14) C

1 – Wrong

T is less reactive than M. This means that it will not displace M to form TCl₂.

2 – Correct

J is more reactive than M. This means that it will displace M to form JSO₄.

3 – Correct

Q is more reactive than T. This means that it will displace T to form QO.

4 – Correct

J is more reactive than Q. This means that it will displace Q to form JO.

5 – Wrong

T is less reactive than J. This means that it will not displace J to form TSO₄.

6 – Wrong

Q is less reactive than M. This means that it will not displace M to form QO.

Reactions 4, 5 and 6 can occur. Hence C is correct.