Science & Technology UPSC PYQ 2020

Question 1

Consider the following statements: Genetic changes can be introduced in the cells that produce eggs or sperms of a prospective A person’s genome can be edited before birth at the early embryonic stage. Human induced pluripotent stem cells can be injected into the embryo of a pig. Which of the statements given above is/are correct?

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Answer

1 only

Answer

2 and 3 only

Answer

2 only

Answer

1, 2 and 3

Question 2

Consider the following activities: Spraying pesticides on a crop field Inspecting the craters of active volcanoes Collecting breath samples from spouting whales for DNA analysis. At the present level of technology, which of the above activities can be successfully carried out by using drones?

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Answer

1 and 2 only

Answer

2 and 3 only

Answer

1 and 3 only

Answer

1, 2 and 3

Question 3

With reference to Visible Light Communication (VLC) technology, which of the following statements are correct?
1. VLC uses electromagnetic spectrum wavelengths 375 to 780 nm.
2. VLC is known as long-range optical wireless communication.
3. VLC can transmit large amounts of data faster than Bluetooth.
4. VLC has no electromagnetic interference.
Select the correct answer using the code given below:

Accepted Answer

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Answer

1, 2 and 3 only

Answer

1, 2 and 4 only

Answer

1, 3 and 4 only

Answer

2, 3 and 4 only

28 more Science & Technology 2020 questions await