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Subjective-
S.L Questions Ma Skill
No. rk
Q.1 Why do alkanes burn with blue flame? [CBSE2013] 1 R
Q.2 Name the process by which unsaturated fats arechanged into 1 u
saturated fats.
Q.3 The carbon compounds X and Y have the molecular formula C 4H 3 3 R+
and C 5H 12 respectively. Which one of these is most likely to show A
addition reaction? Justify your answer. Also give chemical equations
to explain the process of addition reaction in this case.
[CBSE 2017]
Q.4 What is an oxidising agent? What happens when oxidising 3 U+
agent is added to propanol? Explain with the help of a chemical A
equation. [CBSE 2016]
Q.5 a. Give a chemical test to distinguish between saturated and 5 HO
unsaturated hydrocarbons. T
b. Name the products formed when ethane burns in air. Write the
balanced chemical equation for the reactions showing two types of
energies liberated.
c. Why is reaction between methane and chlorine in presence of
sunlight is considered a substitution reaction.
[CBSE 2016]
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