National Science Olympiad Forum By SOF Olympiad Trainer - Page 620

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 8
oh yeah

Ans 2:

Class : Class 9
I agree with you Zayed

Ans 3:

Class : Class 4
In the picture there is a pattern . Between problem figure 1&2,it moves 1 step ahead.Between problem figure 2&3, it moves 2 steps ahead.Between problem figure 3&4,it moves 3 steps ahead.Between problem figure 4&5,it moves 4 steps ahead.So in the next problem figure 5&6,it will move 5 steps ahead .So the right option is-(A). It is so easy!!!!!!!!!!!!!!!!! Put your brains!!!!!

Ans 4:

Class : Class 2

Ans 5:

Class : Class 6
Who do you think you are?

Ans 6:

Class : Class 6

Ans 7:

Class : Class 5
THERE'S A WEIRD PATTERN IN THERE... in figure 1 and two they skip a figure, in figure 3 and 4 they skip two figures and so on so forth.

Ans 8:

Class : Class 7
A Add 45 degrees in subsequent figures. Add 225 deg in the fourth fig to reach at A

Ans 9:

Class : Class 6

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
THE CORRECT ANSWER IS C OPTION

Ans 2:

Class : Class 6
C

Ans 3:

Class : Class 7
THE CORRECT ANSWER IS C

Ans 4:

Class : Class 4

Ans 5:

Class : Class 3

Ans 6: (Master Answer)

Class : Class 1
The correct answer is C.

Ans 7:

Class : Class 3

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 8

Ans 2:

Class : Class 6
Ans is A because lungs send oxygen-rich blood to the heart and this oxygen-rich blood is sended to all body parts and the carbondioxide-rich blood goes back to the heart from the body this carbondioxide-rich blood is sended to the lungs.

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 9
4 th blank will be filled with fertilisation correct ans is b Pollen grains are deposited on stigma and not style

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Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Class : Class 1
The correct answer is D.

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 5

Ans 2:

Class : Class 7

Ans 3:

Class : Class 9
c is the ans

Ans 4:

Class : Class 4
c maybe????

Ans 5:

Class : Class 9
C

Ans 6:

Class : Class 7
kunal is wrong

Ans 7:

Class : Class 3
ahh... very easy answer is d

Ans 8:

Class : Class 3
HE DID NOT EXPLAIN.

Ans 9:

Class : Class 3

Ans 10:

Class : Class 3
D

Ans 11:

Class : Class 3
It should be D

Ans 12:

Class : Class 5
abcd are correct

Ans 13:

Class : Class 1
D HE GAVE EXPLANATION

Ans 14:

Class : Class 7

Ans 15:

Class : Class 3
NA

Ans 16:

Class : Class 3
c is the correct answer

Ans 17:

Class : Class 3

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 7
A is not correct D is correct

Ans 2:

Class : Class 5

Ans 3:

Class : Class 9
D

Ans 4:

Class : Class 8
all of these option(D)

Ans 5:

Class : Class 2
Fruits (2) contain minerals and vitamins and are protective food. They help in recovering from illness. Overeating of fried food (1) leads to obesity as it contains fat that gets stored in the body. Chocolates (3) contain a lot of carbohydrates which give us energy when hungry.

Ans 6:

Class : Class 5
Everyone thinks that a option is correct but it is wrong.The correct answer is d part.Everyone will think that chocolate is junk food.How can it give us the energy but chocolate contains fat.That's why when when we are hungry it gives us a lot of energy

Ans 7:

Class : Class 6
D

Ans 8:

Class : Class 6
All of these

Ans 9:

Class : Class 7
D is correct

Ans 10:

Class : Class 1
d and Gaurika actually chocolate contains fats

Ans 11:

Class : Class 3
all of these

Ans 12:

Class : Class 9
A

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 10

Ans 2:

Class : Class 10
The amount of water also matters right

Ans 3:

Class : Class 7
I feel that it is D

Ans 4:

Class : Class 5

Ans 5:

Class : Class 8
d is correct answer

Ans 6:

Class : Class 6

Ans 7:

Class : Class 9
I do agree it's D

Ans 8:

Class : Class 9
d

Ans 9:

Class : Class 8
shape of dish also should be included. Amount of water poured doesnt matter as long as you are collecting equal volume in all dishes. Hence similar dishes is important.

Ans 10:

Class : Class 8

Ans 11:

Class : Class 7
All the given factors are required for a fair test ; So option D would be the correct answer

Ans 12:

Class : Class 9
I think D is the correct answer

Ans 13:

Class : Class 8

Ans 14:

Class : Class 8
Option D is the correct answer

Ans 15:

Class : Class 8
Definitely D

Ans 16:

Class : Class 9

Ans 17:

Class : Class 9
D

Ans 18:

Class : Class 7
c should be the correct answer

Ans 19:

Class : Class 7
i think amount of water also nedd

Ans 20:

Class : Class 7
D, amount of water matters the most out of all.

Ans 21:

Class : Class 4
Water is also correct

Ans 22:

Class : Class 8
D

Ans 23:

Class : Class 10

Ans 24:

Class : Class 7

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7
A is correct because it just turns hard but it is still clay only.And also chemical change doesn't mean that it is irreversible,Chemical change means that the identity of the substance we started with is lost.Here the identity is not lost.So A is correct.

Ans 2:

Class : Class 5

Ans 3:

Class : Class 9
C,because- it is a chemical change. after baking we can break it into smaller particles but it won't form the same clay, with same properties again

Ans 4:

Class : Class 7
c is the correct answer

Ans 5:

Class : Class 7
a is the correct answer because chemical composition dose not change

Ans 6:

Class : Class 6
Yes ,Because chemical means change in the properties but there is no change .The answer is A

Ans 7:

Class : Class 7

Ans 8:

Class : Class 6
It really should be A

Ans 9:

Class : Class 6

Ans 10:

Class : Class 6
It should be A

Ans 11:

Class : Class 6
on heating, the clay pot doesn't turn into stone,right?it doesn't change composition once heated , it is still clay ! answer is "A"

Ans 12:

Class : Class 6
A is the correct answer

Ans 13:

Class : Class 6
IF WE SHARP A PENCIL IT IS A PHYSICAL IRREVERSIBLE CHANGE .SO,IF WE HEAT A POT IS PHYSICAL IRREVERSIBLE CHANGE. BUT IT COULD HAPPEN THAT THE COMPOSITION OF CLAY MIGHT CHANE BECAUSE OF HEATING AS THE MOLECULES STICK TO EACH OTHER

Ans 14:

Class : Class 6
C because we can get clay back from a wet pot by smashing it,but once it heats up, it dries the clay and makes it stone hard.

Ans 15:

Class : Class 6
The answer is A.

Ans 16:

Class : Class 8
answer is a

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 9
ans is option C

Ans 2:

Class : Class 8

Ans 3:

Class : Class 7

Ans 4:

Class : Class 8
ans is option C

Ans 5:

Class : Class 7
Option D is correct. I dont know why. Please explain

Ans 6:

Class : Class 8

Ans 7:

Class : Class 7
answer is option c

Ans 8:

Class : Class 9
can someone explain why?

Ans 9:

Class : Class 7
Please explain it to me.

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