In the context of Tata Institute of Fundamental Research (TIFR) discovering the superconductive nature of semi metal Bismuth, consider the following statements 1. Superconductors are materials that conduct electricity with no resistance whatsoever. 2. Bis

examrobotsa's picture

Submitted by examrobotsa on

Q: 28 (Current Affairs-DEC/2016)
In the context of Tata Institute of Fundamental Research (TIFR) discovering the superconductive nature of semi metal Bismuth, consider the following statements
1. Superconductors are materials that conduct electricity with no resistance whatsoever.
2. Bismuth is a high-density, silvery, pink-tinged metal. Bismuth metal is brittle and so it is usually mixed with other metals to make it useful. Its alloys with tin or cadmium have low melting points and are used in fire detectors and extinguishers, electric fuses and solders.
Which of the above statements are not correct?

question_subject: 

Science

stats: 

0,25,69,12,9,48,25

keywords: 

{'bismuth metal': [0, 0, 0, 1], 'semi metal bismuth': [0, 0, 0, 1], 'superconductors': [0, 0, 0, 1], 'other metals': [0, 0, 1, 2], 'bismuth': [0, 0, 0, 1], 'superconductive nature': [0, 0, 0, 1], 'alloys': [0, 0, 0, 4], 'cadmium': [1, 0, 0, 0], 'low melting points': [0, 0, 1, 1], 'metal': [3, 0, 4, 6], 'silvery': [0, 0, 0, 1], 'materials': [0, 1, 1, 0], 'tin': [0, 0, 0, 1], 'electric fuses': [0, 0, 0, 1]}