National Science Olympiad Forum By SOF Olympiad Trainer - Page 665

# User Forum

Subject :NSO    Class : Class 4

## Ans 1: (Master Answer)

Class : Class 1
The correct answer is D.

Subject :NSO    Class : Class 5

## Ans 1:

Class : Class 5
Answer is B akenis withis ve

## Ans 2:

Class : Class 7
D cannot be correct because it increased after 3rd and 4th spray

Class : Class 5
wrong

Class : Class 4

## Ans 5:

Class : Class 4
answer is b only because it is decreasing also

Class : Class 5

## Ans 7:

Class : Class 5
IF B IS ANSWER THAN GRAPH SHOULD BE ALMOST UNIFORM.. THE GROWTH IS INCREASING AFTER 3RD-4TH SPRAYING

## Ans 8:

Class : Class 5
it is supposed to be D. the graph should be going down slowly and not increasing if the answer was B.

## Ans 9:

Class : Class 10
It is C because after the guy used the 3rd and 4th pesticide the insects started increasing

Class : Class 1

## Ans 11:

Class : Class 8
The pesticide is partially effective because there is a drop in population after each spraying. Hence, B CANNOT BE THE CORRECT ANSWER.

Class : Class 7
C

## Ans 13:

Class : Class 8
it is d.sof posted wrong answer

## Ans 14:

Class : Class 7
it should be 'D' but SOF shows the graph is decreasing and increasing which is not possible. it is the wrong graph as this can't happen.

Class : Class 4
b

## Ans 16:

Class : Class 9
If b is the answer then why is the bar graph increasing day by day.Ã°ÂŸÂ˜Â

## Ans 17:

Class : Class 7
I think the right answer should be C as when the 3rd spray was conducted the pest started to increase hence right answer answer is CThank you for appreciating me

Class : Class 6
D

## Ans 19:

Class : Class 7
B is answer because when it decreases it is their natural death, otherwise they have become resistant thats why it is decreasing then increasing and not uniform.

Subject :NSO    Class : Class 5

Class : Class 4

Class : Class 4

Class : Class 5

Class : Class 7

Class : Class 8

Class : Class 8
(B) or (C)?

## Ans 7:

Class : Class 7
It is "B". People who put "a" mixed up x

Class : Class 6

Class : Class 7

Class : Class 5
A

Class : Class 9

## Ans 12:

Class : Class 7
B is the answer to this question

Class : Class 8

Class : Class 3

Class : Class 10
A

## Ans 16:

Class : Class 5
ANS B!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Class : Class 7

## Ans 18:

Class : Class 6
Confusion between (B) and (C)

Class : Class 5

Class : Class 8

## Ans 21:

Class : Class 5

Subject :NSO    Class : Class 1

## Ans 1:

Class : Class 10
C

Subject :NSO    Class : Class 7

## Ans 1:

Class : Class 7
I got the answer ........Its option (C) SPLEEN

Subject :NSO    Class : Class 1

## Ans 1:

Class : Class 6
manit d is the answer

Subject :NSO    Class : Class 7

## Ans 1:

Class : Class 8
Options B and D are correct

Subject :NSO    Class : Class 5

Class : Class 10
D

## Ans 2:

Class : Class 5
it is C as it is a Xanthium

## Ans 3:

Class : Class 9
I think that laksmi is saying correct because we cannot diffrentiate them as it is not clear that they are spines like in xanthium or feather like in dandelion

## Ans 4:

Class : Class 8
The Xanthium IS dispersed by animals

## Ans 5:

Class : Class 6
It is Xanthium which is dispersed by animals.

## Ans 6:

Class : Class 8
The correct option is (C) or (B)?

Class : Class 5

## Ans 8:

Class : Class 6
The picture given did not look like xanthium neither dandelion ,so it looked like dandelion to me so I went with (B)Please give better images

## Ans 9:

Class : Class 5
how is this possible

## Ans 10:

Class : Class 5
The image looks nothing like cocklebur. It has to be a bit more clear,

## Ans 11:

Class : Class 6
The correct answer should be B because it has a hairy structure and it can be dispersed by wind .nor its written that this is Xanthium

## Ans 12:

Class : Class 6
the damn picture needs to be clear

## Ans 13:

Class : Class 8
it is dandelion isn't it??? i think it is wind because hair and size

Class : Class 8

## Ans 15:

Class : Class 8
even I went with B

Class : Class 9
Its B

## Ans 17:

Class : Class 4
The picture is not clear and it cannot be said that it is a xanthium neither can it be said it is a dandelion. I went with B. Please show better qualities pictures sof.

Class : Class 8
Can't understand

## Ans 19:

Class : Class 5
Correct answer is A !!! As it is having hair like structure so, it is carried by wind

## Ans 20:

Class : Class 9
it has hair like structure

## Ans 21:

Class : Class 10
You are correct ans. is B wind because it seems to be light in weight and also hairs that acts like feathers and also wind can carry only light weight seeds.

Subject :NSO    Class : Class 5

## Ans 1:

Class : Class 7
IT IS IN 1984 WHEN MY MOTHER WAS BORN.

## Ans 2:

Class : Class 5
I HAD CONFUSION WITH A AND C

## Ans 3:

Class : Class 5
ans is a April 3 1984 not ans c

## Ans 4:

Class : Class 10
Answer is A April 3, 1984

## Ans 5:

Class : Class 7
IT IS JUST ON MY BIRTHDAY SO I REMEMBER IT. OPTION C IS THE ANSWER

## Ans 6:

Class : Class 8
(A) is the correct answer

Class : Class 5

## Ans 8:

Class : Class 8
Hey, mathamagician. Uh it could also be April 3 since the dates might differ by a few days due to there being many sources.

## Ans 9:

Class : Class 6
No, it is actually none, it was on 2nd April 1984.

Class : Class 10

## Ans 11:

Class : Class 7
A is the answer to this question

Class : Class 10

## Ans 13:

Class : Class 8
the answer is 2nd april 1984 i got confused

Subject :NSO    Class : Class 3

Class : Class 5