National Science Olympiad Forum By SOF Olympiad Trainer - Page 660

User Forum

Subject :NSO    Class : Class 4

Ans 1:

Class : Class 6
C

Ans 2:

Class : Class 3

Ans 3: (Master Answer)

Class : Class 1
The correct answer is C.

Ans 4:

Class : Class 5
THE CORRECT ANSWER IS C OPTION

Ans 5:

Class : Class 4

Ans 6:

Class : Class 3

Ans 7:

Class : Class 7
THE CORRECT ANSWER IS C

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

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.

Ans 2:

Class : Class 8

Post Your Answer

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

Post Your Answer

Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Class : Class 1
The correct answer is D.

Post Your Answer

Subject :NSO    Class : Class 3

Ans 1:

Class : Class 5
abcd are correct

Ans 2:

Class : Class 4
c maybe????

Ans 3:

Class : Class 3

Ans 4:

Class : Class 3
NA

Ans 5:

Class : Class 3
HE DID NOT EXPLAIN.

Ans 6:

Class : Class 9
kunal is wrong

Ans 7:

Class : Class 3

Ans 8:

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

Ans 9:

Class : Class 7

Ans 10:

Class : Class 9
c is the ans

Ans 11:

Class : Class 3
c is the correct answer

Ans 12:

Class : Class 3
D

Ans 13:

Class : Class 1
D HE GAVE EXPLANATION

Ans 14:

Class : Class 2

Ans 15:

Class : Class 9
C

Ans 16:

Class : Class 9

Ans 17:

Class : Class 3
It should be D

Post Your Answer

Subject :NSO    Class : Class 3

Ans 1:

Class : Class 9
A

Ans 2:

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 3:

Class : Class 8
D is correct

Ans 4:

Class : Class 8
A is not correct D is correct

Ans 5:

Class : Class 1
d and Gaurika actually chocolate contains fats

Ans 6:

Class : Class 6
D

Ans 7:

Class : Class 5

Ans 8:

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 9:

Class : Class 6
All of these

Ans 10:

Class : Class 3
all of these

Ans 11:

Class : Class 8
all of these option(D)

Ans 12:

Class : Class 9
D

Post Your Answer

Subject :NSO    Class : Class 7

Ans 1:

Class : Class 9
d

Ans 2:

Class : Class 8
Option D is the correct answer

Ans 3:

Class : Class 9

Ans 4:

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

Ans 5:

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 6:

Class : Class 4
Water is also correct

Ans 7:

Class : Class 9
I do agree it's D

Ans 8:

Class : Class 7
c should be the correct answer

Ans 9:

Class : Class 8

Ans 10:

Class : Class 8

Ans 11:

Class : Class 8
Definitely D

Ans 12:

Class : Class 8
d is correct answer

Ans 13:

Class : Class 10
The amount of water also matters right

Ans 14:

Class : Class 7
i think amount of water also nedd

Ans 15:

Class : Class 9
I think D is the correct answer

Ans 16:

Class : Class 8
D

Ans 17:

Class : Class 10

Ans 18:

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

Ans 19:

Class : Class 7

Ans 20:

Class : Class 10

Ans 21:

Class : Class 9
D

Ans 22:

Class : Class 7
I feel that it is D

Ans 23:

Class : Class 6

Ans 24:

Class : Class 5

Post Your Answer

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 6
A is the correct answer

Ans 4:

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

Ans 5:

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 6:

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

Ans 7:

Class : Class 7

Ans 8:

Class : Class 6
It should be A

Ans 9:

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 10:

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 11:

Class : Class 8
answer is a

Ans 12:

Class : Class 6
It really should be A

Ans 13:

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 14:

Class : Class 6
The answer is A.

Ans 15:

Class : Class 7
c is the correct answer

Ans 16:

Class : Class 6

Post Your Answer

Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7

Ans 2:

Class : Class 8
ans is option C

Ans 3:

Class : Class 8

Ans 4:

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

Ans 5:

Class : Class 7
answer is option c

Ans 6:

Class : Class 9
ans is option C

Ans 7:

Class : Class 9
can someone explain why?

Ans 8:

Class : Class 8

Ans 9:

Class : Class 7
Please explain it to me.

Post Your Answer

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;

Post Your Answer