3819.Which of the following is the correct explanation with respect to Petrifaction?
Process of fossilisation in which dissolved minerals replace organic matter
Process of accumulation of toxic substances along the food chain
Process of removal of toxic substance through use of bacteria
Process of rearing earth worms.
Explanation:
Petrifaction is the process of fossilisation in which dissolved minerals replace organic matter. A 20 million year old fossilised tree was discovered on the outskirts of Himachal Pradesh and saved from destruction. It is said that the discovered fossils dated back to paleo flooding that was related to global warming and glacial melt, resulting in floods.
Petrifaction is the process of fossilisation in which dissolved minerals replace organic matter. A 20 million year old fossilised tree was discovered on the outskirts of Himachal Pradesh and saved from destruction. It is said that the discovered fossils dated back to paleo flooding that was related to global warming and glacial melt, resulting in floods.
3820.Ecuador was in news because of the recent earthquake. Consider the following statements with respect to Ecuador
1. Ecuador is a small islandoff the coast of Japan.
2. Ecuador which lies in close proximity to shifting boundary between tectonic platesis more prone to such earthquakes.
Select the correct answer using the codes given below
1. Ecuador is a small islandoff the coast of Japan.
2. Ecuador which lies in close proximity to shifting boundary between tectonic platesis more prone to such earthquakes.
Select the correct answer using the codes given below
1 only
2 only
Both
None
Explanation:
Ecuador is a South American country situated close to equator. The active tectonics of Ecuador is dominated by the effects of the subduction of the Nazca Plate beneath the South American Plate. Ecuador lies within the Northern Volcanic Zone where the subduction zone is moving at a rate of 7 cm/yr to the east-northeast, significantly oblique to the trend of this segment of the Andes.
Ecuador is a South American country situated close to equator. The active tectonics of Ecuador is dominated by the effects of the subduction of the Nazca Plate beneath the South American Plate. Ecuador lies within the Northern Volcanic Zone where the subduction zone is moving at a rate of 7 cm/yr to the east-northeast, significantly oblique to the trend of this segment of the Andes.
3821.Consider the following International institutions
1. International development association
2. International finance corporation
3. International centre for settlement of investment disputes
Which of the following is/are not the organs of World Bank Group?
1. International development association
2. International finance corporation
3. International centre for settlement of investment disputes
Which of the following is/are not the organs of World Bank Group?
3 only
2 and 3 only
1 and 3 only
None of the above
Explanation:
The World Bank is an international financial institution that provides loans to developing countries for capital programs. It comprises two institutions: the International Bank for Reconstruction and Development (IBRD. , and the International Development Association (IDA). The World Bank is a component of the World Bank Group, which is part of the United Nations system.
The World Bank Group consists of
The International Bank for Reconstruction and Development (IBRD. , established in 1945, which provides debt financing on the basis of sovereign guarantees;
The International Finance Corporation (IFC. , established in 1956, which provides various forms of financing without sovereign guarantees, primarily to the private sector;
The International Development Association (IDA), established in 1960, which provides concessional financing (interest-free loans or grants), usually with sovereign guarantees;
The International Centre for Settlement of Investment Disputes (ICSID. , established in 1965, which works with governments to reduce investment risk;
The Multilateral Investment Guarantee Agency (MIGA), established in 1988, which provides insurance against certain types of risk, including political risk, primarily to the private sector.
The World Bank is an international financial institution that provides loans to developing countries for capital programs. It comprises two institutions: the International Bank for Reconstruction and Development (IBRD. , and the International Development Association (IDA). The World Bank is a component of the World Bank Group, which is part of the United Nations system.
