National Science Olympiad Forum By SOF Olympiad Trainer - Page 657
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Atharva Prakash Bhosale from St.Xaviers High School Kolhapur, Kolhapur
Subject :NSO    Class : Class 7

Ans 1:

Ritobhash Bhattacharya from DAV Model School, Kharagpur
Class : Class 7
We could draw an imaginary line from C perpendicular to EC and parallel to AB dividing angle y into 2 parts and marking the point as R. Now RCA = CAB =22 as they are alternate interior angles & RCE = ECD = 90. So angle y will be equal to 90+22=112.

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Mayank Gupta from Kulachi Hansraj Model School, New Delhi
Subject :NSO    Class : Class 7

Ans 1:

Medha Bhutani from Christ Academy, Bengaluru
Class : Class 9
none of these because gall bladder stores bile and doesn't produce it.

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OISHIK KUNDU from Delhi Public school North kolkata, baranagar
Subject :NSO    Class : Class 4

Ans 1:

Pranav Kiran Rajarathna from The Samhita Academy, Bangalore
Class : Class 9
I really didn't understand

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is B.

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guruprasad mishra from Sanskar public school , Raigarh
Subject :NSO    Class : Class 7

Ans 1:

Sriyansh from Surabhi , Hosapete
Class : Class 9
130

Ans 2:

Ritobhash Bhattacharya from DAV Model School, Kharagpur
Class : Class 7
We could draw an imaginary line from D in a straight line till it meets line segment AB and mark the point as Q.Since we know that the sum of the 2 interior opposite angles is equal to the opposite exterior angle, so 45 + 50 = angle AQD = 95.Using the same property 35 + 95 = x = 130.

Ans 3:

Ritobhash Bhattacharya from DAV Model School, Kharagpur
Class : Class 7

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PRATYUSH SINGH from THE KHAITAN SCHOOL, NOIDA
Subject :NSO    Class : Class 3

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Roshan Choudhary from Aps tezpur , Tezpur
Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is C.

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YASH SAH from DELHI PUBLIC SCHOOL MIS DOHA, Doha
Subject :NSO    Class : Class 5

Ans 1:

Devina kashyap from TPS, Mumbai
Class : Class 4

Ans 2:

Mystic Girl from NPS, Bnagalore
Class : Class 6

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Daivik Goel from Delhi public school , Vadodara
Subject :NSO    Class : Class 4

Ans 1:

Daivik Goel from Delhi public school , Vadodara
Class : Class 4
d)Yuri Gagarin

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Shagun from MAXFORT DWARKA, New Delhi
Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is B.

Ans 2:

PALAKSH YADU from DELHI PUBLIC SCHOOL BHILAI, BHILAI
Class : Class 4

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Rohan Naik from Vibgyor High, Bangalore
Subject :NSO    Class : Class 4

Ans 1:

Ridhan from SFS janakpuri, New Delhi
Class : Class 5
the answer is A because it require pull force and others require push force

Ans 2:

Rutu Jamdar from The Orchid School, Pune
Class : Class 8

Ans 3: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is A.

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