What is the name of the President of Chile as of May

Which of the following gases is also known as a 'Stranger' gas?

In which part of the chloroplast does the light reaction occur?

Decibel is used to measure the ___________.

The electrical conductivity of a semiconductor increases with rise in temperature because:

Amphibians and many reptiles typically have which type of heart?

Which change would directly cause the minimum wavelength in X-ray emission to decrease?

Calculate the work done when a force of 10 N moves an object 5 m at 60° angle to direction of force.

When hard water is evaporated completely, the white solid remains in the container. It may be due to the presence of

1. Carbonates of Ca and Mg