91 C GS Test Question 24Feb
Qts1 . A layer facile Earth's atmosphere called Ionosphere facilitates radio communication. Why?
1. The presence of ozone caused the reflection of radio waves to Earth.
2. Radio waves have a very long wavelength. 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
Ans (b)
Explanation:
The ionosphere is the portion of the earth's upper atmosphere where ions and electrons are present in quantities sufficient to affect the propagation of radio waves. The most important feature of the ionosphere in terms of radio communications is its ability to reflect radio waves thus facilitating radio communication. However, only those waves within a certain frequency range will be reflected.
Long wave (LW) radio transmissions, with wavelengths of up to or more than a kilometre, are reflected by the ionosphere. Radio waves are a type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light. So, these waves are reflected by the ionosphere.
Qts2 . What is the difference between a CFL and an LED lamp ?
1. To produce light, a CFL uses mercury vapour and phosphor while an LED lamp uses semi- conductor material.
2. The average life span of a CFL is much longer than that of an LED lamp.
3. A CFL is less energy-efficient as compared to an LED lamp.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2, and 3
Ans. (c)
Explanation:
CFL (compact fluorescent lamp) contain mercury, which complicates their disposal. Mercury is an essential ingredient for most energy efficient lighting products, including CFLs. It is the mercury that excites phosphors in a CFL, causing them to glow and give light. When electric current passes through mercury vapor, the mercury emits ultraviolet energy. When this ultraviolet energy passes through the phosphor coating, it produces light very efficiently. Because mercury is consumed during lamp operation, a certain amount is necessary to produce light and achieve long lamp life. A light-emitting diode (LED) is a semiconductor light source.
LED lamps last much longer than CFLs, as much as 10x longer.
LED lamps typically use less power (watts) per unit of light generated (lumens). A good LED lamp can generate twice as many lumens per watt as a CFL.
Qts 3. Consider the following kinds of organisms :
1. Bacteria
2. Fungi
3. Flowering plants
Some species of which of the above kinds of organisms are employed as biopesticides ?
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
Ans. D
Explanation:
Biopesticides include "naturally occurring substances that control pests (biochemical pesticides), microorganisms that control pests (microbial pesticides), and pesticide substances produced by plants containing added genetic material (plant- incorporated protectants) or PIPs."
Biopesticides are biochemical pesticides that are naturally occurring substances that control pests by nontoxic mechanisms. Conventional pesticides, by contrast, are generally synthetic materials that directly kill or inactivate the pests. For example, a plant in the presence of chitosan will naturally induce systemic resistance (ISR) to allow the plant to defend itself against disease, pathogens and pests. Biopesticides are considered eco-friendly and easy to use. In the USA, the EPA regulates the registration and use of earth friendly biopesticides
Biopesticides fall into three major classes:
1.Microbial pesticides which consist of bacteria, entomopathogenic fungi or viruses (and sometimes includes the metabolites that bacteria or fungi produce). Entomopathogenic nematodes are also often classed as microbial pesticides, even though they are multi-cellular.
2.Plant-incorporated protectants (PIPs) have genetic material from other species incorporated into their genetic material (i.e. GM crops).
3.iochemical pesticides are naturally occurring substances that control pests by nontoxic mechanisms.
Qts 4. Biomass gasification is considered to be one of the sustainable solutions to the power crisis in India. In this context, which of the following statements is/are correct?
1. Coconut shells, groundnut shells and rice husk can be used in biomass gasification.
2. The combustible gases generated from biomass gasification consist of hydrogen and carbon dioxide only.
3. The combustible gases generated from biomass gasification can be used for direct heat generation but not in internal combustion engines.
Select the correct answer using the codes given below:
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
Ans. A
Explanation:
A wide range of biomass fuels such as wood, charcoal, wood waste (branches, roots, bark, saw dust) as well agricultural residues- maize cobs, coconut shells, cereal straws, rice husks, can be used as fuel for biomass gasification. Hence option 1 is correct.
Biomass gasification means incomplete combustion of biomass resulting in production of combustible gases consisting of Carbon monoxide (CO), Hydrogen (H2) and traces of Methane (CH4). This mixture is called producer gas. Hence option 2 is not correct.
