Question

Match List I with List II:

List I		List II
A	P wave	I	Heart muscles are electrically silent.
B	QRS complex	II	Depolarisation of ventricles.
C	T wave	III	Depolarisation of atria.
D	T-P gap	IV	Repolarisation of ventricles.

Choose the correct answer from the options given below:

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

Answer 1

The Correct Option is B

To solve the matching problem between List I and List II, we need to understand the terms associated with an ECG (Electrocardiogram).

• P wave indicates the depolarisation of the atria, which corresponds to option III.
• QRS complex corresponds to the depolarisation of the ventricles, matching with option II.
• T wave is associated with the repolarisation of the ventricles, linking to option IV.
• T-P gap signifies a period when heart muscles are electrically silent, which matches with option I.

Therefore, the correct matching is:

List I	List II
A - P wave	III - Depolarisation of atria
B - QRS complex	II - Depolarisation of ventricles
C - T wave	IV - Repolarisation of ventricles
D - T-P gap	I - Heart muscles are electrically silent

Thus, the correct answer is: A-III, B-II, C-IV, D-I.

Answer 2

Matching ECG Components with Their Functions:

• A. P wave – Corresponds to the depolarisation of the atria. 
  Matches with: III. Depolarisation of the atria.
• B. QRS complex – Corresponds to the depolarisation of the ventricles. 
  Matches with: II. Depolarisation of the ventricles.
• C. T wave – Corresponds to the repolarisation of the ventricles. 
  Matches with: IV. Repolarisation of the ventricles.
• D. T-P gap – Represents a period when heart muscles are electrically silent. 
  Matches with: I. Electrically silent period.

Thus, the correct answer is (2) A-III, B-II, C-IV, D-I.