National Science Olympiad Forum By SOF Olympiad Trainer - Page 265
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SHASHWAT PANDEY from D A V PUUBLIC SCHOOL, NEW PANVEL
Subject :NSO    Class : Class 5

Ans 1:

Ishaan Singh from BBPS, Gurugram
Class : Class 7
B for big apple

Ans 2:

shaurya from St Gregorios High school, Mumbai
Class : Class 5
B

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Anurag Anand from Surendranath centenary school , Ranchi
Subject :NSO    Class : Class 6

Read the given statements and select the correct option.
Statement 1 : Roughage do not give us any nutrients but it prevents constipation.
Statement 2 : Roughage adds bulk to the faeces and keeps it soft, to ensure the smooth movement of waste down the intestine and colon.

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: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

A

 


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Sharvari Joshi from VIBGYOR High Balewadi, Pune
Subject :NSO    Class : Class 8

Ans 1:

Siya Aneja from Tagore International , SOUTH DELHI
Class : Class 8
(A)

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Prisha Shah from Euroschool Airoli, Mumbai
Subject :NSO    Class : Class 5

Ashish was performing an experiment by setting up an arrangement as shown in the figure.

Which of the following relations holds correct regarding the amount of water that got collected in beakers 1, 2 and 3 after an hour?

A Beaker 1 > Beaker 2 > Beaker 3
B Beaker 1 > Beaker 3 > Beaker 2
C Beaker 3 > Beaker 1 > Beaker 2
D Beaker 3 > Beaker 2 > Beaker 1


The correct answer should be A because water is least absorbed by sandy soil and is absorbed the most by clayey soil.

Ans 1:

Ishti Rawat from Pawar Public School, Pune
Class : Class 5
we use clay pots because they do not absorb water so beaker 1 will have most water. while making sandcastles we put water in soli because sand absorbs water the most, thus leading to the fact that in beaker 3 least water will be there. thus, i think that the correct answer is A

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Aditri Dixit from TCIS, Bangalore
Subject :NSO    Class : Class 3

Ans 1:

Jia Dogra from Strawberry fields High School, Chandigarh
Class : Class 4

Ans 2:

Aditri Dixit from TCIS, Bangalore
Class : Class 3

Ans 3:

Avighna Shastri from doha modern indian school, doha
Class : Class 2

Ans 4:

SOMDATTA BHATTACHARYA from Delhi Public School, Dhaligaon, Bongaigaon
Class : Class 5
good

Ans 5:

Jia Dogra from Strawberry fields High School, Chandigarh
Class : Class 4

Ans 6:

Jia Dogra from Strawberry fields High School, Chandigarh
Class : Class 4
Guys easy peasy lemon squizzy soooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo EASY ans. is ''B''

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Aditri Dixit from TCIS, Bangalore
Subject :NSO    Class : Class 3

Ans 1:

Shrihan Koley from Radiant International School , Patna
Class : Class 4

Ans 2:

Kanishk bhati from G D goenka school gzb, ghaziabad
Class : Class 3
easy

Ans 3:

Sidharth V from Hindustan International School, Chennai
Class : Class 4
See a square has 4 corners a line is runing in between the square and the rest goes like right edge of the square and goes to top edge of the square.Hence the answer is option B

Ans 4:

Ava from trio, bangalore
Class : Class 2
Yup though solution is hard to understand for me

Ans 5:

Aditri Dixit from TCIS, Bangalore
Class : Class 3

Ans 6:

Bhavika Pawar from D A V Public school, Thane West, Thane West
Class : Class 3
answer is-B

Ans 7:

Bhavika Pawar from D A V Public school, Thane West, Thane West
Class : Class 3
Very easy question

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Aditya from Gyanshree school , Noida
Subject :NSO    Class : Class 5

Ans 1:

Dishant Dutta from St Georges school, New Delhi
Class : Class 5

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Yakshita Rathor from Divine Child, Mumbai
Subject :NSO    Class : Class 9

Earthquakes generate sound waves inside the earth. Unlike a gas, the earth can experience both transverse S and longitudinal P sound waves. Typically the speed of S wave is about 4.0 km s-1, and that of P wave is 8.0 km s-1. A seismograph records P and S waves from an earthquake. The first P wave arrives 4 minutes before the first S wave. Assuming the waves travel in straight line, at what distance does the earthquake occur?

A 960 km
B 640 km
C 1920 km
D 2880 km

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Shriya from Dr CL Metha Shishya, Chennai
Subject :NSO    Class : Class 9

Read the given statements and mark the correct option.
Statement 1 : Bohr's orbits are called stationary orbits.
Statement 2 : Electrons remain stationary in these orbits for some time.

A Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
B Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
C Statement 1 is true and statement 2 is false.
D Both statements 1 and 2 are false.


Ans 1:

Shriya from Dr CL Metha Shishya, Chennai
Class : Class 10

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Dushyant Singh from Shri Ram Centennial School, Indore
Subject :NSO    Class : Class 5

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