The World Bank Group consists of
The International Bank for Reconstruction and Development (IBRD. , established in 1945, which provides debt financing on the basis of sovereign guarantees;
The International Finance Corporation (IFC. , established in 1956, which provides various forms of financing without sovereign guarantees, primarily to the private sector;
The International Development Association (IDA), established in 1960, which provides concessional financing (interest-free loans or grants), usually with sovereign guarantees;
The International Centre for Settlement of Investment Disputes (ICSID. , established in 1965, which works with governments to reduce investment risk;
The Multilateral Investment Guarantee Agency (MIGA), established in 1988, which provides insurance against certain types of risk, including political risk, primarily to the private sector.
3822.Consider the following statements with respect to recent development in India’s Defence corporation:
1. Logistical exchange memorandum of agreement or (LEMOA. is a defence agreement between India and Iran
2. According to LEMOA militaries of both the countries will share facilities for refuelling, supplies and spares.
3. Communication Interoperability and Security Memorandum Agreement (CISMOA. and the Basic Exchange and Cooperation Agreement for Geo-Spatial Cooperation (BECA. have been signed with US.
Select the correct answer using the codes given below
1. Logistical exchange memorandum of agreement or (LEMOA. is a defence agreement between India and Iran
2. According to LEMOA militaries of both the countries will share facilities for refuelling, supplies and spares.
3. Communication Interoperability and Security Memorandum Agreement (CISMOA. and the Basic Exchange and Cooperation Agreement for Geo-Spatial Cooperation (BECA. have been signed with US.
Select the correct answer using the codes given below
1 and 2
2 only
2 and 3
All of the above
Explanation:
Logistical exchange memorandum of agreement or (LEMOA. is a defence agreement between India and USA. According to this agreement militaries of both the nations to share facilities for refuelling, supplies and spares. USA has similar arrangements with over 80 countries. Agreements on CISMOA and BECA have not been signed yet.
Logistical exchange memorandum of agreement or (LEMOA. is a defence agreement between India and USA. According to this agreement militaries of both the nations to share facilities for refuelling, supplies and spares. USA has similar arrangements with over 80 countries. Agreements on CISMOA and BECA have not been signed yet.
3823.Recently Tara Bhagavati cult, a lesser known sect of Buddhism was in news. Consider the following statements about this sect:
1. This cult belongs to Mahayana sect of Buddhism.
2. It was popular in Southern part of India.
Which of the above statements are correct:
1. This cult belongs to Mahayana sect of Buddhism.
2. It was popular in Southern part of India.
Which of the above statements are correct:
1 only
2 only
Both 1 and 2
Neither 1 nor 2
Explanation:
Tara Bhagwati is a part of Vajrayana sect of Buddhism. Inscription related to Buddhism was found in Lakkundi, Karnataka, a place of antiquarian interest with nearly 50 temples, 101 stepped wells and a large number of inscriptions spread over the Chalukya, Kalachuri, Seuna and Hoysala periods.
The inscription, whose lower portion has been severed off, makes salutations to Lord Buddha, ‘dhamma’, ‘sangha’ and Tara Bhagavati.
There are possibilities of the inscription speaking about donations to a Buddhist monastery located at Lakkundi. Besides, it was among a handful of inscriptions making specific reference to the Tara Bhagavati cult of the Vajrayana Buddhism which was in vogue here till 12th century.
The period of this inscription could be assigned to the regime of Hoysala king Veeraballala II (1173–1220 CE).
Tara Bhagwati is a part of Vajrayana sect of Buddhism. Inscription related to Buddhism was found in Lakkundi, Karnataka, a place of antiquarian interest with nearly 50 temples, 101 stepped wells and a large number of inscriptions spread over the Chalukya, Kalachuri, Seuna and Hoysala periods.
The inscription, whose lower portion has been severed off, makes salutations to Lord Buddha, ‘dhamma’, ‘sangha’ and Tara Bhagavati.
There are possibilities of the inscription speaking about donations to a Buddhist monastery located at Lakkundi. Besides, it was among a handful of inscriptions making specific reference to the Tara Bhagavati cult of the Vajrayana Buddhism which was in vogue here till 12th century.
