National Science Olympiad Forum By SOF Olympiad Trainer - Page 789

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8
Anybody has an explanation?

Ans 2:

Class : Class 8

Ans 3:

Class : Class 8

Ans 4:

Class : Class 6
Landfills pollute land and water so they are located on the outskirts of the city

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 5
The correct ans is D

Ans 2:

Class : Class 6
D

Ans 3:

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

Ans 4:

Class : Class 4

Ans 5:

Class : Class 3
It’s mosquito..it sucks blood so answer is A

Ans 6:

Class : Class 5
Its a Mosquito. It sucks blood. The answer is A.

Ans 7:

Class : Class 8

Ans 8:

Class : Class 4
I’m saying the same term of Anush nikam

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Subject :NSO    Class : Class 5

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 9
D drives me crazy

Ans 2:

Class : Class 6
ans is d

Ans 3:

Class : Class 4
Answer is = D

Ans 4:

Class : Class 7
D

Ans 5:

Class : Class 5
no c is correct ans

Ans 6:

Class : Class 7
ANSWER IS 'D'

Ans 7:

Class :
D

Ans 8:

Class :
The answer is {D}

Ans 9:

Class : Class 6
answer is d because core is innermost layer of earth so it could be made up of nicel and iron

Ans 10:

Class : Class 5
P is made up of iron so a is wrong

Ans 11:

Class : Class 8
Class:Class:Class:VERY HARD

Ans 12:

Class : Class 10
A and D. are the correct answer

Ans 13:

Class : Class 7
The answer is D

Ans 14:

Class : Class 8
No, the inner core is actually made up of iron and nickel.

Ans 15:

Class : Class 5
answer is D

Ans 16:

Class : Class 7
a c d are correct

Ans 17:

Class :
ans d

Ans 18:

Class : Class 7
sof is dumb nearly all answers are given wrong

Ans 19:

Class : Class 1
I do not think that all answers and words of synopsis is correct

Ans 20:

Class : Class 6
D

Ans 21:

Class : Class 5
they give two answer correct and but one of the two are the right answers

Ans 22:

Class : Class 1

Ans 23:

Class : Class 7
d correct ans

Ans 24:

Class :
D

Ans 25: (Master Answer)

Class :

Ans 26:

Class :

Ans 27:

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 28:

Class :
ans is d

Ans 29:

Class : Class 5
you all are mads. D , A are correct options

Ans 30:

Class : Class 8
you are correct it doesnt update it self every year

Ans 31:

Class : Class 3
you fools i found the correct answer d

Ans 32:

Class : Class 8
Correct option is D because mineral deposits are found on the crust of the Earth

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Subject :NSO    Class : Class 5

Ans 1:

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 2:

Class : Class 9

Ans 3:

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 4:

Class : Class 7
I agree with Ishan as trees cannot grow very quickly...But I did B at my first attempt

Ans 5:

Class : Class 9
Answer is B as ash is an organic

Ans 6:

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 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 :
It is certainly B as ashes of any organic matter makes soil fertile.

Ans 9:

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 10:

Class : Class 5
The correct answer is Bthis time I think SOF is wrong

Ans 11:

Class : Class 4
ddddddd

Ans 12:

Class : Class 7
Harry?! What a fake! Harr potter is an adult!

Ans 13:

Class : Class 6
B should be the correct answer

Ans 14:

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 15:

Class : Class 8
Answer must be B as it is organic and increases soil fertility.

Ans 16:

Class : Class 6
i think it should be B..as ash acts as a fertilizer.

Ans 17:

Class : Class 9
I think the answer is B

Ans 18:

Class : Class 7
B is the answer!

Ans 19:

Class : Class 5

Ans 20:

Class : Class 7
the answer is B.

Ans 21:

Class : Class 7
BBBB IS THE ANSWER

Ans 22:

Class : Class 7
The answer should be B.

Ans 23:

Class : Class 9
B is the correct answer

Ans 24:

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 25: (Master Answer)

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Ans 26:

Class :
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 27:

Class :
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 28:

Class : Class 7

Ans 29:

Class : Class 5
BBBBBBBBBBBBBBBBBB IT IS THE CORRECT ANSWER I AGREE WITH THE OTHERS

Ans 30:

Class : Class 10
I agree ,B is the correct answer

Ans 31:

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.

Ans 32:

Class : Class 8
WHAT! B is correct, not A. The answer is B, NOT A!

Ans 33:

Class : Class 9
Ash is an organic matter so the answer should be B

Ans 34:

Class :
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)🤦‍♂️🤦‍♂️

Ans 35:

Class :

Ans 36:

Class : Class 8
a is correct because there willbe soil erosion without trees

Ans 37:

Class : Class 5
B B B B B B . B B B B B B BB BB B B B B B . IS THE ANSWER

Ans 38:

Class :
I think B is the correct answer

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Subject :NSO    Class : Class 7

Ans 1: (Master Answer)

Class :
The correct answer is A.

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 8
Answer: C

Ans 2:

Class :
Answer-C

Ans 3:

Class :
ANSWER-C

Ans 4:

Class : Class 6
C

Ans 5:

Class : Class 5
answer b

Ans 6:

Class : Class 8
Answer: C

Ans 7:

Class : Class 9

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Subject :NSO    Class : Class 9

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Subject :NSO    Class : Class 9

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Subject :NSO    Class : Class 9

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