National Science Olympiad Forum By SOF Olympiad Trainer - Page 710

User Forum

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 9
I think the answer is B

Ans 2:

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

Ans 3:

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 4:

Class : Class 2
ddddddd

Ans 5:

Class : Class 7

Ans 6:

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 7:

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

Ans 8:

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 9:

Class : Class 7
B is the answer!

Ans 10:

Class : Class 6
B should be the correct answer

Ans 11:

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

Ans 12:

Class : Class 9

Ans 13:

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

Ans 14:

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 15:

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 16:

Class : Class 5

Ans 17:

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

Ans 18:

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

Ans 19:

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

Ans 20:

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 21:

Class : Class 9
B is the correct answer

Ans 22:

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 23:

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 24:

Class : Class 7
BBBB IS THE ANSWER

Ans 25:

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 26:

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

Ans 27:

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 28:

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

Ans 29: (Master Answer)

Class : Class 1

Ans 30:

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

Ans 31:

Class : Class 4
I think B is the correct answer

Ans 32:

Class : Class 7
The answer should be B.

Ans 33:

Class : Class 6
the answer is B.

Ans 34:

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 35:

Class : Class 5

Ans 36:

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

Ans 37:

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

Post Your Answer

Subject :NSO    Class : Class 7

Ans 1: (Master Answer)

Class : Class 1
The correct answer is A.

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 8
Answer: C

Ans 2:

Class : Class 5
ANSWER-C

Ans 3:

Class : Class 6
C

Ans 4:

Class : Class 5
Answer-C

Ans 5:

Class : Class 5
answer b

Ans 6:

Class : Class 8
Answer: C

Ans 7:

Class : Class 9

Post Your Answer

Subject :NSO    Class : Class 9

Post Your Answer

Subject :NSO    Class : Class 9

Post Your Answer

Subject :NSO    Class : Class 9

Post Your Answer

Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8
option d is the correct answer

Ans 2:

Class : Class 6
The answer is (c) Condition 1- There should be an area which includes all the shapes [options (b), (c) and (d) satisfy this condition] Condition 2- There should be an area which includes only the circle and triangle [only option (c) satisfies this condition] Therefore option (c) is correct

Post Your Answer

Subject :NSO    Class : Class 4

Ans 1:

Class : Class 8
Not all things will be written in the synopsis you have to read something from the book also.D option is correct.

Ans 2:

Class : Class 9
I DONT UNDERSTAND WHY IS IT D

Ans 3:

Class : Class 6
you cant lift a car by your hands but you can when you are far so you cant lift the stone when you are near but you can lift it when you are far

Ans 4:

Class : Class 4
I DONT KNOW

Ans 5:

Class : Class 4

Ans 6:

Class : Class 9
option D

Ans 7:

Class : Class 9
The solution is correct . The correct answer is D

Ans 8:

Class : Class 7
What is this?Well,the synponis does not say anything like this.How do you know?And Harry (Potter), I think you should really provide explanations when you say something like this.I think you don't provide explanations ever.

Ans 9:

Class : Class 6
It should be d not b

Ans 10:

Class : Class 8
See this Refer to the solution

Ans 11:

Class : Class 8
[url=http://ashematme.ru]ashematme.ru[/url]

Ans 12:

Class : Class 8
the answeer has been changed to D so please stop fighting especially Monica Sharma !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 13:

Class : Class 7
THE ANSWER IS THE OPTION D

Ans 14:

Class : Class 5
I agree option D

Ans 15:

Class : Class 2
It is D. Imagine it this way. There is a heavy rock on the seesaw and we sit closer to the middle. It will be hard for us to go down and rock up. But if we sit at the edge of the seesaw, we will go down and the seesaw will go up.

Ans 16:

Class : Class 4
ans is d

Ans 17:

Class : Class 9
The correct answer is D

Ans 18:

Class : Class 7

Post Your Answer

Subject :NSO    Class : Class 6

Ans 1:

Class : Class 9
It should be (b) because (c) shows that there is no shadow at noon, however even in summer, there is a small shadow at noon. Therefore the answer should be (b).

Ans 2:

Class : Class 6
The answer should be C.

Ans 3:

Class : Class 4
Why C is incorrect answer? During Summer month at noon there will be shadow exactly under feet.

Ans 4:

Class : Class 8
I suppose that option'B' is the correct answer. If my thinkings are wrong, then please kindly make me understand with a reason i understand in simple words. If my answer is correct then please, please, please comment on it. My goal here is not to give long lectures, but to find the correct answer to this question.

Ans 5:

Class : Class 9
yes c is correct kindly rectify

Ans 6:

Class : Class 7

Post Your Answer

Subject :NSO    Class : Class 2

Ans 1:

Class : Class 8
why is a the answer because they are crossing the road without looking

Ans 2:

Class : Class 6
A

Ans 3:

Class : Class 8
A

Post Your Answer