The period of this inscription could be assigned to the regime of Hoysala king Veeraballala II (1173–1220 CE).
3824.Consider the following statements with respect to WPI.
1. Manufactured products have the highest weight among the basket of products used to calculate WPI.
2. WPI is released weekly by NSSO.
3. Base year to calculate WPI is 2004-05.
Select the correct answer using the codes given below
1. Manufactured products have the highest weight among the basket of products used to calculate WPI.
2. WPI is released weekly by NSSO.
3. Base year to calculate WPI is 2004-05.
Select the correct answer using the codes given below
1 and 2 only
2 and 3 only
1 and 3 only
All the above.
Explanation:
The WPI measures the price of a representative basket of wholesale goods. In India, this basket is composed of three groups: Primary Articles (20.1% of total weight), Fuel and Power (14.9%) and Manufactured Products (65%).
WPI numbers are typically measured weekly by Dept of Industrial policy and promotion - Ministry of Commerce and Industry.
Base year to calculate WPI – 2004-05.
The WPI measures the price of a representative basket of wholesale goods. In India, this basket is composed of three groups: Primary Articles (20.1% of total weight), Fuel and Power (14.9%) and Manufactured Products (65%).
WPI numbers are typically measured weekly by Dept of Industrial policy and promotion - Ministry of Commerce and Industry.
Base year to calculate WPI – 2004-05.
4251.Black soil is mainly composed of clay, thus it has high moisture retention capacity . Black soils are in fact rich in kankar nodules which add to the fertility of the soil.
Consider the statements the effects of ‘Oil Spill’
1. It reduces Photosynthetic activities in water bodies.
2. It results into killing of birds and mammals that die of hypothermia
3. Food web of water bodies gets even more complex
Select the correct code:
Consider the statements the effects of ‘Oil Spill’
1. It reduces Photosynthetic activities in water bodies.
2. It results into killing of birds and mammals that die of hypothermia
3. Food web of water bodies gets even more complex
Select the correct code:
1 Only
1 and 2 Only
1 and 3 Only
All of the above
Explanation:
Oil spill can prove fatal for plant, animal and human life. The substance is so toxic that it can cause massive loss of species (food web will get simplify) that live in the sea. Oil spill penetrates into the plumage and fur of birds, breaks down the insulating capabilities of feather which makes them heavier, disallow them to fly and kill them via poisoning or hypothermia.
Oil spill can prove fatal for plant, animal and human life. The substance is so toxic that it can cause massive loss of species (food web will get simplify) that live in the sea. Oil spill penetrates into the plumage and fur of birds, breaks down the insulating capabilities of feather which makes them heavier, disallow them to fly and kill them via poisoning or hypothermia.
4253.Consider the following
1. Change in state
2. Change in temperature
3. Change in colour
4. Evolution of a gas
Which of the above observations leads to a chemical reaction?
1. Change in state
2. Change in temperature
3. Change in colour
4. Evolution of a gas
Which of the above observations leads to a chemical reaction?
1, 3 and 4
2, 3 and 4
1, 2 and 3
1, 2, 3 and 4
Explanation:
Refer to NCERT, Chemical Reactions and Equations
Refer to NCERT, Chemical Reactions and Equations
4254.Consider the following
1. Fuelling of Space Shuttle
2. Photosynthesis
3. Corrosion of metals
4. Rancidity
5. Enzymes
6. Combustion
Which of the above involves ‘Redox’ reaction?
1. Fuelling of Space Shuttle
2. Photosynthesis
3. Corrosion of metals
4. Rancidity
5. Enzymes
6. Combustion
Which of the above involves ‘Redox’ reaction?
