National Science Olympiad Forum By SOF Olympiad Trainer - Page 485

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
THE ANSWER IS D AS FROG HAS 4 STAGES IN IT'S LIFE CYCLE ,BUT DOES NOT LOOK LIKE IT'S PARENT.WHILE,MOSQUITO HAS THREE SYTAGES IN IT'S LIFE CYCLE AND DOES NOT LOOK LIKE IT'S PARENT.I MADE THE SAME MISTAKE IN THE PREVIOUS TEST

Ans 2:

Class : Class 3
The answer which is given in the SOF application is wrong, because a frog has four life stages in his life stages, the correct answer must be moth because it has only three life stages in his life cycle and the parent and child do not look same,

Ans 3:

Class : Class 4

Ans 4:

Class : Class 4
correct answer is D

Ans 5:

Class : Class 8
The correct answer is C

Ans 6:

Class : Class 8

Ans 7:

Class : Class 5

Ans 8:

Class : Class 9

Ans 9:

Class : Class 4
Frog has 4 stages any of the answers are not correct

Ans 10:

Class : Class 5
but frog dosnt have just 3 life stages it has 4 so its not the answer

Ans 11:

Class : Class 9
the answer is d

Ans 12:

Class : Class 4
It is option B

Ans 13:

Class : Class 5
the answer is d as the mosquito does not look like the parent , has 3 stages of life and lays eggs while frog does not look like the adult , has 4 stages of life and lays eggs .

Ans 14:

Class : Class 5

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
ANS A

Ans 2:

Class : Class 5
ans is B

Ans 3:

Class : Class 7
super easy answer. it is 'A'

Ans 4:

Class : Class 5
Answer is C

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
there is no proper question?

Ans 2:

Class : Class 5
There is no question!

Ans 3:

Class : Class 7
There is no question. What are we supposed to answer. It is incomplete

Ans 4:

Class : Class 6
Where is the question? Isn't it very vague?

Ans 5:

Class : Class 10
question is incomplete

Ans 6:

Class : Class 5
what.

Ans 7:

Class : Class 9
No relevant question

Ans 8:

Class : Class 5
where is the question ??????????????????

Ans 9:

Class : Class 6

Ans 10:

Class : Class 5

Ans 11:

Class : Class 9
What is the question?????????????????????????????????

Ans 12:

Class : Class 5
report error

Ans 13:

Class : Class 7
question????????????????

Ans 14:

Class : Class 5

Ans 15:

Class : Class 6
no question.report error please

Ans 16:

Class : Class 4

Ans 17:

Class : Class 9
The question is there in the solution please check

Ans 18:

Class : Class 6
see the solution the question is how many kharif crops are there. there are 6.

Ans 19:

Class : Class 5
wrong question, incompleted question!!!!!!!!!!!!!????

Ans 20:

Class : Class 7
they did not give the question .

Ans 21:

Class : Class 9
question is incomplete

Ans 22:

Class : Class 5
where is the question???????????????????????????

Ans 23:

Class : Class 2

Ans 24:

Class : Class 5
this is not a question

Ans 25:

Class : Class 6
Where is the question!?

Ans 26:

Class : Class 5
where the h

Ans 27:

Class : Class 6

Ans 28:

Class : Class 7
No question?????????????????????????????

Ans 29:

Class : Class 4
where is the questionnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn

Ans 30:

Class : Class 6

Ans 31:

Class : Class 4
There is no question and when I reported that error, it just came as "invalid"

Ans 32:

Class : Class 5
The question is in the solution please check

Ans 33:

Class : Class 6
If they don't give the complete question, we all will get it wrongSOF please look into this matter

Ans 34:

Class : Class 5
The question is incomplete

Ans 35:

Class : Class 3
no question!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 36:

Class : Class 6

Ans 37:

Class : Class 5
WHERE IS THE QUESTION!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!??????????????????????????????????????????????????????????????????????????????????!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!???????????????????????????

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
Please explain how the deviation has happened at 180 degrees

Ans 2:

Class : Class 8
explain please....

Ans 3:

Class : Class 8

Ans 4:

Class : Class 10
But wont the refraction of light in water play a role?

Ans 5:

Class : Class 9
but due to water refraction will also take place

Ans 6:

Class : Class 8
Why does the deviation happen to be 180 degrees

Ans 7:

Class : Class 8
Key Idea: Phenomenon of reflection is independent of medium. The deviation produced by combination of two plane mirrors is δ=2π−2θ =2π−2×π2 (θ=90o) ⇒ δ=π=180o. Hence, total deviation in incident ray is180o

Ans 8:

Class : Class 6
Thank You Mr.Rahul

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
Answer can be A

Ans 2:

Class : Class 4
D

Ans 3:

Class : Class 6
D

Ans 4:

Class : Class 7

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7

Ans 2:

Class : Class 9

Ans 3:

Class : Class 9
When a battery is constructed such that all the positive terminal of the cells are connected to a same point and all the negative terminals of the cells are connected to another point then the grouping of cells in this manner is called the Parallel Grouping of cells. The two end terminals of the construct where all the positive and negative terminals of the cells are connected act as the corresponding terminal of the battery.