Producer gas can be used to run internal combustion engines (both compression and spark ignition), can be used as substitute for furnace oil in direct heat applications and can be used to produce, in an economically viable way, methanol an extremely attractive chemical which is useful both as fuel for heat engines as well as chemical feedstock for industries. Hence option 3 is also not correct.
Qts5. What is the role of ultraviolet (UV) radiation in the water purification systems?
1. lt inactivates/ kills harmful microorganisms in water.
2. It removes all the undesirable odours from the water.
3. It quickens the sedimentation of solid particles, removes turbidity and improves the clarity of water.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
Ans. A
Explanation:
Water purification is the process of removing undesirable chemicals, biological contaminants, suspended solids and gases from contaminated water.
Ultraviolet light (UV) is very effective at inactivating cysts, in low turbidity water. UV light's disinfection effectiveness decreases as turbidity increases, a result of the absorption, scattering, and shadowing caused by the suspended solids.
UV water treatment offers many advantages over other
Qts 6. What is the difference between asteroids and comets ?
1. Asteroids are small rocky planetoids, while comets are formed of frozen gases held together by rocky and metallic material.
2. Asteroids are found mostly between the orbits of Jupiter and Mars, while comets are found mostly between Venus and Mercury.
3. Comets show a perceptible glowing tail, while asteroids do not.
Which of the statements given above is/are correct?
(a) 1 and 2 only
(b) 1 and 3 only
(c) 3 only
(d) 1, 2 and 3
Ans. (b)
Explanation:
Asteroids are a class of small Solar System bodies in orbit around the Sun. They have also been called planetoids, especially the larger ones. The term asteroid has come increasingly to refer specifically to the small rocky-icy and metallic bodies of the inner Solar System out to the orbit of Jupiter. They are grouped with the outer bodies-centaurs, Neptune trojans, and trans-Neptunian objects-as minor planets, which is the term preferred in astronomical circles. A large majority of known asteroids orbit in the asteroid belt between the orbits of Mars and Jupiter or co-orbital with Jupiter (the Jupiter Trojans).
Comets are small, fragile, irregularly shaped bodies composed of a mixture of non-volatile grains and frozen gases. They have highly elliptical orbits that bring them very close to the Sun and swing them deeply into space, often beyond the orbit of Pluto i.e. Kupier belt.
Tracking comets is relatively easy for the amateur astronomer, as comets show little perceptible motion from night to night, and many are visible with the naked eye, whereas asteroids do not show any such tail.
Qts7 . The function of heavy water in a nuclear reactor is to
(a) Slow down the speed of neutrons
(b) Increase the speed of neutrons
(c) Cool down the reactor.
(d) Stop the nuclear reaction.
Ans.(a)
Explanation:
Heavy water is water highly enriched in the hydrogen isotope deuterium; e.g., heavy water used in CANDU reactors is 99.75% enriched (in ordinary water, the deuterium-to- hydrogen ratio is about 156 parts per million). Pure heavy water is not radioactive. It is about 11% denser than water, but otherwise, is physically and chemically similar.
Heavy water is used in certain types of nuclear reactors where it acts as a neutron moderator to slow down neutrons so that they are more likely to react with the fissile uranium-235 than with uranium-238 which captures neutrons without fissioning. The CANDU reactor uses this design. Light water also acts as a moderator but because light water absorbs more neutrons than heavy water, reactors using light water must use enriched uranium rather than natural uranium, otherwise criticality is impossible.
Qts8. Lead, ingested or inhaled, is a health hazard. After the addition of lead to petrol has been banned, what still are the sources of lead poisoning?
1. Smelting units
2. Pens and pencils
3. Paints cosmetics
4. Hair oils and
Select the correct answer using the codes given below:
(a) 1, 2 and 3 only
(b) 1 and 3 only
(c) 2 and 4 only
(d) 1, 2, 3 and 4
Ans. B
Explanation:
Lead poisoning is a medical condition caused by increased levels of the heavy metal lead in the body. Lead interferes with a variety of body processes and is toxic to many organs and tissues including the heart, bones, intestines, kidneys, and reproductive and nervous systems. Lead is entirely released from the smelting units, wall and furniture paints as well as by burning of petrol.
Some lead compounds are colorful and are used widely in
paints, and lead paint is a major route of lead exposure in
children. Hence only 1 and 3 correct.