1, 2 and 5
2, 3, 5 and 6
1, 2, 4 and 5
1, 2, 3, 4, 5 and 6
Explanation:
self explanatory
self explanatory
4255.Consider the following statements
1. All non-metals are either solid or gases
2. All metals are solid at room temperature
3. All non-metals are non-lustrous
4. All non-metals are bad conductors of electricity
Select the incorrect code
1. All non-metals are either solid or gases
2. All metals are solid at room temperature
3. All non-metals are non-lustrous
4. All non-metals are bad conductors of electricity
Select the incorrect code
1, 3 and 4
1, 2 and 3
2 and 4 Only
1, 2, 3 and 4
Explanation:
Bromine is a non-metal which is liquid
Mercury is a metal but exists as liquid at room temperature.
Iodine is a non-metal but lustrous
Graphite is a non-metal (allotrope of carbon) but good conductor of electricity
Bromine is a non-metal which is liquid
Mercury is a metal but exists as liquid at room temperature.
Iodine is a non-metal but lustrous
Graphite is a non-metal (allotrope of carbon) but good conductor of electricity
4256.Consider the following
1. Sodium
2. Gold
3. Magnesium
4. Copper
5. Calcium
6. Platinum
Which of the above are found in nature as Free Elements?
1. Sodium
2. Gold
3. Magnesium
4. Copper
5. Calcium
6. Platinum
Which of the above are found in nature as Free Elements?
1, 2 and 6
2, 3 and 5
2, 4 and 6
1, 2, 4, 5 and 6
Explanation:
Some metals are found in Free State and some in the form of their compounds. Reactive elements like Sodium, Potassium, Magnesium and Calcium are not found in nature as free elements.
Some metals are found in Free State and some in the form of their compounds. Reactive elements like Sodium, Potassium, Magnesium and Calcium are not found in nature as free elements.
4258.Recently NASA’s new horizon had sent close-up images of Pluto. Consider following statements about New Horizons
1. New Horizons is an interplanetary space probe that was launched as a part of NASAs New Frontiers program
2. A space probe is a robotic spacecraft that leaves Earth orbit and explores space.
3. Space environment around Pluto and its moons has a lot of dust.
Select the correct statements
1. New Horizons is an interplanetary space probe that was launched as a part of NASAs New Frontiers program
2. A space probe is a robotic spacecraft that leaves Earth orbit and explores space.
3. Space environment around Pluto and its moons has a lot of dust.
Select the correct statements
1 only
1 and 2 only
All of the above
None of the above
Explanation:
Space environment around Pluto and its moons is almost empty, containing only about six dust particles per cubic mile, according to data collected by a student-built instrument riding on NASA’s New Horizons spacecraft.
Further reading - http://www.thehindu.com/sci-tech/science/space-around-pluto-nearly-dust-freenasa/article8370579.ece
Further reading - https://en.wikipedia.org/wiki/New_Horizons
Space probe may approach the Moon; enter interplanetary space; flyby, orbit, or land on other planetary bodies; or approach interstellar space.
Space environment around Pluto and its moons is almost empty, containing only about six dust particles per cubic mile, according to data collected by a student-built instrument riding on NASA’s New Horizons spacecraft.
Further reading - http://www.thehindu.com/sci-tech/science/space-around-pluto-nearly-dust-freenasa/article8370579.ece
Further reading - https://en.wikipedia.org/wiki/New_Horizons
Space probe may approach the Moon; enter interplanetary space; flyby, orbit, or land on other planetary bodies; or approach interstellar space.
4259.Consider the following statements about ‘jet lag’
1. It is a physiological condition which results from alterations to the bodys circadian rhythms resulting from rapid long-distance trans-meridian travel on high-speed aircraft.
2. It is also known as desynchronosis or circadian dysrhythmia
Select the correct statements –
1. It is a physiological condition which results from alterations to the bodys circadian rhythms resulting from rapid long-distance trans-meridian travel on high-speed aircraft.
