National Science Olympiad Forum By SOF Olympiad Trainer - Page 620

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 6
C

Ans 2:

Class : Class 7
THE CORRECT ANSWER IS C

Ans 3:

Class : Class 4

Ans 4:

Class : Class 3

Ans 5:

Class : Class 5
THE CORRECT ANSWER IS C OPTION

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 3
D

Ans 2:

Class : Class 3

Ans 3:

Class : Class 9
c is the ans

Ans 4:

Class : Class 3
NA

Ans 5:

Class : Class 7
kunal is wrong

Ans 6:

Class : Class 1
D HE GAVE EXPLANATION

Ans 7:

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

Ans 8:

Class : Class 9
C

Ans 9:

Class : Class 7

Ans 10:

Class : Class 5

Ans 11:

Class : Class 3
It should be D

Ans 12:

Class : Class 5
abcd are correct

Ans 13:

Class : Class 3

Ans 14:

Class : Class 3
c is the correct answer

Ans 15:

Class : Class 4
c maybe????

Ans 16:

Class : Class 7

Ans 17:

Class : Class 3
HE DID NOT EXPLAIN.

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 6
D

Ans 2:

Class : Class 9
D

Ans 3:

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 4:

Class : Class 9
A

Ans 5:

Class : Class 1
d and Gaurika actually chocolate contains fats

Ans 6:

Class : Class 7
A is not correct D is correct

Ans 7:

Class : Class 8
all of these option(D)

Ans 8:

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 9:

Class : Class 3
all of these

Ans 10:

Class : Class 5

Ans 11:

Class : Class 7
D is correct

Ans 12:

Class : Class 6
All of these

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8
Option D is the correct answer

Ans 2:

Class : Class 7

Ans 3:

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 4:

Class : Class 7
I feel that it is D

Ans 5:

Class : Class 9
I think D is the correct answer

Ans 6:

Class : Class 8

Ans 7:

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

Ans 8:

Class : Class 10

Ans 9:

Class : Class 9
d

Ans 10:

Class : Class 9
I do agree it's D

Ans 11:

Class : Class 4
Water is also correct

Ans 12:

Class : Class 7
c should be the correct answer

Ans 13:

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

Ans 14:

Class : Class 8

Ans 15:

Class : Class 5

Ans 16:

Class : Class 9

Ans 17:

Class : Class 7
i think amount of water also nedd

Ans 18:

Class : Class 8
d is correct answer

Ans 19:

Class : Class 10

Ans 20:

Class : Class 6

Ans 21:

Class : Class 8
Definitely D

Ans 22:

Class : Class 10
The amount of water also matters right

Ans 23:

Class : Class 9
D

Ans 24:

Class : Class 8
D

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
A is the correct answer

Ans 2:

Class : Class 7

Ans 3:

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 4:

Class : Class 6
The answer is A.

Ans 5:

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 6:

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 7:

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

Ans 8:

Class : Class 6
It should be A

Ans 9:

Class : Class 5

Ans 10:

Class : Class 6

Ans 11:

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

Ans 12:

Class : Class 7
c is the correct answer

Ans 13:

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 14:

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 15:

Class : Class 6
It really should be A

Ans 16:

Class : Class 8
answer is a

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8
ans is option C

Ans 2:

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

Ans 3:

Class : Class 8

Ans 4:

Class : Class 8

Ans 5:

Class : Class 9
can someone explain why?

Ans 6:

Class : Class 7
Please explain it to me.

Ans 7:

Class : Class 9
ans is option C

Ans 8:

Class : Class 7

Ans 9:

Class : Class 7
answer is option c

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
jk kj;

Ans 2:

Class : Class 5
Not kerwa its kewra. It is an extract that is distilled from the flower of the Pandanus plant. Kewra water is very similar to rosewater. It is used to flavour South Asian cuisine.

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