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Ritabrata Das from OPJS, Angul
Subject :NSO    Class : Class 5

Ans 1:

Samarth Sabari from GIIS, Singapore
Class : Class 6
Which of the following is/are not the function(s) of the part labelled as X in the given figure ? A is answer

Ans 2:

munish jindal from APJ school, Jalandhar
Class : Class 5

Ans 3:

from kalyan, Kalyan
Class : Class 6
They are pointing to the stem and the answer is about roots🧐🤔

Ans 4:

Shabd from Hdfc, Gurgoan
Class : Class 6
It's A as it is asking the functions not done by the stem

Ans 5:

ADRIJA SAHA from DPS RANIPUR, Haridwar
Class : Class 6
The answer is D as X is labeled as stem but the answer is given for root.

Ans 6:

Soumya Sahoo from Pragathi central school, Hyderabad
Class : Class 6
D

Ans 7:

Ankita Dave from GNS, Bangalore
Class : Class 4
X is stem but the function is about the root. Hence correct option is D

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Lokesh Sai Dasari from Rockwell International School, Hyderabad
Subject :NSO    Class : Class 5

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Ayushree Barman from Sri Sri Academy, Kolkata
Subject :NSO    Class : Class 5

Which of the following damages are associated with acid rain?
(i) Erosion of stone statues and buildings
(ii) Melting of ice caps
(iii) Increase in the number of mosquitoes
(iv) Threat to the life of aquatic beings
(v) Loss of soil fertility.

A(i), (ii) and (iii) only
B(i), (iv) and (v) only
C(i) and (iii) only
D(ii), (iii) and (v) only


In the solution, it says that the melting of ice caps is an incorrect option, but why? Acid rain is nothing but industrial chemicals that react with water vapour in the air and precipitate in form of hail, snow or rain and is acidic to nature. So in the poles, this acid can fall as snow, so they can melt the ice sheets, right? Please explain this question.

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Ankit Hazarika from IVWS, Kolkata
Subject :NSO    Class : Class 6

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arnav from the gurukul, Panchkula
Subject :NSO    Class : Class 8

Different zones of a candle flame are marked by the letters P, Q, R and S.

Which of the following statements are correct?
(i) P is the luminous zone and is the hottest part of candle flame.
(ii) In zone Q, there is inadequate supply of oxygen.
(iii) Zone R contains unburnt wax vapours produced by melting of wax.
(iv) In S zone, carbon monoxide burns with a blue flame.

A (i) and (ii) only
B (ii), (iii) and (iv) only
C (ii) and (iv) only
D (i), (ii) and (iii) only


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arnav from the gurukul, Panchkula
Subject :NSO    Class : Class 8

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arnav from the gurukul, Panchkula
Subject :NSO    Class : Class 8

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arnav from the gurukul, Panchkula
Subject :NSO    Class : Class 8

Ans 1:

Saranyaa Adak from Delhi Public School, Durgapur
Class : Class 10
Child's play though. calorific value=heat/unit mass of the fuel burnt =180,000/4.5 =40000 kJ/kg it is a question from our very own NCERT TEXTBOOK.

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arnav from the gurukul, Panchkula
Subject :NSO    Class : Class 8

Ans 1:

PARTH JAIN from DPS INDIRAPURAM, GHAZIABAD
Class : Class 8

Ans 2:

Saranyaa Adak from Delhi Public School, Durgapur
Class : Class 10
Sulfur dioxide and chlorine are not produced because CNG is composed of methane. The fact that it produces large amount of carbon dioxide is not helpful or advantageous by any means. Whether it is used in compressed form or not does not make it eco-friendly; but, yes, it produces no smoke SPM upon combustion. So correct answer is (B).

Ans 3:

ARNAB MANDAL from NAVY CHILDREN SCHOOL, VIZAG
Class : Class 9
totally wrong

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Kriday from KDAV, Jamnagar
Subject :NSO    Class : Class 8

Which of the following are possible advantages of using bacteria in sewage treatment?
(i) Bacteria multiply quickly, thus producing a cheap and abundant source of enzymes.
(ii) Only one type of bacteria is required to provide the various enzymes necessary for different kinds of wastes.
(iii) Bacteria can break down waste under anaerobic or aerobic condition.

A (i) only
B (i) and (iii) only
C (ii) and (iii) only
D (i), (ii) and (iii)


is only one kind of bacteria required to provide the various enzymes necessary for different kinds of wastes?because it was given so in the summary but in the solution it is showing this statement as false

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