Which of the following is a device designed to protect electrical devices from voltage spikes?

In which market form, a market or industry is dominated by a few firms? 

Which schedule of the constitution of India list the states and union Territories of India?

The tomb of which of these ancient emperors is located in the Sasaram town of Bihar state? 

Which is the largest human cell?

Optical fibres are mainly used in?

Endothermic reactions are those in which?

Maxwell is the unit of -