National Science Olympiad Forum By SOF Olympiad Trainer - Page 131
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Katyayan from Padma She Shadri GyanGun Nagar Sineor Secendry School, Chennai
Subject :NSO    Class : Class 3

Ans 1:

Vishwas kanani from Apollo international school , AHMEDABAD
Class : Class 4
D HEALS IS NOT GOOD FOR CHILD

Ans 2:

Vishwas kanani from Apollo international school , AHMEDABAD
Class : Class 4
D HEALS IS NOT GOOD FOR CHILD

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Archisha Yadu from Krishna Public School Dunda Raipur, Raipur
Subject :NSO    Class : Class 5

Ans 1:

Suman maity from GK Public school, Khejuri
Class : Class 5
EARTH QUACK

Ans 2:

Devesh Digrase from Gyanmata , Nanded
Class : Class 5
Earthquake

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KRISHNARGHYA PRAMANIK from DELHI PUBLIC SCHOOL, MEGACITY, KOLKATA WEST BENGAL
Subject :NSO    Class : Class 1

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Snigdha Agarwal from The Khaitan School, Noida
Subject :NSO    Class : Class 3

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Adrija Guria from Egra Public School , Egra
Subject :NSO    Class : Class 3

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Student from School, City
Subject :NSO    Class : Class 9

Read the given statements and mark the correct option.
Statement 1 : Solid CO2 changes its state when exposed to air.
Statement 2 : CO2 undergoes sublimation.

A Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
B Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
C Statement 1 is true and statement 2 is false.
D Both statements 1 and 2 are false.


CHanges its state is not explaned

Ans 1:

Pragnya Paramita Swain from VSV, Sunabeda Koraput
Class : Class 9
Option A - Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1. Because, when solid CO2 is exposed to air it changes into gaseous state i.e. it undergoes "SUBLIMATION". Therefore option A is correct.....

Ans 2:

Rishi Gopi from Loyola, Trivandrum
Class : Class 9
very true

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KRISHNARGHYA PRAMANIK from DELHI PUBLIC SCHOOL, MEGACITY, KOLKATA WEST BENGAL
Subject :NSO    Class : Class 1

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Abhigy verma from svm residential public school, patna
Subject :NSO    Class : Class 5

Ans 1:

Dhruv sharma from Manav Rachna International School, Faridabad
Class : Class 6
P shows head Q show cerebrum R shows cerebellum and S shows medulla oblongata . Hence b is the correct Answer

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Sudeep from Coyote Creek, San Ramon
Subject :NSO    Class : Class 1

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Sudeep from Coyote Creek, San Ramon
Subject :NSO    Class : Class 1

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