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2 questions · 2007 · answers as per the UPSC key

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UPSC 2007 · Q14 · Science & Technology › Materials & Engineering · Save

Consider the following statements:

  1. The series of international paper sizes is based on A0 size whose area is 0.5 m² (approx).
  2. The area of A4 size paper is 1⁄8th of the A0 size paper.

Which of the statements given above is/are correct?

(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
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Answer: (d) Neither 1 nor 2
UPSC 2007 · Q112 · Science & Technology › Materials & Engineering · Save

Which one of the following types of glass can cut off ultraviolet rays?

(a) Soda glass
(b) Pyrex glass
(c) Jena glass
(d) Crookes glass
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Answer: (d) Crookes glass