National Science Olympiad Forum By SOF Olympiad Trainer - Page 696
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SAINITHIN from DAV PUBLIC SCHOOL, Chennai
Subject :NSO    Class : Class 4

Ans 1:

Nidhesh Agarwal from Chinmaya vidyalaya, Bokaro steel city
Class : Class 4

Ans 2:

Nidhesh Agarwal from Chinmaya vidyalaya, Bokaro steel city
Class : Class 4
answer is 87

Ans 3:

Nishit Vaity from Euro School Airoli, Navi Mumbai
Class : Class 6
ans is 87

Ans 4:

Priyam Bhattacharya from cambridge court high school, jaipur
Class : Class 6
ans is 87

Ans 5:

Ajoy Bhuyan from DELHI PUBLIC SCHOOL, Bongaigaon
Class : Class 4

Ans 6:

Saarth Agrawal from Podar International School , Mumbai
Class : Class 6
Answer is 64 because it is mentioned that 2/5 cars left IN the parking,

Ans 7:

Sourish Mahakul from Delhi Public School Electronic City, Bengaluru
Class : Class 8
ans is 87

Ans 8:

Ajoy Bhuyan from DELHI PUBLIC SCHOOL, Bongaigaon
Class : Class 4

Ans 9:

Dishita Santosh Walujkar from Nutan English School, Kurduwadi
Class : Class 7
answer is 64

Ans 10:

Saarang roy from Indian school ghubra, Muscat
Class : Class 6
yes answer is 87

Ans 11:

Samiksha Sharma from VV Dav Public School, New Delhi
Class : Class 4
It is 87 Because 2/5cars left means 46 cars left so remaining vehicles left are 69 cars + 18 cycle =87 vehicles

Ans 12:

Satvik Agrawal from Delhi Public School, bhopal
Class : Class 5
ans is 87 everybody please write in the error and saarth is mad

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Shreya Sampathkumar from Christ Academy, Bengaluru
Subject :NSO    Class : Class 9

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is B.

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Shreya Sampathkumar from Christ Academy, Bengaluru
Subject :NSO    Class : Class 9

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Shreya Sampathkumar from Christ Academy, Bengaluru
Subject :NSO    Class : Class 9

Ans 1:

risha from bluebells school international kailash colony, New Delhi
Class : Class 9
OPTION C

Ans 2:

Aravinda Venkatesan from Gd Goenka school indrapuram, Ghaziabad
Class : Class 9
please give explanation

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Shreya Sampathkumar from Christ Academy, Bengaluru
Subject :NSO    Class : Class 9

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is B.

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Shreya Sampathkumar from Christ Academy, Bengaluru
Subject :NSO    Class : Class 9

Which of the following statements is/are incorrect?
(i) A body moving with varying velocity may have constant speed.
(ii) If velocity of a body is varying, its speed must be varying.
(iii) A body moving with varying speed may have constant velocity if its direction of motion remains constant.
(iv) A body moving with varying speed may have constant velocity if it has zero acceleration.

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


Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is C.

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Shreya Sampathkumar from Christ Academy, Bengaluru
Subject :NSO    Class : Class 9

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is D.

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Shreya Sampathkumar from Christ Academy, Bengaluru
Subject :NSO    Class : Class 9

Read the given statements and select the correct option.
Statement 1 : The acceleration due to gravity on the moon is only one sixth that on the earth. If the earth and moon are assumed to have same density, then the ratio of the radii of moon and earth will be 1:√6.
Statement 2 : Acceleration due to gravity does not depend upon the density of material.

ABoth statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
BBoth statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
CStatement 1 is true but statement 2 is false.
DBoth statements 1 and 2 are false.


Ans 1:

dnyaneshwar shinde from Maratha highschool Nashik, Nashik
Class : Class 9
Please give explanation

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Shreya Sampathkumar from Christ Academy, Bengaluru
Subject :NSO    Class : Class 9

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is C.

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Shreya Sampathkumar from Christ Academy, Bengaluru
Subject :NSO    Class : Class 9

In an experiment to determine the speed of sound, a gun was fired and an observer at a certain distance (x) away measured the time interval (t) between seeing the flash and hearing the shot. Then the speed of sound in air is calculated by x/t.
Which of the following will affect the result?
(i) Temperature of the environment.
(ii) Pitch of the gunshot.
(iii) Wind blowing from the gunner to the observer.
(iv) Loudness of the gunshot.
(v) Wind blowing from the observer to the gunner.
(vi) Quality of sound by gunshot.

A(i), (iii) and (iv)
B(i), (iii) and (v)
C(i), (ii), (iii) and (vi)
D(ii), (iv), (v) and (vi)


Ans 1:

Aditi Agrawal from Sunbeam School Bhagwanpur, VARANASI
Class : Class 9
How come temp does not affect the experiment?

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