This is the Day-24 questions of the CAF Revision plan for prelims. The questions are based on the syllabus as provided in the schedule. Aspirants are requested to go through the detailed CAF strategy to understand the need of the UPSC prelims and to prepare well for the same. Attempt the questions honestly. The link to key answers and explanations of this test is at the end of the questions. The maximum time to attempt the 15 questions is 20 minutes.
Q.1) Consider the following statements about Graphene.
- Graphene is an allotrope (form) of carbon consisting of a single layer of carbon atoms arranged in a hexagonal lattice.
- It is the basic structural element of many other allotropes of carbon, such as graphite, charcoal, carbon nanotubes and fullerenes.
- It is used in the production of super computers.
Which of the above statements is/are correct?
(a) 1 and 2 only
(b) 1 and 3 only
(c) 2 only
(d) All the above
Q.2) Consider the following statements about Quantum Dots?
- Quantum dots (QDs) are tiny semiconductor particles a few nanometres in size, having optical and electronic properties that differ from larger LED particles.
- Their optoelectronic properties change as a function of both size and shape.
- It has many applications in several areas such as solar cells, transistors, LEDs, medical imaging and quantum computing.
Which of the above statements is/are correct?
(a) 1 and 2
(b) 1 and 3
(c) 2 and 3
(d) 1, 2 and 3
Q.3) Consider the following statements about Global Relay of Observatories Watching Transients Happen (GROWTH) initiative.
- GROWTH-India is a fully robotic telescope.
- It is both imaging telescope and the spectroscopy analysis telescope.
- United States of America, United Kingdom, Japan, Germany, India, Taiwan and Israel are part of the initiatives.
Which of the above statements is/are correct?
(a) 1 and 2
(b) 1 and 3
(c) 2 and 3
(d) 1, 2 and 3
Q.4) ‘DigiShala’ Free Doordarshan DTH educational channel for
(a) Government initiatives
(b) Science and technology
(c) Higher Secondary Schools
(d) Digital payments
Q.5) ‘LIMBS’ often in news is a
(a) New age fuel injection system for IC engines.
(b) Digiceautical developed to cure diseases related to limbs
(c) Bionic Limb created through 3-D printing.
(d) an easy to access, web-based tool for comprehensive, regulatory and proactive monitoring of court cases.
Q.6) ‘LINPACK benchmarks’ often in news related to
(a) Supercomputers
(b) Space shuttles
(c) Submarines
(d) Optical Fibre Communication
Q.7) Which of the following is/are VOIP (Voice over Internet protocol)?
(a) WhatsApp
(b) Skype
(c) Yahoo Messenger
(d) All the above
Q.8) ‘Tarang Sanchar Portal’ is a platform
(a) to disseminate the information to the public regarding Electro Magnetic Fields (EMF) signals and to allay the misconceptions and fear of health issues due to EMF emissions from mobile towers.
(b) single window for spectrum allocation
(c) for development of community-controlled telecom operations
(d) Both (b) and (c)
Q.9) IPTV is often in news is a
(a) new generation TV that communicates over Internet protocol
(b) a new vaccine for type-2 polio virus
(c) tele medicine over internet protocol
(d) None
Q.10) Specific Absorption Rate (SAR) often in news is
(a) Absorption of insolation from new age solar panels developed using silicon.
(b) Absorption of sewage pollutants from the silicon wafers developed by CSIR.
(c) is a measure of the rate at which energy is absorbed by the human body when exposed to a radio frequency (RF) electromagnetic field.
(d) None
Q.11) In which of the following areas can GPS technology be used?
- Mobile phone operations
- Banking operations
- Controlling the power grids
Select the correct answer using the code given below:
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
Q.12) “3D printing” has applications in which of the following?
- Preparation of confectionery items
- Manufacture of bionic ears
- Automotive industry
- Reconstructive surgeries
- Data processing technologies
Select the correct answer using the code given below:
(a) 1, 3 and 4 only
(b) 2, 3 and 5 only
(c) 1 and 4 only
(d) 1, 2, 3, 4 and 5
Q.13) Organic Light Emitting Diodes (OLEDs) are used to create digital display in many devices. What are the advantages of OLED displays over Liquid Crystal displays?
- OLED displays can be fabricated on flexible plastic substrates.
- Roll-up displays embedded in clothing can be made using OLEDs.
- Transparent displays are possible using OLEDs.
Select the correct answer using the code given below
(a) 1 and 3 only
(b) 2 only
(c) 1,2 and 3
(d) None of the above statements is correct
Q.14) With reference to ‘Li-Fi’, recently in the news, which of the following statements is/are correct?
- It uses light as the medium for high-speed data transmission.
- It is a wireless technology and is several times faster than ‘WiFi’.
Select the correct answer using the code given below.
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Q.15) ‘DotBook’ often in news is a
(a) New age Nano laptop for kids
(b) Braille laptop which can be useful for the visually impaired.
(c) A laptop which uses quantum dots as its processor.
(d) It’s a 3-D printed book manufactured by graphene.