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There is some concern regarding the nanoparticles of some chemical elements that are used by the industry in the manufacture of various products. Why?
With reference to India, consider the following statements : 1. Monazite is a source of rare earths. 2. Monazite contains thorium. 3. Monazite occurs
With reference to polyethylene terephthalate, the use of which is so widespread in our daily lives, consider the following statements : 1. Its fibres
With reference to Indias decision to levy an equalization tax of 6% on _ online advertisement services offered by non-resident entities, which of the
The identity platform 'Aadhaar' provides open 'Application Programming Interfaces (APIs)'. What does it imply? 1. It can be integrated into any electr
The correct answer is option (d): Neither 1 nor 2. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
This question was asked in UPSC CSE Prelims 2018, GS Paper 1, as Question 84. It falls under Science & Technology > Materials & Engineering.
This question is rated "moderate". It requires sound conceptual understanding of the topic.
UPSC has asked 23 questions from Materials & Engineering (under Science & Technology) across multiple years. Visit the topic page to see the full list and year-wise trends.