National Science Olympiad Forum By SOF Olympiad Trainer - Page 290
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Aditri Dixit from TCIS, Bangalore
Subject :NSO    Class : Class 3

Ans 1:

Aditri Dixit from TCIS, Bangalore
Class : Class 3

Ans 2:

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

Ans 3:

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

Ans 4:

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

Ans 5:

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

Ans 6:

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

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

Ans 1:

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

Ans 2:

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

Ans 3:

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

Ans 4:

Aditri Dixit from TCIS, Bangalore
Class : Class 3

Ans 5:

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

Ans 6:

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 7:

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

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Aditya from Gyanshree school , Noida
Subject :NSO    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.


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

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SAMRIDDHA PANDA from ST. MONFORT'S SENIOR SECONDARY SCHOOL, BARUIPUR
Subject :NSO    Class : Class 4

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DIVYA PRAKASH from ST.MICHAEL'S HIGH SCHOOL, PATNA
Subject :NSO    Class : Class 7

Ans 1:

Mrittika Roy from DPS Ruby Park, Kolkata
Class : Class 6

Ans 2:

Aarush from Podar, Mumbai
Class : Class 10
The answer is c

Ans 3:

Tanmay Chaudhary from MIET public school, MEERUT
Class : Class 7

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from dps north kolkata, Kolkata
Subject :NSO    Class : Class 7

Refer to the given figure of body cells and select the incorrect statements regarding X, Y and Z.

(i) Y maintains pH of blood.
(ii) Z is an important part of our immune system.
(iii) Z plays a key role in transporting gases in the blood.
(iv) The pigment present in X absorbs oxygen and transports it to the cells all over the body.

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


please explain

Ans 1:

soumil srivastava from dps, paradip
Class : Class 9
in this case picture depict is wrong . WBC should be smaller than RBC in size .

Ans 2:

PRIYANSHU DEB from New Green Field School, Saket, New Delhi
Class : Class 7
i think it should be D,

Ans 3:

MAyukh Ghosh from Birla Vidya Niketan, New Delhi
Class : Class 7
bro

Ans 4:

kartick Somasundaram from san academy, chennai
Class : Class 1
No, you are wrong

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Ashwak from Cambridge, Jalandhar
Subject :NSO    Class : Class 4

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