Hydrolysis of ozonide of 1-butene gives:(a) ethylene only(b) acetaldehyde and formaldehyde(c) propionaldehyde and formaldehyde(d) acetaldehyde only

The hydrolysis of ozonide of 1-butene involves ozonolysis, a reaction where ozone (O₃) reacts with an alkene to form an ozonide, which is then cleaved to give carbonyl compounds (aldehydes or ketones).

Step-by-Step Solution:
Structure of 1-butene:
1-butene is an alkene with the formula CH₂=CH-CH₂-CH₃.

Ozonolysis of 1-butene:
When 1-butene undergoes ozonolysis, the double bond (C=C) breaks and each carbon of the double bond forms a double bond with oxygen, creating two smaller fragments.

The structure of 1-butene:
CH₂=CH-CH₂-CH₃

Breaking the C=C bond during ozonolysis results in:

CH₂ (from CH₂=) becomes formaldehyde (HCHO).
CH-CH₂-CH₃ (from CH=CH₂) becomes propionaldehyde (CH₃CH₂CHO).
Hydrolysis of the ozonide:
The ozonide formed in the reaction undergoes hydrolysis, leading to the formation of formaldehyde (HCHO) and propionaldehyde (CH₃CH₂CHO).

Answer:
The correct product is propionaldehyde and formaldehyde, which corresponds to option (c).

So, the correct answer is:
(c) propionaldehyde and formaldehyde.