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Daily Quiz : UPSC Prelims Marathon – March 3
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106 responses to “Daily Quiz : UPSC Prelims Marathon – March 3”
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3/5
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You have reached 5 of 5 scores, (100%)
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4 of 5 questions answered correctly
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Daily Quiz : UPSC Prelims Marathon – March 3
03 Mar, 2017Post By : ForumIASComments : 101Category : Daily Quiz
free upsc prelims questions and answers by forumiasDaily Quiz: March 3
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3 of 5 questions answered correctlyYour time: 00:03:22
You have reached 3 of 5 scores, (60%)
Average score 49%
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Daily Quiz: March 3
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3 of 5 questions answered correctly
Your time: 00:03:02
You have reached 3 of 5 scores, (60%) -
aaj pata laga why mrunal geography lectures are so important.
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march 4th .. env. 5/6.. bro.. yo… next time 6/6.. insallah 🙂
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good bro.. hunt u down in next 😉
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5/5
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:02:04
You have reached 3 of 5 scores, (60%)
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On Wikipedia it says that, {” Currently, there are two hypotheses that attempt to explain their (hotspots) origin. One suggests that hotspots are due to mantle plumes that rise as thermal diapirs from the core–mantle boundary. The other hypothesis is that lithospheric extension permits the passive rising of melt from shallow depths.”}
Two hypothesies – mainly for the provenance (source) of magma, i.e core-mantle boundary (upper mantle derived) shallow source magma and deeper mantle magma for hotspots.
For deeper source there is no controversy.
For shallow source like that of Yellowstone, Lithospheric extension model is proposed. This extension is of localized origin unlike MORs. The pre-existing upper-mantle derived magma is erupted due to release in pressure due to extension of lithosphere.
Now, The mechanism of this extension is contested. Dr. Gillian Foulger (who is the foremost proponent of this concept), claims that it is related to plate movements, mimicking MOR on a smaller scale.
But other Geoscientists claim that it is due to localized straining associated with faulting (as in Basin and range province of US), and not because of localized convection of magma as Dr. Foulger suggests.
Therefore Dr. Foulger associates hotspots with localized ”plate movements” due to localized convection of shallow magma chamber. i.e., mimicking MOR on a smaller scale and hence hotspots (atleast those of shallow source origin) are considered to be originated from Divergent boundaries (if at all you can call it a divergent boundary). Hence it is CONTESTED.
But she has few supporters in the fraternity. Because similar settings elsewhere in the world like Mt. Tibesti donot show such mechanism and Yellowstone is a unique case.
Hope this helps Lordy !
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4 of 5 questions answered correctlyYour time: 00:01:44
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Accepted. I studied Divergent Boundaries again, and found out divergence causes basaltic magma flow which cannot build mountains.
But on Wikipedia it says Hotspot Volcanism is contested. So I don’t understand..what is it?
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underwater volcanoes are more prevalent i thought..specially mid ridges volcanoes..so ocean ocean..ocean continent why ?
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4 of 5 🙂
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20 basis points growth
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5/5..
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5 of 5 questions answered correctly
Your time: 00:01:43
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Daily Quiz: March 3
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4 of 5 questions answered correctlyYour time: 00:03:12
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Providing small explanation is a welcome move…
#Thanks ForumIAS… -
Kaunsi hai woh ridge Lordy bhai? It is on the emperor chain of seamounts where u’ll find Hawaii, and not any ridge. This chain is not created by MOR activity as Paleomagnetic data doesnot support MOR activity.
Hotspots are not contested. They are accepted by IUGS (International Union of Geological Sciences). It is the body that facilitates Intl. cooperation in Earth Sciences. Similar to IUPAC for chemistry.
And if Hawaii is on MOR then evidences like alternate bands of reverse and normal magnetic polarities on Oceanic crust (Paleomagnetism) should have been documented. But nothing of that sort has been observed. Infact lack of such evidence forced Geologists to think of another mechanism of formation of Volcanoes like Hawaii, Reunion, Kergeulen. And they concluded on Hotspot volcanism.
