Senior Quiz crossword

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Across
  1. 1. fastest land mammal
  2. 5. SI unit of pressure
  3. 6. smallest prime number
  4. 7. staple food of India
  5. 8. gas that makes up 70% of our atmosphere
  6. 10. capital of west bengal
Down
  1. 2. instrument used to measure temperature
  2. 3. branch of physics that deals with heat
  3. 4. second colour in VIBGYOR
  4. 9. 20th element