Which of the following is not a vector quantity?
1). Acceleration
2). Electric current
3). Force
4). Velocity
1. When hot-water is sprinkled on a hotter glass tumbler, it breaks because
2. The "greenhouse effect" refers to:
4. The absolute zero is a temperature at which ________
5. Weight of a body is maximum at the:
6. Isotopes of an element contain
7. Mud houses are cooler in summers and warmer in winters as compared to brick houses because
8. An athlete runs before long jump to get advantage on
9. Which layer of the earth's atmosphere reflect back the radio waves to the earth's surface
10. Which of the following supports particle nature of photons ?