Lordy Bhai bahut saal Geology padhne mein guzaare. Aise mat bolo yaar. Aise Qs pe main bhi Khushfaimiyaan rakhta tha exams ke baad. Kuch kaam nahi aati. dil zaroor bahal jata hai magar, neend nahi aati.
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Hawaii is a seamount chain on a Mid-Oceanic Ridge. Therefore it is an example of Divergence created Volcano.
The idea of Hotspots is still contested. Many link it to Divergent Boundaries, others consider mantle plumes to be the cause. Either ways, Hawaii can be considered a Divergence Volcano.
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sahi hi baat karte hain vaise, vo toh kismat ki kutiya bane hue hain aajkal.
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awakkad……aap mains diye the na?
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4 of 5 questions answered correctly
Your time: 00:03:03
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baat sahi hai
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4/5
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3 of 5 questions answered correctly
Your time: 00:02:06
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4/5
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Results
4 of 5 questions answered correctly
Your time: 00:01:37
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Thanx Lordy!!! 🙂 but the Q says which type of plate convergence zone will generate most volcanoes, so technically it doesn’t matter whether incidences of O-O are lesser/greater than O-C. What matters is the ease of magma finding its way out, which is easier in O-O setting than O-C.
The Q nowhere mentions ”documented”. But yes in the exam I wud assume that to be the case. Also Lordy! Hawaiian volcanoes are not O-O divergence volcanoes. They are hotspot volcanoes like Tristan da cunha and Azores.
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60% 🙂
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Simple explanation for you Ali,
O-O boundaries are generally in divergence. Therefore incidences of O-O convergence are much lesser than O-C convergence.Q also asks about the most number of documented volcanoes. It does not take into account Divergence created volcanoes (like Hawaii). I think the answer is perfectly justified.
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5 out of 5
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aap sab ka explantion diya karo..bachche neeche jhagad kar time waste kar rahe hain..time is crucial
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agree !
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sahi kaha..
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thanks 🙂
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Results
4 of 5 questions answered correctly
Your time: 00:01:39
You have reached 4 of 5 scores, (80%) -
4 of 5 questions answered correctly
Your time: 00:04:40
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Results
3 of 5 questions answered correctlyYour time: 00:03:29
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What i meant was there are max volcanoes on o-o divergent boundaries and then on o-c plate boundaries.
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You have reached 3 of 5 scores, (60%)
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3/5
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Yes
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can P waves travel through Gases ????
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L waves, also known as long waves, are surface waves created by earthquakes. They are the slowest of all earthquake waves, but usually cause the most intense shaking and damage to property.
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Dust particles are one of the many reasons indeed.
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4/5
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4/5
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good,,
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The eastern side of the Philippine Sea Plate is a convergent boundary with the Pacific Plate subducting at the Izu-Ogasawara Trench.
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Okkk thanx
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2/5
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There is no rule that O-O will always diverge….there are many example where O-O plate form convergent boundary… Aleutian Islands , Soloman Islands.
Since question is asking about ‘most ‘ number of volcanoes…. answer is O-C convergent -
https://uploads.disquscdn.com/images/57d581cd5ef4c03c78daba3072393a01d90388ed6829c5a27caa822b7240f22d
From Wikipedia, I found that bahut badi khichdi paki hui hai Philippines ke aaju baaju
nanhe munne plates ke saath interact karti philippines plate. -
hahahahahahahaha – – – –
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Ocean-Ocean convergence is also a destructive plate boundary and produces volcanic islands. I am not sure whether the answer that O-C convergence produces maximum volcano; is backed by some theory or is just an empirical evidence.
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No. that statement is wrong.
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Hmm, specific answer will be presence of air molecules of comparable size according to me.
