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Showing posts with label PRACTICAL ORGANIC. Show all posts
Showing posts with label PRACTICAL ORGANIC. Show all posts
Thursday, June 24, 2021

How to distinguish primary , secondary and tertiary alcohols ?

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Primary, secondary and tertiary alcohols can distinguish by Victor-Meyer's test and Lucas test which are given as: Related Q...
Tuesday, February 4, 2020

Both glucose and fructose are reducing sugars but sucrose is non-reducing in nature. Why?

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Glucose and fructose are reducing sugars as they reduce Fehling's solution and Tollen's reagent. In aqueous solution these sacc...
Wednesday, January 29, 2020

What is Dunstan's test , How can it use for test Glycerol ?

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When phenolphthalein is added to dilute cold solution of borax, a pink colour is produced. When glycerol is mixed in it, in cold, the co...

Fructose contains a keto group, yet it reduces Fehling solution and Tollen's reagent. Why ?

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Fructose although contains a ketone group yet it acts as a reducing sugar. This is explained by the formation of glucose from fr...
Tuesday, January 28, 2020

What is lucas reagent and where is lucas reagent uses ?

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Anhydrous zinc chloride and concentrate HCl is known as Lucas reagent and it is use for distinguish between primary, secondary and te...

What is Victory-Meyer's test and how can distinction between 1°, 2° and 3° alcohols by this ?

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Victory- Meyer's test use for distinction of  1°, 2° and 3° alcohols which include a series of reagent as given below : ...

Benzaldehyde gives a positive test with Tollen's reagent but not with Benedict's and Fehling's solution. Comment why?

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Benedict's solution (Cu +2 citric acid + base) and Fehling's solution (Cu +2  tartaric acid + base) are weaker oxidising agent...

Aromatic amines are lesser basic than aliphatic amines.why ?

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Aliphatic amines are more basic in nature than aromatic amines because In aliphatic amines the electron density around  N atom i...