Q1. Water is a universal solvent for what reactions?

Q2. Which part of the camera is analogue to the retina in the human eye?

Q3. Radioactivity was first discovered by?

Q4. In human body Gall Bladder is part of the _________ system.

Q5. The working principle of a washing machine is?

Q6. The approximate intensity level of the sound which can caused damage to the ear drum is _____?

Q7. Which of the following blood vessels carry blood from the human body to the heart?

Q8. In which system of units, gas bills are charged?

Q9. A slow-running pendulum clock can be speeded up by?

Q10. The major component of honey is:

Q11. The property by virtue of which metals can be beaten into thin sheets is known as:

Q12. Lemon is a good source of vitamin:

Q13. What is “Acoustics”:

Q14. The main chemical substance present in the bones and teeth of animals is:

Q15. When a person enters a dark room from bright light he is not able to see clearly for little while because ______.

Q16. Which gas is commonly used in balloons and airships?

Q17. Which one of the following units represents the largest amount of energy?

Q18. Water vapour beyond the dew point result in

Q19. Which one of the following units represents the largest amount of energy?

Q20. T.V. transmission cannot cover a very large area because _____.

Q21. Which one of the following would give the highest energy per gram?

Q22. The cow's milk contains how much amount of water in terms of percentage?

Q23. In BTU system, one BTU is equal to:

Q24. Acid rain contains high levels of _____?

Q25. Most of the ozone in the atmosphere is concentrated in the _____.