National Science Olympiad Forum By SOF Olympiad Trainer - Page 646

User Forum

Subject :NSO    Class : Class 7

Ans 1:

Class : Class 10
the answer is (d), as calcium hydroxide is a base and it neutralises the effect of the acids in wastewater

Post Your Answer

Subject :NSO    Class : Class 4

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5

Ans 2:

Class : Class 8
1)When option 'a' choosed SOF shows option 'b' as correct answer and vica-versa. 2) In the book the correct answer is 'a' but over here it is showing as 'b'.

Ans 3:

Class : Class 2
Answer is d

Ans 4:

Class : Class 1

Ans 5:

Class : Class 4

Ans 6:

Class : Class 6

Ans 7:

Class : Class 5
ANSWER IS A I WROTE IT WRONG IN FORUM IT SHOWS A BRUH ;-;

Ans 8:

Class : Class 9
Aryaveer and shourya shinde, maybe it be a technical error. But you are right

Ans 9:

Class : Class 1

Ans 10:

Class : Class 5
Answer is "A". Since there are technical glitches it shows it as "B"

Ans 11:

Class : Class 5
option a, because The graph shows that place X has temperatures in the range of 35 to 50°C thus it must be a hot and dry place. Animals living here adapt themselves to reduce sweating in order to prevent water loss from body.

Post Your Answer

Subject :NSO    Class : Class 6

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
Small Intestine

Ans 2:

Class : Class 8

Ans 3:

Class : Class 5
Stomach will grind the food particles into smaller one and in small intestine only finally digestion will takes place and the nutrients will absorbed by blood.

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 8
It is plant P because if we compare 5 1/2cm with other measures, it will be the largest.

Post Your Answer

Subject :NSO    Class : Class 4

Ans 1:

Class : Class 1
D.

Ans 2: (Master Answer)

Class : Class 1
The correct answer is D.

Ans 3:

Class : Class 8

Ans 4:

Class : Class 4
A

Ans 5:

Class : Class 5
I go with Jasnoor's option. A

Ans 6:

Class : Class 6
My Answer is DPollination is when pollen of a plant travels from one plant to another by something (i.e.Insect and water). Pollens are used to grow seeds in the plant

Ans 7:

Class : Class 5

Ans 8:

Class : Class 4
Guys!! Date palm grows in deserts. they are asking about a plant in hilly ares.

Ans 9:

Class : Class 3

Ans 10:

Class : Class 8

Ans 11:

Class : Class 5

Ans 12:

Class : Class 4
what is pollination

Ans 13:

Class : Class 5
Option D

Post Your Answer

Subject :NSO    Class : Class 7

Ans 1:

Class : Class 10

Ans 2:

Class : Class 7
DB

Ans 3:

Class : Class 9
@sjash the question is trying to say that E is second to the right of a, not c

Ans 4: (Master Answer)

Class : Class 1
The correct answer is A.

Ans 5:

Class : Class 9
but the ques is wrong........if a is sitting between g and c, how is c second to the right of a ???????

Post Your Answer

Subject :NSO    Class : Class 7

Ans 1:

Class : Class 10
D as it is mentioned that the particle is travelling at a constant speed

Ans 2:

Class : Class 7
agoogle says a

Ans 3:

Class : Class 9
both options "C" and "D" are correct in my opinion cause as the car is moving at a constant speed there is no acceleration and as the car is being ridden on a straight road direction of movement also does not change, Hence proving that both option "C" and "D" are correct. I hope my answer was helpful. A very Happy New Year to all

Ans 4:

Class : Class 7
Both option C and option D are correct as since it is moving in constant speed, it's acceleration will be zero and the direction will not change as it was not mentioned and the particle is travelling on a straight road

Ans 5:

Class : Class 7
option c is correct as acceleration means change of speed

Ans 6:

Class : Class 9
Both C and D I prefer. SOF pls check

Ans 7:

Class : Class 7
option c is correct

Ans 8:

Class : Class 7
Both 'C' and 'D' are correct

Ans 9:

Class : Class 10
not c i think

Ans 10:

Class : Class 9
c and d

Ans 11:

Class : Class 9
Both C and D are correct

Post Your Answer

Subject :NSO    Class : Class 7

Ans 1:

Class : Class 9
I actually don't get the logic behind it

Ans 2:

Class : Class 7
Here the properties of lines and angles will be applied.Then the laws of reflection

Ans 3:

Class : Class 7
The correct is C

Ans 4: (Master Answer)

Class : Class 1
The correct answer is C.

Ans 5:

Class : Class 9
I am not able to understand it

Ans 6:

Class : Class 7
Answer is (a). This is observed due to this reasonThere's a line which is making an angle 55° and is a linear pair. Hence the angle of line (mirror) p is 180°. But 55° is not the angle of incidence. To get the sum of angle of incidence and reflection, we multiply 55° by 2 and get 70°. Since angle of incidence =angle of reflection, 70°÷2=35°. The angle of incident ray and the reflected ray of P and Q are same thus the sum of the angle of incidence and angle of reflection would be the same (70°). We know, angle of incidence=angle of reflection, hence 70°÷2=35°. Or A=35°

Post Your Answer