National Science Olympiad Forum By SOF Olympiad Trainer

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8
It's 42 guys

Ans 2:

Class : Class 7
The answer is 42!!!

Ans 3:

Class : Class 7
42

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Subject :NSO    Class : Class 10

In the following figures, optical instruments are placed inside boxes (A) and (B). Which of the following options is correct for these?


A In (A), the incident rays are diverged after refractions, so lens is concave.
B In (B), the incident rays are converged after refraction so mirror is convex.
C In (A), the incident rays are diverged after refraction so mirror is convex.
D In (B), the incident rays are converged after refraction so lens is concave.


Aren't both options A and B correct?

Ans 1: (Master Answer)

Class : Class 1
Here, the correct answer is A. In (A), the incident rays are diverged after refraction, so the lens is concave and in (B), the incident rays are converged after refraction, so the lens is convex.

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Subject :NSO    Class : Class 6

Ans 1: (Master Answer)

Class : Class 1
Here, the answer is C. Displacement is the shortest distance covered by a body. In a circular path, the distance between the initial point (Here=P) and the final point (Here=Q) will give you the displacement. Here, Shortest distance between P and Q is PO + OQ = a + a = 2a Hence, the displacement of the cyclist would be 2a.

Ans 2:

Class : Class 6
Why are there maths questions in science paper?????

Ans 3:

Class : Class 8
WHAT IS THE CLASS THIS IS LIKE MATHS

Ans 4:

Class : Class 7
the ans will be c

Ans 5:

Class : Class 7
in short words this was easy

Ans 6:

Class : Class 8
WHAT IS THE CLASS THIS IS LIKE MATHS

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
c

Ans 2:

Class : Class 6
c

Ans 3:

Class : Class 7
c

Ans 4:

Class : Class 7

Ans 5:

Class : Class 6
c

Ans 6:

Class : Class 6
Answer is C because Y is minerals.Minerals are inorganic.Excess consumption of minerals does not cause obesity.So they have told to mark incorrect answer.Therefore C is correct

Ans 7:

Class : Class 7

Ans 8:

Class : Class 6

Ans 9:

Class : Class 5
C is correct

Ans 10:

Class : Class 7
The answer is c

Ans 11:

Class : Class 4
c

Ans 12:

Class : Class 6

Post Your Answer

Subject :NSO    Class : Class 6

Ans 1: (Master Answer)

Class : Class 1
Here, the answer is B. Since in a magnetic needle the arrow head is the North Pole, it will point towards the South Pole of the left hand side magnet and the other end of the magnetic needle (i.e; South Pole) will point towards the North Pole of the right hand side magnet.This is because like poles repel and unlike poles attract each other. Hence,the polarity of the end P of the right hand side magnet is North.

Ans 2: (Master Answer)

Class : Class 1
Here, the answer is B. Since in a magnetic needle the arrow head is the North Pole, it will point towards the South Pole of the left hand side magnet and the other end of the magnetic needle (i.e; South Pole) will point towards the North Pole of the right hand side magnet.This is because like poles repel and unlike poles attract each other. Hence,the polarity of the end P of the right hand side magnet is North.

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Subject :NSO    Class : Class 7

Read the given passage carefully and answer the question

The phenomenon in which a bird or other animal moves from one place to another in one season, and returns again in a different season is called migration. It is an adaptation to escape the harsh conditions of their normal habitat so as to survive.

The __(i)__ flies from its native place in Russia to places like __(ii)__ in Rajasthan and __(iii)__ in Haryana during a particular season.

It stays in India for a few months and then goes back in __(iv)__ season. The general name given to birds like these is __(v)__ birds. Select the correct sequence of words to fill up the blanks in the above passage.

Which of the following is the probable method these migratory birds use to travel to the same place year after year?

(i) (ii) (iii) (iv) (v)
A Toucan Sultanpur Bharatpur Autumn Adaptatory
B Siberian
crane
Bharatpur Sultanpur Winter Migratory
C Arctic
tern
Bharatpur Sultanpur Spring Migratory
D Siberian
crane
Sultanpur Bharatpur Summer Adaptatory


Ans 1:

Class : Class 7
The answer is C!!!

Ans 2:

Class : Class 7
The answer is C!!!

Ans 3: (Master Answer)

Class : Class 1
Kindly mention your query

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5

Ans 2:

Class : Class 3

Ans 3:

Class : Class 5
B

Ans 4:

Class : Class 6
Tricky , hard and somewhat funny .

Ans 5:

Class : Class 5

Ans 6:

Class : Class 4
B

Ans 7:

Class : Class 4
B is the answer to this question

Ans 8:

Class : Class 3

Ans 9:

Class : Class 5
ANSWER IS B

Ans 10:

Class : Class 5
B

Ans 11:

Class : Class 3

Ans 12:

Class : Class 5

Ans 13:

Class : Class 3

Ans 14:

Class : Class 5

Ans 15:

Class : Class 5
best

Ans 16:

Class : Class 6
b

Ans 17:

Class : Class 6
the answer is B

Ans 18:

Class : Class 4
B is the answer to this question

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 4
Without air(oxygen) the grasshopper will die even food or water is given,so answer is A.

Ans 2:

Class : Class 2
a

Ans 3:

Class : Class 3
rrrrrrrrrrrrriight for meee

Ans 4:

Class : Class 4
If it is food then grasshopper will die after 2,3 days but it is writen after some times so it is a

Ans 5:

Class : Class 3
SAIKARAN and kailash patra, you are right . SOF , check your book (if you have any left) .

Ans 6:

Class : Class 3
awnser will be A because air is mch important then food and water.

Ans 7:

Class : Class 4
there are 3 things needed in life air water and food without air we die in minutes without water we die in hours without food we die in days in the picture it is given as water is given to grasshopper and in question it is given as the grasshopper is in sealed and died after some time only so no food and air is given but as i told after some time grasshopper will die due to lack of air only ans sof you can check your mtg workbook also .

Ans 8:

Class : Class 3
question is about sealed glass box,so there is no supply of oxygen,hence answer is 'a' only.

Ans 9:

Class : Class 4
The correct answer is A.

Ans 10:

Class : Class 8
Admin ka bacha it is a

Ans 11:

Class : Class 3

Ans 12:

Class : Class 4

Ans 13:

Class : Class 4
In the book it is given a as answer, then why b in trainer why why why?

Ans 14:

Class : Class 1
answer should be A.

Ans 15:

Class : Class 4
many questions are wrong sof some children will think that is only correct and get less marks due to your fault .

Ans 16: (Master Answer)

Class : Class 1
Here, the answer is B. Air, water and food are necessary for the survival of any living organism. So, in the absence of any one of these components an organism cannot survive. Hence, the grasshopper died due to the lack of air and food, although water was provided.

Ans 17:

Class : Class 3
But in the book its a

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
The correct option is B

Ans 2:

Class : Class 8
The correct option is B

Ans 3:

Class : Class 8
The correct option is B

Ans 4:

Class : Class 8

Ans 5:

Class : Class 8
The right one is option 'A'-30 mins

Ans 6:

Class : Class 8
A

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
Due to deficiency of Calcium.

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