National Science Olympiad Forum By SOF Olympiad Trainer - Page 554

User Forum

Subject :NSO    Class : Class 6

Ans 1:

Class : Class 9
Answer is c as vaseline is applied

Ans 2:

Class : Class 6
I did this experiment at my home. When I did it, I observed that the water droplets were present on the leaves as well as the polythene bag. The droplets pass through Vaseline. So, the answer is A. Please correct this SOF. I lost 3 marks.

Ans 3:

Class : Class 7
the answer should be A

Ans 4:

Class : Class 10
The anser should be b

Post Your Answer

Subject :NSO    Class : Class 6

Ans 1:

Class : Class 9
No saurabh, The answer will be B as the water will be evaporated and then there will be less water and more salt so the water in glass Q will taste more saltier.

Ans 2:

Class : Class 10

Ans 3:

Class : Class 8
all will taste same isnt it

Post Your Answer

Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
i think b

Ans 2:

Class : Class 9
why is the answer C can someone explain

Ans 3:

Class : Class 10

Ans 4:

Class : Class 9

Ans 5:

Class : Class 4
why is the answer C????

Ans 6:

Class : Class 4

Ans 7:

Class : Class 9
even a is not right . according to me queston is wrong

Ans 8:

Class : Class 10
Why is the answer C ??Can't understand......

Ans 9:

Class : Class 7
The answer is C because : total time = 14min; Total distance = 50km, 14 min in hours is equal to 14/60 = 0.23hrs if you divide, then speed is equal to 50km/0.23hrs = 50x100/23 = 5000/23 = 214.28km/hr. You're welcome.

Ans 10:

Class : Class 7
A

Ans 11:

Class : Class 10
why is the answer c

Ans 12:

Class : Class 8
This question is wrong, the answer can't be C.

Ans 13:

Class : Class 5
This much distance is not covered by car

Ans 14:

Class : Class 8
I think that SOF must give a proper solution to this answer. Average speed=Total Distance/Total Time. Here, total distance = 50 km and the total time= 35 mins. Therefore, average speed= 50/35=10/7=1.42....km/min. I request SOF to kindly tell the solution.

Ans 15:

Class : Class 7
question is wrong

Post Your Answer

Subject :NSO    Class : Class 4

Post Your Answer

Subject :NSO    Class : Class 6

Ans 1:

Class : Class 9
A is the right option

Ans 2:

Class : Class 9
d is the right option.

Post Your Answer

Subject :NSO    Class : Class 6

Post Your Answer

Subject :NSO    Class : Class 6

Post Your Answer

Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
C

Ans 2:

Class : Class 4
Frog lifecyle -> Egg-> Tadpole -> Froglet -> Adult. So it is 4 stages

Ans 3:

Class : Class 8

Post Your Answer

Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8

Ans 2:

Class : Class 9
tough question

Ans 3:

Class : Class 10
yes,ashwak , really tough

Ans 4:

Class : Class 10
The answer is (c) .

Post Your Answer

Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8

Ans 2:

Class : Class 6
dwill the answeras all plastic materials are ofsame density which is lighter than water's density..since the all will float

Ans 3:

Class : Class 5

Ans 4:

Class : Class 9
can you explain little better

Ans 5:

Class : Class 10

Ans 6:

Class : Class 6

Ans 7:

Class : Class 10

Post Your Answer