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Why an iron nail floats on mercury but sinks in water?

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Important Questions on Physics

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Lucent's General Science>Chapter 1 - Physics>Objective Questions>Q 34
Which of the following radioisotopes is used to treat blood cancer (leukemia)?
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Lucent's General Science>Chapter 1 - Physics>Objective Questions>Q 35
Which one among the following would expand the most on being heated?
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Lucent's General Science>Chapter 1 - Physics>Objective Questions>Q 36
If two pieces of ice are mutually pressed to each other then these pieces stick because :
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IMPORTANT
Lucent's General Science>Chapter 1 - Physics>Objective Questions>Q 38
The phenomenon of electromagnetic induction implies a production of induced :
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IMPORTANT
Lucent's General Science>Chapter 1 - Physics>Objective Questions>Q 39
A closed vessel containing some gas at atmospheric pressure and room temperature is placed in a fast moving train. The temperature of the gas will :
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Lucent's General Science>Chapter 1 - Physics>Objective Questions>Q 40
The method of age determination called radioactive uranium dating can not be used to determine the age of:
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Lucent's General Science>Chapter 1 - Physics>Objective Questions>Q 41
Light waves projected on oil surface show seven colours due to the phenomenon of :
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IMPORTANT
Lucent's General Science>Chapter 1 - Physics>Objective Questions>Q 42
The cyclist (man) leans or bends himself around a turning because :