1. Question: Ecology refers to –
answer: Organisms and their environment
2. Question: Which is the inert chemical gas present in the atmosphere?
Answer: Argon
3. Question: What is the material used for electroplating?
answer: Anode
4. Question: One horsepower = how many watts?
answer: 746 watts
5. Question: Who invented the barometer?
answer: Torricelli
6. Question: What is radar used for?
answer: Determines the position of an object
7. Question: What is a sound with only one frequency called?
answer: melody
8. Question: Which element is the lightest in the universe?
Answer: Hydrogen
9. Question: What is the chemical name of globber salt?
Answer: Sodium Sulphate
10. Question: What principle does the sprayer work on?
answer: Pascal
11. Question: Electromagnetic radiation is emitted by –
answer: from electrons
12. Question: Where is the speed of sound maximum?
Answer: Difficult
13. Question: What are the components of electric coil wire?
Answer: Nichrome
14. Question: Which principles are applied in hydraulic devices?
answer: Pascal's formula
15. Question: Which of the following metals has polymorphism?
Answer: Cobalt
16. Question: What is the largest unit of distance?
answer: Persec
17. Question: What is mass measured with?
Answer: With normal cotton
18. Question: What causes the rising or setting sun to appear red?
answer: distraction
19. Question: Which unit root is not unit?
answer: heat
20. Question: What is measured in light years?
answer: distance
21. Question: Which color of light is least deflected when passing through a prism?
answer: red
22. Question: If any liquid (which has boiling point) is mixed with impurities, their boiling point =
answer: increases
23. Question: Which type of light is mainly used in optical fiber?
Answer: Internal total reflection
24. Question: A non-metallic conductor is -
Answer: Graphite
25. Question: Which particle below is neutral?
Answer: Neoprene
26. Question: In which layer of the atmosphere are radio waves reflected?
answer: Ionosphere
27. Question: What is the reason for mixing chlorine in water?
answer: Kill germs
28. Question: Quicklime is -
answer: Calcium oxide
29. Question: What is the full name of the word TEL?
answer: Tetra ethyl lead
30. Question: What is the mixture of nitrogen and carbon-monoxide called?
Answer: Producer gas
