National Science Olympiad Forum By SOF Olympiad Trainer - Page 644

User Forum

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 4
i dint understand anything

Ans 2:

Class : Class 5
got it b

Post Your Answer

Subject :NSO    Class : Class 5

Post Your Answer

Subject :NSO    Class : Class 5

Anil and Brij are hammering a nail into two pieces of wood to join them. Sunita covered her ears, because she said that hammering is noisy. She told them that they are wasting energy because most of the energy they used in hammering is getting lost. Anil disagreed with what Sunita said. Brij explained that some of the energy is converted to sound and heat, but not lost. Anil then added that energy can never be lost or destroyed.
Who among Anil, Brij and Sunita is/are right?

ABrij only
BAnil only
CSunita only
DAnil and Brij only


Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 4
yes option C is correct

Ans 2:

Class : Class 7
The answer is common cold as when we get a cold almost all the people who are usually around us catch the cold from us.

Ans 3:

Class : Class 7
The answer is common cold as when we get a cold almost all the people who are usually around us catch the cold from us.

Ans 4:

Class : Class 4
I agree with them. common cold is the answer. I hope someone corrects this

Ans 5:

Class : Class 4
Read the question properly. It says that which disease CANNOT be spread like the transmission shown here. Here option A,B and D is spread through air. But cholera is spread through water. So option C is the correct option

Ans 6:

Class : Class 7

Ans 7:

Class : Class 9
It is written INCORRECT so cholera(c) is the answer

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
icliked A but it came B

Post Your Answer

Subject :NSO    Class : Class 5

Post Your Answer

Subject :NSO    Class : Class 5

Kavita wanted to toast some bread with the electric toaster. When she switched on the toaster, she received a mild electric shock. However, when her sister Komal tried the same, she did not feel any shock. What could be the possible reason for the difference in their experiences?
(i) Kavita's hands were wet but Komal's hands were dry.
(ii) Kavita was barefoot but Komal was wearing a pair of rubber slippers.
(iii) Kavita's body was a better conductor of electricity than Komal's.

A(i) and (ii) only
B(i) and (iii) only
C(ii) and (iii) only
D(i), (ii) and (iii)


Post Your Answer

Subject :NSO    Class : Class 10

Ans 1:

Class : Class 10
because there is not much fissionalble material as they are mainly constituted by hydrogen

Ans 2:

Class : Class 10
because there is not much fissionalble material as they are mainly constituted by hydrogen

Post Your Answer

Subject :NSO    Class : Class 6

Refer to the given Venn diagram and select the incorrect statement regarding P, Q and R.


A R has three pairs of jointed legs which help it to walk, run and climb.
B Q has paired and unpaired fins that help in movement in water.
C P has special air sacs connected to the lungs which aid in respiration process.
D Q is a shelled animal that possesses a muscular structure called foot which produces a series of wave like movements, pushing its body forward.


As per the question the animal Q is an shelled animal because it have endoskeletonSo the option D should be correct.

Ans 1:

Class : Class 10
i do not get the answer explain it

Ans 2:

Class : Class 10

Ans 3:

Class : Class 6
yeah do

Ans 4:

Class : Class 8
Disagreed Utsavi

Ans 5:

Class : Class 8
questions like what is p q r s etc. are very confusing and they should give straightforward questions which are easily understandable...even in maths or reasoning its the same thing......they should not give a whole achievers section test with only diagrams and stuff like whats p whats q......SOF should improve their questions....also They should make their site better....the site is so boring and we don't feel like taking tests...the site is so outdated...not even designed properly....there are always pictures for diagrams in maths or science questions.....very bad questions and content

Ans 6:

Class : Class 6
Excuse me utsavi, but SOF prepares questions like that for the exams to be more competitive

Ans 7:

Class : Class 6
In the solution it is said that 'Q' is a fish but in the ans it is something else can i get its explanation

Ans 8:

Class : Class 7
Fish... dont have exogenic skeleton

Ans 9:

Class : Class 6
Utsavi u are correct

Post Your Answer

Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8
How come solids have started melting at 0 degrees celsius

Post Your Answer