Most pencil cores are made up of graphite mixed with a clay binder, which only leaves grey or black marks that can be easily erased. Hair oils and cosmetics are plant products. Hence, both 2 and 4 are not correct.
Qts 9. A genetically engineered form of brinjal, known as the Bt-brinjal, has been developed. The objective of this is
(a) To make it pest-resistant
(b) To improve its taste and nutritive qualities.
(c) To make it drought-resistant
(d) To make its shelf-life longer
Ans. (a)
Explanation:
The Bt brinjal is a suite of transgenic brinjals (also known as an eggplant or aubergine) created by inserting a crystal gene (Cry1Ac) from the soil bacterium Bacillus thuringiensis into the genome of various brinjal cultivars. The insertion of the gene, along with other genetic elements like promoters, terminators and an antibiotic resistance marker gene into the brinjal plant is accomplished using Agrobacterium-mediated recombination. The Bt brinjal has been developed to give resistance against lepidopteron insects, in particular the Brinjal Fruit and Shoot Borer (Leucinodes orbonalis)(FSB). Monsanto, a multinational company based in the USA, has developed the Bt brinjal in partnership with India's Maharashtra Hybrid Seeds Company (Mahyco).
Qts10 . Aspartame is an artificial sweetener sold in the market. It consists of amino acids and provides calories like other amino acids. Yet, it is used as a low-calorie sweetening agent in food items. What is the basis of this use?
(a) Aspartame is as sweet as table sugar, but unlike table sugar, it is not readily oxidized in human body due to lack of requisite enzymes
(b) When aspartame is used in food processing, the sweet taste remains, but it becomes resistant to oxidation
(c) Aspartame is as sweet as sugar, but after ingestion into metabolites that yield no calories
(d) Aspartame is several times sweeter than table sugar, hence food items made with small. quantities of aspartame yield fewer calories on oxidation
Ans.(d)
Explanation:
Aspartame is an artificial, non-saccharide sweetener used as a sugar substitute in some foods and beverages. It is approximately 200 times sweeter than sucrose, or table sugar. Due to this property, even though aspartame produces four kilocalories of energy per gram when metabolized, the quantity of aspartame needed to produce a sweet taste is so small that its caloric contribution is negligible.
Qts11. What is the difference between Bluetooth and Wi-Fi Devices ?
(a) Bluetooth uses 2.4 GHz radio frequency band, whereas Wi-Fi can use 2.4 GHz or 5 GHz frequency band
(b) Bluetooth is used for Wireless Local Area Networks (WLAN) only, whereas Wi-Fi is used for Wireless Wide Area Networks (WWAN) only
(c) When information is transmitted between two devices using Bluetooth technology, the devices have to be in the line of sight of each other, but when Wi-Fi technology is used the devices need not be in the line of sight of each other
(d) The Statements (a) and (b) given above are correct in this context
Ans.(a)
Explanation:
Bluetooth is a proprietary open wireless technology standard for exchanging data over short distances (using short wavelength radio transmissions in the ISM band from 2400 - 2480 MHz) from fixed and mobile devices, creating personal area networks (PANs) with high levels of security.
Wi-fi can transmit at frequencies of 2.4 GHz or 5 GHz. This frequency is much higher than the frequencies used for cellular phones, walkie-talkies and televisions. Increase the frequency of the signal can carry more data.
A wireless local area network (WLAN) links two or more devices using some wireless distribution method. Most modern WLANs are based on IEEE 802.11 standards, marketed under the Wi-Fi brand name.
Bluetooth devices use a radio communications system, so they do not have to be in line of sight of each other, and can even be in other rooms, so long as the received power is high enough.
Qts12 . A team of scientists at Brookhaven national laboratories including those from India created the heaviest anti-matter (anti-helium nucleus). What is/are the implication/implications of the creation of anti-matter?
1. It will make mineral prospecting and oil exploration easier and cheaper.
2. It will help probe the possibility of the existence of stars and galaxies made of anti- matter.
3. It will help understand the evolution of the universe. Select the correct answer using the codes given below:
(a) 1 only
(b) 2 and 3 only
(c) 3 only
(d) 1, 2 and 3
Ans. B
Explanation:
Just after the Big Bang, about 14 billion years ago, the universe was packed with equal amounts of matter and antimatter. Antimatter contains the same set of subatomic particles as matter but with opposite charges.
