Q1. The Carbon Dioxide in the atmosphere, by volume, is

Q2. Diamond is an allotropic form of

Q3. The SI unit of Heat is

Q4. The good sources of Vitamin A are

Q5. The good sources of Vitamin B Complex are

Q6. The good sources of Vitamin C are

Q7. The good sources of iodine are

Q8. The gas, commonly known as laughing gas, is

Q9. The source of oxygen in photosynthesis is

Q10. The instrument used to measure wind speed is

Q11. The natural fats and oils are composed of

Q12. The energy value of food is measured in

Q13. Wind energy is the __________ energy.

Q14. Who is considered the founder of meteorology?

Q15. Water covers __________ of the Earth‘s surface.

Q16. In general, wind speed of 105–137 caused

Q17. Acid rain is mainly caused by emissions of __________ in the atmosphere.

Q18. About 50% of the Earth‘s crust, including the waters on the Earth and atmosphere, is

Q19. The fourth state of matter is

Q20. The device used to convert Alternate Current into Direct Current is called

Q21. In night, when photosynthesis is stopped, plants

Q22. During photosynthesis, plants

Q23. __________ are called the powerhouses of the cell.

Q24. Mitochondria contain their own supply of

Q25. The first chemical explosive, Gunpowder, is a mixture of