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Two children from Tamil Nadu holding a Samacheer Kalvi textbook. Samacheer Kalvi or Tamil Nadu Uniform System of School Education or Equitable education system is a School Education Department of Government of Tamil Nadu, India programme to integrate the various school educational systems within the state.
Hindi continued to be a second language alternative for high school, prior to a syllabus revision that witnessed its withdrawal. Currently, the Samacheer Kalvi (Equity Education) system is adhered to. Public Examinations for Classes X and XII are conducted and the answer booklets are evaluated by select staff assigned by the Government of Tamil ...
A primary school book published under Sarva Shiksha Abhiyan Punjab. Sarva Shiksha Abhiyan (Hindi: सर्व शिक्षा अभियान, lit. 'Education for all campaign'), or SSA, is an Indian Government programme aimed at the universalisation of Elementary education "in a time bound manner", the 86th Amendment to the Constitution of India making free and compulsory education to ...
The Earth captured in the Pacific Ocean side. The hydrosphere (from Ancient Greek ὕδωρ (húdōr) 'water' and σφαῖρα (sphaîra) 'sphere') [1] [2] is the combined mass of water found on, under, and above the surface of a planet, minor planet, or natural satellite.
The Birch reduction is an organic reaction that is used to convert arenes to 1,4-cyclohexadienes.The reaction is named after the Australian chemist Arthur Birch and involves the organic reduction of aromatic rings in an amine solvent (traditionally liquid ammonia) with an alkali metal (traditionally sodium) and a proton source (traditionally an alcohol).
The discovery of trichloroacetic acid by Jean-Baptiste Dumas in 1839 delivered a striking example to the slowly evolving theory of organic radicals and valences. [12] The theory was contrary to the beliefs of Jöns Jakob Berzelius , starting a long dispute between Dumas and Berzelius.
The radiant exitance (previously called radiant emittance), , has dimensions of energy flux (energy per unit time per unit area), and the SI units of measure are joules per second per square metre (J⋅s −1 ⋅m −2), or equivalently, watts per square metre (W⋅m −2). [2]
The oldest system, in many respects the basis of the classical one, is known from texts of about 1000 BCE. It divides an approximate solar year of 360 days into 12 lunar months of 27 (according to the early Vedic text Taittirīya Saṃhitā 4.4.10.1–3) or 28 (according to the Atharvaveda, the fourth of the Vedas, 19.7.1.) days. The resulting ...