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AKSHITA.KRISHNAN from DPS Noida, Noida
Subject :NSO    Class : Class 3

Gases represented by 1 and 2 in the given picture arerespectively



AOxygen, Carbon dioxide
BOxygen, Nitrogen
CNitrogen, Carbon dioxide
DCarbon dioxide, Oxygen


Ans 1:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
ans is A as the order of gases will not change

Ans 2:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
Sorry ,answer is A .I gave wrong explanation why .You have told arerespectively, so gas 1 is carbon dioxide and gas 2 is oxygen.You have given the order as 1 and 2 i.e. carbon dioxide and oxygen.So ,we will say it as 2 and 1 i.e oxygen and carbon dioxide .Hence answer is A.

Ans 3:

SAMRIDDHA PANDA from ST. MONFORT'S SENIOR SECONDARY SCHOOL, BARUIPUR
Class : Class 7

Ans 4:

from M G M Senior Secondary school Sec-6,
Class : Class 5
A

Ans 5:

Abhijay Saha from Delhi Public School, Megacity, Kolkata
Class : Class 3
We Don't know that plants breath oxygen in night

Ans 6:

Soham from Golden Earth Global School, Sangrur, Sangrur
Class : Class 3
A

Ans 7:

SARTHAK.SHUKLA from Delhi Public School, Noida, Noida
Class : Class 3
Answer is D because at night plants take in oxygen and give out carbon-di-oxide whereas we humans always take in oxygen and give out carbon-di-oxide.

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