National Science Olympiad Forum By SOF Olympiad Trainer - Page 358
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Bipasana from KV IIT Kanpur, Kanpur
Subject :NSO    Class : Class 7

Ans 1:

bhargav balaji from National Public School, Bengaluru
Class : Class 9
The Answer should be A as not all asses and horses are pets so they would come outside the circle of pets.

Ans 2:

bhargav balaji from National Public School, Bengaluru
Class : Class 9

Ans 3:

Antareep Mukherjee from New Horizon Public School, Bangalore
Class : Class 8

Ans 4:

Ahan Biswas from National Public School, Bangalore
Class : Class 8

Ans 5:

Ahan Biswas from National Public School, Bangalore
Class : Class 8
The answer according to me should be A

Ans 6:

Adhrit from CHSV, Chennai
Class : Class 8
Answer should be A, who says all donkeys/asses and horses are domestic?

Ans 7:

Bipasana from KV IIT Kanpur, Kanpur
Class : Class 9

Ans 8:

Akshay Jha from DPS NERUL, Navi Mumbai
Class : Class 7
The answer should be A, there are wild horses and donkeys.

Ans 9:

Bipasana from KV IIT Kanpur, Kanpur
Class : Class 9
Why can't it be A? If we widen our perspective , we may recall that there are wild horses and wild asses. This will not come under the larger circle of PETS. And the pet horses and asses WILL come under the larger circle. You may say that I'm splitting hairs a bit but consider this! It may be option A

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Doofal from Sanskriti School, Delhi
Subject :NSO    Class : Class 6

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Juhan from Ism, Tiruvalla
Subject :NSO    Class : Class 6

Ans 1:

Pratul Kumar Sahoo from Presidium, Gurugram
Class : Class 4
hihihhihihihihihihihihihihihihihihihihihihihihihihhiihihihihihihihihihihihihihihihihi

Ans 2:

SITANSHU from SVKM SCHOOL, DHULE
Class : Class 7

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RUCHI from dps, Faridabad
Subject :NSO    Class : Class 7

Ans 1:

A from Thakur, Mu
Class : Class 8
IT MUST BE B

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

D


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Bhavya Jain from K.R Manglam World School, Ghaziabad
Subject :NSO    Class : Class 5

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Arnav Raj Sharma from GEMS International School the ultra master mega, Gurgaon
Subject :NSO    Class : Class 3

Ans 1:

Aditri Dixit from TCIS, Bangalore
Class : Class 3

Ans 2:

Nivaan Trisal from GIIS Banerghatta , Bangalore
Class : Class 3

Ans 3:

Nirvi Pal from jasudben ML School, mumbai
Class : Class 5
there is no nnnnnnnnnnnnnnnnnnn``ggBHDXC

Ans 4:

Shruti from ,
Class : Class 1
b

Ans 5:

ANISHKA MISHRA from SJS SCHOOL, ALLAHABAD
Class : Class 3

Ans 6:

Kashika Goel from DPS Noida, Noida
Class : Class 7

Ans 7:

Arnav Raj Sharma from GEMS International School the ultra master mega, Gurgaon
Class : Class 7
there is no solution

Ans 8:

ADVAY BANSAL from LOTUS VALLEY INTERNATIONAL SCHOOL GURUGRAM, GURUGRAM
Class : Class 6
THERE IS A SOLUTION AND IT IS A AIRMAIL

Ans 9:

Nirvi Pal from jasudben ML School, mumbai
Class : Class 5

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Amey Goyal from Delhi Public School, PANCHKULA
Subject :NSO    Class : Class 5

Ans 1:

Radhika Gupta from Dps civil lines aligarh , Aligarh
Class : Class 8
Well this one is so easy answer is A

Ans 2:

Amey Goyal from Delhi Public School, PANCHKULA
Class : Class 7

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Yakshita Rathor from Divine Child, Mumbai
Subject :NSO    Class : Class 9

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Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

C

Earth takes 24 hours for one complete rotation on its axis. If rotational speed of Earth is halved then it will complete one rotation in just double time i.e., 48 hrs. Earth completes one revolution in its orbit around Sun in about 365 days. If distance between Earth and Sun is doubled, i.e., radius of Earth's orbit is doubled then it will complete one revolution around Sun in just double time, i.e., 730 days.


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Mohammed Kashif Ahamed from Smt Kamalabai Educational Trust, Bangalore
Subject :NSO    Class : Class 6

Ans 1:

Kaushik N from Everwin Vidyashram , Chennai
Class : Class 7
According to the explanation given in the solution option B seems to be correct because broken pieces of magnet repel each other.

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