The products of light reaction in photosynthesis are: 
1. ATP, NADPH and \(\text{O}_2\)
2. ATP, NADPH, \(\text{O}_2\) and \(\text{H}_2 \text{O}\)
3. ATP, NADPH and \(\text{H}_2 \text{O}\)
4. ATP, NADPH and \(\text{CO}_2\)

In light reaction, plastoquinone facilitates the transfer of electrons from:

1. Cytb₆f complex to PS-I

2. PS-I to NADP⁺

3. PS-I to ATP synthase

4. PS-II to Cytb₆f complex