निस्तापन (कैल्सीनेशन) किसकी अनुपस्थिति या सीमित आपूर्ति में की जाने वाली एक तापीय प्रक्रिया है?

The amalgamation process is primarily used to extract which of the following metals?

The crude iron directly obtained from the reduction of iron ore in a blast furnace is known as:

Match List-I (Metal) with List-II (Refining Process) and select the correct answer using the codes given below: List-I: a) Ni, b) Cu, c) Zr, d) Ge List-II: 1) Van Arkel process, 2) Electrolysis, 3) Mond process, 4) Zone refining