National Science Olympiad Forum By SOF Olympiad Trainer - Page 598

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
It's answer b) Turtle : Lizard

Ans 2:

Class : Class 8
Hey! Earthworm and cockroaches breathe to spiracles! The answer can be (D) also, or not? Please explain.

Ans 3:

Class : Class 5
plz explain

Ans 4:

Class : Class 6
it's D!!!

Ans 5:

Class : Class 7
How

Ans 6:

Class : Class 4
Earthworms breathe through their moist skin unlike cockroaches

Ans 7:

Class : Class 5

Ans 8:

Class : Class 8
Can anyone tell the answer of this question with explanation?

Ans 9:

Class : Class 5
How ha

Ans 10:

Class : Class 6
it's B as both of them breathe through lungs and D option is that earthworm breathe through skin and cockroaches breathe through spiracles

Ans 11:

Class : Class 7
The answer is B because they are reptiles

Ans 12:

Class : Class 7

Ans 13:

Class : Class 7

Ans 14:

Class : Class 6
but it can be D as cockroaches and earthworms breath through spiracles

Ans 15:

Class : Class 5

Ans 16:

Class : Class 5
B

Ans 17:

Class : Class 6
Please tell the answer with solutions...

Ans 18:

Class : Class 7
but lizards breathe through lungs

Ans 19:

Class : Class 8
Ans is B

Ans 20:

Class : Class 3
Please confirm answer

Ans 21:

Class : Class 6
No it is none because all have different breathing organs as a pair

Ans 22:

Class : Class 7
IT SHOULD BE BOTH B AND D

Ans 23:

Class : Class 8
The answer is B because turtles and lizards breathe through lungs .

Ans 24:

Class : Class 5
It can be D as they both breathe through spiracles. Pls help me understand this question.

Ans 25:

Class : Class 8
earthworms breathe through skin not lungs

Ans 26:

Class : Class 6
Yes answer is B only

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
Video cameras and camcorders. ... Modern electronic camcorders use digital video. Instead of recording photographic images, they use a light sensitive microchip called a charge-coupled device (CCD) to convert what the lens sees into digital (numerical) format.

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
By the help of Photon.

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Subject :NSO    Class : Class 6

Aarushi took two food samples X and Y in separate test tubes. She added 2-3 drops of Benedict’s solution in food sample X and heated it while she added two drops of copper sulphate solution and few drops of caustic soda solution in food sample Y. She observed that sample X turned brick-red while sample Y turned purple.
Which of the following is correct regarding X and Y?

A X consists of protein while Y consists of starch.
B X consists of sugar while Y consists of protein.
C X consists of starch while Y consists of protein.
D X consists of sugar while Y consists of starch.


Ans 1:

Class : Class 10
The answer is actually C because starch consists of carbohydrates and sugars, but sugars is not the exact answer.

Ans 2:

Class : Class 7
The correct answer is b

Ans 3:

Class : Class 7
answer is b

Ans 4:

Class : Class 6
B is the correct answer

Ans 5:

Class : Class 8
the correct answer is B

Ans 6:

Class : Class 7
Answer is c

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Subject :NSO    Class : Class 4

Rohit performed an experiment wherein he set up three test tubes as shown in the figure. Select the INCORRECT statement regarding this.


ATest tube P will have most carbon dioxide after three hours.
BTest tube Q will have least oxygen after three hours.
COrganisms in test tube R will survive for a longer time as compared to organisms in test tubes P and Q.
DNo oxygen will remain in test tube P after some time.


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Ans 1:

Class : Class 7
B

Ans 2:

Class : Class 4

Ans 3:

Class : Class 6

Ans 4:

Class : Class 8

Ans 5:

Class : Class 7

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
ans :d

Ans 2:

Class : Class 7
d

Ans 3:

Class : Class 3

Ans 4: (Master Answer)

Class : Class 1
The correct answer is D.

Ans 5:

Class : Class 5

Ans 6:

Class : Class 5
The correct answer is option D.

Ans 7:

Class : Class 4

Ans 8:

Class : Class 3
the correct answer is d

Ans 9:

Class : Class 5
why stomata?

Ans 10:

Class : Class 4
Ans is D

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6

Ans 2:

Class : Class 8

Ans 3:

Class : Class 10

Ans 4:

Class : Class 7
understood?

Ans 5:

Class : Class 6
The correct answer is (D) because the the magnetic field travels from north to south.

Ans 6:

Class : Class 7

Ans 7:

Class : Class 8

Ans 8:

Class : Class 8

Ans 9:

Class : Class 9
sof has given c which is wrong

Ans 10:

Class : Class 7

Ans 11:

Class : Class 7

Ans 12:

Class : Class 6
why cant the answer be A?

Ans 13:

Class : Class 7

Ans 14:

Class : Class 7

Ans 15:

Class : Class 9
the field line travels from north to south

Ans 16:

Class : Class 10

Ans 17:

Class : Class 10

Ans 18:

Class : Class 7
the answer is d because the field lines of a magnet always travle from north to south

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8

Ans 2:

Class : Class 6

Ans 3:

Class : Class 10
C

Ans 4:

Class : Class 9
Yes, the answer is option "C". It is not true that arteries will always carry oxygenated blood and the veins will always carry deoxygenated blood (pulmonary vein and artery).

Ans 5:

Class : Class 9

Ans 6:

Class : Class 6

Ans 7:

Class : Class 7
here option c holds true because in option a and b we can make an exception with pulmonary artery and vein.

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 8
sea snakes also breathe through skin so option 1 should also be correct.

Ans 2:

Class : Class 8
you are correct Pragun goel . my answer is also a.

Ans 3:

Class : Class 7

Ans 4:

Class : Class 5
a and c both are correct answers

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Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Class : Class 1
The correct answer is C.

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