2. It is also known as desynchronosis or circadian dysrhythmia
Select the correct statements –
1 only
2 only
Both 1 and 2
Neither 1 nor 2
Explanation:
Mental health implication - Jet lag may affect the mental health of vulnerable individuals. When travelling across time zones, there is a "phase-shift of body temperature, rapid-eye-movement sleep, melatonin production, and other circadian rhythms”
More reading - https://en.wikipedia.org/wiki/Jet_lag
http://www.thehindu.com/sci-tech/health/fresh-method-developed-to-deal-with-jetlag/article8668714.ece
Mental health implication - Jet lag may affect the mental health of vulnerable individuals. When travelling across time zones, there is a "phase-shift of body temperature, rapid-eye-movement sleep, melatonin production, and other circadian rhythms”
More reading - https://en.wikipedia.org/wiki/Jet_lag
http://www.thehindu.com/sci-tech/health/fresh-method-developed-to-deal-with-jetlag/article8668714.ece
4260.Mentha also known as mint is a very beneficial crop for farmers in India. Consider the statements regarding crop ‘Mentha’
1. India is a net importer of mentha
2. It is included in Minimum Support Price (MSP)
3. Menthol is obtained from plant mentha
Select the correct statement/s
1. India is a net importer of mentha
2. It is included in Minimum Support Price (MSP)
3. Menthol is obtained from plant mentha
Select the correct statement/s
Only 1
1 and 2
1, 2 and 3
Only 3
Explanation:
Just as rice, wheat and cotton are among the 25 crops that qualify for a government-mandated minimum support price, the CSIR is framing a proposal to push for mentha (the plant that gives menthol), lavender, lemongrass, artemisia annua (the source of the antimalarial compound artemisinin), geranium, lavender and rose oil to be included in such a category.
India was an importer of mentha 40 years ago. Today it is the world’s leading producer. This is because mentha varieties were specifically bred to exude greater quantities of menthol mint oil. In 2014, mentha acreage spanned 3,00,000 hectares.
http://www.thehindu.com/todays-paper/tp-national/csir-wants-farmers-to-consider-alternatives/article8669484.ece
Just as rice, wheat and cotton are among the 25 crops that qualify for a government-mandated minimum support price, the CSIR is framing a proposal to push for mentha (the plant that gives menthol), lavender, lemongrass, artemisia annua (the source of the antimalarial compound artemisinin), geranium, lavender and rose oil to be included in such a category.
India was an importer of mentha 40 years ago. Today it is the world’s leading producer. This is because mentha varieties were specifically bred to exude greater quantities of menthol mint oil. In 2014, mentha acreage spanned 3,00,000 hectares.
http://www.thehindu.com/todays-paper/tp-national/csir-wants-farmers-to-consider-alternatives/article8669484.ece
4261.Consider the following statements regarding e-waste
1. Pyro metallurgy and hydro metallurgy are the processes used to extract gold from e-waste
2. Pyro metallurgy is a process in which leaching chemicals are used.
3. Hydro metallurgy is a process to extract gold using high temperatures.
Select the incorrect statements
1. Pyro metallurgy and hydro metallurgy are the processes used to extract gold from e-waste
2. Pyro metallurgy is a process in which leaching chemicals are used.
3. Hydro metallurgy is a process to extract gold using high temperatures.
Select the incorrect statements
Only 1
Only 1 and 2
Only 2 and 3
All of the above
Explanation:
Pyro metallurgy is a process to extract gold using high temperature and hydro metallurgy is a process to in which leaching chemicals are used.
Pyro metallurgy is a process to extract gold using high temperature and hydro metallurgy is a process to in which leaching chemicals are used.
4262.Consider the following statements:
1. Orbital speed of a satellite is independent of its mass
2. Orbital speed of a satellite depends upon the radius of orbit (height of satellite from the surface of earth)
3. Period of revolution of a satellite is independent of its mass
4. Escape velocity is independent of the mass, shape and size of the body and its direction of projection
Which of the statements given above is/are correct?
