National Science Olympiad Forum By SOF Olympiad Trainer - Page 346
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VANSH GARG from DPSG, GHAZIABAD
Subject :NSO    Class : Class 4

Analyse the situation shown in the figure and select the correct option.


AWind will blow from P to Q if P is water body.
BWind will blow from Q to P if P is water body.
CWind will blow both sides from P to Q and Q to P if P is water body.
DWind will blow both sides from P to Q and Q to P if Q is water body.


abcdefghijklmnopqrstuvwxyz....................................................................................................................................................................................................................

Ans 1:

LAVANYA DADHWAL from BLOOM PUBLIC SCHOOL, South West Delhi
Class : Class 7

Ans 2:

Aarnav Appasaheb Pacharne from SHRI SHIVAJI PREPARETARY MILITRY DAY SCHOOL PUNE, pune
Class : Class 2

Ans 3:

Rohan Singhal from Manav Rachna International School, Gurgaon
Class : Class 5

Ans 4:

Rohan Singhal from Manav Rachna International School, Gurgaon
Class : Class 5
Explanation says wind will blow from land to sea .. hence ans should be B

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VANSH GARG from DPSG, GHAZIABAD
Subject :NSO    Class : Class 4

Ans 1:

VANSH GARG from DPSG, GHAZIABAD
Class : Class 4

Ans 2:

Adithya Sathyanarayanan from Chennai Public School, Chennai
Class : Class 6
c is the correct answer

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VANSH GARG from DPSG, GHAZIABAD
Subject :NSO    Class : Class 4

If the given clock is 42 minutes fast, then the correct time after half an hour is __________.



A1 : 05
B11 : 23
C12 : 23
D1 : 23


cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc

Ans 1:

Tavish Singh from Sanskriti School, Hyderabad
Class : Class 4
dddddddddddddddddddddddddddddddddddddddddddddddddddddddddd

Ans 2:

Shreyansh Saha from Dps Megacity, Kolkata
Class : Class 4

Ans 3:

Trishan Saha from Salt Lake School , Kolkata
Class : Class 4
Option C.

Ans 4:

VANSH GARG from DPSG, GHAZIABAD
Class : Class 4
cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc

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Yash Bindal from Global Indian International School, Singapore
Subject :NSO    Class : Class 9

Ans 1:

Dhairya Vinayak from Loyola High School, Patna
Class : Class 8

Ans 2:

AKHILESH from Chettin ad Vidyashram, Chennai
Class : Class 10

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Yash Bindal from Global Indian International School, Singapore
Subject :NSO    Class : Class 9

Match column I with column II and choose the correct option from the codes given below.

Column I Column II
P. Hot tea poured in saucer gets cooled faster. (i) Evaporation increases with increase in temperature.
Q. We feel more cold after a hot water bath than a cold water bath. (ii) Evaporation increases with decrease in humidity.
R. Water is cool in earthen pitcher during dry hot day. (iii) Evaporation increases with increase in wind speed.
S. We feel comfortable under a moving fan in summer. (iv) Evaporation increases with increase in surface area.


A P - (ii), Q - (i), R - (iii), S - (iv)
B P - (iii), Q - (iv), R - (ii), S - (i)
C P - (iv), Q - (i), R - (ii), S - (iii)
D P - (iv), Q - (ii), R - (iii), S - (i)


given answer is wrong.

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NANDAKISHOR from BHAVANS VIDYAMANDIR, COCHIN
Subject :NSO    Class : Class 5

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Suvan Shee from Chirec public school, Hyderabad
Subject :NSO    Class : Class 9

Study the given flow chart and choose the correct statements.
Sulphur + Coal powder + Common salt

(i) The property used to separate the mixture is solubility of different components in different solvents.
(ii) Sulphur is soluble in carbon disulphide, salt in water and coal is insoluble in both.
(iii) X is water and Y is carbon disulphide.

A (i) and (ii) only
B (ii) and (iii) only
C (i) and (iii) only
D All are correct.


its only 2 and 31 refers to chromatography

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Anunnakee Banerjee from BBPS NOIDA, NOIDA
Subject :NSO    Class : Class 2

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Anunnakee Banerjee from BBPS NOIDA, NOIDA
Subject :NSO    Class : Class 2

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Manish Saruparia from NPS Singapore, Singapore
Subject :NSO    Class : Class 2

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