Step 1: Recall tidal classifications.
- Semidiurnal tides: Two high tides and two low tides per day.
- Diurnal tides: One high tide and one low tide per day.
- Mixed tides: Characteristics of both, unequal heights.
Step 2: Tides on the west coast of India.
- The Arabian Sea along the west coast of India mostly experiences semidiurnal tides.
- In some locations, tides show variation in successive highs/lows → mixed type.
Final Answer:
\[
\boxed{\text{(B) Semidiurnal and Mixed}}
\]