National Science Olympiad Forum By SOF Olympiad Trainer - Page 595
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Mridul Jain from Shishukunj International School Indore, Indore
Subject :NSO    Class : Class 5

Ans 1:

Aadi from Treamis World School, Bangalore
Class : Class 9
The correct answer is B As 25 into

Ans 2:

Sourav Jena from ODM public school , BHUBANESWAR
Class : Class 4

Ans 3:

Nakul Bhasker from National Public School Whitefield, Bangalore
Class : Class 5
Yes very tough... didn't understand until I looked at the forum, the didn't even give solution.

Ans 4:

Ekansh Sharma from VidyaShilp Academy, Bengaluru
Class : Class 6
Thank you adminplz answer for the other questions also

Ans 5:

Karthik Reddy Munnangi from Chirec International School, Hyderabad
Class : Class 8
Tough Question. I agree.

Ans 6:

Shauryadeep from DPS megacity, Kolkata
Class : Class 5

Ans 7:

Medha Bijjaram from Prime Academy, Mumbai
Class : Class 9

Ans 8:

ALICE from Delhi Public School, UDAIPUR
Class : Class 9
Correct answer might be B.

Ans 9:

Ashwak from Cambridge, Jalandhar
Class : Class 9
Tough question ... Not for class 5 , I'm sure !!!

Ans 10:

Anusha Agarwal from Convent of jesus and Mary st Anthony junior college , Agra
Class : Class 8

Ans 11:

Rishabh Rathi from Blue Ridge Public School, Pune
Class : Class 5
The answer is B.Because,(upper left corner X upper right corner) - (lower left corner X lower right corner) = Middle Number.

Ans 12:

komal from A.V.M, Mumbai
Class : Class 1
Very tough for 5 th grade

Ans 13:

Ashwak from Cambridge, Jalandhar
Class : Class 9
B

Ans 14:

Krethick Ravichandran from FIITJEE GLOBAL SCHOOL , India
Class : Class 9

Ans 15:

DIVYAM RAMESH SHARMA from GUNDECHA EDUCATION ACADEMY, Mumbai
Class : Class 4

Ans 16:

DIVYAM RAMESH SHARMA from GUNDECHA EDUCATION ACADEMY, Mumbai
Class : Class 4
this is a tough question

Ans 17:

Debarpan Das from Delhi Public School , Durgapur
Class : Class 9
Can't understand which formula to be applied

Ans 18: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is B.

In the first figure 25 X 15 - 12 X 14 = 207

In the 2nd figure, 16 X 17 - 10 X 12 = 152

Similarly, in the third figure, 25 X 25 - 21 X 18 = 247

Hence, the missing number is 25


Ans 19:

shaurya singh mandla from vibgyor high, Mumbai
Class : Class 9
Toughest Question ever

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Anirudh from Kendriya Vidyalaya Kanjikode, Palakkad
Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

Chemical products derived from petroleum are called petrochemicals. Some of the major petrochemicals are acetylene, benzene, ethane, ethylene, methane, propane, and hydrogen, from which many other chemicals are derived.


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Anirudh from Kendriya Vidyalaya Kanjikode, Palakkad
Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

Full form of : LCD - Liquid Crystal Display, and LED - Light Emitting Diode 


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Anirudh from Kendriya Vidyalaya Kanjikode, Palakkad
Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is A.

Antonie van Leeuwenhoek is commonly known as the 'Father of Microbiology'.

 


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SHOURYA RAWAT from Venkat International Public School, BANGALORE
Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is A.

The rate of evaporation will be the fastest in container A as the exposed surface area of water is maximum there.


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Dhruvan G from Indian School al Ghubra, Muscat
Subject :NSO    Class : Class 8

Ans 1:

Anirudh from Kendriya Vidyalaya Kanjikode, Palakkad
Class : Class 8
It signifies crop rotation.

Ans 2:

AASHU SINHA from fortuna shine school, purnia
Class : Class 9

Ans 3:

Jayad Khaitan from St Xaviers Collegiate School, KOLKATA
Class : Class 8

Ans 4:

Anoushka Anbu from Amara Jyoti Public School, Bengaluru
Class : Class 8

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Dhruvan G from Indian School al Ghubra, Muscat
Subject :NSO    Class : Class 8

Ans 1:

Anirudh from Kendriya Vidyalaya Kanjikode, Palakkad
Class : Class 8
The answer is option 'A'.

