Option 1: Both the statements are individually true and Statement II is the correct explanation of Statement I.

This option suggests that both statements are true and that Statement II provides the correct explanation for Statement I. However, this is not the correct option because Statement II is false.

Option 2: Both the statements are individually true but Statement II is not the correct explanation of Statement I.

This option suggests that both statements are true, but Statement II does not explain Statement I correctly. This is the correct option because Statement I is true, as oxygen gas is indeed easily produced at a faster rate by heating a mixture of potassium chlorate and manganese dioxide than heating potassium chlorate alone. However, Statement II is false because manganese dioxide acts as a positive catalyst, not a negative catalyst.

Option 3: Statement I is true but Statement II is false.

This option states that Statement I is true, which is correct. Oxygen gas is indeed easily produced at a faster rate by heating a mixture of potassium chlorate and manganese dioxide. However, Statement II is false because manganese dioxide acts as a positive catalyst, not a negative catalyst.

Option 4: Statement I is false but Statement II is true.

This option states that Statement I is false, which is incorrect because Statement I is true