National Science Olympiad Forum By SOF Olympiad Trainer - Page 667

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
It should be a tailorbird

Ans 2:

Class : Class 8

Ans 3:

Class : Class 5
Tailor bird that is A

Ans 4:

Class : Class 4
what????

Ans 5:

Class : Class 8
They are right it should be [B] .

Ans 6:

Class : Class 5
yes the answer is tailor bird

Ans 7:

Class : Class 6
Tailor Bird 's Nest Is Made Of 2 Leaves Not Like This One Gotcha!

Ans 8:

Class : Class 4
WHAT!!!!!! IT SHOULD BE (A).

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 10
TBH2VI http://www.LnAJ7K8QSpfMO2wQ8gO.com

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Subject :NSO    Class : Class 9

Ans 1: (Master Answer)

Class : Class 1
Alpha, Beta, Gamma in ascending order.

Alpha particles leaves the nucleus of an unstable atom at a speed of 16,000 kilometres per second, around a tenth the speed of light.
Beta particles travel at a speed of 270,000 kilometres per second, around 98% of speed of light.
Gamma particles travel at the speed of light.

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
B and Co are same. Intermolecular space is not decreasing in any of the situations. It is wrong.

Ans 2:

Class : Class 4
Option b, c are the same. Pls give me a proper explanation as to why one option is correct

Ans 3:

Class : Class 5
ALL OPTIONS ARE WRONG

Ans 4:

Class : Class 7
you are right vaibhav all are wrong

Ans 5:

Class : Class 6
All the answer is wrong. In the NSO book, it is right.

Ans 6:

Class : Class 3
I agree with Harry , 1 B AND C ARE NOT THE SAME. 2 When liquid is cooled down it forms solid, SO THE ONLY ANSWER IS CCCC

Ans 7:

Class : Class 6
There is no specific details about which one is X or Y.So by common sense I think that it would be D.But B

Ans 8:

Class : Class 6
None of the options are correct according to my doubt.

Ans 9:

Class : Class 5
SHOULD HAVE BEEN SPECIFIC WITH RESPECT TO X AND Y MARKING

Ans 10:

Class : Class 6
question, answer and solution is wrongall the options are showing the difference on heating

Ans 11:

Class : Class 4
ansAll answers oposite

Ans 12:

Class : Class 8
The question , answer and the solution are all correct … Vrishank don't say that the SOF is mad ( I think you are mad ) you are a FOOL

Ans 13:

Class : Class 7
When a substance is cooled the molecules come closer. But there is no picture showing that the molecules are coming closer there is no correct answer. Also option B and C are the same. Can you please change it?

Ans 14:

Class : Class 4
All are wrong. At least number of atoms should be same. So answer should be D

Ans 15:

Class : Class 6
PLS. CORRECT

Ans 16:

Class : Class 9
b and c are all the same

Ans 17:

Class : Class 4
all options are wrong

Ans 18:

Class : Class 7
please change the question.

Ans 19:

Class : Class 5
Options are wrong. Molecular distance should be less. first fix which column is X and Y.

Ans 20:

Class : Class 4
all Q are wrong

Ans 21:

Class : Class 6
option d maybe

Ans 22:

Class : Class 9
I also think that.Questions ,options, colums and answers didn't mentioned.

Ans 23:

Class : Class 6

Ans 24:

Class : Class 7
Please please please please please please please please change the question

Ans 25:

Class : Class 8
I think all options are wrong

Ans 26:

Class : Class 8
The correct answer is C

Ans 27:

Class : Class 7
I think al options are wrong . Please tell the correct answer

Ans 28:

Class : Class 8
all options are wrong

Ans 29:

Class : Class 5
wrong wrong wrong wrong wrong wrong

Ans 30:

Class : Class 7
The options given are wrong / confusing. Please clarify.

Ans 31:

Class : Class 8

Ans 32:

Class : Class 4
how can liquid turn into gas by freezing ? Option A does the same thing so the correct option should be D

Ans 33:

Class : Class 7

Ans 34:

Class : Class 5
The question is wrong... and so the answer is also misleading.

