National Science Olympiad Forum By SOF Olympiad Trainer - Page 679

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
I think the answer should be c

Ans 2:

Class : Class 1

Ans 3:

Class : Class 5
C

Ans 4:

Class : Class 7
C

Ans 5:

Class : Class 7
Wheel and axle concept is different from pulley concept. While using screw driver, screwdriver is the axis and the hand turning it, is like a wheel.

Ans 6:

Class : Class 5

Ans 7:

Class : Class 4
Crane has wheels on bottom

Ans 8:

Class : Class 9
Ans:C

Ans 9:

Class : Class 5

Ans 10:

Class : Class 8

Ans 11:

Class : Class 6
ans should be C

Ans 12:

Class : Class 8
CCCCCC

Ans 13:

Class : Class 5

Ans 14:

Class : Class 1
Ccccccc

Ans 15:

Class : Class 3
I think correct answer is d

Ans 16:

Class : Class 5
Ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 17:

Class : Class 8
correct answer is C

Ans 18:

Class : Class 4
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
But arent all the 4 statements correct???

Ans 2:

Class : Class 8
Explain

Ans 3:

Class : Class 7
ONLY STATEMENT 3 IS CORRECT

Ans 4:

Class : Class 5

Ans 5:

Class : Class 10
i think b is the answer.

Ans 6:

Class : Class 4
i agree

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4

Ans 2:

Class : Class 10
can be option b

Ans 3:

Class : Class 4
for speed of car to reach at bottom, gravity, weight of car and slope surface with friction of wheel n ramp all are important

Ans 4:

Class : Class 8
Yes I agree with Soumya Bajaj

Ans 5:

Class : Class 2

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
How on EARTH is it B???You see, potato is NOT A ROOOOOT!!! IT IS A STEM!Argh

Ans 2:

Class : Class 9
mine is write

Ans 3:

Class : Class 10
I think it is not potato but sweet potato so answer will be B

Ans 4: (Master Answer)

Class : Class 1
The correct answer is B.

Ans 5:

Class : Class 7
The question is controversial, potatoes are more common than sweet potatoes, so it would make sense to understand it as potato and hence, the method of reproduction is tubers. The answer should be D.

Ans 6:

Class : Class 10
Potato is tuber not root

Ans 7:

Class : Class 7
What the Fuck This is completely Controversial

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 9
Ans : A

Ans 2:

Class : Class 3
nice question

Ans 3:

Class : Class 3
CHEATING

Ans 4:

Class : Class 9
HOW?

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 7
additionoftopandbottomnumbersresultinleftandrightnumberssosolutioniswrong.

Ans 2:

Class : Class 3
Logic is - Central numbers are increasing in order .... 2...3...4 In first and second figures... Addition of left and right numbers = Addition of top and bottom numbers Means......... In fig1... 2+6 = 5+3 = 8 In fig2... 7+2 = 4+5 = 9 Therefore.... In fig3... 7+3 = 2+8 = 10 Hence the answer is B

Ans 3:

Class : Class 3
can you explain the answer with out a complicated way

Ans 4:

Class : Class 1

Ans 5:

Class : Class 4
Thank you very much Sarthak

Ans 6:

Class : Class 7
This is with also math, so if you go to IMO with respect , you can do great!

Ans 7:

Class : Class 7
Addition of top

Ans 8:

Class : Class 3
can sombody explain the firt question

Ans 9:

Class : Class 3
can you explain the first answer please?

Ans 10:

Class : Class 9
Let’s observe the first two sets of numbers (P and Q) carefully, and then try to find the missing number in the 3rd set (R). Let’s take Set P first. Let’s add all the numbers. 2 5 2 3 6 = 18 Now, let’s take Set Q. Again, add all the numbers. 7 4 3 5 2 = 21 Set Q – Set P = 21 – 18 = 3 That means there is a difference of 3 between the total of Set P and Set Q. We can suppose there will be difference of 3 between the total of Set Q and Set R. So, the total of Set R should be Set R – Set Q = 3 Set R – 21 = 3 Or, Set R = 3 21 = 24 Let’s add the numbers in Set R. 7 2 4 8 ? = 24 21 ? = 24 ? = 24 – 21 = 3 Hence, the right answer is Option B.

Ans 11:

Class : Class 4
can somebody explain this question .... why is the ans 3... which number pattern is followed

Ans 12:

Class : Class 7
Addition of top

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