Challenge Prelims V1.0 – Day 73 – GS Paper (Science and Technology)

1. Consider the following statements regarding virtual reality (VR) and augmented reality (AR):

1. The real and virtual objects cannot be distinguished in VR whereas they can be distinguished in AR.
2. Both VR and AR can be viewed by users wearing special glasses only.

Which of the statements given above is/are correct?

2. Edge computing is used for data processing and content delivery. How many are the advantages of Edge computing over Cloud computing?

1. Edge computing allows quicker data processing
2. In Edge computing, data is stored and processed in the centralised data center
3. Internet of Things (IoT) based technology could be using Edge computing for analytics.

Select the correct answer using the code given below.

3. Geospatial Technology is often in news; it has applications in how many of the following areas?

1. Land-use and land-cover analysis
2. Early warning and response during the disaster
3. Mapping soil-erosion intensity
4. Mapping and analysing spread patterns of infectious diseases

Select the correct answer using the code given below.

4. With reference to 3D Bio-printing, consider the following statements:

1. It is a form of additive manufacturing that uses cells and other biocompatible materials as “inks”.
2. It prints living structures layer-by-layer which mimic the behaviour of natural living systems.

Which of the statements given above is/are correct?

5. Consider the following statements with reference to electric fuse:

1. The principle behind the operation of the fuse is the heating effect of the electrical current.
2. It is connected in parallel with the electric component.

Which of the statements given above is/are correct?

6. How many of the following is/are the advantages of Lithium-ion batteries over traditional batteries such as Nickel-cadmium (NiCad) batteries?

1. Lithium-ion batteries are smaller in size, require less maintenance, and are environmentally safer.
2. Lithium-ion batteries are cheaper.
3. Lithium-ion has virtually no self-discharge.

Select the correct answer using the code given below.

7. Which of the following best describes an Internet Cookie?

8. Recently, the Department of Telecommunications has rolled out fifth generation or 5G telecom services in India. In this context, consider the following statements:

1. Low band spectrum of 5G has better coverage and penetration of signals whereas the high band spectrum has more internet speed.
2. High band spectrum falls on the chart in the 24GHz and higher whereas the low band spectrum is lower than 1 GHz.

Which of the statements given above is/are correct?

9. ‘Deep Web’, is a term, often seen in the news. Which of the following statements best describes it?

10. What is White-fi communication technology?

11. Semiconductors are present in most of the modern electronic devices that we use. Which of the following statements is/are true regarding semiconductors?

1. The resistivity of semiconductors is more than insulators but less than conductors.
2. The most commonly used semiconductor elements are Silicon and Germanium.

Select the correct answer using the codes given below.

12. With respect to Free Space Optical (FSO) communication, which of the following statements is/are correct?

1. It is a communication technology in which data is transmitted through the air.
2. It can be used for point-to-point line of sight communication.

Select the correct answer using the code given below:

13. Consider the following statements regarding Gallium and Germanium, the rare earth minerals, recently seen in news:

1. Both minerals can be found in Zinc ores.
2. While Gallium is used in semiconductor devices, Germanium finds application in solar cells.
3. India has no Gallium deposits but Germanium is recovered as a by-product of alumina.

How many statements given above are correct?

14. With reference to the properties of the Graphene, consider the following statements:

1. It is a two-dimensional form of carbon.
2. It consists of a multi layers of carbon atoms arranged in a hexagonal lattice.
3. It is prepared by heating Graphite, Coal tar and or Shellac.

How many of the statements given above is/are correct?

15. Chips manufacturers usually flush bags of chips with nitrogen gas to