state gov APPSC (ఆంధ్రప్రదేశ్) Group 2 (Pre + Mains) Mock Test 2023 Current Affairs Science and Technology
Which of the following statements about Tantalum, a rare metal recently discovered in the Sutlej river is NOT true?
1
Tantalum is an extremely hard and heavy metal, with high corrosion resistance due to the formation of an oxide layer when exposed to air.
2
It is almost completely immune to chemical attack at temperatures below 150°C
3
As tantalum has a low melting point, it is frequently used as a substitute for platinum, which is more expensive.
4
Tantalum is mostly used in the electronics industry due to its high capacitance.