1. Aryans emerged on the Indian scene sometimes between

2. Where is the Sahara Desert?

3. World,S tallest freestanding structure is

4. A galvanometer can be converted into a voltmeter by connecting 

5. What is increased in a step-down transformer

6. Which one of the following is the most abundant metallic element 

7. Which one of the following elements is used as a catalyst in the dehydration of vegetable oils

8. Permanent hardness of water be removed by the addition of 

9. The field of view is maximum when the image is formed by reflection at

10. A galvanometer can be converted into an ammeter by connecting a