Someone commented that if there was no dust particles present, sky will appear dark. Is it possible, when air molecules present in atmosphere are still there ? -
I think Philippines plate is oceanic and it subducts under eurasiam plate
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5/5
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🙂
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Results
3 of 5 questions answered correctlyYour time: 00:02:45
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4/5
Satisfactory -
dust केवल एक की type की नहीं होती जो हमें दिखती है…..dust के कई प्रकार होते हैं….Cosmetic dust,atmospheric dust, domestic dust etc…..और उसका size micro भी हो सकता है, उससे बडा भी हो सकता है….
मुद्दे की बात ये है कि आप प्रश्न पूछ रहे हैं तो आपको specific होना पडेगा…..अगर dust को micro particle मानकर generalize कर दिया और ये कहा जाये कि sky का blue colour dust की वजह से है तो ये गलत है
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Question asks for zone of convergence
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O-O plates diverge(constructive plate margins). They form mid oceanic ridges.
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Is philippines plate a continental plate ?
Pacific plate is oceanic. -
Reminded me of electromagnetic . Most loathed topic in engineering days.
In gs its simple case of dust particles ? -
? It will get better 🙂
ATB -
But in O-O convergence also heavier plate subduct and destruction take place…volcanoes and then island arc formation…
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Maine bhi yehi dekha search maar kar
Btw – look at what we read in 10th class (NCERT) https://uploads.disquscdn.com/images/5da32da5c90cca10d9ee118ff1e65c46b968d4df8f60eb558f58090e21467ff0.png -
Thanks for such a good explanation
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3/5 – improvement 🙂
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??????
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What about you today?
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4 of 5 scores, (80%)
time: 00:01:34 -
E & T ?? ?
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4/5
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nope….it will appear BLACK.. 🙂
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So, if dust particles will not be there, sky will not appear to be blue ?
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Tyndall and Rayleigh thought that the blue colour of the sky must be due to small particles of dust and droplets of water vapour in the atmosphere. Even today, people sometimes incorrectly say that this is the case. Later scientists realised that if this were true, there would be more variation of sky colour with humidity or haze conditions than was actually observed, so they supposed correctly that the molecules of oxygen and nitrogen in the air are sufficient to account for the scattering. The case was finally settled by Einstein in 1911, who calculated the detailed formula for the scattering of light from molecules; and this was found to be in agreement with experiment. He was even able to use the calculation as a further verification of Avogadro’s number when compared with observation. The molecules are able to scatter light because the electromagnetic field of the light waves induces electric dipole moments in the molecules.
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4th: most of the volcanic activity in Ring of Fire zone…..this way you can reach to correct option.
5th: Dust Particles cause refraction (Scattering of light)….they scatter blue light more than ohter high wavelength light (coz particles size is too small)………water vapor iofc is the reason of Green house effect…they absorb reflected (long waves) light..!! -
I thought it was because of air molecules of comparable size of wavelength of blue light, due to which they scatter blue light and sky appears blue to us.
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Philippines come under the same zone. See ring of fire diagram
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what about philippines ?
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In Q5 sky appears blue due to scattering of light. I don’t know dust particles may be a reason.
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Bcz thats the destructive plate margin. The oceanic crust gets subsided below the continental crust and forms magma which comes out as volcanoes. Like we have manygreat active volcanoes in the chile peru zone( east pacific coast)
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Consider….Ring of Fire….doubt clear..!!
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excellent 🙂
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Why does ocean-continent convergence zone create max volcanoes?
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for me – 4th and 5th questions
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Your time: 00:01:08
You have reached 5 of 5 scores, (100%)
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where is the doubt?
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Daily Quiz: March 3………..chill 🙂
Results
5 of 5 questions answered correctly
Your time: 00:03:27
You have reached 5 of 5 scores, (100%)Average score 0%Your score
100%
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Daily Quiz: March 3
Results
3 of 5 questions answered correctlyYour time: 00:03:24
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