Physicists trying to explain this asymmetry have made a breakthrough. They created the heaviest antimatter known so far-anti-helium nucleus. It is a doppelganger entity to ordinary helium nucleus, Helium-4, with two protons and two neutrons. The heaviest antimatter created so far was Helium- 3 with two protons and one neutron.
The breakthrough was made by a team of international scientists working on the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory of the US Department of Energy. RHIC is the world's first machine that is capable of colliding ions as heavy as that of gold. The team comprised scientists from 54 institutes in 12 countries, including India. Detecting the heaviest antimatter can help shed light on the evolution of universe, which started its journey with equal amounts of matter and antimatter, says Yogendra Viyogi from Variable Energy Cyclotron Centre, Kolkata. He led the team of Indian scientists for the experiment.
Antimatter can also help search new phenomena in the cosmos. Just as heavier matter like carbon, sodium and iron are signatures of evolved life forms, heavier antimatter could help probe possibility of similar complex systems of universe made of antimatter. "The discovery of even small amounts of anti-helium nucleus in the cosmic ray would point towards the existence of stars and even entire galaxies made of antimatter
Qts13 . Which of the following is/are cited by the scientists as evidence/evidences for the continued expansion of universe ?
1. Detection of microwaves in space
2. Observation of redshift phenomenon in space
3. Movement of asteroids in space
4. Occurrence of supernova explosions in space
Select the correct answer using the codes given below:
(a) 1 and 2
(b) 2 only
(c) 1, 3 and 4
(d) None of the above can be cited as evidence
Ans. A
Explanation:
You may have noticed that when an ambulance or police car goes past, its siren is high-pitched as it comes towards you, then becomes low-pitched as it goes away. This effect, where there is a change in frequency and wavelength, is called the Doppler effect. It happens with any wave source that moves relative to an observer. When we look at the spectrum of a distant star, the absorption spectrum is there, but the pattern of lines has moved towards the red end of the spectrum. This is called red shift. It is a change in frequency of the position of the lines. Astronomers have found that the further from us a star is the more its light is red shifted. This tells us that distant galaxies are moving away from us, and that the further a galaxy is the faster it is moving away. Since we cannot assume that we have a special place in the universe this is evidence for a generally expanding universe. It suggests that everything is moving away from everything else. The A Big Bang theory says that this expansion started billions of E: years ago with an explosion.
Scientists discovered that there are microwaves coming from every direction in space. Big Bang theory says this is energy created at the beginning of the universe, just after the Big Bang, and that has been travelling through space ever since. A satellite called COBE has mapped the background microwave radiation of the universe as we see it. Big Bang theorists are still working on t
Qts14. Regular intake of fresh fruits and vegetables is recommended in the diet since they are a good source of antioxidants. How do antioxidants help a person maintain health and promote longevity?
(a) They activate the enzymes necessary for vitamin synthesis in the body and help prevent vitamin
deficiency
(b) They prevent excessive oxidation of carbohydrates, fats and proteins in the body and help avoid unnecessary wastage of energy
(c) They neutralize the free radicals produced in the body during metabolism
(d) They active certain genes in the cells of the body and help delay the ageing process
Ans.(c)
Explanation:
Antioxidants are substances that may protect cells from the damage caused by unstable molecules known as free radicals. Damage due to free radicals damage may lead to cancer. Antioxidants interact with and stabilise free radicals and may prevent some of the damage free radicals otherwise might cause. Examples of antioxidants include beta-carotene, lycopene, vitamins C, E, and A, and other substances.
Fruits and vegetables provide a range of antioxidants, vitamins A, C and E, carotenoids and flavonoids. Fruits and vegetables that have comparatively high levels of antioxidants include apples, grapefruit, green grapes, oranges, peach, red plums, Strawberries, beetroot, sprouts cauliflower, green cabbage, ettuce, onion, spinach and tomatoes.Antioxidants help to reduce the risk of cancer, heart attack and stroke.
Qts15. An artificial satellite orbiting around the Earth does not fall down. This is so because the attraction of Earth
(a) Does not exist at such distance
(b) Is neutralized by the attraction of the moon
(c) Provides the necessary speed for its steady motion.
(d) Provides the necessary acceleration for its motion.
Ans. (d)
Explanation:
Artificial satellites are human-built objects orbiting the Earth and other planets in the Solar System.
