National Science Olympiad Forum By SOF Olympiad Trainer - Page 432

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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 4
correct answer is D

Ans 3:

Class : Class 4
It is option B

Ans 4:

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

Ans 5:

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

Ans 6:

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 7:

Class : Class 7

Ans 8:

Class : Class 4

Ans 9:

Class : Class 6
the answer is d

Ans 10:

Class : Class 5

Ans 11:

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 12:

Class : Class 8
The correct answer is C

Ans 13:

Class : Class 6

Ans 14:

Class : Class 5

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
Answer is C

Ans 2:

Class : Class 5
ANS A

Ans 3:

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

Ans 4:

Class : Class 5
ans is B

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6

Ans 2:

Class : Class 5

Ans 3:

Class : Class 8
question is incomplete

Ans 4:

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

Ans 5:

Class : Class 5
The question is incomplete

Ans 6:

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

Ans 7:

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

Ans 8:

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

Ans 9:

Class : Class 5
There is no question!

Ans 10:

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

Ans 11:

Class : Class 7
they did not give the question .

Ans 12:

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

Ans 13:

Class : Class 5
Where is the question!?

Ans 14:

Class : Class 9
question is incomplete

Ans 15:

Class : Class 5

Ans 16:

Class : Class 6
there is no proper question?

Ans 17:

Class : Class 6

Ans 18:

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

Ans 19:

Class : Class 6
no question.report error please

Ans 20:

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

Ans 21:

Class : Class 4
where is the questionnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn

Ans 22:

Class : Class 5
what.

Ans 23:

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

Ans 24:

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

Ans 25:

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

Ans 26:

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

Ans 27:

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

Ans 28:

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

Ans 29:

Class : Class 2

Ans 30:

Class : Class 6

Ans 31:

Class : Class 9
No relevant question

Ans 32:

Class : Class 4

Ans 33:

Class : Class 5
report error

Ans 34:

Class : Class 5
There is no question. What are we supposed to answer. It is incomplete

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
explain please....

Ans 2:

Class : Class 6
Thank You Mr.Rahul

Ans 3:

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 4:

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

Ans 5:

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

Ans 6:

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

Ans 7:

Class : Class 9
But wont the refraction of light in water play a role?

Ans 8:

Class : Class 8

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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 7

Ans 4:

Class : Class 6
D

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Subject :NSO    Class : Class 6

Ans 1:

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

Ans 2:

Class : Class 7

Ans 3:

Class : Class 8

Ans 4:

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 5:

Class : Class 6

Ans 6:

Class : Class 9
Answer is B

Ans 7:

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 8:

Class : Class 7

Ans 9:

Class : Class 7
according to me D is correct

Ans 10:

Class : Class 7

Ans 11:

Class : Class 6
D

Ans 12:

Class : Class 6
the answer is D

Ans 13:

Class : Class 6
pls explain how the answer is B

Ans 14:

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

Ans 15:

Class : Class 6

Ans 16:

Class : Class 9
D is definitely the correct answer

Ans 17:

Class : Class 3
D is the correct answer

Ans 18:

Class : Class 9

Ans 19:

Class : Class 7

Ans 20:

Class : Class 8
pls explain how the answer is B

Ans 21:

Class : Class 6

Ans 22:

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 23:

Class : Class 7

Ans 24:

Class : Class 10
D is the correct answer.

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Subject :NSO    Class : Class 6

Read the given statements and select the correct option.
Statement 1 : Fibres are first spun into yarns, which are then woven or knit into fabrics.
Statement 2 : Weaving is done by interlacing two sets of fibres at right angles on a loom.

ABoth statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
BBoth statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
CStatement 1 is true and statement 2 is false.
DBoth statements 1 and 2 are false.


Ans 1:

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

Ans 2:

Class : Class 3
It is C only!!!

Ans 3:

Class : Class 7

Ans 4:

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

Ans 5:

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

Ans 6:

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

Ans 7:

Class : Class 7
it is cccccccccccccccccccccc!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 8:

Class : Class 8

Ans 9:

Class : Class 10

Ans 10:

Class : Class 8
I think the is option B

Ans 11:

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

Ans 12:

Class : Class 6
Very good and tricky question

Ans 13:

Class : Class 7
thanks for the answer

Ans 14:

Class : Class 8

Ans 15:

Class : Class 7
answer is B

Ans 16:

Class : Class 8
The answer is B

Ans 17:

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

Ans 18:

Class : Class 8

Ans 19:

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

Ans 20:

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

Ans 21:

Class : Class 7
Ans = C

Ans 22:

Class : Class 4
The answer is B

Ans 23:

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 24:

Class : Class 6
Both statements are true

Ans 25:

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

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
C

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7

Ans 2:

Class : Class 7
ns is C

Ans 3:

Class : Class 7
ans is c

Ans 4:

Class : Class 8
q

Ans 5:

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

Ans 6:

Class : Class 7
p

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8
c

Ans 2:

Class : Class 9
why not statement V is correct ?SOF pls explain

Ans 3:

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

Ans 4:

Class : Class 9

Ans 5:

Class : Class 9

Ans 6:

Class : Class 9

Ans 7:

Class : Class 9
b is the answer

Ans 8:

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

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