1. Orbital speed of a satellite is independent of its mass
2. Orbital speed of a satellite depends upon the radius of orbit (height of satellite from the surface of earth)
3. Period of revolution of a satellite is independent of its mass
4. Escape velocity is independent of the mass, shape and size of the body and its direction of projection
Which of the statements given above is/are correct?
3 and 4 only
1, 2 and 3 only
1, 3 and 4 only
All of the above
Explanation:
• Orbital speed of a satellite is independent of its mass. Hence satellites of different masses revolving in the orbit of same radius have same orbital speed.
• Orbital speed of a satellite depends upon the radius of orbit (height of satellite from the surface of earth). Greater the radius of orbit, lesser will be the orbital speed.
The orbital speed of a satellite revolving near the surface of earth is 7.9 km/sec
• Time taken by a satellite to complete one revolution in its orbit is called its period of revolution.
• Period of revolution of a satellite depends upon the height of satellite from the surface of earth. Greater the height more will be the period of revolution.
• However, period of revolution of a satellite is independent of its mass.
• The period of revolution of satellite revolving near the surface of earth is 1 hour 24 minute (84 minute)
• Orbital speed of a satellite is independent of its mass. Hence satellites of different masses revolving in the orbit of same radius have same orbital speed.
• Orbital speed of a satellite depends upon the radius of orbit (height of satellite from the surface of earth). Greater the radius of orbit, lesser will be the orbital speed.
The orbital speed of a satellite revolving near the surface of earth is 7.9 km/sec
• Time taken by a satellite to complete one revolution in its orbit is called its period of revolution.
• Period of revolution of a satellite depends upon the height of satellite from the surface of earth. Greater the height more will be the period of revolution.
• However, period of revolution of a satellite is independent of its mass.
• The period of revolution of satellite revolving near the surface of earth is 1 hour 24 minute (84 minute)
4263.Consider the following statements and select the incorrect statement/s from the codes given below:
1. The addition of detergent or soap decreases the viscosity of water and thus increases the cleaning ability
2. If a clean and dry needle is kept slowly on the surface of water, it floats due to surface tension of water
Choose the appropriate code:
1. The addition of detergent or soap decreases the viscosity of water and thus increases the cleaning ability
2. If a clean and dry needle is kept slowly on the surface of water, it floats due to surface tension of water
Choose the appropriate code:
1 only
2 only
Both 1 and 2
Neither 1 nor 2
Explanation:
• Both the given statements are examples of surface tension property of water
• If a clean and dry needle is kept slowly on the surface of water, it floats due to surface tension of water
• The addition of detergent or soap decreases the surface tension of water and thus increases the cleaning ability
• Surface Tension is the property of a liquid by virtue of which it has the tendency to have the area of its free surface minimum as if it were under tension like a stretched elastic membrane
• A liquid drop attains spherical shape due to surface tension as for given volume, sphere has minimum surface area
• Both the given statements are examples of surface tension property of water
• If a clean and dry needle is kept slowly on the surface of water, it floats due to surface tension of water
• The addition of detergent or soap decreases the surface tension of water and thus increases the cleaning ability
• Surface Tension is the property of a liquid by virtue of which it has the tendency to have the area of its free surface minimum as if it were under tension like a stretched elastic membrane
• A liquid drop attains spherical shape due to surface tension as for given volume, sphere has minimum surface area
4264.Identify the incorrect pair/s from the following:
1. Biggest Solar Observatory : : Kodaikanal
2. National Remote Sensing Centre : : Mahendragiri
3. INSAT Master Control Facility : : Hassan
4. Indian Deep Space Network (IDSN) : : Byalalu
Choose the correct code:
1. Biggest Solar Observatory : : Kodaikanal
2. National Remote Sensing Centre : : Mahendragiri
3. INSAT Master Control Facility : : Hassan
4. Indian Deep Space Network (IDSN) : : Byalalu
Choose the correct code:
3 only
3 and 4 only
1 and 2 only
2 only
Explanation:
Explanation:
• Biggest Solar Observatory is in Udaipur, Rajasthan on an island in the Fateh Sagar Lake.
