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CHHAYA PUBLICATION-PREVIOUS YEAR QUESTION PAPER 2016-WBCHSE 2016 SECTION II ( GROUP B)
- In two compounds of hydrogen and oxygen , hydrogen present in 42.9 % ...
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- Mention Heisenberg's uncertainty principle . Calculate the uncertainty...
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- If the energy of 1st Bohr's orbit is -13.58 eV of a H-atom , calculate...
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- Explain the phenomenon : " When phenolphthalein is added to aqueous so...
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- Between CH(3) CO OH and HCOOH which one is most acidic and why ?
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- Name IUPAC name of HOH(2)C- CHOH - CH(2)OH
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- Name IUPAC name of CH(3) C Cl(2) - CH(2) - COOH
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- What is BOD ? Write one harmful effect on it .
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