National Science Olympiad Forum By SOF Olympiad Trainer

User Forum

Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
Option D is the right answer. The Solution also tells the same then how can they say our answer is wrong?? Try putting this question in the "ERROR" box

Ans 2:

Class : Class 7
but the question says to choose incorrect answer

Ans 3:

Class : Class 7
Option D

Ans 4:

Class : Class 8
The answer has to be D because they have asked for the incorrect option

Ans 5:

Class : Class 7
Q also can be cockroach. Thus in my OPINION C can also be the answer

Ans 6:

Class : Class 7
Answer is C

Ans 7:

Class : Class 7
eplanation given is correct but answer is option d

Ans 8:

Class : Class 2
answer should be A. They have asked for the INCORRECT OPTION and A is incorrect. Earthworm uses skin not trachea. The answer is A. It also appears in my solution

Ans 9:

Class : Class 7
Forget about the Option C. Option D is the right answer.

Ans 10:

Class : Class 8
Answer should be D. Solution provided by them says so too.

Ans 11:

Class : Class 8
Its Option D

Ans 12:

Class : Class 7
Wrong answer provided . Even the solution says answer d

Post Your Answer

Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
The correct answer is option B . A compass may be used to find East and west direction . Once you find North and South , by facing north , the right side will be East and left one will be West

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
no volcano had erupted on Venus in the past 2.5 million years so 2 is the only correct option

Ans 2:

Class : Class 7
as per Wikipedia no volcano had erupted on Venus in the past 2.5 million years so 2 is the only correct option

Ans 3:

Class : Class 4
2 and 4 is the answer to this question

Post Your Answer

Subject :NSO    Class : Class 5

Study the given passage.
X, Y and Z are different parts of the brain. X controls musculo-skeletal movement, Y controls learning ability and memory and Z controls activities such as breathing, heartbeat and blood circulation. Identify X, Y and Z and select the incorrect statement regarding them.

AX is the largest part of the brain whereas Z connects the brain to spinal cord.
BY is the upper part of brain also controls our sense organs.
CZ is also called brain stem and it works even when we are asleep.
DX is located below Y towards the back of the brain.


Ans 1:

Class : Class 5
Both A and C are correct

Ans 2:

Class : Class 6
cerebrum is the largest part of the brain. cerebellum is the second largest part and it controls musculo-skeleton movement

Ans 3:

Class : Class 6
this question is wrong

Ans 4:

Class : Class 4
B is the answer to this question but it is showing A as correct option and it is showing B as correct option in the solutions.

Ans 5:

Class : Class 7
This question is correct

Ans 6:

Class : Class 4

Ans 7:

Class : Class 7
THERE CHECKING IS WRONG AS ANSWER IS C

Ans 8:

Class : Class 6
Correct answer should be d because cerebellum is below cerebrum, located towards the back of the brain.

Post Your Answer

Subject :NSO    Class : Class 3

Which of the following holds true for water transport?
1. It provides door to door service.
2. Perishable goods like milk, fruits and vegetables are quickly carried by it.
3. It is very useful for transporting heavy and bulky goods.
4. It is a better mode of transportation for petroleum and its products as it involves crosscontinental transfers.
5. It is very useful at the time of natural or any other calamities for saving people or supplying goods of their basic requirements immediately.

A 3 and 4
B 1, 2 and 5
C 2, 3 and 4
D 4 and 5


Ans 1:

Class : Class 3
A

Ans 2:

Class : Class 1
A

Post Your Answer

Subject :NSO    Class : Class 6

Ans 1:

Class : Class 4
Given correct answer and explanation do not match...please rectify...

Ans 2:

Class : Class 8

Ans 3:

Class : Class 7
What is this? Answer and solution are completely different, they are not matching!

Ans 4:

Class : Class 2

Ans 5:

Class : Class 7
YES , their answer is not matching with their solution !!

Ans 6:

Class : Class 6
The ans is not matching!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 7:

Class : Class 6
The answer does not match with the solution. There should be a change in the answer.

Ans 8:

Class : Class 6
Although the explanation is correct, it does not match the answer

Ans 9:

Class : Class 4

Ans 10:

Class : Class 5

Ans 11:

Class : Class 7
why arent they changing the answer

Ans 12:

Class : Class 8
please explain. your solution doesn't match the correct answer provided by you.

Ans 13:

Class : Class 8
clear objection

Ans 14:

Class : Class 6
The option selected here is wrong.

Ans 15:

Class : Class 7

Ans 16:

Class : Class 3

Ans 17:

Class : Class 6

Ans 18:

Class : Class 8
yes !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 19:

Class : Class 6
NA

Ans 20:

Class : Class 7
they aren't giving the answer and the solution same in some papers

Ans 21:

Class : Class 8
ayush u are right!!!!!!!!!!!!!!!

Post Your Answer

Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8
the answer is wrong

Ans 2:

Class : Class 7
The answer is wrong. It is 0.2

Ans 3:

Class : Class 7
wrong answer. should be 0.2s

Ans 4:

Class : Class 7
The answer seems to be wrong. 5 seconds to complete 25 oscillations. That means for one oscillation it is 5/25 = 0.2 seconds. 'Period' usually means one complete oscillation that is 0.2 seconds and that is not given.

Ans 5:

Class : Class 8
answer is wrong it should be 0.2 s

Ans 6:

Class : Class 8
According to definition - answer would be 0.2 s

Ans 7:

Class : Class 8
the answer is wrong , it should be 0.2s. please kindly provide the solution to this question.

Ans 8:

Class : Class 4
Answer is wrong

Ans 9:

Class : Class 6
According to definition - answer would be 0.2 s

Ans 10:

Class : Class 6
The answer should be 0.2 s

Ans 11:

Class : Class 6
The answer has to be 0.2 seconds(5/25). Pls correct

Ans 12:

Class : Class 8
please explain the answer

Ans 13:

Class : Class 7

Ans 14:

Class : Class 6

Ans 15:

Class : Class 7
I THINK IT COMPLETES 25 OSCILLATIONS IN 5s

Ans 16:

Class : Class 8
I think this answer is wrong. It should be 0.2 seconds, according to the definition of a Time Period in oscillatory motion.

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
C

Ans 2:

Class : Class 6

Ans 3:

Class : Class 5

Post Your Answer

Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8
option b is the correct answer

Ans 2:

Class : Class 7

Ans 3:

Class : Class 8
option a

Ans 4:

Class : Class 6

Ans 5:

Class : Class 7
Option B

Post Your Answer

Subject :NSO    Class : Class 4

Post Your Answer