National Science Olympiad Forum By SOF Olympiad Trainer - Page 132
  1. Home
  2. /  Forum

User Forum

Ask Your Question
AArav priyadarshi from Delhi Public School, Vindhyanagar
Subject :NSO    Class : Class 6

A balloon attached to a hollow glass tube was submerged in a container of water as shown here. Rohan placed his mouth over the open end of the glass tube and blew air into it. He observed that the water level in the container rose.
This experiment tells us that air ___________.

(i) has mass
(ii) occupies space
(iii) has a definite volume
(iv) can be compressed

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


Ans 1:

Nischith Kumar N from Christ Academy ICSE School, Bangalore
Class : Class 6
it shows that it occupies space but doesn't show that it has mass

Ans 2:

advik vatsa from dps, Noida
Class : Class 7

Ans 3:

ARNAV MISHRA from delhi public school rohini, Delhi
Class : Class 6
yes

Ans 4:

Eksha from JBM GLOBAL SCHOOL, Noida
Class : Class 6
Ans:3 nishcit is right

Ans 5:

Arihant Medhi from Dps Barasat, Kolkata
Class : Class 7

Ans 6:

Kunsh arora from M.G.N public school, Kapurthala
Class : Class 6
This experiment shows that air occupies space but doesn't show that air has mass

Post Your Answer

Samriddhi Sen from Lfs, Jamshedpur
Subject :NSO    Class : Class 4

Post Your Answer

VIVIN JAIN from DPS Navi mumbai, Navi Mumbai
Subject :NSO    Class : Class 8

Post Your Answer

Anubrata Mondal from Hem sheela model school, Durgapur
Subject :NSO    Class : Class 10

Post Your Answer

NAITIK SRIVASTAVA from JYOTI NIKETAN SCHOOL, Azamgarh
Subject :NSO    Class : Class 9

Ans 1:

ATULYA GUPTA from VARDHAMAN PUBLIC SCHOOL, itarsi
Class : Class 10
Thanku thanku you saod like this I never knew

Ans 2:

Preeti Bansal from The Little Shri, Rohtak
Class : Class 9
it is 125% it is very easy copy this text and go on google baba you might find the answer

Post Your Answer

Advaith N from DPS, Bangalore
Subject :NSO    Class : Class 1

Post Your Answer

vaiishnavee sathish from NPS international school, singapore
Subject :NSO    Class : Class 7

The given graph shows changes in the pressure in lungs during breathing.

Which of the following is incorrect regarding this?
(i) Region R to T represents inhalation.
(ii) Region P to R represents inhalation.
(iii) Region P to R represents exhalation.
(iv) Rib cage will move upward and diaphragm will get flattened at point S.
(v) Rib cage will move downward and diaphragm will become dome shaped at point S.

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


hi

Ans 1:

SAMPAD BANERJEE from DELHI PUBLIC SCHOOL , BILASPUR
Class : Class 9

Ans 2:

Nivriti from Euro, Mumbai
Class : Class 8
the aanswer is A , even the explanation that is given proves so...

Ans 3:

Nivriti from Euro, Mumbai
Class : Class 8
sorry B not ABut Definitely not C

Ans 4:

Asank Kumar from Delhi Public School, navi mumbai
Class : Class 9

Post Your Answer

Rifa Khan from Rps public school , Bhiwadi
Subject :NSO    Class : Class 8

Read the given statements and select the correct option.
Statement 1 : Combustion is a chemical process in which a substance reacts with oxygen to give off heat and at times light.
Statement 2 : Heat and light produced in sun are due to combustion

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 and statement 2 is false.
DBoth statements 1 and 2 are false.


Why statement 2 is false sun also do combustion by chemical reactions, right?

Post Your Answer

Rifa Khan from Rps public school , Bhiwadi
Subject :NSO    Class : Class 8

Post Your Answer

Samitha Kumar from Boaz Public School , Chennai
Subject :NSO    Class : Class 9

Post Your Answer