HARD
10th CBSE
IMPORTANT
Earn 100

What are detergents chemically? Why are they more effective than soaps for cleansing action? How can detergent molecules be altered to make them biodegradable?

Important Questions on Carbon and its Compounds

MEDIUM
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 4 - Carbon and its Compounds>EXERCISE 4C>Q 5
Write one example each to illustrate the following:
(i) Fermentation
(ii) Esterification
MEDIUM
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 4 - Carbon and its Compounds>EXERCISE 4C>Q 6
(a) Write the chemical equation representing the preparation reaction of ethanol from ethene.
(b) Name the product obtained when ethanol is oxidised by either chromic anhydride or alkaline potassium permanganate.
(c) Give an example of an esterification reaction.
MEDIUM
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 4 - Carbon and its Compounds>EXERCISE 4C>Q 7
What happens when ethanoic acid reacts with (i) magnesium, (ii) sodium carbonate, and (iii) sodium hydroxide? Write the necessary chemical equation in each case.
MEDIUM
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 4 - Carbon and its Compounds>EXERCISE 4C>Q 8
What happens when ethanol reacts with (i) sodium (ii) chromic anhydride and (iii) alkaline potassium permanganate solution? Write the necessary chemical equations for the reactions involved in the above cases.
MEDIUM
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 4 - Carbon and its Compounds>EXERCISE 4C>Q 9
An organic compound “A” is an essential constituent of wine and beer. Oxidation of “A” yields an organic acid ‘B’ which is present in vinegar. Name the compounds “A” and “B” and write their structural formula. What happens when “A” and “B” react in the presence of an acid catalyst? Write the chemical equation for the reaction.
MEDIUM
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 4 - Carbon and its Compounds>EXERCISE 4C>Q 10
An ester has the molecular formula C4H8O2. Write its structural formula. What happens when this ester is heated in the presence of sodium hydroxide solution? Write the balanced chemical equation for the reaction and name the products. What is a saponification reaction?
MEDIUM
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 4 - Carbon and its Compounds>EXERCISE 4C>Q 11
An organic compound “”X is an essential constituent of wine and beer. “X” is responsible for the intoxication caused by these drinks. Oxidation of “X” yields an organic acid “Y” which is present in vinegar. Name the compounds “X” and “Y” and write their structural formula.
MEDIUM
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 4 - Carbon and its Compounds>EXERCISE 4C>Q 12

Describe along with chemical equations, what happens when

(i) Ethene reacts with bromine water

(ii) Ethanol burns in air

(iii) Ethanoic acid reacts with ethanol in the presence of sulphuric acid.