What is the current upper limit for collateral-free

Which of the following materials has the highest thermal conductivity?

A particle enters a uniform magnetic field at some angle other than 90° or 0° to the field. The path followed by the particle is:

A boy sitting in a train moving with a uniform velocity drops a coin outside. A man standing outside the train will find the trajectory of the coin to be -

Lux is the SI unit of -

Ammonium hydroxide is found in -

The unit of electric current is:

What is the boiling point of water at sea level?

Lichens are sensitive to which air pollutant?

When a detergent is added to pure water, its surface tension –