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ACCURATE PUBLICATION-BOARD PAPER MARCH - 2019-QUESTIONS
- Write two differences between physical adsorption and chemical adsorpt...
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- Define Emulsion
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- Write Hell Volhard Zelinsky reaction.
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- Why are the boiling points of carboxylic acids higher than the corresp...
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- Explain why aldehydes are more reactive than ketones towards nucleophi...
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- A face centered cubic element (atomic mass =60) has edge length of 400...
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- Give one difference between crystalline and amorphous solids.
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- An element having a density 11.2"g cm"^(-3) forms a fcc lattice with e...
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- Define unit cell and paramagnetic substance.
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- Write the following reaction: Wurtz Fittig Reaction
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- True/False- Stems absorb water and minerals from the soil.
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- True/False- The plant gets nitrogen from air.
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- Why solubility of Haloalkanes in water is very low ?
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- Give one use of freon.
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- Why nitrogen is important for the plants?
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- Give the mechanism of substitution nucleophilic bimolecular, SN^2 reac...
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- Define Optical activity.
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- Why SF6 is known but SH6 is not known ?
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- From HF and Hl which is more acidic and why ?
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- Give preparation of XeF6 and XeOF2.
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