National Science Olympiad Forum By SOF Olympiad Trainer - Page 626

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Subject :NSO    Class : Class 2

Ans 1:

Class : Class 4
B

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5

Ans 2:

Class : Class 4

Ans 3:

Class : Class 4
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC

Ans 4:

Class : Class 8
correct answer is C

Ans 5:

Class : Class 4

Ans 6:

Class : Class 1

Ans 7:

Class : Class 5
C

Ans 8:

Class : Class 6
CCCCCC

Ans 9:

Class : Class 6
ans should be C

Ans 10:

Class : Class 7
C

Ans 11:

Class : Class 1
Ccccccc

Ans 12:

Class : Class 7

Ans 13:

Class : Class 9
Ans:C

Ans 14:

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 15:

Class : Class 5
I think the answer should be c

Ans 16:

Class : Class 6
I think correct answer is d

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 4

Observe the given figure and read the following passage regarding it. As Sushil pushes the carton up the ramp, 'P' energy from the food that Sushil has eaten changes into 'Q' energy of the carton. When the carton reaches the deck of the lorry, this energy is stored in the carton as 'R' energy. However, some of the energy from Sushil is lost as 'S'. Select the correct statements regarding energies P, Q, R and S.
Statements :
1. S makes us feel warm.
2. P energy is ultimately derived from solar energy.
3. The faster an object moves, the greater is R energy.
4. The higher the object is, the more Q it has.


A2 and 4 only
B1 and 2 only
C3 and 4 only
D2 and 3 only


i think b is the answer.

Ans 1:

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

Ans 2:

Class : Class 7
ONLY STATEMENT 3 IS CORRECT

Ans 3:

Class : Class 10
i think b is the answer.

Ans 4:

Class : Class 7
Explain

Ans 5:

Class : Class 5

Ans 6:

Class : Class 4
i agree

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 2

Ans 2:

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 3:

Class : Class 7
Yes I agree with Soumya Bajaj

Ans 4:

Class : Class 4

Ans 5:

Class : Class 10
can be option b

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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

A teacher showed the following plants to students and asked them to write their methods of reproduction.

Given below are answers written by the students :
Student P:W, X and Y propagate vegetatively through stem.
Student Q:W and X are rhizomes which propagate vegetatively through roots.
Student R:Z is called bulbil which propagates vegetatively through stem.
Student S:Y vegetatively propagates through roots.Which students wrote the correct answer?

AStudents P and S
BOnly Student S
CStudents Q and R
DOnly Student Q


Ans 1: (Master Answer)

Class : Class 1
The correct answer is B.

Ans 2:

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

Ans 3:

Class : Class 10
Potato is tuber not root

Ans 4:

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

Ans 5:

Class : Class 7
What the Fuck This is completely Controversial

Ans 6:

Class : Class 9
mine is write

Ans 7:

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.

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
CHEATING

Ans 2:

Class : Class 6
HOW?

Ans 3:

Class : Class 3
nice question

Ans 4:

Class : Class 9
Ans : A

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