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Nerolidol, also known as peruviol and penetrol, is a naturally occurring sesquiterpene alcohol. A colorless liquid, it is found in the essential oils of many types of plants and flowers. [ 1 ] There are four isomers of nerolidol', which differ in the geometry about the central double bond and configuration of the hydroxyl-bearing carbon, but ...
JP-10 (Jet Propellant 10) is a synthetic jet fuel, specified and used mainly as fuel in missiles. Being designed for military purposes, it is not a kerosene based fuel. Developed to be a gas turbine fuel for cruise missiles , [ 1 ] it contains mainly exo-tetrahydrodicyclopentadiene (exo-THDCPD) with some endo-isomer impurity. [ 2 ]
All India Secondary School Examination, commonly known as the class 10th board exam, is a centralized public examination that students in schools affiliated with the Central Board of Secondary Education, primarily in India but also in other Indian-patterned schools affiliated to the CBSE across the world, taken at the end of class 10. The board ...
In 2021, due to the COVID-19 crisis, the secondary school exams for class X and XII had been cancelled. [9] In Academic Year (2021-2022) Central Board of Secondary Education (CBSE) Announced That Board Examinations of Class 10th and 12th will be Will be conducted in two-terms, first term in November-December 2021 and second term in April-March ...
Pentaerythritol was first reported in 1891 by German chemist Bernhard Tollens and his student P. Wigand. [5] It may be prepared via a base-catalyzed multiple-addition reaction between acetaldehyde and 3 equivalents of formaldehyde to give pentaerythrose (CAS: 3818-32-4), followed by a Cannizzaro reaction with a fourth equivalent of formaldehyde to give the final product plus formate ion.
Under the UN Dangerous Goods classification, explosive hazard Divisions are awarded using the UN Manual of Criteria and Tests, by following the process flow chart '10.3 Procedure for assignment to a division of the class of explosives' and conducting the appropriate tests either UN series 5, series 6, or series 7 tests. [3]
Secondary School Certificate is a public exam for classes 9 and 10 separately. Class 9 exam is called SSC part-1 and class 10 exam is called SSC part-2. This exam is conducted by government boards, officially known as Boards of Intermediate and Secondary Education, or simply BISE.
A fire class is a system of categorizing fire with regard to the type of material and fuel for combustion.Class letters are often assigned to the different types of fire, but these differ between territories; there are separate standards for the United States (NFPA 10 Chapter 5.2.1-5.2.5), Europe (DIN EN2 Classification of fires (European Standard) ISO3941 Classification of fires ...
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