National Science Olympiad Forum By SOF Olympiad Trainer - Page 437
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sharan from Gitanjali Primary School , Hyderabad
Subject :NSO    Class : Class 5

Ans 1:

Anjisha Chakraborty from Mount Litera Zee School, Jabalpur
Class : Class 5
Answer C - 15 Explanation 6 x 6 = 36 - 1 = 35 8 x 8 = 64 - 1 = 63 4 x 4 = 16 - 1 = 15

Ans 2:

sharan from Gitanjali Primary School , Hyderabad
Class : Class 5
sorry

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Aryan Raina from MGN Public School, Jalandhar
Subject :NSO    Class : Class 8

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from kalyan, Kalyan
Subject :NSO    Class : Class 5

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Chanpartap from The British Co Ed High School , Patiala
Subject :NSO    Class : Class 7

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Chanpartap from The British Co Ed High School , Patiala
Subject :NSO    Class : Class 7

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Sunita from Dps, Greater Noida
Subject :NSO    Class : Class 5

Ans 1:

from , rajahmundry
Class : Class 2
 Metals are generall sonorous. That is they make a ringing sound when struck. Therefore, they are used for making bells. Metal wires are used in musical instruments.  Metals such as iron are very strong. Therefore, it is therefore, widely used in the construction of buildings, bridges, railway lines, carriages, vehicles and machinery. SO,Ans is - D

Ans 2:

Sunita from Dps, Greater Noida
Class : Class 9
dt

Ans 3:

from , rajahmundry
Class : Class 2
 Metals are generall sonorous. That is they make a ringing sound when struck. Therefore, they are used for making bells. Metal wires are used in musical instruments.  Metals such as iron are very strong. Therefore, it is therefore, widely used in the construction of buildings, bridges, railway lines, carriages, vehicles and machinery. SO,Ans is - D

Ans 4:

from , rajahmundry
Class : Class 2
 Metals are generall sonorous. That is they make a ringing sound when struck. Therefore, they are used for making bells. Metal wires are used in musical instruments.  Metals such as iron are very strong. Therefore, it is therefore, widely used in the construction of buildings, bridges, railway lines, carriages, vehicles and machinery So,Ans is D

Ans 5:

from , rajahmundry
Class : Class 2
 Metals are generall sonorous. That is they make a ringing sound when struck. Therefore, they are used for making bells. Metal wires are used in musical instruments.  Metals such as iron are very strong. Therefore, it is therefore, widely used in the construction of buildings, bridges, railway lines, carriages, vehicles and machinery So,Ans is D

Ans 6:

from , rajahmundry
Class : Class 2
 Metals are generall sonorous. That is they make a ringing sound when struck. Therefore, they are used for making bells. Metal wires are used in musical instruments.  Metals such as iron are very strong. Therefore, it is therefore, widely used in the construction of buildings, bridges, railway lines, carriages, vehicles and machinery So,Ans is D

Ans 7:

from , rajahmundry
Class : Class 2
 Metals are generall sonorous. That is they make a ringing sound when struck. Therefore, they are used for making bells. Metal wires are used in musical instruments.  Metals such as iron are very strong. Therefore, it is therefore, widely used in the construction of buildings, bridges, railway lines, carriages, vehicles and machinery So,Ans is D

Ans 8:

from , rajahmundry
Class : Class 2
ans D

Ans 9:

from , rajahmundry
Class : Class 2
ans D

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Ishaan Roy from Sri Chaitanya Techno School, Bengaluru
Subject :NSO    Class : Class 7

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Ainesh das from Chrysalis, Bangalore
Subject :NSO    Class : Class 4

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Ajoy Bhuyan from DELHI PUBLIC SCHOOL, Bongaigaon
Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

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Ishaan Roy from Sri Chaitanya Techno School, Bengaluru
Subject :NSO    Class : Class 7

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