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Daily Quiz: April 25, 2019
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- Question 1 of 7
1. Question
1 pointsCategory: Science and TechnologyConsider the following statements with respect to U-235 and U-238:
- Both were chemically identical but they differ in their physical properties.
- Isotope separation from non-fissile to fissile is known as enrichment.
- Enrichment is done by the centripetal process.
Which of the statements given above is/are correct?
Correct
U-235 and U-238 were chemically identical but they differ in their physical properties and the separation of non-fissile material from the fissile is known as enrichment of fuel, which can be carried out by using the centrifugal process.
Incorrect
U-235 and U-238 were chemically identical but they differ in their physical properties and the separation of non-fissile material from the fissile is known as enrichment of fuel, which can be carried out by using the centrifugal process.
- Question 2 of 7
2. Question
1 pointsCategory: Science and TechnologyWhich one among the following best describes about the ―Nisarga-Runa‖ Technology developed by BARC?
Correct
Nisargaruna plant can process biodegradable waste such as kitchen waste, paper, grass, gobar and dry leaves. It offers Zero garbage and Zero effluent and provides high quality manure and methane gas. Weedfree manure obtained from such waste has high nitrogen contents and acts as an excellent soil conditioner. This plant could be set up for ecofriendly disposal of wet-waste generated in kitchens/canteens of big Hospitals/Hotels/Factories/residential complexes and can avoid health hazards due to dump sites. This technology of biphasic biomethanation has high potential of solving the solid waste management problems of the urban areas and provides organic manure and bio-gas as a fuel.
Incorrect
Nisargaruna plant can process biodegradable waste such as kitchen waste, paper, grass, gobar and dry leaves. It offers Zero garbage and Zero effluent and provides high quality manure and methane gas. Weedfree manure obtained from such waste has high nitrogen contents and acts as an excellent soil conditioner. This plant could be set up for ecofriendly disposal of wet-waste generated in kitchens/canteens of big Hospitals/Hotels/Factories/residential complexes and can avoid health hazards due to dump sites. This technology of biphasic biomethanation has high potential of solving the solid waste management problems of the urban areas and provides organic manure and bio-gas as a fuel.
- Question 3 of 7
3. Question
1 pointsCategory: Science and TechnologyWhat is Raman Effect?
Correct
Raman Effect indicates for the change in wavelength exhibited by some of the radiation scattered in a medium. The effect is specific to the molecules which cause it, and so can be used in spectroscopic analysis.
Incorrect
Raman Effect indicates for the change in wavelength exhibited by some of the radiation scattered in a medium. The effect is specific to the molecules which cause it, and so can be used in spectroscopic analysis.
- Question 4 of 7
4. Question
1 pointsCategory: Science and TechnologyOrbital decay, a process of prolonged reduction in the attitude of a Satellite’s Orbit is caused by which of the following reasons?
- Atmospheric drag
- Tides
- Gravitational pull Correct code:
Correct
Orbital decay, a process of prolonged reduction in the altitude of a satellite’s orbit is caused due to atmospheric drag, tides and gravitational pull.
Incorrect
Orbital decay, a process of prolonged reduction in the altitude of a satellite’s orbit is caused due to atmospheric drag, tides and gravitational pull.
- Question 5 of 7
5. Question
1 pointsCategory: Science and TechnologyHow do you distinguish between Passive Optical Network (PON) and Gigabit Passive Optical Network (GPON)?
- PON is a network architecture that brings fiber cabling and signals to the home using a point-to-multipoint scheme that enables a single optical fibre to serve multiple premises.
- PON standard differs from non-PON standards in that it achieves higher bandwidth and higher efficiency using larger, variable- length packets.
- GPON offers efficient packaging of user traffic, with frame segmentation allowing higher Quality of Service (QOS) for delay- sensitive voice and video communications traffic.
Which of the statements given above are correct?
Correct
GPON standard differs from other passive optical network standards in that it achieves higher bandwidth and higher efficiency using larger variable length packets. GPON offers efficient packaging of user traffic with frame segmentation allowing higher quality of service for delay- sensitive voice and video communications traffic. On the other hand, PON is a network architecutre that brings fibre cabling and signals to the home using a point-to-multipoint scheme that enables a single optical fibre to serve multiple premises.
Incorrect
GPON standard differs from other passive optical network standards in that it achieves higher bandwidth and higher efficiency using larger variable length packets. GPON offers efficient packaging of user traffic with frame segmentation allowing higher quality of service for delay- sensitive voice and video communications traffic. On the other hand, PON is a network architecutre that brings fibre cabling and signals to the home using a point-to-multipoint scheme that enables a single optical fibre to serve multiple premises.
- Question 6 of 7
6. Question
1 pointsCategory: Science and TechnologyRecently, scientists have developed a device to near completion like an ipad that could be folded or rolled up repeatedly. What has been used in its development?
Correct
The device has been developed to near completion using a bistable ‘electrofluidic imaging film’ for e–paper. The screen of proposed flexible devices would need to be able to display text and images, yet be flexible and tough enough.
Incorrect
The device has been developed to near completion using a bistable ‘electrofluidic imaging film’ for e–paper. The screen of proposed flexible devices would need to be able to display text and images, yet be flexible and tough enough.
- Question 7 of 7
7. Question
1 pointsCategory: Science and TechnologyConsider the following statements:
- Nirbhaya is a subsonic cruise missile being developed by DRDO.
- The air version of Brahmos has been successfully test-fired recently.
- Brahmos-II will be hypersonic cruise missile with target range of more than 300 km.
Which of the above statements is/are not true?
Correct
The air version of Brahmos has been successfully test-fired recently. Brahmos-II will be hypersonic cruise missile with range more than 300 km.
Incorrect
The air version of Brahmos has been successfully test-fired recently. Brahmos-II will be hypersonic cruise missile with range more than 300 km.
