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UNITED BOOK HOUSE-HIGHER SECONDARY EXAMINATION 2019-EXERCISE
- Write balanced equations for the reactions involved in the extraction ...
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- Which type of ores is concentrated by froth floatation process?
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- What is thermit mixture? Mentain one use of it.
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- Which of the following are coloured in aqueous solution? Give rea-sons...
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- Which of the following oxides are amphoteric? Mn2O7,CrO3,CrO3,V2O5
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- Explain why most of the Cu (1) compounds are unstable in aqueous solut...
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- What happens when MnO(4)^(2-) ion is kept in acid medium? Write bal-an...
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- Write R/S configuration of
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- Write structural formula of A for the following reaction:
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- Distinguish between propanone and pentan-3-one by a suitable chemi-cal...
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- Write the structural formula of A, B, C, D in the following reactions:
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- Write equation of the following conversion . Salicylic and aspirin.
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- Mention one use of Lucas reagent.
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- Convert aniline to fluorobenzene.
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- Write structural formula of the compounds A to D.
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- An organic compound A (C3H8O) on treatment with Cu dust at 573 K gives...
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- The followign compound is an example of peptide Write. Zwitterion s...
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- Write equation for the reaction of glucose with periodic acid.
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- Draw the graph of half-life period (t(1/2) versus initial concentratio...
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- The rate of a reaction at 200 K is 10 times less than the rate of the ...
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