Ans 4:

Class : Class 6
pls explain how the answer is bBTW: your answer is correct

Ans 5:

Class : Class 6
According to me D is the correct answer as a wire should be connected from a terminal of a battery to the - terminal of the battery for longer stay of electric circuit, and this rule is satisfied by the circuit shown in option D.

Ans 6:

Class : Class 10

Ans 7:

Class : Class 9
Answer is B

Ans 8:

Class : Class 6
D

Ans 9:

Class : Class 6
According to me D is the correct answer

Ans 10:

Class : Class 7

Ans 11:

Class : Class 7
according to me D is correct

Ans 12:

Class : Class 8

Ans 13:

Class : Class 6
pls explain how the answer is B

Ans 14:

Class : Class 7

Ans 15:

Class : Class 6

Ans 16:

Class : Class 6
How many times will olympiad confuse us its D

Ans 17:

Class : Class 6
the answer is D

Ans 18:

Class : Class 10
D is the correct answer.

Ans 19:

Class : Class 6
Answer B is the correct answer as the question specified for the arrangement which will allow the bulb to stay lighted for the longest possible time. Option B is connected as One cell as per the circuit (all connections are in parallel), While Option D is in Series (in case of failure of one cell, the circuit will not work as the current will not pass through the cell)

Ans 20:

Class : Class 9
D is definitely the correct answer

Ans 21:

Class : Class 6

Ans 22:

Class : Class 3
D is the correct answer

Ans 23:

Class : Class 7

Ans 24:

Class : Class 8
pls explain how the answer is B

Ans 25:

Class : Class 6

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
the correct answer is c as it is given weaving fibres not weaving yarn.read the question carefully.

Ans 2:

Class : Class 7
I agree with A Ramakrishna's point

Ans 3:

Class : Class 8

Ans 4:

Class : Class 8
it is cccccccccccccccccccccc!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 5:

Class : Class 6
Answer is C. ttraj's point is true.

Ans 6:

Class : Class 4
It is C!!!!! Be careful!!!!!!!!!

Ans 7:

Class : Class 4
The answer is B

Ans 8:

Class : Class 7
answer is B

Ans 9:

Class : Class 3
It is C only!!!

Ans 10:

Class : Class 8
The answer is B

Ans 11:

Class : Class 5
its an error as weaving is done as sam eas decribed in statement 2 i think answer should be ...............BBBBB......................

Ans 12:

Class : Class 7
thanks for the answer

Ans 13:

Class : Class 7
Ans = C

Ans 14:

Class : Class 8
I think the is option B

Ans 15:

Class : Class 3
Answer is C. As you can't weave fibres.read the question properly!!!!!!!!!!!!!!!

Ans 16:

Class : Class 10

Ans 17:

Class : Class 7
The answer would be C. If you read the question carefully, it says, "Weaving is done by interlacing two sets of FIBRES at right angles." There are two things wrong with this: 1) They need not be interlaced at right angles. 2) The question clearly says 'fibres', not 'yarns' as it should be. Therefore, the answer is C.

Ans 18:

Class : Class 6
Both statements are true

Ans 19:

Class : Class 8

Ans 20:

Class : Class 7
There seems to be an error in this. We feel that it is B

Ans 21:

Class : Class 7

Ans 22:

Class : Class 8

Ans 23:

Class : Class 1
there is an error. the answer is C

Ans 24:

Class : Class 6
Very good and tricky question

Ans 25:

Class : Class 7
the answer is C because YARNS are woven not FIBRES

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Subject :NSO    Class : Class 3

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8
ans is c

Ans 2:

Class : Class 7

Ans 3:

Class : Class 7
p

Ans 4:

Class : Class 8
ns is C

Ans 5:

Class : Class 8
q

Ans 6:

Class : Class 7
Bubble pack is a good insulator than a cotton wool.

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 9

Ans 2:

Class : Class 9

Ans 3:

Class : Class 10
why not statement V is correct ?SOF pls explain

Ans 4:

Class : Class 8
it should be C ,since C is the ovule

Ans 5:

Class : Class 7

Ans 6:

Class : Class 9
b is the answer

Ans 7:

Class : Class 8
c

Ans 8:

Class : Class 9
Yes it is CQ is female gamete and it does transform into endosperm

Ans 9:

Class : Class 9

Ans 10:

Class : Class 8

Ans 11:

Class : Class 8
C is correct, the statement (i) is vague

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