JEE Mains · Chemistry · STD 12 - p -Block elements - ll
The ratio of sigma and \(\pi\) bonds present in pyrophosphoric acid is \(......\).
- A \(6\)
- B \(8\)
- C \(5\)
- D \(4\)
Answer & Solution
Correct Answer
(A) \(6\)
Step-by-step Solution
Detailed explanation
\(\frac{\sigma}{\pi}=\frac{12}{2}=6\) So, Answer is \(6\)
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
- The conversion of hydroxyapatite occurs due to presence of \(\mathrm{F}^{-}\)ions in water. The correct formula of hydroxyapatite is:JEE Mains 2021 Hard
- The plots of radial distribution functions for various orbitals of hydrogen atom against \('r ^{\prime}\) are given below \({image}\) The correct plot for \(3\, s\) orbital is
JEE Mains 2021 Easy - \(1\,L,0.02\,M\) solution of \(\left[ Co \left( NH _3\right)_5 SO _4\right] Br\) is mixed with \(1\,L,0.02\,M\) solution of \(\left[ Co \left( NH _3\right)_5 Br _3\right] SO _4\). The resulting solution is divided into two equal parts (X) and treated with excess \(AgNO _3\) solution and \(BaCl _2\) solution respectively as shown below: \(1\,L\) Solution \(( X )+ AgNO _3\) solution (excess) \(\rightarrow Y\) \(1\,L\) Solution \(( X )+ BaCl _2\) solution (excess) \(\rightarrow Z\) The number of moles of \(Y\) and \(Z\) respectively areJEE Mains 2023 Medium
- When 1 g of compound (X) is subjected to Kjeldahl's method for estimation of nitrogen, 15 mL, 1M \(H_{2}SO_{4}\) was neutralized by ammonia evolved. The percentage of nitrogen in compound (X) is:JEE Mains 2026 Hard
- Two compounds \(A\) and \(B\) with same molecular formula \(\left( C _{3} H _{6} O \right)\) undergo Grignard's reaction with methylmagnesium bromide to give products \(C\) and \(D\). products \(C\) and \(D\) show following chemical tests.
\(C\) and \(D\) respectively areTest \(C\) \(D\) Ceric ammonium nitrate Test Positive positive Lucas Test Turbidity obtained after five minutes Turbidity obtained immediately Iodoform Test Positive Negative JEE Mains 2020 Medium - Which of the following is/are not correct with respect to energy of atomic orbitals of hydrogen atom?
(A)\(1 \mathrm{~s} \lt 2 \mathrm{p} \lt 3 \mathrm{~d} \lt 4 \mathrm{~s}\)
(B) \(1 \mathrm{~s} \lt 2 \mathrm{~s}=2 \mathrm{p} \lt 3 \mathrm{~s}=3 \mathrm{p}\)
(C) \(1 \mathrm{~s} \lt 2 \mathrm{~s} \lt 2 \mathrm{p} \lt 3 \mathrm{~s} \lt 3 \mathrm{p}\)
(D) \(1 \mathrm{~s} \lt 2 \mathrm{~s} \lt 4 \mathrm{~s} \lt 3 \mathrm{~d}\)
Choose the correct answer from the options given below :JEE Mains 2025 Easy
More PYQs from JEE Mains
- If \(A\) denotes the sum of all the coefficients in the expansion of \(\left(1-3 x+10 x^2\right)^n\) and \(B\) denotes the sum of all the coefficients in the expansion of \(\left(1+x^2\right)^n\), then :JEE Mains 2024 Medium
- Let the tan gents drawn to the circle, \(x^2 + y^2 = 16\) from the point \(P(0, h)\) meet the \(x-\) axis at point \(A\) and \(B.\) If the area of \(\Delta APB\) is minimum, then \(h\) is equal toJEE Mains 2015 Hard
- The radius of the second Bohr orbit for hydrogen atom is .......... \(\mathop A\limits^o \) (Plank's const. \( h = 6. \times 10^{-34}\, Js\,;\) mass of electron \(= 9.1091 \times 10^{-31}\, kg\,;\) charge of electron \(e= 1.60210 \times 10^{-19}\, C\,;\) permittivity of vaccum \(\epsilon _0 = 8.854185 \times 10^{-12} \,kg^{-1} \,m^{-3} A^2\))JEE Mains 2017 Medium
- The resistivity of a \(0.8\,M\) solution of an electrolyte is \(5 \times 10^{-3}\,\Omega\,cm\). Its molar conductivity is \(.....\times 10^4 \Omega^{-1}\,cm ^2\,mol ^{-1}\). (Nearest integer)JEE Mains 2023 Medium
- If a circle passing through the point \((-1, 0)\) touches \(y-\) axis at \((0, 2)\), then the length of the chord of the circle along the \(x-\) axis isJEE Mains 2015 Hard
- In the following circuit, the reading of the ammeter will be : (Take Zener breakdown voltage \(=4 \mathrm{~V})\)
JEE Mains 2025 Medium