Redox Reactions

Match the List-I with List-II Choose the correct answer from the options given below:

1. A-III, B-IV, C-I, D-II
2. A-IV, B-I, C-II, D-III
3. A-II, B-III, C-I, D-IV
4. A-II, B-III, C-IV, D-I

Answer

(4) A-II, B-III, C-IV, D-I

Solution

A. Two substances (one an element, O2) combine; NCERT classifies the burning of methane as a combination reaction II.

B. One compound breaks into two components, Na and H2 decomposition III.

C. Ca displaces V from its oxide (metal displacement) IV.

D. Oxygen (–1 in H2O2) is reduced to –2 in H2O and oxidised to 0 in O2 disproportionation I.

A-II, B-III, C-IV, D-I

Answer: (4)