The density of the liquid when heated
1). decreases
2). increases
3). does not change
4). may increase of decrease depending on pressure
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1. Which among the following types of coal produces most heat per unit?
2. Siphon will fail to work if:
3. Cryogenics is a science dealing with
4. Which phenomena shows the particle nature of light?
5. The different colours of different stars are due to the variation of
6. According to the theory of relativity which of the following alt ways remains constant ?
7. Persistence of vision is the principle behind
9. In radio-communication, the signals emitted by transmitting antenna are reflected on