National Science Olympiad Forum By SOF Olympiad Trainer - Page 253
  1. Home
  2. /  Forum

User Forum

Ask Your Question
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

Post Your Answer

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

Ans 1:

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

Ans 2:

Aditri Dixit from TCIS, Bangalore
Class : Class 3

Ans 3:

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

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:

Aditri from doha modern indian school, doha
Class : Class 6

Post Your Answer

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

Ans 1:

Aditri Dixit from TCIS, Bangalore
Class : Class 3

Ans 2:

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

Ans 3:

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

Ans 4:

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

Ans 5:

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

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:

Shrihan Koley from Radiant International School , Patna
Class : Class 3

Post Your Answer

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

Ans 1:

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

Post Your Answer

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

Post Your Answer

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

Post Your Answer

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

Post Your Answer

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

Post Your Answer

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 3

Ans 2:

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

Ans 3:

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

Post Your Answer

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:

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

Ans 2:

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

Ans 3:

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

Ans 4:

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

Post Your Answer