National Science Olympiad Forum By SOF Olympiad Trainer

User Forum

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 8
Option A says involuntary muscles are controlled by brain. It is correct as medulla controls all our involuntary actions. Option B and C are correct as the cardiac muscles are also called as smooth muscles, so statement d is incorrect as the muscles present in our arms and legs are called skeletal or voluntary muscles

Ans 2:

Class : Class 3

Ans 3:

Class : Class 4
d

Post Your Answer

Subject :NSO    Class : Class 4

Ans 1:

Class : Class 6
b is the correct answer.

Post Your Answer

Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

Class : Class 1
The correct answer is D.

Post Your Answer

Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
because the numbers on the opposite faces of a dice always add up to 7. and 5+2=7

Post Your Answer

Subject :NSO    Class : Class 1

Ans 1:

Class : Class 1
1. Jaya said all natural things can breathe. All natural things cannot breathe. Mountain is natural but cannot breathe.2. Rati said all non living things can be moved ( they can move by themselves). No, not all living things can move. Train can move, but it can only move with human's power.3.Sonu said man made things can reproduce. No, man made things cannot reproduce so the answer is D as all of them are incorrect

Ans 2:

Class : Class 3
Ans: C

Post Your Answer

Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
The correct answer is D because if you draw the axis and the equator, it will make a sign like a tilted x and the option that most relates to the shape we've received is option D(Master Answer)

Ans 2:

Class : Class 5

Ans 3:

Class : Class 4
The earth is tilted on its axis and the equator divides the earth into northern hemisphere and Southern Hemisphere. So, if we just imagine to remove the planet and just leave the axis and equator, we will get an X. To visualise take a piece of paper and rool it into a ball and draw a in the middle. Then tilt it a bit and you will get a model of the earth. Then it forms a X. So the answer is D.

Ans 4:

Class : Class 8
hey you inknoledgeble (SOF)

Ans 5:

Class : Class 5
Answer should be D because equator is not slanting but if we mix equator and axis of the earth it will be criss crossed.

Ans 6:

Class : Class 6

Ans 7:

Class : Class 8
(MASTER ANSWER) NONE OF THESE SHOULD BE THE ANSWER

Ans 8:

Class : Class 4
A as D shows criss crossed lines and equator isn't like that

Post Your Answer

Subject :NSO    Class : Class 4

Some children wanted to find out how overcrowding can affect plant growth. They took four pairs of plants, A, B, C and D, as shown here and kept them at the same location. Each pot is given the same amount of water each day. Which pair of plants will give the correct result of their experiment?

A
B
C
D


in option C the amount of soil is the same but in the first pot there are less flowers and in the other pot there are more flowers and they both havegood soil

Ans 1:

Class : Class 4

Ans 2:

Class : Class 4
Dear friends, see the question and the options clearly.As they have said in the question, the experiment is on how overcrowding affects plant growth.For that, the conditions in which the plant(s) are growing should be the same. That means that the amount of sunlight, amount of water, amount of soil and condition of soil should be the same, whereas the number of plants growing in one pot, should not..As we are assured in the question, they are already giving the same amounts of sunlight and water to the plants.We only have to see that the amount and condition of soil is the same, and that, my friends, is only in option 'C'.So, that i.e option 'C', is the correct answer.

Ans 3:

Class : Class 5
C is the anwser

Ans 4:

Class : Class 4

Ans 5:

Class : Class 5
my C and D are same

Ans 6:

Class : Class 4
No one will see mohhika

Ans 7:

Class : Class 7
C

Ans 8:

Class : Class 5
c is right

Ans 9:

Class : Class 5
C is the anwser

Ans 10:

Class : Class 4

Ans 11:

Class : Class 7
C

Ans 12:

Class : Class 4
c answer is corect

Ans 13:

Class : Class 4
YAR AGAR NCO HOTA 2020 MEIN TO MAZA AATA KYON KI LAST YEAR MAIN THA WINNER

Ans 14:

Class : Class 8

Ans 15:

Class : Class 5
Answer should be C because good soil means soil having essential nutrients and poor soil means the soil which is not having essential nutrients.In the option C,the checking of soil is by purity.In option D,the soil amount is different.

Ans 16:

Class : Class 5
the options C and D are same

Post Your Answer

Subject :NSO    Class : Class 4

The given graph is plotted according to the recordings of an experiment to find out the effect of temperature on the rate of photosynthesis in an aquatic plant. Based on the given graph, select the correct option.


A Photosynthesis occurs best at 35°C.
B No photosynthesis takes place at 5°C and 45°C.
C The volume of oxygen collected keeps increasing with increasing temperature.
D Volume of oxygen collected at 15°C is higher than that collected at 40°C temperature.


oxygen is not taken by plants during photosynthesis

Ans 1:

Class : Class 4

Ans 2:

Class : Class 5
Answer is A because the straight line shows in which temperature photosynthesis occurs best.

Ans 3:

Class : Class 4

Ans 4:

Class : Class 4

Ans 5:

Class : Class 3
the answer is A

Ans 6:

Class : Class 7
* Harsh are you mad , the volume of oxygen collected at 15 degree Celsius is lower than the volume of oxygen collected at 40 degree Celsius *

Ans 7:

Class : Class 4
the answer is a

Ans 8:

Class : Class 5
I agree with harsh

Ans 9:

Class : Class 4

Ans 10:

Class : Class 6

Ans 11:

Class : Class 5
the answer can be a and d

Ans 12:

Class : Class 5
the answer can be both a and photosynthesis happen best at 35 degree cand the volume of oxygen collected in 15dc is more than 45dc.

Ans 13:

Class : Class 7
Option ( A ) is correct because the graph shows that Photosynthesis best occurs at 35 degree Celsius

Post Your Answer

Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
Answer is C because the graph is showing different levels of O2 in the atmosphere and Y has less oxygen in the atmosphere.

Ans 2:

Class : Class 7

Post Your Answer

Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
D

Ans 2:

Class : Class 5
Answer is D because Venus has the high amount of carbon dioxide which traps the heat of the sun.

Post Your Answer