National Science Olympiad Forum By SOF Olympiad Trainer - Page 662

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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 9

Ans 3:

Class : Class 3
HE DID NOT EXPLAIN.

Ans 4:

Class : Class 3
NA

Ans 5:

Class : Class 3

Ans 6:

Class : Class 7

Ans 7:

Class : Class 9
C

Ans 8:

Class : Class 3

Ans 9:

Class : Class 3
It should be D

Ans 10:

Class : Class 2

Ans 11:

Class : Class 3
c is the correct answer

Ans 12:

Class : Class 5
abcd are correct

Ans 13:

Class : Class 9
c is the ans

Ans 14:

Class : Class 4
c maybe????

Ans 15:

Class : Class 9
kunal is wrong

Ans 16:

Class : Class 1
D HE GAVE EXPLANATION

Ans 17:

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

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 8
all of these option(D)

Ans 2:

Class : Class 8
D is correct

Ans 3:

Class : Class 6
D

Ans 4:

Class : Class 8
A is not correct D is correct

Ans 5:

Class : Class 9
A

Ans 6:

Class : Class 6
All of these

Ans 7:

Class : Class 1
d and Gaurika actually chocolate contains fats

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 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 10:

Class : Class 5

Ans 11:

Class : Class 3
all of these

Ans 12:

Class : Class 9
D

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 10

Ans 2:

Class : Class 9
D

Ans 3:

Class : Class 10

Ans 4:

Class : Class 9

Ans 5:

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

Ans 6:

Class : Class 7
I feel that it is D

Ans 7:

Class : Class 8

Ans 8:

Class : Class 8
Definitely D

Ans 9:

Class : Class 10
The amount of water also matters right

Ans 10:

Class : Class 8
D

Ans 11:

Class : Class 5

Ans 12:

Class : Class 6

Ans 13:

Class : Class 8
Option D is the correct answer

Ans 14:

Class : Class 9
I do agree it's D

Ans 15:

Class : Class 8

Ans 16:

Class : Class 7
i think amount of water also nedd

Ans 17:

Class : Class 9
d

Ans 18:

Class : Class 7
c should be the correct answer

Ans 19:

Class : Class 7

Ans 20:

Class : Class 4
Water is also correct

Ans 21:

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 22:

Class : Class 8
d is correct answer

Ans 23:

Class : Class 9
I think D is the correct answer

Ans 24:

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

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6

Ans 2:

Class : Class 6
A is the correct answer

Ans 3:

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 4:

Class : Class 8
answer is a

Ans 5:

Class : Class 6
It really should be A

Ans 6:

Class : Class 6
It should be A

Ans 7:

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 8:

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 9:

Class : Class 7

Ans 10:

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

Ans 11:

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 12:

Class : Class 7
c is the correct answer

Ans 13:

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

Ans 14:

Class : Class 5

Ans 15:

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 16:

Class : Class 6
The 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 7
Please explain it to me.

Ans 3:

Class : Class 8
Option D is correct. I dont know why. Please explain

Ans 4:

Class : Class 8

Ans 5:

Class : Class 7

Ans 6:

Class : Class 7
answer is option c

Ans 7:

Class : Class 8
ans is option C

Ans 8:

Class : Class 8

Ans 9:

Class : Class 9
can someone explain why?

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Subject :NSO    Class : Class 4

Ans 1:

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.

Ans 2:

Class : Class 5
jk kj;

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
it will be maximum near the ground

Ans 2:

Class : Class 6
As it goes up,kinetic energy decreases due to gravity while potential energy increases with height. As it comes down, kinetic energy increases due to gravity while potential energy decreases.

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
it will be maximum near the ground

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