Subject :NSO Class : Class 8
Subject :NSO Class : Class 9
The kinetic energy acquired by a body of mass m after travelling a fixed distance from rest under the action of a constant force is
(A) Directly proportional to mass m
(B) Inversely proportional to mass m
(C) Inversely proportional to mass m1/2
(D) Independent of mass
m.
ANswer Given By SOF is D.But isnt K.E.=1/2mv^2
Ans 1:
Class : Class 9
Option D because Kinetic energy means work done. Therefore, it can be said that work is done on body or can be said mass. W = F*D(Force * Displacement). Therefore it is independent of mass.
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Subject :NSO Class : Class 5
Ans 1:
Class : Class 7
Sun 's surface is about 6000 degrees celcius and blue star is 28000 degrees celcius so to find the answer 28000 -6000 which equals to 22000degrees celcius is blue star hotter than Sun .
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Subject :NSO Class : Class 6
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Subject :NSO Class : Class 3
Ans 5:
Class : Class 4
C'mon . In correct answer they are showing B and in solution they are showing A . I mean , at least somebody should check the system for errors
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Subject :NSO Class : Class 5
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Subject :NSO Class : Class 5
Ans 7:
Class : Class 4
P is the molten part made up of nickel and iron(p is not molten). R is the hottest part of Earth which is solid( P is the hottest part of Earth which is solid).Q is connected to surface with the help of volcanoes( R actually has magma in it ). Minerals and oil deposits are found in the part S. and option D is only corect
Ans 12:
Ans 22:
Class : Class 6
answer is d because core is innermost layer of earth so it could be made up of nicel and iron
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Subject :NSO Class : Class 5
Ans 1:
Class : Class 7
THe AntwerpThe answer is (A) because if forest fire occurs there will not be any trees and soil erosion can happen and All the ashes including soil may erode and then how can it make the soil fertile
Ans 2:
Class : Class 6
Come on Snigdha! The CORRECT ANSWER IS (B)! Ash makes soil fertile 'cause it's organic , dude! How will trees not grow?(P.S.- please don't think about Ash in Pokemon. Please, don't)ð¤¦ââï¸ð¤¦ââï¸
Ans 4:
Class : Class 6
I think the answer should be b as after a forest gets destroyed by a forest fire ,new trees will grow as the remain of the trees will decompose and make the sol fertile.
Ans 7:
Class : Class 9
Actually, forest fires lower the level of nitrogen in the soil. Since nitrogen quantities in the soil is extremely important for plant growth, lowered level of nitrogen is a big barrier in plant growth
Ans 8:
Class : Class 7
i think the answer should be B because the statement 'New trees will grow quickly to replace the burnt ones as the ash of the burnt trees will make the soil more fertile' is also true
Ans 17:
Class : Class 5
yes B is the answer as the ash contains minerals from the other trees.. i agree that the process of nitrogen fixation will make the soil fertile.........
Ans 19:
Class : Class 5
How ??? It should be b.As ash is an organic matter. the process of nitrogen fixation will make the soil fertile . Please tell .Why????
Ans 23:
Class : Class 8
B IS THE CORRECT ANSWER AS BURNING OF WASTE CROPS AFTER HARVESTING OF GRAINS IS STANDARD METHOD OF INCREASING SOIL FERTILITY
Ans 25:
Class : Class 7
SOF is giving wrong answers ! Does it ever thinks that by reading wrong things , we can get lesser marks in our exams ?!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1
Ans 26:
Class : Class 7
I agree with Ishan as trees cannot grow very quickly...But I did B at my first attempt
Ans 36:
Class : Class 5
The question and choices given are a bit tricky. The correct answer is A because the language of (iv) is deceptive and says "new trees will grow quickly to replace the burnt ones". You have to understand that "new trees" won't grow quickly, you can only sow small plants not trees.
Ans 38:
Class : Class 9
I think B is correct option as ash acts as a fertilizer for plants (even if in small quantities). Master Answer (Admin, Revisewise) EXPLAIN the answer to all of us.
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Subject :NSO Class : Class 7