National Science Olympiad Forum By SOF Olympiad Trainer - Page 744

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
Tricky

Ans 2:

Class : Class 10
the fig is wrong because the in the fig there should be repeltion and they have given attraction.

Ans 3:

Class : Class 7
first of all the answer itself is wrong even if its B shouldn't be q repelling p not vice versa

Ans 4:

Class : Class 10
B is the answer because like poles repel.

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8

Ans 2:

Class : Class 8
Anybody has an explanation?

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 6
D

Ans 2:

Class : Class 7

Ans 3:

Class : Class 4

Ans 4:

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

Ans 5:

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

Ans 6:

Class : Class 3
The correct ans is D

Ans 7:

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

Ans 8:

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 1:

Class : Class 5
D

Ans 2:

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

Ans 3:

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

Ans 4:

Class : Class 5
answer is D

Ans 5:

Class : Class 7
d correct ans

Ans 6:

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

Ans 7:

Class : Class 7
ANSWER IS 'D'

Ans 8:

Class : Class 7
The answer is D

Ans 9:

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

Ans 10:

Class : Class 7
D

Ans 11:

Class : Class 1

Ans 12:

Class : Class 5
D

Ans 13:

Class : Class 4
Answer is = D

Ans 14:

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

Ans 15:

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

Ans 16:

Class : Class 4
The answer is {D}

Ans 17:

Class : Class 6
D

Ans 18:

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

Ans 19:

Class : Class 5
ans is d

Ans 20:

Class : Class 6
ans d

Ans 21:

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

Ans 22:

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

Ans 23:

Class : Class 5
no c is correct ans

Ans 24:

Class : Class 8
A and D. are the correct answer

Ans 25:

Class : Class 6

Ans 26: (Master Answer)

Class : Class 1

Ans 27:

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

Ans 28:

Class : Class 7
a c d are correct

Ans 29:

Class : Class 9
D drives me crazy

Ans 30:

Class : Class 6
ans is d

Ans 31:

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

Ans 32:

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

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Subject :NSO    Class : Class 5

Ans 1:

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

Ans 2:

Class : Class 7

Ans 3:

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

Ans 4:

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 5:

Class : Class 7
The answer should be B.

Ans 6: (Master Answer)

Class : Class 1

Ans 7:

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 8:

Class : Class 6
B should be the correct answer

Ans 9:

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

Ans 10:

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 11:

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

Ans 12:

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

Ans 13:

Class : Class 9
I think the answer is B

Ans 14:

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

Ans 15:

Class : Class 5

Ans 16:

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 9

Ans 18:

Class : Class 7
BBBB IS THE ANSWER

Ans 19:

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 20:

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 21:

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 22:

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

Ans 23:

Class : Class 7
the answer is B.

Ans 24:

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

Ans 25:

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 26:

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 27:

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)🤦‍♂️🤦‍♂️

Ans 28:

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 29:

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

Ans 30:

Class : Class 2
ddddddd

Ans 31:

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

Ans 32:

Class : Class 9
B is the correct answer

Ans 33:

Class : Class 4
I think B is the correct answer

Ans 34:

Class : Class 7
B is the answer!

Ans 35:

Class : Class 5

Ans 36:

Class : Class 5
It is certainly B as ashes of any organic matter makes soil fertile.

Ans 37:

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

Ans 38:

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

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Subject :NSO    Class : Class 7

Ans 1: (Master Answer)

Class : Class 1
The correct answer is A.

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
ANSWER-C

Ans 2:

Class : Class 8
Answer: C

Ans 3:

Class : Class 8
Answer: C

Ans 4:

Class : Class 6
C

Ans 5:

Class : Class 5
Answer-C

Ans 6:

Class : Class 9

Ans 7:

Class : Class 5
answer b

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Subject :NSO    Class : Class 9

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Subject :NSO    Class : Class 9

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