Chemistry-
The following reaction is known as 
Chemistry-General
- Perkin reaction
- Gattermann reaction
- Kolbe reaction
- Gattermann-aldehyde reaction
Answer:The correct answer is: Gattermann-aldehyde reactionIn the presence of anhydrous
phenol form salicyladehyde. It is Gattermann-aldehyde reaction.
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chemistry-
At 530 K, glycerol reacts with oxalic acid to produce
Oxalic acid on reaction with glycerol at 530K temperature furnishallyl alcohol.

At 530 K, glycerol reacts with oxalic acid to produce
chemistry-General
Oxalic acid on reaction with glycerol at 530K temperature furnishallyl alcohol.

chemistry-
On heating glycerol with conc.
a compound is obtained which has bad odour. The compound is:
On heating glycerol with conc.
a compound is obtained which has bad odour. The compound is:
chemistry-General
chemistry-
The conversion of m-nitrophenol to resorcinol involves respectively
The conversion of m-nitrophenol to resorcinol involves respectively
chemistry-General
chemistry-
The alcohol that produces turbidity immediately with
at room temperature
The tertiary alcohol reacts immediately with Lucas reagent producing turbidity. The secondary alcohol gives turbidity within 5-10 min and primary alcohol doesn’t give turbidity at all at room temperature. In the given alternates, 2-hydroxy-2-methyl propane is
The alcohol that produces turbidity immediately with
at room temperature
chemistry-General
The tertiary alcohol reacts immediately with Lucas reagent producing turbidity. The secondary alcohol gives turbidity within 5-10 min and primary alcohol doesn’t give turbidity at all at room temperature. In the given alternates, 2-hydroxy-2-methyl propane is
chemistry-
On conversion into the Grignard reagent followed by treatment with absolute ethanol, how many isomeric alkyl chlorides would yield 2-methylbutane?
Thus,
On conversion into the Grignard reagent followed by treatment with absolute ethanol, how many isomeric alkyl chlorides would yield 2-methylbutane?
chemistry-General
Thus,
chemistry-
What is formed when glycerol reacts with excess of HI?
When glycerol reacts with HI
iodide is obtained

What is formed when glycerol reacts with excess of HI?
chemistry-General
When glycerol reacts with HI
iodide is obtained

chemistry-
An alcohol on alk.
oxidation gives first acetone and on further oxidation acetic acid. It is:
An alcohol on alk.
oxidation gives first acetone and on further oxidation acetic acid. It is:
chemistry-General
chemistry-
Methanol and ethanol can be distinguished by the following:
Methanol and ethanol can be distinguished by the following:
chemistry-General
chemistry-
How many structural isomers are known for 
4 alcohols (butan-1-ol; butan-2-ol; 2-methyl butan-1-ol; 2-methyl butan-2-ol) and 3 ethers (diethyl ether, methyl-propyl ether and methyl isopropyl ether).
How many structural isomers are known for 
chemistry-General
4 alcohols (butan-1-ol; butan-2-ol; 2-methyl butan-1-ol; 2-methyl butan-2-ol) and 3 ethers (diethyl ether, methyl-propyl ether and methyl isopropyl ether).
chemistry-
General formula for alcohols is:
General formula for alcohols is
Primary alcohols have
Secondary Alcohols have
and tertiary alcohols have 
General formula for alcohols is:
chemistry-General
General formula for alcohols is
Primary alcohols have
Secondary Alcohols have
and tertiary alcohols have 
chemistry-
Ethanol is more soluble in water but ether is less soluble because:
Both shows H-bonding, however the increase in hydrophobic character (due to two alkyl groups in ether), the H-bonding weakens.
Ethanol is more soluble in water but ether is less soluble because:
chemistry-General
Both shows H-bonding, however the increase in hydrophobic character (due to two alkyl groups in ether), the H-bonding weakens.
chemistry-
Which of the following compounds is weakest acid?
Electron withdrawing groups (like
increase the acidity of phenols by stabilising corresponding phenoxide ion. The effect of
group will beminimum at m-position due to lack of increased delocalisation of electrons in it. Hence, m-nitrophenol is the weakest acid among these.
Which of the following compounds is weakest acid?
chemistry-General
Electron withdrawing groups (like
increase the acidity of phenols by stabilising corresponding phenoxide ion. The effect of
group will beminimum at m-position due to lack of increased delocalisation of electrons in it. Hence, m-nitrophenol is the weakest acid among these.
chemistry-
The acidic character of
alcohols,
and
is of the order
Alcohols are more acidic than alkynes but less acidic than water thus, the correct order of acidity is 
The acidic character of
alcohols,
and
is of the order
chemistry-General
Alcohols are more acidic than alkynes but less acidic than water thus, the correct order of acidity is 
physics-
Assertion :We cannot produce a real image by plane or convex mirrors under any circumstances
Reason : The focal length of a convex mirror is always taken as positive
Assertion :We cannot produce a real image by plane or convex mirrors under any circumstances
Reason : The focal length of a convex mirror is always taken as positive
physics-General
chemistry-
An organic compound reacts with
to give. The compound with sodium metal gives 
An organic compound reacts with
to give. The compound with sodium metal gives 
chemistry-General