• The sky conditions at Udaipur are quite favourable for solar observations. Since the observatory is situated amidst a large mass of water, air turbulence which occurs due to ground heating by suns rays is decreased. This improves the image quality and accuracy (average between 1-2 arc seconds).
• National Remote Sensing Centre is in Hyderabad not Mahendragiri
• Refer the below fig. for other space related centres
Explanation:
• Biggest Solar Observatory is in Udaipur, Rajasthan on an island in the Fateh Sagar Lake.
• The sky conditions at Udaipur are quite favourable for solar observations. Since the observatory is situated amidst a large mass of water, air turbulence which occurs due to ground heating by suns rays is decreased. This improves the image quality and accuracy (average between 1-2 arc seconds).
• National Remote Sensing Centre is in Hyderabad not Mahendragiri
• Refer the below fig. for other space related centres
4265.Which among the following waves are examples of Electromagnetic waves?
1) X-rays 2) Gamma-rays 3) a-rays 4) ß-rays 5) Ultrasonic wave
Choose the appropriate code:
1) X-rays 2) Gamma-rays 3) a-rays 4) ß-rays 5) Ultrasonic wave
Choose the appropriate code:
1, 2, 3 and 4 only
1 and 2 only
1 and 5 only
1, 2 and 5 only
Explanation:
• Electromagnetic waves or non-mechanical waves are those waves which do not require medium for their propagation i.e. which can propagate even through the vacuum are called non-mechanical wave.
• In other words, electromagnetic waves are waves which can travel through the vacuum of outer space. Mechanical waves, unlike electromagnetic waves, require the presence of a material medium in order to transport their energy from one location to another. • Following waves are not electro-magnetic – 1) Cathode rays 2) a-rays 3) ß-rays 4) Sound wave 5) Ultrasonic wave 6) Canal rays • Some important Electromagnetic waves – 1) ?-rays 2) X-rays 3) UV rays 4) Visible radiation 5) Infrared rays 6) Radio waves
• Electromagnetic waves or non-mechanical waves are those waves which do not require medium for their propagation i.e. which can propagate even through the vacuum are called non-mechanical wave.
• In other words, electromagnetic waves are waves which can travel through the vacuum of outer space. Mechanical waves, unlike electromagnetic waves, require the presence of a material medium in order to transport their energy from one location to another. • Following waves are not electro-magnetic – 1) Cathode rays 2) a-rays 3) ß-rays 4) Sound wave 5) Ultrasonic wave 6) Canal rays • Some important Electromagnetic waves – 1) ?-rays 2) X-rays 3) UV rays 4) Visible radiation 5) Infrared rays 6) Radio waves
4266.Consider the following statements in regard to India’s 3-stage Nuclear Power Programme:
1) The first stage Pressurised Heavy Water Reactors (PHWRs) use natural uranium as fuel and heavy water as moderator and coolant
2) The second stage Fast Breeder Reactors (FBRs) use plutonium (which is produced by irradiation of uranium-238) and liquid sodium as coolant
3) The third stage is based on the thorium-uranium-233 cycle. Uranium-233 is obtained by irradiation of thorium.
Which of the statements given above is/are correct?
1) The first stage Pressurised Heavy Water Reactors (PHWRs) use natural uranium as fuel and heavy water as moderator and coolant
2) The second stage Fast Breeder Reactors (FBRs) use plutonium (which is produced by irradiation of uranium-238) and liquid sodium as coolant
3) The third stage is based on the thorium-uranium-233 cycle. Uranium-233 is obtained by irradiation of thorium.
Which of the statements given above is/are correct?
2 and 3 only
1 and 2 only
1 and 3 only
All of the above
Explanation:
• All the statements are correct and self-explanatory
• All the statements are correct and self-explanatory