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``` 08 April 2023 Time limit: 0 Quiz-summary 0 of 5 questions completed Questions: 1 2 3 4 5 Information 08 April 2023 Static Quiz for UPSC Prelims You have already completed the quiz before. Hence you can not start it again. Quiz is loading... You must sign in or sign up to start the quiz. You have to finish following quiz, to start this quiz: Results 0 of 5 questions answered correctly Your time: Time has elapsed You have reached 0 of 0 points, (0) Average score     Your score     Your result has been entered into leaderboard Loading Name: E-Mail: Captcha: 1 2 3 4 5 Answered Review Question 1 of 5 1. Question 2 points With reference to Quick Response (QR code) code, consider the following statement: 1. It is just a two-dimensional design that can be scanned with smartphones 2. The QR code generally has four small squares placed in the corners of a bigger square. 3. More number of squares denote larger volume of data stored or retrieved 4. QR codes are specific to the operating system of the smartphone device being used Which of the statements given above is/are correct? 1 and 3 only 1,2 and 3 only 2,3 and 4 only 2 and 3 only Correct Correct Answer: A Explanation Option A is correct answer. • Statement 1 is correct. There are many variations of one-dimensional and two-dimensional barcodes, a lot of which look very similar. The QR code is just one of the two-dimensional designs that happens to be the most frequently used code to scan with smartphones. • Statement 2 is incorrect. The QR code stands out with its three small squares placed in the lower and upper left corners and upper right corner. The overall code has a square shape composed of a matrix of small squares. • Statement 3 is correct. More number of squares denotes more volume of data. • Statement 4 is incorrect. Both iPhones and Android smartphones can scan QR codes directly from the main camera app, as long as it is using the latest iOS or Android software. You simply open the camera and point it towards the QR code, which will immediately recognise it and open a push notification requiring you tap it to finish the relevant operation. Incorrect Correct Answer: A Explanation Option A is correct answer. • Statement 1 is correct. There are many variations of one-dimensional and two-dimensional barcodes, a lot of which look very similar. The QR code is just one of the two-dimensional designs that happens to be the most frequently used code to scan with smartphones. • Statement 2 is incorrect. The QR code stands out with its three small squares placed in the lower and upper left corners and upper right corner. The overall code has a square shape composed of a matrix of small squares. • Statement 3 is correct. More number of squares denotes more volume of data. • Statement 4 is incorrect. Both iPhones and Android smartphones can scan QR codes directly from the main camera app, as long as it is using the latest iOS or Android software. You simply open the camera and point it towards the QR code, which will immediately recognise it and open a push notification requiring you tap it to finish the relevant operation. Question 2 of 5 2. Question 2 points Consider the following statement about Optical Fibre cable: 1.It is composed of an inner core and an outer cylinder called cladding. 2. Service providers require a fiber-ready router in order to accommodate fiber-optic speeds. 3.Silica is used for OFC fabrication due to its narrow wavelength range. 4.Fiber optic cable has a much higher bandwidth as compared to copper cables. Which of the statements given above is/are correct? a) 1 and 2 only 1,2 and 4 only 2 and 4 only 1,2,3 and 4 only Correct Correct Answer: B Explanation Option B is correct answer. • Statement 1 is correct. Optical Fibre is hair-thin material made of glass. Generally, optical fiber has a diameter of 125 micrometers (μm), which is actually the diameter of the cladding, or outer reflecting layer. The core, or inner transmitting cylinder, may have a much smaller diameter (sometimes 10 μm). • Statement 2 is correct. Service providers require a fiber-ready router (often called a “residential gateway” by an internet provider) in order to accommodate fiber-optic speeds. • Statement 3 is incorrect. Silica is used for OFC fabrication because silica has a wide wavelength range with good optical transparency • Statement 4 is correct. Fiber optic has a much higher bandwidth than optical fiber cable Incorrect Correct Answer: B Explanation Option B is correct answer. • Statement 1 is correct. Optical Fibre is hair-thin material made of glass. Generally, optical fiber has a diameter of 125 micrometers (μm), which is actually the diameter of the cladding, or outer reflecting layer. The core, or inner transmitting cylinder, may have a much smaller diameter (sometimes 10 μm). • Statement 2 is correct. Service providers require a fiber-ready router (often called a “residential gateway” by an internet provider) in order to accommodate fiber-optic speeds. • Statement 3 is incorrect. Silica is used for OFC fabrication because silica has a wide wavelength range with good optical transparency • Statement 4 is correct. Fiber optic has a much higher bandwidth than optical fiber cable Question 3 of 5 3. Question 2 points Consider the following statements about sodium ion battery and lithium ion battery: 1.Energy density is sodium ion battery is higher than lithium ion battery 2.Sodium is more widely available compared to lithium 3.Sodium ion battery offer better performance and can operate in wide range of temperature Which of the statements given above is/are correct? 1 and 2 only 1 and 3 only 2 and 3 only 2 only Correct Correct Answer: C Option C is correct answer. • Statement 1 is incorrect. Energy density in sodium battery is lower than lithium ion battery • Statement 2 is correct. Lithium is a scares resource of the world and sodium is easily available along with lithium cobalt is which required which make it costly • Statement 3 is correct. Sodium ion battery offers better performance compared to Li-ion battery Incorrect Correct Answer: C Option C is correct answer. • Statement 1 is incorrect. Energy density in sodium battery is lower than lithium ion battery • Statement 2 is correct. Lithium is a scares resource of the world and sodium is easily available along with lithium cobalt is which required which make it costly • Statement 3 is correct. Sodium ion battery offers better performance compared to Li-ion battery Question 4 of 5 4. Question 2 points Consider the following statement about “Gaganyaan”: 1. Prior to launch of Gaganyaan, only USA and Russia have successfully launched human spaceflight mission. 2. The first trial will be unmanned while the second trial will include a robot on-board 3. The astronaut suit for this mission is indigenously developed by ISRO Which of the statements given above is/are correct? 2 only 1 and 3 only 1,2 and 3 only 1 and 2 only Correct Correct Answer: A Explanation Option A is correct answer. • Statement 1 is incorrect. India would become the fourth nation in the world to launch a human spaceflight mission after Russia, China, and the USA • Statement 2 is correct. The first trial will be unmanned and the second trial will include a female robot named ‘Vyommitra’ • Statement 3 is incorrect. The astronaut suit for the mission is jointly developed by India and Russia. Incorrect Correct Answer: A Explanation Option A is correct answer. • Statement 1 is incorrect. India would become the fourth nation in the world to launch a human spaceflight mission after Russia, China, and the USA • Statement 2 is correct. The first trial will be unmanned and the second trial will include a female robot named ‘Vyommitra’ • Statement 3 is incorrect. The astronaut suit for the mission is jointly developed by India and Russia. Question 5 of 5 5. Question 2 points The term ‘Bandicoot’ recently in news is related to: a) Robotic scavenger b) Air purifier c) Smoke detector d) Water purifier Robotic scavenger Air purifier Smoke detector Water purifier Correct Correct Answer: A Explanation • Option A is correct. The Bandicoot Robot is the world’s first robotic scavenger, developed as a Make in India and Swachh Bharat Abhiyan initiative by National Award-winning startup Genrobotics Incorrect Correct Answer: A Explanation • Option A is correct. The Bandicoot Robot is the world’s first robotic scavenger, developed as a Make in India and Swachh Bharat Abhiyan initiative by National Award-winning startup Genrobotics ```
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## Leaderboard: 08 April 2023

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