An artificial satellite orbiting the earth does not fell down because the earth's attraction produces the necessary acceleration for its motion in a curved path.
Qts16 . When the bark of a tree is removed in a circular fashion all around near its base, it gradually dries up and dies because
(a) Water from soil cannot rise to aerial parts.
(b) Roots are starved of energy.
(c) Tree is infected by soil microbes.
(d) Roots do not receive oxygen for respiration.
Ans.(b)
Explanation:
When the bark of a tree is removed in a circular fashion all around near its base, it gradually dries up an dies due to the reason that the phloem layer of tissue just below the bark is responsible for carrying food produced in the leaves by photosynthesis to the roots. Without this food, the roots ultimately die and cease sending water and minerals to the leaves. Then the leaves die.
Plants need water to photosynthesize. To summarise a fairly complex process, photosynthesis is the synthesis of sugar (energy) from light, carbon dioxide and water, with oxygen as a by-product. Take away any of those factors, and the plant won't grow. It has no energy.
Qts17. A company marketing food products advertises that its items do not contain trans-fats. What does this campaign signify to the customers?
1. The food products are not made out of hydrogenated oils.
2. The food products are not made out of animal fats/oils.
3. The oils used are not likely to damage the cardiovascular health of the consumers.
Which of the statements given above is/are above?
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d). 1, 2 and 3
Ans. (c)
Explanation:
Trans fat is the common name for unsaturated fat with trans- isomer (E-isomer) fatty acid(s). Because the term refers to the configuration of a double carbon-carbon bond, trans fats may be monounsaturated or polyunsaturated but never saturated.
Many of the random compounds created when oils are hydrogenated are "trans fats". Hence statement 1 is correct. These are unnatural compounds which are known to be detrimental to cardiovascular health. Hence statement 3 is also correct.
A type of trans fat occurs naturally in the milk and body fat of ruminants (such as cattle and sheep) at a level of 2-5% of total fat. Natural trans fats, which include conjugated linoleic acid (CLA) and vaccenic acid, originate in the rumen of these animals. CLA has two double bonds, one in the cis configuration and one in trans, which makes it simultaneously a cis- and a trans-fatty acid. Animal fats are good for health. Animal-based fats were once the only trans fats consumed, but by far the largest amount of trans fat consumed today is created by the processed food industry as a side effect of partially hydrogenating unsaturated plant fats (generally vegetable oils)..l
Qts18 .Satellites used for telecommunication relay are kept in a geostationary orbit. A satellite is said to be in such an orbit when :
1. The orbit is geosynchronous.
2. The orbit is circular
3. The orbit lies in the plane of the Earth's equator.
4. The orbit is at an altitude of 22,236 km.
Select the correct answer using the codes given below:
(a) 1, 2 and 3 only
(b) 1, 3 and 4 only
(c) 2 and 4 only
(d) 1, 2, 3 and 4
Ans.(a)
Explanation:
A geostationary orbit (or Geostationary Earth Orbit - GEO) is a geosynchronous orbit directly above the Earth's equator (0° latitude), with a period equal to the Earth's rotational period and an orbital eccentricity of approximately zero. An object in a geostationary orbit appears motionless, at a fixed position in the sky, to ground observers. Communications satellites and weather satellites are often given geostationary orbits, so that. the satellite antennas that communicate with them do not have to move to track them, but can be pointed permanently at the position in the sky where they stay.
Geostationary orbits are useful because they cause a satellite to appear stationary with respect to a fixed point on the rotating Earth, allowing a fixed antenna to maintain a link with the satellite. The satellite orbits in the direction of the Earth's rotation, at an altitude of 35,786 km (22,236 mi) above ground, producing an orbital period equal to the Earth's period of rotation, known as the sidereal day.
Hence, option (4) is not correct, as the orbit is at an altitude of 22,236 miles not kilometres.
Qts 19 . The Surface of a lake is frozen in severe winter, but the water art its bottom is still liquid. What is the reason?
(a) Ice is a bad conductor of heat
(b) Since the surface of the lake is at the same temperature as the air, no heat is lost
(c) The density of water is maximum at 4°C
(d) None of the statements (a), (b) and (c) given above is correct
Ans.(c)
Explanation:
In cold winter months, lakes and rivers freeze over forming ice. All liquids expand on heating, but water is an exception to this rule. If water is heated, its volume gradually decreases. (This decrease in volume continues till the temperature rises to 4 °C.) At temperatures over 4 °C water starts expanding. It then keeps expanding with the further rise in temperature, till finally at 100 °C it turns into steam.
