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Aldehydes, Ketones and Carboxylic Acid — Chemistry STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceChemistryAldehydes, Ketones and Carboxylic Acid2 Marks
Question
Which is Rosenmund reduction?
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Note: In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.
  1. Assertion and reason both are correct statements and reason is correct explanation for assertion.
  2. Assertion and reason both are correct statements but reason is not correct explanation for assertion.
  3. Assertion is correct statement but reason is wrong statement.
  4. Assertion and reason both are incorrect statements.
  5. Assertion is wrong statement but reason is correct statement.
Assertion: When methyl alcohol is added to water, boiling point of water increases.
Reason: When a volatile solute is added to a volatile solvent elevation in boiling point is observed.
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Benzaldehyde can be obtained from benzal chloride. Write reactions for obtaining benzalchloride and then benzaldehyde from it.
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Answer the following question:
Why a person suffering from high blood pressure is advised to take minimum quantity of common salt?
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Calculate the potential of hydrogen electrode in contact with a solution whose $pH$ is $10.$
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Write the reactions of Williamson synthesis of 2-ethoxy-3-methylpentane starting from ethanol and 3-methylpentan-2-ol.
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1.25 g of protein is present in 300 mL aqueous solution of a protein. The osmotic pressure of this solution at 300 K was found to be $2.50 \times 10^{-3}$ bar. Calculate the molar mass of protein. $[R=0.083 L$ bar $\operatorname{mol}^{-1} K^{-1}$ ].
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nitrobenzene → acetanilide
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