Ans 35:

Class : Class 2
SOF IS MAD

Ans 36:

Class : Class 6

Ans 37:

Class : Class 4
Are B, C, D correct.

Ans 38:

Class : Class 5
I have by mistake typed it Co sorry it will be C. I have a solution we can report error.

Ans 39:

Class : Class 4
all options are wrong

Ans 40:

Class : Class 4
Please explain the answer. I also support Baibhab that the choices given are wrong.

Ans 41:

Class : Class 5
HARRY CAN YOU PLEASE EXPLAIN ME

Ans 42:

Class : Class 4

Ans 43:

Class : Class 8
it is wrong

Ans 44:

Class : Class 9
the options are wrong

Ans 45:

Class : Class 4
Qtn. agreed but main point is which is column X and which is column is Y??????

Ans 46:

Class : Class 8
wrong options

Ans 47:

Class : Class 6
Options are wrong. Molecular distance should be less.

Ans 48:

Class : Class 6
All the options are totally wrong, please change them

Ans 49:

Class : Class 5
THE ANSWER IS WRONG.

Ans 50:

Class : Class 4
Please change it. It is correct in NSO book like Harish Divakar said

Ans 51:

Class : Class 5
Can somebody pls answer this question with explanation

Ans 52:

Class : Class 4
All options are wrong.

Ans 53:

Class : Class 4
All options are WRONG

Ans 54:

Class : Class 4
is there a correction in the options given?if not please clarify with explanation

Ans 55:

Class : Class 8
if an object is cooled down the molecule structure changes from loosely packed to tightly packed. therefore none of the options is correct

Ans 56:

Class : Class 4
all are wrong

Ans 57:

Class : Class 8
4wrong question

Ans 58:

Class : Class 6
ALL ARE WRONG

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Subject :NSO    Class : Class 4

Achin conducted an experiment to find out the amount of light that can pass through three different materials, a clear plastic sheet, a cardboard and a piece of tracing paper. All the materials have the same thickness. He shone a torch on the three materials and used a light sensor to measure how much light has passed through each of them. Which of the following graphs most likely shows the amount of light that has passed through each material?

A
B
C
D


Ans 1:

Class : Class 5
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC is correct

Ans 2:

Class : Class 4
AAAAAAAAA IS RIGHT

Ans 3:

Class : Class 5

Ans 4:

Class : Class 6
a

Ans 5:

Class : Class 9
A is correct

Ans 6:

Class : Class 9
c

Ans 7:

Class : Class 4
C IS THE CORRECT ANS AS BOTH CLEAR PLASTIC SHEET AND TRACING PAPER ARE BOTH TRANSLUCENT AND HENCE ALLOWING EQUAL AMOUNT OF LIGHT TO PASS THROUGH.

Ans 8:

Class : Class 7
C

Ans 9:

Class : Class 8
C is right and correct ,and if isnt tell me hhhhhhhhhhhhhhhooooooooooooooooooooowwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwHOW?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????/

Ans 10:

Class : Class 8
The answer is C .

Ans 11:

Class : Class 7

Ans 12:

Class : Class 4
YES , C IS CORRECT @RAJVEER

Ans 13:

Class : Class 7
I think the ‘A’ is the right answer

Ans 14:

Class : Class 4
Very Very Good

Ans 15:

Class : Class 5
C is the correct answerEveryone

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Subject :NSO    Class : Class 2

Ans 1:

Class : Class 5

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 7
4km

Ans 2:

Class : Class 5

Ans 3:

Class : Class 1
answer will be d 4 kilo meters

Ans 4:

Class : Class 7
4 km

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Subject :NSO    Class : Class 9

Ans 1:

Class : Class 10
force=change in momentum/time interval(del t) impulse=change in momentum=force * time interval(del t) SI unit of impulse is newton second or Ns. CGS unit of impulse is dyne second .

Ans 2:

Class : Class 9
SI unit of impluse is Newton

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Subject :NSO    Class : Class 9

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Subject :NSO    Class : Class 6

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