Q. The number of following diene(s) that undergo Diels-Alder reaction with methyl acrylate is Ans: The number of following diene(s) that undergo Diels-Alder reaction with methyl acrylate is 5 Solution: Diels- Alder Reaction is a pericyclic chemical reaction between substituted alkenes or Dienophiles and conjugated dienes. Here, all the cis structures will undergo Diels- Alder Reaction […]
Q. Among the following compounds, the number of compounds that DO NOT exhibit optical activity at room temperature is Ans: 4 Among the following compounds, the number of compounds that DO NOT exhibit optical activity at room temperature is 4.
Q. In the following reaction, the stereochemistry of the major product is predicted by the (A) Cram’s model (B) Cram’s chelation model (C) Felkin model (D) Felkin-Anh model Ans: Cram’s chelation model
In the following reaction, the stereochemistry of the major product is predicted by the Read More »
Q. The Woodward-Hoffmann condition to bring out the following transformation is (A) ∆, conrotatory (B) ∆, disrotatory (C) hν, disrotatory (D) hν, conrotatory Ans: hν, conrotatory
The Woodward-Hoffmann condition to bring out the following transformation is Read More »
Q. Consider the following phase diagram of CO2 (not to scale). At equilibrium, the INCORRECT statement is: A. At 200 K, on increasing the pressure from 1 to 50 atm, CO2 gas condenses to liquid. B. It is not possible to obtain liquid CO2 from gaseous CO2 below 5.11 atm. C. Both liquid and gas
Q. Micelle formation is accompanied by the (A) decrease in overall entropy due to ordering. (B) increase in overall entropy mostly due to increase in solvent entropy. (C) increase in overall entropy mostly due to increase in solute entropy. (D) increase in overall entropy and decrease in enthalpy. Ans: increase in overall entropy mostly due
Daily Quiz on Current Affairs 3 August 2023 is very important for Competitive Exams like SSC, Railway, RRB, Banking, IBPS, PSC, UPSC, etc. Our Gkseries team have composed these Current Affairs Quizzes from Newspapers like The Hindu and other competitive magazines.
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![The Do value of [Ni(H2O)6]2+ is 8500 cm–1. The Do values for [NiCl6]4– and [Ni(NH3)6]2+ compared to [Ni(H2O)6]2+ are](https://www.gkseries.com/blog/wp-content/uploads/2023/08/The-Do-value-of-NiH2O62-is-8500-cm–1.-The-Do-values-for-NiCl64–-and-NiNH362-compared-to-NiH2O62-are-1024x536.jpg)
Q. The Do value of [Ni(H2O)6]2+ is 8500 cm–1. The Do values for [NiCl6]4– and [Ni(NH3)6]2+ compared to [Ni(H2O)6]2+ are (A) higher and lower, respectively. (B) lower and higher, respectively. (C) higher in both complex ions. (D) lower in both complex ions. Ans: lower and higher, respectively.
Q. Among the following carbon allotropes, the one with discrete molecular structure is (A) Diamond (B) a-Graphite (C) b-Graphite (D) Fullerene Ans: Fullerene Solution: Allotropes of carbon like Diamond, Graphite, and Fullerene show crystalline structures. Fullerene has infinite lattices of Diamond and Graphite. It is formed by nanotubes forming the discrete molecular structure.
Among the following carbon allotropes, the one with discrete molecular structure is Read More »
Current Affairs is the most important area in all competitive exams. But the difficulty level is very high. That’s why; many aspirants get confused, how to select Current Affairs for Preparation of Competitive Examination? In this Post, Daily Current Affairs 3 August 2023, we have tried to cover each and every point and also included all important facts from
3 August 2023 Current Affairs – The Day’s Top News | GKSERIES Read More »
