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12th Odisha Board
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Formaldehyde when treated with conc. KOH gives methanol and potassium formate. The reaction is known as

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Important Questions on Aldehydes and Ketones

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12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Chemistry Volume-2>Chapter 18 - Aldehydes and Ketones>ADDITIONAL QUESTIONS>Q 22
Formalin is an aqueous solution of
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12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Chemistry Volume-2>Chapter 18 - Aldehydes and Ketones>ADDITIONAL QUESTIONS>Q 23
Hexamethylenetetramine is used as
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12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Chemistry Volume-2>Chapter 18 - Aldehydes and Ketones>ADDITIONAL QUESTIONS>Q 24
Aldol condensation will not occur in which of the following compounds.
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12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Chemistry Volume-2>Chapter 18 - Aldehydes and Ketones>ADDITIONAL QUESTIONS>Q 25
Propyne on hydrolysis in presence of HCI and HgSO4 gives
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12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Chemistry Volume-2>Chapter 18 - Aldehydes and Ketones>ADDITIONAL QUESTIONS>Q 26
When anhydrous acetaldehyde is brought in contact with a drop of conc.H2SO4  at ordinary temperature, the following compound is formed.
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12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Chemistry Volume-2>Chapter 18 - Aldehydes and Ketones>ADDITIONAL QUESTIONS>Q 27
The reaction between formaldehyde and caustic soda to produce methyl alcohol is known as
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12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Chemistry Volume-2>Chapter 18 - Aldehydes and Ketones>ADDITIONAL QUESTIONS>Q 28
Rosaniline hydrochloride decolourised by SO2 is called
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12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Chemistry Volume-2>Chapter 18 - Aldehydes and Ketones>ADDITIONAL QUESTIONS>Q 29
Acetaldehyde reacts with phosphorus pentahalide to produce