At 4 °C, water has the least volume (occupies the least amount of space) and maximum density (is at its heaviest). This irregular expansion of water is called anomalous expansion. During winter months in colder countries the outside or atmospheric temperature is very low - it drops to below freezing - and the upper layers of water in the lakes and ponds start cooling. When the temperature of the surface layers falls to 4 °C, the water body acquires maximum density and sinks down. The water that sinks down displaces water below, and the lower layers of water simultaneously rise up. This also gets cooled to 4 °C and again sinks down. When the temperature of the water body finally goes below 4 °C, the density or heaviness of water decreases and as a result water does not sink down. The surface water finally freezes at 0 °C while the lower part still remains at 4 °C. The light frozen layer of ice floats on top.
Qts 20. Electrically charged particles from space travelling at speeds of several hundred km/sec can severely harm living beings if they reach the surface of the Earth. What prevents them from reaching the surface of the Earth?
(a) The Earth's magnetic field diverts them towards its poles
(b) Ozone layer around the Earth reflects them back to outer space
(c) Moisture in the upper layers of atmosphere prevents them from reaching the surface of the Earth
(d) None of the statements (a), (b) and (c) given above is correct
Ans. A
Explanation:
The Sun continually emits a flux of electrically charged particles into space. This is termed the solar wind. The Earth's magnetic field prevents these charged particles from reaching the Earth's surface, although in the Earth's polar regions, these particles can reach the upper part of the atmosphere, causing auroras. The Moon is outside the Earth's magnetic field for most of each month and has a negligible atmosphere, so solar wind particles can reach the Moon's surface.
Qts 21.Consider the following
National Career Service (NCS) Project
1.It is under Ministry of Labor and Employment
2. Project for transformation of the National Employment Service to provide a variety of career related services like job matching, career counselling, vocational guidance, information on skill development courses, apprenticeship, internships etc.
Which of the statements given above is/are correct?
(a) 1 and 2,
(b) 2 only
(c) 1 only
(d) neither 1 nor 2
Ans A
Qts 22. Consider the following
Mahatma Gandhi National Rural Employment Guarantee Act (MGNREGA)
1.It is under Ministry of Rural Development
2. MGNREGA is to provide at least 100 days of guaranteed wage employment in a financial year to every rural household whose adult members volunteer to do unskilled manual work
Which of the statements given above is/are correct?
(a) 1 and 2,
(b) 2 only
(c) 1 only
(d) neither 1 nor 2
Ans: A
Qts 23. Consider the following Indus river system
1.Indus after flowing in India goes to Pakistan .
2.Originates from Snow ranges of the Himalaya at an altitude of 508 m. In Tibet near Mansarovar lake from the springs of Sennege Khabab
3.Tributaries are Zaskar, Astar ,Dras, Shyok, Swat ,Kurram, Shigar, Gilgit Kabul, Jhelum, Chenab,Ravi,Beas and Sutlej
Which of the statements given above is/are above?
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d). 1, 2 and 3
Ans. D
Qts 24.Consider the following
Left bank tributaries of the Indus
1.Jhelum
Originates from Verinag Flows northwards from source to Wular lake and flows through Kashmir valley .
2.Chenab
Originates Near the Bora Locha pass in the Lahul Sriti of Zaskar range.
3.Ravi
Originates from Kulu hill near the Rohtang pass of Himachal Pradesh.
It flows between the Pir panjal and Dhaula Dhar ranges and enters the Punjab plain near Madhopur
4.Beas
Originates Near Rohtang pass in Himachal pradesh
It Crosses the Dhaula Dhar range through a deep gorges and debouches on the plain near Pong
5.Sutlej
Originates Near Dharma pass - Flows through the Trans Himalayan area and cut deep gorges in the Great Himalayas and form its boundary between India and Pakistan near Ferozpur.
Which of the statements given above is/are above?
(a) 1and 2 only
(b)1, 2 and 3 only
(c) 1,2 and 4 only
(d) 1, 2, 3,4,5
Ans. D