1. With reference to the 'UMANG Application, consider the following statements:
1. It provides a single platform of all e-Gov services ranging from Central to Local Government bodies to all Indian citizens.
2. It is developed by the DRDO.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
2. Consider the following statements:
1. Flash memory is a volatile memory.
2. It requires a continuous power supply to retain data.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
3. Why are all satellites and missiles launched from the east coast?
1. It helps in cutting down the cost of rockets used to launch the satellites.
2. This helps in placing a satellite in polar orbits moving across the equator in the north-south direction.
Which of the above reasons given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
4. With reference to the Quantum Computing, consider the following statement
1. Quantum computation uses quantum bits, which can be in superpositions of states.
2. Superposition means that each qubit can represent both a 1 and a 0 at the same time.
Which of the statement given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
5. With reference to the Virtual reality, consider the following statements
1. It is a computer technology replicating an environment, real or imagined.
2. VR artificially creates the experience of senses, including sight, touch, hearing and smell.
Which of the following statement is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Answers
1. (a)
UMANG (Unified Mobile Application for New-age Governance) is envisaged to make e-governance. It is developed by the Ministry of Electronics and Information Technology (MeitY) and National e-Governance Division (NeGD) to drive Mobile Governance in India.
UMANG provides a single platform for all Indian Citizens to access pan India e-Gov services ranging from Central to Local Government bodies and other citizen-centric services.
It provides a unified approach where citizens can install one application to avail of multiple government services.
UMANG service has been made available on multiple channels like mobile application, web, IVR and SMS which can be accessed through smartphones, feature phones, tablets and desktops.
2. (d)
Statement 1 is incorrect. Flash memory is a non-volatile memory. However, it is an integrated circuit.
Statement 2 is incorrect. Flash memory does not require a continuous power supply to retain data.
3. (a)
Statement 1 is correct. The surface velocity of rotation varies from point to point on the Earth. It is about 1600 km per hour or about 460 meters in a second near the equator. The velocity gradually reduces as we move to the poles and it is practically zero there. A satellite launched from the sites near the equator towards the east direction will get an initial boost equal to the velocity of Earth surface. Thus, the initial boost helps in cutting down the cost of rockets used to launch the satellites. But this benefit can be taken only for such satellites which are placed in geo-stationary orbit or which circle the Earth parallel to the equator. Such satellites are usually communication satellites or satellites used for scientific research such as ISS.
Statement 2 is incorrect. There are other satellites which are placed in polar orbits moving across the equator in north south direction and used mainly for mapping or some times for spying. Such satellites are generally launched in south ward or north ward direction and therefore cannot take advantage of the Earth’s rotation.
https://www.thehindu.com/sci-tech/science/why-are-all-satellites-and-missiles-launched-from-the-east-coast/article7202159.ece
4. (c)
Both the statements are correct.
A quantum computer is a device that performs quantum computing. They are different from binary digital electronic computers based on transistors. Whereas common digital computing requires that the data be encoded into binary digits (bits), each of which is always in one of two definite states (0 or 1), quantum computation uses quantum bits, which can be in superpositions of states.
Quantum computers operate according to two key principles of quantum physics: superposition and entanglement.
Superposition means that each qubit can represent both a 1 and a 0 at the same time. Entanglement means that qubits in a superposition can be correlated with each other; that is, the state of one (whether it is a 1 or a 0) can depend on the state of another.
Using these two principles, qubits can act as more sophisticated switches, enabling quantum computers to function in ways that allow them to solve difficult problems that are intractable using today’s computers.
5. (c)
Virtual Reality or virtual realities is also called an immersive multimedia or computer-simulated reality. It is a computer technology replicating an environment, real or imagined, wherein, a user’s physical presence and environment are simultaneously with user interaction.
VR artificially creates the experience of senses, including sight, touch, hearing and smell.
Either a computer screen or a special virtual reality headset, display the most up-to-date virtual realities. Some simulators consist of additional sensory information and focus on real sounds with the help of speakers or headphones.
Currently, some advanced haptic systems consist of physical information, which is usually termed as force feedback in applications of medical, gaming and military.
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