National Science Olympiad Forum By SOF Olympiad Trainer

samarveer from dpsg, dehradun

Subject :NSO Class : Class 4

Sir, I am unable to see books for science or math.please help me out.

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dhruv jain from JAYSHREE PERIWAL international school, Jaipur

Subject :NSO Class : Class 4

which is the largest fish in the world????

Ans 1:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram

Class : Class 7

The answer is- The blue whale.

Ans 2:

Vibhor Mudgal from GBN School, Faridabad

Class : Class 4

There Are 6 LARGEST Fishes in The World.(1) Great White Shark.(2) Beluga.(3) Greenland Shark.(4) Basking Shark.(5) Giant Oarfish.(6) Whale Shark.

Ans 3:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram

Class : Class 7

The answer is- The blue whale.

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SOMDATTA BHATTACHARYA from Delhi Public School, Dhaligaon, Bongaigaon

Subject :NSO Class : Class 4

How many squares are there in the figure below ?

(A) 15

(B) 16

(C) 21

(D) 22

Ans 1:

Himanshu Tiwari from Billabong High International School, Bhopal

Class : Class 4

22

Ans 2:

Himanshu Tiwari from Billabong High International School, Bhopal

Class : Class 4

22

Ans 3:

Aishi Asati from Global city international School, Bangalore

Class : Class 4

D

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Arundhathi from NATIONAL PUBLIC SCHOOL, CHENNAI

Subject :NSO Class : Class 4

do fruits fall from trees due to gravitational force?

Ans 1:

Himanshu Tiwari from Billabong High International School, Bhopal

Class : Class 4

Yes they do.

Ans 2: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

Yes!!

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ADITHI M from NARAYANA E TECHNO SCHOOL, BANGALORE

Subject :NSO Class : Class 4

In its first year of business, a company had 5 employees. In its second year, there were 25 employees, and in its third year, there were 125 employees. If the pattern continues, how many employees will the company have in the fourth year?

(A) 250

(B) 625

(C) 3,125

(D) 15,625

Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

The correct answer is B. The pattern is in increasing powers of 5.

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Pradhyumna from J S S Public School, Bengaluru

Subject :NSO Class : Class 4

Rati placed 3 gm each of food W, X, Y and Z in digestive juices E and F for 3 hours. After 3 hours, she recorded the amount of undigested food left in each digestive juice and plotted the graphs as shown below.

Based on the information deduced from the given graphs :
(i) Which of these foods W, X, Y and Z is rich in dietary fibres?
(ii) If digestive juice E is from saliva then which component in the given foods W, X, Y and Z is being digested?

A(i) - Z, (ii) - Starch
B(i) - W, (ii) - Starch
C(i) - Y, (ii) - Fats
D(i) - W, (ii) - Fats

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Ans 1:

Satvik Agrawal from Delhi Public School, bhopal

Class : Class 5

howww

Ans 2: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

The correct answer is B.

Ans 3:

Dishita Santosh Walujkar from Nutan English School, Kurduwadi

Class : Class 7

yes answer is b

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Pradhyumna from J S S Public School, Bengaluru

Subject :NSO Class : Class 4

Refer to the given food web. If all the F organisms are killed, which one of the following will happen?

AE would have to find new sources of food.
BZ would have more competitors for food.
CE would decrease in number.
DZ would eat more of E and G.

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Ans 1:

vivaan sethi from GD goenka public school, Delhi

Class : Class 4

D

Ans 2:

Dishita Santosh Walujkar from Nutan English School, Kurduwadi

Class : Class 7

yes,d

Ans 3: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

The correct answer is D.

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priyanshi gupta from opg world school , delhi

Subject :NSO Class : Class 4

Rohan flicked the same coin with equal force on three different surfaces X, Y and Z. The distance travelled by the coin on different surfaces in one stroke is tabulated as shown.

Now, select the correct option regarding it.

A X could be glass and Z could be cardboard.
B Y could be cardboard and Z could be polished plane mirror surface.
C X could be laminated plastic sheet and Y could be sandpaper.
D X could be marble floor and Z could be jute mat.

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Ans 1:

Ashwak from Cambridge, Jalandhar

Class : Class 9

B is the correct answer

Ans 2:

Ibrahim Aslam from uttam, Ghaziabad

Class : Class 5

B is correct answer!!!ð

Ans 3: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

The correct answer is B.

Ans 4:

Sanaya Singh from Hiranandani Foundation, Mumbai

Class : Class 2

its b :|

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Pradhyumna from J S S Public School, Bengaluru

Subject :NSO Class : Class 4

The given picture shows two boys trying to move a boat from the beach into the water. Identify the forces as represented with labelled arrows D, E and F?