Ans 2:

Ahdiya Sharik from St Thomas public school, Trivandrum
Class : Class 8

Ans 3:

Santhosh M from PSBB Millennium OMR, Chennai
Class : Class 9

Ans 4:

Ayush Pal from GD Goenka Public School Dakshineswar, West Bengal, India, Kolkata
Class : Class 8

Ans 5:

Gaurish Singla from DPS School Sector 19, Faridabad
Class : Class 8

Ans 6:

Sharan from Podar, Mysore
Class : Class 10

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kshitij from st anslem senior secondary school, Jaipur
Subject :NSO    Class : Class 7

Ans 1:

Pisal Dhruv from Veer Bhagat Singh International School, Mumbai
Class : Class 7
E = mc2. An equation derived by the twentieth-century physicist Albert Einstein, in which E represents units of energy, m represents units of mass, and c2 is the speed of light squared, or multiplied by itself.

Ans 2:

Anirudh from Kendriya Vidyalaya Kanjikode, Palakkad
Class : Class 8
E(energy)=m(mass)*c(speed of light in vacuum)2.... speed of light in vacuum=3.00 x 108(10x10x10x10x10x10x10x10).... It means that there is much more energy stored inside the nucleus of an atom than in its valence electrons. The energy released from splitting an atom is much higher than that of breaking electron bonds.

Ans 3:

Pisal Dhruv from Veer Bhagat Singh International School, Mumbai
Class : Class 7
in simple terms "Energy equals mass times the speed of light squared." On the most basic level, the equation says that energy and mass (matter) are interchangeable; they are different forms of the same thing. Under the right conditions, energy can become mass, and vice versa.

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kshitij from st anslem senior secondary school, Jaipur
Subject :NSO    Class : Class 7

Ans 1:

abhinav from fitjee world school, Hyderabad
Class : Class 8
Energy=mass*(speed of light)^2

Ans 2:

Dheeraj from Sri Sri Ravishankar Vidya Mandir, Bangalore
Class : Class 7
Energy=mass x mass x capacity x capacity

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Vaishnavi from Gear International School, Bengaluru
Subject :NSO    Class : Class 6

Ans 1:

Parth Kaushish from MDPS, Faridabad
Class : Class 6
b is correct if an explanation is required then click on solution

Ans 2:

Bhavtosh Tripathi from Maneckji Cooper Education Trust School, Mumbai
Class : Class 9
B

Ans 3:

Rishab from OWS, New Delhi
Class : Class 7

Ans 4:

Aadhira from velammal new gen school, Medavakkam, Chennai
Class : Class 6
(B) is the correct answer.

Ans 5:

Aadvik saini from Mvn sector 17, Faridabad
Class : Class 8
please explain

Ans 6:

Kanishk Mukherjee from BDM International, Kolkata
Class : Class 6

Ans 7:

Vihaan Binaykia from Riverside, AHMEDABAD
Class : Class 5
C

Ans 8:

Smita De from Bishop Cotton Girls School, BANGALORE
Class : Class 6
explanation

Ans 9:

A S Neeraj from K V 2, Chennai
Class : Class 6

Ans 10:

Vihan agarwal from Bal Bharati Public School , Delhi
Class : Class 8
THIS IS PRETTY ADVANCED STUFF FOR KIDS OF CLASS 6

Ans 11:

Eashta Khodke from Elpro International School Chinchwad Pune, Pune
Class : Class 8
the ans will be B as the question tells us that the opaque dot is in the center ,IN THE CENTER aka it will be same all over

Ans 12:

Pavani Soni from VYDEHI , Bengaluru
Class : Class 8

Ans 13:

SAMRA BISWAS from KENDRIYA VIDYALAYA BARRACKPORE AIRFORCE, BARRACKPORE
Class : Class 9
[B] is the correct answer......

Ans 14:

Pavani Soni from VYDEHI , Bengaluru
Class : Class 8

Ans 15:

Manvi Mundepi from Montfort School Roorkee, Roorkee
Class : Class 9
EXPLAIN

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