1. Marsh gas is
a
2. Where was the yo-yo invented?
b
3. THE FIRST METAL MADE BY MAN ?
b
4. Which mineral India imports largely?
a
5. Who invented the Spinning Jenny?
d
6. What groovy item was invented by Englishman Edward Craven Walker in 1963?
d
7. Who was the founder of the Capital city of Agra?
b
8. Unit of loudness of sound ?
a
9. Who invented Gramophone?
b
10. In which of the following activities silicon carbide is used?
a
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