National Science Olympiad Forum By SOF Olympiad Trainer - Page 661

User Forum

Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7
in short words this was easy

Ans 2:

Class : Class 8
thanks admin for the explanation

Ans 3:

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

Ans 4: (Master Answer)

Class :
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 5:

Class : Class 9
WHAT IS THE CLASS THIS IS LIKE MATHS

Ans 6:

Class : Class 10
i did not understand the question

Ans 7:

Class : Class 9
WHAT IS THE CLASS THIS IS LIKE MATHS

Ans 8:

Class : Class 7
the ans will be c

Ans 9:

Class : Class 8

Post Your Answer

Subject :NSO    Class : Class 6

Ans 1:

Class :

Ans 2:

Class : Class 9

Ans 3:

Class : Class 9

Ans 4:

Class : Class 10
The answer should be (d),not (c).

Ans 5:

Class : Class 7

Ans 6:

Class : Class 7
ty

Ans 7:

Class :
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 8:

Class : Class 6
c

Ans 9:

Class : Class 8

Ans 10:

Class :
c

Ans 11:

Class : Class 10

Ans 12:

Class : Class 7
The answer is c

Ans 13:

Class : Class 8

Ans 14:

Class : Class 7
c

Ans 15:

Class : Class 10

Ans 16:

Class : Class 7
c

Ans 17:

Class : Class 9
Can anyone explain what 'inorganic elements' are?

Ans 18:

Class : Class 9
c

Ans 19:

Class : Class 9
C is correct

Ans 20:

Class : Class 7

Post Your Answer

Subject :NSO    Class : Class 6

Ans 1: (Master Answer)

Class :
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 :
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.

Post Your Answer

Subject :NSO    Class : Class 7

Ans 1:

Class :
The answer is C!!!

Ans 2:

Class :
The answer is C!!!

Ans 3: (Master Answer)

Class :
Kindly mention your query

Ans 4:

Class : Class 7
THE ANS IS B

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
the answer is B

Ans 2:

Class : Class 8
ANSWER IS B

Ans 3:

Class : Class 7
it is saying select the correct option for me

Ans 4:

Class : Class 8

Ans 5:

Class : Class 6
b

Ans 6:

Class : Class 8

Ans 7:

Class :
B

Ans 8:

Class : Class 9
How is it B, we are just learning in school abt germs and diseases and it doesn’t say anything abt diabetes caused by polluted, this is answer is wrong

Ans 9:

Class : Class 5
how is diabetes caused through dirty or polluted water?

Ans 10:

Class : Class 9

Ans 11:

Class : Class 7
Tricky , hard and somewhat funny .

Ans 12:

Class : Class 6
I KNEW ABOUT TYPHOID AND CHOLERA BUT I didn't Knew about diabetes

Ans 13:

Class : Class 7

Ans 14:

Class : Class 8

Ans 15:

Class : Class 7
B is the answer to this question

Ans 16:

Class : Class 4
B

Ans 17:

Class : Class 5
The answer is D A-It is false B- Typhoid and cholera are caused by polluted water, but diabetes isnt. C- It is true that organic and inorganic pollutants cause dissolved oxygen level to decrease D- Agricultural runoffs can contaminate both groundwater and surface water

Ans 18:

Class : Class 5

Ans 19:

Class : Class 4
it should be D

Ans 20:

Class : Class 5
best

Ans 21:

Class : Class 9

Ans 22:

Class : Class 4
confussing

Ans 23:

Class : Class 8

Ans 24:

Class : Class 4
not B for sure as diabetes is not caused due to water pollution

Ans 25:

Class : Class 8
The question says choose the 'Incorrect' option

Ans 26:

Class : Class 5
ans b

Ans 27:

Class : Class 7
B is the answer to this question

Ans 28:

Class : Class 9
It is B as the question is "Select the INCORRECT option"Diabetes is not cased by water pollution so the answer is B

Ans 29:

Class : Class 7
B

Ans 30:

Class : Class 9

Ans 31:

Class : Class 9
B

Post Your Answer

Subject :NSO    Class : Class 3

Ans 1:

Class : Class 5

Ans 2:

Class : Class 1
many questions are wrong sof some children will think that is only correct and get less marks due to your fault .

Ans 3:

Class : Class 7
Admin ka bacha it is a

Ans 4: (Master Answer)

Class :
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 5:

Class : Class 9
SAIKARAN and kailash patra, you are right . SOF , check your book (if you have any left) .

Ans 6:

Class : Class 9
answer should be A.

Ans 7:

Class : Class 6
In the book it is given a as answer, then why b in trainer why why why?

Ans 8:

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

Ans 9:

Class : Class 4
a

Ans 10:

Class : Class 1
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 11:

Class :
But in the book its a

Ans 12:

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

Ans 13:

Class : Class 5
no lack of food and air we die

Ans 14:

Class : Class 5

Ans 15:

Class : Class 8
Air , water and food are essential for living things to survive on Earth. Therefore, in the absence of anyone of these an organism will die. Hence, the the grasshopper will die in the absence of air and food although water was provided in the sealed glass tank. Hence, option(b) is the correct answer.🦗

Ans 16:

Class : Class 3
rrrrrrrrrrrrriight for meee

Ans 17:

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

Ans 18:

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 19:

Class : Class 1
The correct answer is A.

Post Your Answer

Subject :NSO    Class : Class 8

Ans 1:

Class :
A

Ans 2:

Class :

Ans 3:

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

Ans 4:

Class :
The correct option is B

Ans 5:

Class :
The correct option is B

Ans 6:

Class :
The correct option is B

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
Due to deficiency of Calcium.

Post Your Answer

Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8
No, i think it's c

Ans 2:

Class : Class 9
the answer is C

Ans 3:

Class :
Answer should be C as excess food is wastage.

Ans 4:

Class : Class 10
No, the answer for this is C and D .reason for answer D is excess of food leads to loss of nutrients especially Vitamin C. answer C because it is necessary to preserve pulses, grains otherwise they will rot.

Post Your Answer

Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7
Correct answer is D

Ans 2:

Class : Class 7
dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd

Ans 3:

Class : Class 7

Ans 4:

Class : Class 7

Ans 5:

Class : Class 8

Ans 6:

Class : Class 7
b can also be the answer

Ans 7:

Class : Class 7
sorry for my wrong answer

Ans 8:

Class : Class 6

Post Your Answer