National Science Olympiad Forum By SOF Olympiad Trainer - Page 617

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 9
c

Ans 2:

Class : Class 6
I couldn't even scorl

Ans 3: (Master Answer)

Class : Class 1

The correct answer is C

Gases do not have a fixed shape and are compressible, liquids also do not have fixed shape but cannot be compressed as they have a fixed volume. Solids have fixed shape, fixed volume and can either float or sink in water depending upon their density.


Ans 4:

Class : Class 3

Ans 5:

Class : Class 9

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
The answer is B

Ans 2: (Master Answer)

Class : Class 1

The correct answer is B - Gibbous


Ans 3:

Class : Class 7
B

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 8

Ans 2:

Class : Class 4
i am a genius

Ans 3:

Class : Class 4
I AM IN CLASS 10TH BUT IT IS WRITTEN WRONG SO SORRY [IT IS WRITTEN CLASS 3RD]

Ans 4:

Class : Class 4
Aq1wwwwwwwwwwwwwww

Ans 5:

Class : Class 4
TRH J3we]ART68 [PL;[0]'1;LPO; [KOREN]YUL

Ans 6:

Class : Class 3
but I think small one

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 2

Ans 1: (Master Answer)

Class : Class 1

The correct answer is A.

Count the number of total balls = 21
Count the number of crossed balls = 6
So, the subtraction sentence will be 21 - 6.
Now make the subtraction sentences for all options:
(A) 2 tens 1 one - 6 ones = 21 - 6 
(B) 2 tens 2 ones - 6 ones = 22 - 6 
(C) 2 tens - 6 ones = 20 - 6
(D) 2 tens 3 tens - 6 ones = 23 - 6


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Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Class : Class 1

The correct answer is B.

Total Smileys = 56
Green Smileys = 8
Fraction of Green Smileys = 8/56 = 1/7


Ans 2:

Class : Class 9
It will be 8/56,every answer is wrong because its a proper fraction so 8/56=8/56

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 8

Ans 2:

Class : Class 10
Stem is also correct for some plants like mint ,

Ans 3:

Class : Class 4
I think it is seed only because if the other parts will no be there than how the previous plant will grow

Ans 4:

Class : Class 5
Deepayan and Sumit are right..of course it is d, if there are no leaves the plant will die, how is it going to reproduce then??

Ans 5:

Class : Class 5
c) WHY? Here it goes:How will it reproduce without flowers?Ideally? Leaves? Does cactus have leaves? Nope! It has leaves -2 - spines...

Ans 6:

Class : Class 6
the answer is d as many plants don't have flowers but still reproduce. Without the leaves, the plants can't make food.

Ans 7:

Class : Class 5
WE HAVE READ THAT THEY CAN GROW WITHOUT FLOWERSIF THEY HAVE NOT FLOWERS THEY GROW IN A DIFFERENT MANNERVERY STUPID OF SOFSO MANY ERRORSWHAT EVER CORRECT OPTION IS D

Ans 8:

Class : Class 5

Ans 9:

Class : Class 5
Think the correct ans'rs C Cause a flower changes into a fruit in the fruit then bears seads which give rise to new plants on being down in soil. That's what I think don't know if it is right!!!

Ans 10:

Class : Class 5
All the answers are correct. None of them are wrong.

Ans 11:

Class : Class 10
I think answer is (C) as flowers changes into fruit and fruit changes into seed.

Ans 12:

Class : Class 9
some plants can grow by vegetative reproduction which is not by flowers. Like carrots, Carrots does not have any flowers. I think the answer is D because if there are no leaves then who will make the food for the survival of the plant.

Ans 13: (Master Answer)

Class : Class 1

The correct answer is C

Flower changes into fruits and fruit bears seeds. Seeds give rise to new plants when sown into soil.


Ans 14:

Class : Class 6
In papaya plant, flower changes into fruit and fruit bears seeds. Seeds give rise to new plants when sown into the soil.

Ans 15:

Class : Class 5
Flower attract the insects for pollination,so the answer is C

Ans 16:

Class : Class 4
i pressed option c but its incorrect

Ans 17:

Class : Class 6
but seeds can reproduce through stem , leaves , and root too , can't they ???

Ans 18:

Class : Class 7
d

Ans 19:

Class : Class 5
but in some plants ther is no flower then also they can reproduce in a different manner

Ans 20:

Class : Class 6
It is not c because new plants can rise by vegetative reproduction which are not by seeds.It is by roots, stem or leaves. what, in case of byrophyllum plant.

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6

Ans 2:

Class : Class 9
It is A

Ans 3:

Class : Class 7

Ans 4:

Class : Class 9

Ans 5:

Class : Class 8
b is the answer

Ans 6:

Class : Class 3
the wax has been applied all over the rod. copper has the least amount of wax on it. So it is the best conductor of heat whereas the glass rod has the most amount of wax thus it is the weakest conductor of heat.Thus,the option "A" is the correct answer

Ans 7:

Class : Class 7
dddddddddddddddddddddddd

Ans 8:

Class : Class 9
ACCORDING TO ME THE CORRECT ANSWER IS B , FIRST WE HAVE TO UNDERSTAND THE PICTURE AND THEN ANSWER

Ans 9:

Class : Class 7
ANSWER SHOULD BE C BECAUSE FIRRST IS CORRECT BUT METALS ARE GOOD CONDUCTERS OF HEAT

Ans 10:

Class : Class 6
I too agree with you .It's B and not A

Ans 11:

Class : Class 7
The answer is 'a' because the rods are fully coated with wax, those rods which have less wax are good conductors because the wax melted and fell from it.

Ans 12:

Class : Class 8
OK

Ans 13:

Class : Class 8
why is everyone talking about wax and copper it is a question about statements and conductivity like bruh what

Ans 14:

Class : Class 7

Ans 15:

Class : Class 9
It must be 'B' not 'A'

Ans 16:

Class : Class 6
IT WILL BE DDDDDDDDDDDDDDDDDDD

Ans 17:

Class : Class 6
Sorry for giving the wrong information. At the beginning even I thought the answer was B.If you click the solution button, it says that since the copper rod has the least amount of wax on it, it is the better conductor as all the other wax on it has melted and fell down. That is why the answer is A not B

Ans 18:

Class : Class 8

Ans 19:

Class : Class 6
what is this man do something

Ans 20:

Class : Class 6
it cannot be as you have said because the wax is dripping from the glass rod whereas on the copper rod, it is as it was first placed. And they will not give us a diagram if they are going to ask something not related to it.So, the answer must be B and not A.

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Subject :NSO    Class : Class 1

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