CBSE Guess > Papers > Important Questions > Class X > Science > Science By Mr. Vidur Science 1. What are the common systems for harnessing ocean wave energy? 2. How is hydrogen converted into helium? 3. Why are plants green? 4. What is cause of peptic ulcer? 5. What is EEG? For what it is used? 6. What is callus and tissue culture? 7. What is Benedict’s reagent? 8. What is zodiac and elliptic 9. Define the following terms:
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