National Science Olympiad Forum By SOF Olympiad Trainer - Page 287
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Rishik De Sarkar from Delhi Public School Gurgaon, Gurgaon
Subject :NSO    Class : Class 3

Ans 1:

Krishiv Chandan Sukul from Seven 11 Scholastic School, Mumbai
Class : Class 6
is all of these.

Ans 2:

Shibani Pal from cghs, Kolkata
Class : Class 3
all of these

Ans 3:

Rishik De Sarkar from Delhi Public School Gurgaon, Gurgaon
Class : Class 7

Ans 4:

Jdjdjdj from Delhi public school Bangalore east, Bangalore
Class : Class 3
Speed post

Ans 5:

Shyam Jayesh from Shyam Jayesh, Bangalore
Class : Class 3

Ans 6:

Yatindra G from SBOA, Chennai
Class : Class 4
speed post

Ans 7:

Samarth Arcot Praveen from National Public School Rajajinagar, Bangalore
Class : Class 4
the question framed incorrectly. It should have been sending wedding card at the earliest

Ans 8:

REYANSH RUDRANSHU from DELHI PUBLIC SCHOOL , DAMANJODI
Class : Class 3

Ans 9:

Sushree snehasikta behera from Mother's public school , Bhubaneswar
Class : Class 2
option a speed post

Ans 10:

Vivaan Joshi from Indira National School, Pune
Class : Class 4

Ans 11:

Arjun Bhamare from VIBGYOR HIGH, YERWADA , PUNE
Class : Class 3
the answer seems incorrect. One can send an invitation through all of the available resources. However, if one wants to send invitation speedily, then the option of Speed Post would be more correct.

Ans 12:

Shyam Jayesh from Shyam Jayesh, Bangalore
Class : Class 3

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Eklavya Gondule from DPS Bhilai, BHILAI
Subject :NSO    Class : Class 7

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Tarun S Hampali from National Public School, Bengaluru
Subject :NSO    Class : Class 6

Subhi, a class 6 student grouped together a few changes occurring around us as:
Group 1 : Blooming of flowers, breaking of glass, vaporisation of water, sawing of wood
Group 2 : Tides in the ocean, motion of a swing, landslides, occurrence of day and night
Group 3 : Rusting, germination of seeds, burning of fire crackers, growth of a child
Group 4 : Making a paper boat, blowing air into balloon, baking a roti, heating an iron rod
Select the odd one in each group and mention the property which makes it odd.

  Group 1 Group 2 Group 3 Group 4
A Blooming
of flowers
(Physical
change)		 Tides in
the ocean
(Periodic
change)		 Rusting
(Chemical
change)		 Making a
paper boat
(Physical
change)
B Breaking
of glass
(Irreversible
change)		 Occurrence
of day
and night
(Natural
change)		 Germination
of seeds
(Irreversible
change)		 Blowing
air into
balloon
(Reversible
change)
C Sawing
of wood
(Physical
change)		 Motion of
a swing
(Periodic
change)		 Growth
of a child
(Irreversible
change)		 Heating an
iron rod
(Chemical
change)
D Vaporisation
of water
(Reversible
change)		 Landslides
(Nonperiodic
change)		 Burning of
fire crackers
(Fast
change)		 Baking
a roti
(Chemical
change)


Ans 1:

Siddhartha from Bal Bharati Public school Rohini, Delhi
Class : Class 6
answer should be C

Ans 2:

SHUBHANG SINGH from DELHI PUBLIC SCHOOL REWARI, REWARI
Class : Class 6
Question is not properly framed

Ans 3:

Siddhartha from Bal Bharati Public school Rohini, Delhi
Class : Class 6

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Ved Pandhare from Lilavatibai Podar High School, Mumbai
Subject :NSO    Class : Class 8

Ans 1:

Student from School, City
Class : Class 8
None of these

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Ved Pandhare from Lilavatibai Podar High School, Mumbai
Subject :NSO    Class : Class 8

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Rishik De Sarkar from Delhi Public School Gurgaon, Gurgaon
Subject :NSO    Class : Class 3

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from DPSG, Ghaziabad
Subject :NSO    Class : Class 7

Ans 1:

shantanu from Wisdom World School, KURUKSHETRA
Class : Class 7
Copper are used as connecting wires because copperIs the second best conductor of electricity and it is Very cheap.

Ans 2:

Sarah Ahmad from st. mary's school, delhi
Class : Class 8
its not 'prob' it is 'probe' lol

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Snigdha swaminath from Christ nagar higher secondary school , Trivandrum
Subject :NSO    Class : Class 6

Ans 1:

Ojaswi from SAINT JOHNS CONVENT SCHOOL LANSDOWNE, DELHI
Class : Class 6

Ans 2:

Ojaswi from SAINT JOHNS CONVENT SCHOOL LANSDOWNE, DELHI
Class : Class 6

Ans 3:

Shreyansh Gupta from MVN, faridabad
Class : Class 6
but no buts

Ans 4:

shreyash from amaatra, bangalore
Class : Class 3

Ans 5:

Eashta Khodke from Elpro International School Chinchwad Pune, Pune
Class : Class 8

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Aaditya Malhotra from Isaac Newton Global School, Mumbai
Subject :NSO    Class : Class 5

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YASH SAH from DELHI PUBLIC SCHOOL MIS DOHA, Doha
Subject :NSO    Class : Class 7

Ans 1:

11 from 1111, 1111
Class : Class 7
i guess c

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