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General Science Technology

Asked 2 times in UPSC Prelims · first asked 1997 · last asked 2012

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Newest first — expand for options, answers, and explanations

With reference to the scientific progress of ancient India, which of the statements given below are correct? 1. Different kinds of specialized surgical instruments were in common use by 1st century AD. 2. Transplant of internal organs in the human body had begun by the beginning of 3rd century AD. 3. The concept of sine of an angle was known in 5th century AD. 4. The concept of cyclic quadrilaterals was known in 7th century AD.

2012Sci & Tech
A1 and 2 only
B3 and 4 only
C1, 3 and 4 only
D1, 2, 3 and 4

Explanation

In ancient India, by the 1st century AD, various specialized surgical instruments were commonly used. The beginning of the 3rd century AD marked the start of internal organ transplants in the human body. Additionally, by the 5th century AD, the concept of the sine of an angle was already known. Furthermore, the understanding of cyclic quadrilaterals had emerged by the 7th century AD. Therefore, the correct statements are 1, 3, and 4.

The world's fastest computer has been able to perform (as of Dec. 1996):

1997Sci & Tech
A10^6 operations per second
B10^9 operations per second
C10^12 operations per second
D10^15 operations per second

Explanation

In December 1996, the world's fastest computer was capable of executing 10^12 operations per second.