National Science Olympiad Forum By SOF Olympiad Trainer

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4

Ans 2:

Class : Class 5
why not decantaion and evaporation.

Ans 3:

Class : Class 4
why not decantaion and evaporation.

Ans 4:

Class : Class 4
Evaporation can also differentiate salt and water after removing sand by filtration right? Evaporation will differentiate as salt will stay back and water will evaporate.

Ans 5: (Master Answer)

Class : Class 1
The correct answer is A.

Ans 6:

Class : Class 4
SOF SOF and master answerPlease give me the answer

Ans 7:

Class : Class 3

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
SOF HAS MADE MISTAKES IN MANY QUESTIONS...........CORRECT ANS. IS C

Ans 2:

Class : Class 7
the sol. given by sof is wrong as stated in above comment...correct answer is (c)

Ans 3:

Class : Class 7
C is the correct answer we don't understand how the team is making these mistakes

Ans 4:

Class : Class 8
Answer is C, don't worry people.

Ans 5:

Class : Class 8
correct ans. is 'C'.

Ans 6:

Class : Class 8

Ans 7:

Class : Class 7
As in winter land get cool faster than sea the air above the sea became hot and rises up and the air from the land rushes to take its place. So in this way in winter the air blow from land to sea and (c) is the correct answer.

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
ans D

Ans 2:

Class : Class 8
i think the answer is d

Ans 3:

Class : Class 8
The answer given is c. I don’t understand how.

Ans 4:

Class : Class 7
D

Ans 5:

Class : Class 7
How can the answer be c? Doesn't seem satisfying

Ans 6:

Class : Class 8
i think ans is d

Ans 7:

Class : Class 7
d

Ans 8:

Class : Class 8
Answer is D don't worry people.

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Subject :NSO    Class : Class 8

A habitat change may result in the decline of the numbers of a given species. Such species slowly become P. This means that the species are on the verge of becoming Q. Some animals whose number has gone down to critically low levels are called R. A species is considered S when no member of the species is still alive. Which of the following is correct sequence for P, Q, R and S in the above paragraph.

AP – Vulnerable, Q – Endemic, R – Extinct, S – Endangered
BP – Endangered, Q – Vulnerable, R – Threatened, S – Extinct
CP – Vulnerable, Q – Endangered, R – Critically endangered, S – Extinct
DP – Endangered, Q – Critically endangered, R – Extinct, S – Vulnerable


How come the answer is B? According to Red Data book, Those species which are critically under the threat of being extinct are called Critically Endangered Species. Threatened Species are those which are under threat of being endangered if factors responsible for their lessening continue.

Ans 1:

Class : Class 8
correct option:B

Ans 2:

Class : Class 8

Ans 3:

Class : Class 8
b

Ans 4:

Class : Class 8
It is C because i even googled it... so the ans is C not B

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 7
c should be the answer

Ans 2:

Class : Class 4
c is the correct answer

Ans 3:

Class : Class 5

Ans 4:

Class : Class 7
C should be correct as the option D is advisable.

Ans 5:

Class : Class 5
C is correct

Ans 6:

Class : Class 5

Ans 7:

Class : Class 5
C is correct big mistake here

Ans 8:

Class : Class 7
ANSWER: C

Ans 9:

Class : Class 6
Yes, it should be C.

Ans 10:

Class : Class 6
C is right

Ans 11:

Class : Class 5
And:D

Ans 12:

Class : Class 5
C should be correct.

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6

Ans 2:

Class : Class 7
option d is the right answer. this is not possible as speed of particles increases when space between them increases .

Ans 3:

Class : Class 6
explain

Ans 4:

Class : Class 7

Ans 5:

Class : Class 5
And:c

Ans 6:

Class : Class 7

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
As ground apply frictional force on the horse. As it is not easy to run on rough area as compared to smooth area because smooth area apply less frictional force.

Ans 2:

Class : Class 8

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
Ans. A

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Subject :NSO    Class : Class 7

Ans 1: (Master Answer)

Class : Class 1
The correct answer is D.

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Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

Class : Class 1
The correct answer is C.

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