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Those who wish to adopt the textbooks are required to send a request to NCERT, upon which soft copies of the books are received. The material is press-ready and may be printed by paying a 5% royalty, and by acknowledging NCERT. [11] The textbooks are in color-print and are among the least expensive books in Indian book stores. [11]
Fifteen radioisotopes have been characterized, ranging from 11 O to 28 O. [62] [63] The most stable are 15 O with a half-life of 122.24 seconds and 14 O with a half-life of 70.606 seconds. [60] All of the remaining radioactive isotopes have half-lives that are less than 27 seconds and the majority of these have half-lives that are less than 83 ...
Chemistry is the scientific study of the properties and behavior of matter. [1] It is a physical science within the natural sciences that studies the chemical elements that make up matter and compounds made of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during reactions with other substances.
This article needs attention from an expert in chemistry. The specific problem is: Incomplete list. WikiProject Chemistry may be able to help recruit an expert.
Oh My, Such Good Apples. [33] Oh My Stars, Green Apples. Oh My, Such Good Apple Pie, Sweet As Sugar. [34] [35] Oh My Stars, Go Ahead Please [25] OMSGAPS - is a phonetic word for the first letters of the first seven dicarboxylic acids above in sequence can be said as below. Oh My Sir, Give A Party Soon.
At least 35 children were killed and six others critically injured in a crowd crush at a funfair in the Nigerian city of Ibadan on Wednesday, police said.
The solution has 1 mole or 1 equiv Na +, 1 mole or 2 equiv Ca 2+, and 3 mole or 3 equiv Cl −. An earlier definition, used especially for chemical elements , holds that an equivalent is the amount of a substance that will react with 1 g (0.035 oz) of hydrogen , 8 g (0.28 oz) of oxygen , or 35.5 g (1.25 oz) of chlorine —or that will displace ...
The latest structure includes two sections, i.e. A and B, in all four subjects, namely Physics, Chemistry, Botany, and Zoology. Section A comprises 35 mandatory questions, while Section B contains 15 questions, out of which 10 questions are to be answered, leading to a total of 200 questions, with 180 questions that can be answered. [18]