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USHA PUBLICATION-PREVIOUS YEAR QUESTION 2020-PREVIOUS YEAR QUESTION
- What is the action of chlorine with (i) cold and dilute NaOH and (ii) ...
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- Discuss Reimer-Tiemann reaction.
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- Discuss the struchure of [Co(NH3)6]^(3+) ion on the basis of valence b...
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- Elucidate the differences between soaps and detergents.
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- Answer any seven questions of the following Discuss van Arkel Boer m...
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- The rate constants ofa reaction at 500 K and 700 K are 0.025 sec^-1 an...
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- Write a note on hydrogen-oxygen fuel cell.
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- What do you mean by biodegradale and non biodegradable polymers ? Give...
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- An organic compound having molecular formula C3H7Br on treatment with ...
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- State Raoult's law. How is the molecular mass of a solute determined f...
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- A solution contains 72% water d 28% methyl alcohol. Calculate the mole...
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- How is acetic acid prepared from methyl magnesium bromide ?
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- An acid is (i) reduced by lithium aluminium hydride (ii) treated with ...
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- Name four factors affccting adsorption gases by solids.
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- What are enzyme catalysts ? Give a reaction involving an enzyme cataly...
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- What are oil in water and water in oil type of emulsions ? Give one ex...
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- Starting from nitrobenzene how will you prepare benzene diazonium chlo...
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- Which of the following electrolytes is most effective in the coagulati...
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- Sulphur dioxide gas does not act as
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- The compound that reduces Tollens' reagent is
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