD 11 - 1. Some basic concept of chemistry
An organic compound gives \(0.220 g\) of \(CO _2\) and \(0.126 g\) of \(H _2 O\) on complete combustion. If the \(\%\) of carbon is 24 then the \(\%\) hydrogen is \(......\times 10^{-1} \cdot(\) Nearest integer \()\)
- A \(51\)
- B \(52\)
- C \(56\)
- D \(53\)
Answer & Solution
Correct Answer
(C) \(56\)
Step-by-step Solution
Detailed explanation
Moles of \(CO _2=\frac{0.22}{44}=\frac{1}{200}\) \(\therefore\) Moles of carbon \(=\left(\text { Moles of } CO _2\right) \times 1\) \(=\frac{1}{200}\) \(\therefore\) wt. of \(C =\frac{1}{200} \times 12=0.06\) \(\text { \% of } C =\frac{0.06}{ W } \times 100=24\)…
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
- From the following statements regarding \(H_2O_2,\) choose the incorrect statement :JEE Mains 2015 Medium
- \(A\) and \(B\) decompose via first order kinetics with half-lives \(54.0\, min\) and \(18.0\, min\) respectively. Starting from an equimolar non reactive mixture of \(A\) and \(B\), the time taken for the concentration of \(A\) to become \(16\) times that of \(B\) is ...... \(min.\) (Round off to the Nearest Integer).JEE Mains 2021 Medium
- The magnetic moment of a transition metal compound has been calculated to be \(3.87\) \(B.M.\) The metal ion isJEE Mains 2023 Medium
- The decreasing order of case of alkaline hydrolysis for the following ester is
JEE Mains 2019 Hard - Identify the molecule \(( X )\) with maximum number of lone pairs of electrons (obtained using Lewis dot structure) among \(HNO _3, H _2 SO _4, NF _3\) and \(O _3\). Choose the correct bond angle made by the central atom of the molecule (X).JEE Mains 2026 Hard
- The energy of an electron in first Bohr orbit of H -atom is -13.6 eV. The magnitude of energy value of electron in the first excited state of \(\mathrm{Be}^{3+}\) is ________ eV. (nearest integer value)JEE Mains 2025 Easy
More PYQs from JEE Mains
- The vehicles carrying inflammable fluids usually have _______ metallic chains touching the ground.JEE Mains 2024 Hard
- Let an ellipse with centre \((1,0)\) and latus rectum of length \(\frac{1}{2}\) have its major axis along \(x\)-axis. If its minor axis subtends an angle \(60^{\circ}\) at the foci, then the square of the sum of the lengths of its minor and major axes is equal to \(...........\).
JEE Mains 2023 Hard - A particle executes simple harmonic motion between \(x =- A\) and \(x =+ A\). If time taken by particle to go from \(x=0\) to \(\frac{A}{2}\) is \(2 s\); then time taken by particle in going from \(x =\frac{ A }{2}\) to \(A\) is \(.........\,s\)JEE Mains 2023 Medium
- To get output ‘\(1\)’ at \(R\), for the given logic gate circuit the input values must be
JEE Mains 2019 Hard - The number of permutations, of the digits \(1,2,3,...7\) without repetition, which neither contain the string \(153\) nor the string \(2467\), is \(........\).JEE Mains 2023 Hard
- Consider a class of \(5\) girls and \(7\) boys. The number of different teams consisting of \(2\) girls and \(3\) boys that can be formed from this class, if there are two specific boys \(A\) and \(B\), who refuse to be the members of the same team, isJEE Mains 2019 Hard