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Meghraj Padwal from ST THOMAS ENGLISH SCHOOL, KALYAN
Subject :NSO    Class : Class 8

Plant X is a vascular and invasive plant species that grows densely over the surface of a lake at a very high rate, due to pollution in water. It has been linked to oxygen depletion of the water, in spite of the fact that it is photosynthetic. Which of the following accounts for this contradiction?

AWhile being photosynthetic, X consumes oxygen at a faster rate than it releases the same, because of its high rate of growth.
BBecause X is highly invasive, it incorporates a large quantity of oxygen in its biomass.
CWhen X dies, the bacteria that decompose its dead body consume the oxygen dissolved in water and grow rapidly.
DNone of these


Ans 1:

Aditya from Sri Sankara School, Chennai
Class : Class 5

Ans 2: (Master Answer)

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

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Meghraj Padwal from ST THOMAS ENGLISH SCHOOL, KALYAN
Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

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

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Meghraj Padwal from ST THOMAS ENGLISH SCHOOL, KALYAN
Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

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

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Meghraj Padwal from ST THOMAS ENGLISH SCHOOL, KALYAN
Subject :NSO    Class : Class 8

Ans 1:

Chatresh ramasai gudi from Bgsnps , Bangalore
Class : Class 8
The frequency is 900 hertz and can be heard by a human ear.

Ans 2: (Master Answer)

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

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Meghraj Padwal from ST THOMAS ENGLISH SCHOOL, KALYAN
Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

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

Ans 2:

Sharvari Joshi from VIBGYOR High Balewadi, Pune
Class : Class 9
how is it ccan u pls explain

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Arunangshu Karmakar from Salt Lake School (English Medium), Kolkata
Subject :NSO    Class : Class 6

Ans 1:

DIBYAJYOTI ROUTRAY from Stewart school, Cuttack
Class : Class 6
c should be the correct answer

Ans 2:

karthik from , tirupur
Class : Class 8
C is the correct answer

Ans 3:

Aarush Goyal from D.A.V Pblic school, Sector 14, Faridabad
Class : Class 6
it should be c as sun is just over head

Ans 4:

karthik from , tirupur
Class : Class 8
How?

Ans 5:

ramesh datta from DPS dwarka , New Delhi
Class : Class 7
answer should be b because at noon there is at least some shadow

Ans 6:

ramesh datta from DPS dwarka , New Delhi
Class : Class 7
the answer could be c also as the shadow's length is increasing as time passes. but, it shows that at noon, there is no shadow. in b option there is at least some at noon, so it will be option b

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Arunangshu Karmakar from Salt Lake School (English Medium), Kolkata
Subject :NSO    Class : Class 6

Read the given statements and select the correct option.
Statement 1: Groundwater is safe for drinking.
Statement 2: Groundwater is free from soluble impurities.

ABoth statements 1 and 2 are correct and statement 2 is the correct explanation of statement 1.
BBoth statements 1 and 2 are correct but statement 2 is not the correct explanation of statement 1.
CStatement 1 is correct but statement 2 is incorrect.
DBoth statements 1 and 2 are incorrect.


SOF tells that the answer is A. But Statement 2 is incorrect as we get Iron, Magnesium and Calcium Sulphates and Oxides dissolved in ground water. I think C should be correct.

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arush tiwari from dps varanasi, Varanasi
Subject :NSO    Class : Class 6

Read the given statements and select the correct option.
Statement-1 : The brightness of the bulb A remains the same after the switch is closed.
Statement-2 : The voltage across elements in parallel is the same.


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.


I think answer is A

Ans 1:

Shweta Garg from apeejay school noida, Ghaziabad
Class : Class 3

Ans 2:

Ayush Yadav from Salwan Public School, Gurgaon
Class : Class 6

Ans 3:

Saurabh from Global Indian international school, Singapore
Class : Class 7
it should be a ,;[p..;[;[[

Ans 4:

Irresh Vijay from NPSI Singapore, Singapore
Class : Class 6
connection to Bulb A is incorrect.

Ans 5:

Vamsi Krishnan R from CMR NPS, Bangalore
Class : Class 6

Ans 6:

chittaranjan kar from MLZS, Jaipur
Class : Class 3
The given solution seems to be wrong. The answer may be A.

Ans 7:

Saurabh from Global Indian international school, Singapore
Class : Class 7

Ans 8:

Anurag Basistha from Prudence School Dwarka 16 B, Delhi
Class : Class 8
Please check the correctness.

Ans 9:

Praneeth from Null, Null
Class : Class 7
Please make the solution clear. It s quite difficult to understand such complicated language

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Dhruv from na, Udaipur
Subject :NSO    Class : Class 6

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A Andriya from Lalaji Memorial Omega International School, Chennai
Subject :NSO    Class : Class 4

Ans 1:

OISHIK KUNDU from Delhi Public school North kolkata, baranagar
Class : Class 4
Ans should be A not c, since the container can measure only one quantity like 5 ltrs , but option A can measure different amount of water.

Ans 2:

Arkoprava Dey from Techno India Group Public School, Coochbehar, Coochbehar
Class : Class 4
answer is A

Ans 3:

AARUSH from DPS, Mumbai
Class : Class 4
C

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