Unit Test Paper 2026-27 Science Class 10 Chapter 4. Carbon and its Compounds

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Unit Test paper 

Science - X

Chapter 4. Carbon and it's molecules

Timing : 1 Hours           Set - 1                         T. M - 20

One Mark questions: 

Q1. What substance acts as catalysts in hydronisation? 

Q2. In which form the micelle remain exist in solution of soap?

Q3. Write the name of two oxides which is produced by incomplete combustion of coal and petroleum. 

Q4. write the name of two elements that show the characteristics of hetroatoms.

Q5. What  do  you  mean  by  the  term  homologous  series ?

Two Marks Questions:

Q6. Distinguish between saturated and unsaturated compound . Which of them is more reactive.

Q7. What is catenation?  Write the names of the compounds. 

(i) CH₃ – CH₂ - Br 

(ii) 

Three marks Question:

Q8. Write three properties of covalent bond compounds.

Four Marks Questions:

Q9. Give regions;

(i) Corbon forms largest compound in nature.

(ii) Why do the size of atom increase to go up to down in group.

(iii) We should use vegetable oils instead of animal fats to cook food.

(iv) Hard water does not form scum treating with soap while detergent well.

Q10. An organic Compound A is widely used as a puesentative in pickles and has a molecular formula C₂ H₂ O_2. This compound reacts with ethanol to form a sweet smelling Compound B.

( ½ + 1 ½ + ½ +  1 ½ )

(i) Identify the Compound A.

(ii) Write the chemical equation with ethanol to from compound B.

(iii) How can we get compound A back from B.

(iv) Name the process and write equations?

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Exercise 1.1

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Exercise 1.1

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