National Science Olympiad Forum By SOF Olympiad Trainer - Page 599
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Arrunabh from Delhi public school, Indore
Subject :NSO    Class : Class 3

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sanjana from NARAYANA E TECHNO , Chennai
Subject :NSO    Class : Class 3

Ans 1:

sanjana from NARAYANA E TECHNO , Chennai
Class : Class 8
good too good

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sanjana from NARAYANA E TECHNO , Chennai
Subject :NSO    Class : Class 3

Ans 1:

Mitul Tiwari from Lotus Valley International School, Noida
Class : Class 4
Cat and Tiger both are from Cat family

Ans 2:

sanjana from NARAYANA E TECHNO , Chennai
Class : Class 8
sanju very perfect

Ans 3:

Mohi from Vibgyor, Bangalore
Class : Class 6
C and D as they are from cat family

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yuvraj from Bhakti Vedanta Swami mission school, Mumbai
Subject :NSO    Class : Class 8

Which of the following statements are correct about planet Venus?
(i) It rotates from west to east while the Earth rotates from east to west.
(ii) It shows phases just like the Moon.
(iii) It appears in the eastern sky before sunrise and in the western sky just after sunset.
(iv) It has no satellite of its own.
(v) It is the second brightest star in the night sky.

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


Ans 1: (Master Answer)

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

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kpks14 from RIMT World School, Chandigarh
Subject :NSO    Class : Class 5

Ravi set up an experiment as shown below.

Which of the following holds true regarding set ups P and Q?

AIn set up P, the solution inside Visking tubing will become blue black at step II as all the starch is converted to simple sugars.
BIn set up Q, the solution inside Visking tubing will become blue black at step II as starch is not digested at all.
CIn set up P, the solution inside Visking tubing will become blue black at step II as starch is not digested by boiled amylase.
DIn set up Q, the solution inside Visking tubing will become blue black at step II as all the starch is converted to simple sugars by amylase.


c

Ans 1:

Sahishnu Jadhav from SSRVM, PUNE
Class : Class 8

Ans 2:

Sai Anshuman from De Paul , Berhampur
Class : Class 6

Ans 3:

Sai Anshuman from De Paul , Berhampur
Class : Class 6
Question was very nice.

Ans 4:

Sai Anshuman from De Paul , Berhampur
Class : Class 6

Ans 5:

Prisha Shah from Euroschool Airoli, Mumbai
Class : Class 6

Ans 6:

SHASHWAT PANDEY from D A V PUUBLIC SCHOOL, NEW PANVEL
Class : Class 5

Ans 7:

samanvay sinha from School of India, Bangalore, bengaluru
Class : Class 5
C not D

Ans 8:

Shreyasi Padihary from The Cambridge International School , Bangalore
Class : Class 6

Ans 9:

Bandana from ,
Class : Class 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


Ans 1:

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

Ans 2: (Master Answer)

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

Ans 3:

Satvik Agrawal from Delhi Public School, bhopal
Class : Class 5
howww

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Pradhyumna from J S S Public School, Bengaluru
Subject :NSO    Class : Class 4

Ans 1:

Dishita Santosh Walujkar from Nutan English School, Kurduwadi
Class : Class 7
yes,d

Ans 2:

vivaan sethi from GD goenka public school, Delhi
Class : Class 4
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.


Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is B.


Ans 2:

Ibrahim Aslam from uttam, Ghaziabad
Class : Class 5
B is correct answer!!!😇

Ans 3:

Sanaya Singh from Hiranandani Foundation, Mumbai
Class : Class 2
its b :|

Ans 4:

Ashwak from Cambridge, Jalandhar
Class : Class 9
B is the correct answer

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MRUDUL MAYANK MOHANTY from Loyola school , Bhubaneswar
Subject :NSO    Class : Class 8

Liquids and gaseous fuels have more advantages over solid fuels. Some of the advantages are
(i) Calorific value of liquid and gaseous fuels is higher than the solid fuels.
(ii) Liquids and gaseous fuels have higher ignition temperatures than the solid fuels.
(iii) Liquids and gaseous fuels are easier to store since solid fuels occupy lot of space.
(iv) Liquids and gaseous fuels burn completely, leaving no residue.
The correct advantages are

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


Ans 1:

Pranav Nayal from Birla Vidya Niketan, New Delhi
Class : Class 9
There is no fuel till now which can't burn without leaving any harmful residue.Thus , option A should be the answer

Ans 2:

tamojit das from techno India Group Public School , Chinsura
Class : Class 8
The information of study materials of this chapter from this site is wrong.Please rectify the data of study material.

Ans 3:

Aadvik saini from Mvn sector 17, Faridabad
Class : Class 8
C is the correct option , B is the wrong one

Ans 4:

Kriday from KDAV, Jamnagar
Class : Class 4
in the summary,it is already given that the first option is correct,still it dosent show so in the above question

Ans 5:

Jitendra Kumar Pareek from Maheshwari public school , Jaipur
Class : Class 8
C

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malavika suresh from Ryan International school , bangalore
Subject :NSO    Class : Class 3

Ans 1:

Daksha Neill from Somerville school, Delhi
Class : Class 7
Please explain why D.....

Ans 2:

subhang sarkar from Aditya Academy, Kolkata
Class : Class 3
anwser will be C

Ans 3:

Ashwak from Cambridge, Jalandhar
Class : Class 9
C

Ans 4: (Master Answer)

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

Ans 5:

Daksha Neill from Somerville school, Delhi
Class : Class 7
ignore the prior comment....

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