Q1: Temperature attained in soldering of metals is about __________ °C.

ANS:A - 150-300

The temperature attained in soldering of metals typically ranges from 150-300°C. Soldering involves joining two or more metal parts by melting a filler metal (solder) with a lower melting point than the pieces being joined. This process is commonly used in electronics, plumbing, and metalwork for creating strong and reliable bonds between metal components.