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Prajjit Gon from Basava International School, New Delhi
Subject :NSO    Class : Class 7

Besides the arrangement as shown in the given set-up, what other arrangements must be made to test for the presence of starch in the leaves X and Y ?


A The plant should be destarched first and then used for the experiment.
B The plant should be placed in continuous light for 2-3 days prior to experiment..
C On leaf Y, iodine solution should be put on while leaf X should be used as control without iodine application.
D None of these.


please provide an explanation of this answer

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ASHNA JAIN from inventure ACADEMY, Bengaluru
Subject :NSO    Class : Class 6

Ans 1:

Anmol kathar from deogiri global academy, aurangabad
Class : Class 9
the correct option is D and i have written D then also they had given me wrong and they had telling the answer B.

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kaithabjeetsingh@gmail.com from the shri ram school aravali, Gurgaon
Subject :NSO    Class : Class 7

Ans 1:

GAUTHAM GOPINATH from BPDAV School, HYDERABAD
Class : Class 8
I think that the answer is A.Could someone explain why it is B?

Ans 2:

tashu gupta from Shanti Asiatic , jaipur
Class : Class 7
WHY NOT A

Ans 3:

Amishee Surya from bgsnps, Bengaluru
Class : Class 8
Black radiates and absorbs heat faster. Confirmation is their in almost all science tb and google too. So answer must be A. WHY NOT A

Ans 4:

Prathamesh Raje from DPS Electronic City, Bangalore
Class : Class 8
I agree with you Anushree because the same thing is given in our science textbook also

Ans 5:

Ayush Anand Sharma from GEMS international school , Gurgaon
Class : Class 8
why not A

Ans 6:

Aditya Sai Vemparala from Amanora school, Pune
Class : Class 8
How

Ans 7:

AISHA from K.V.No.-1,A.F.S.,SEC.-14, GURUGRAM
Class : Class 7
B IS GIVEN HERE IN NSO TEST.

Ans 8: (Master Answer)

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

Ans 9:

Sradha Ratheesh from MGM central Public School, Trivandrum
Class : Class 8
It's A right?

Ans 10:

Prathamesh Raje from DPS Electronic City, Bangalore
Class : Class 8
Why

Ans 11:

Aditya Sai Vemparala from Amanora school, Pune
Class : Class 8

Ans 12:

from Sri Chaitanya Techno School, Bengaluru
Class : Class 9

Ans 13:

from Sri Chaitanya Techno School, Bengaluru
Class : Class 9

Ans 14:

Supratim Biswas from DPS RUBY PARK KOLKATA, kolkata
Class : Class 4

Ans 15:

Amishee Surya from bgsnps, Bengaluru
Class : Class 8
how is the answerB. according to my science text book ( New science ahead class 7, pg.47), Black not only absorbs heat fast,but also radiates heat fast and cools down faster, accordingto that,answermust be A.

Ans 16:

aritroray from Chirec International School, Hyderabad
Class : Class 8
It should be A

Ans 17:

Prathamesh Raje from DPS Electronic City, Bangalore
Class : Class 8

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SAUGATA SAHA from ,
Subject :NSO    Class : Class 3

Ans 1:

from ,
Class :
The pencil looks bent because of the phenomenon called Refraction. When light enters water it cannot move as fast as it does in the air. As the light enters the water on an angle it does not follow its original path, and this makes the image look bend.

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kaithabjeetsingh@gmail.com from the shri ram school aravali, Gurgaon
Subject :NSO    Class : Class 7

Ans 1:

Taksh from St John High School, Mumbai
Class : Class 8
Ans a

Ans 2:

thechampiondaksh from K R Mangalam World School, New Delhi
Class : Class 8
the answer is c according to me as convex mirror always forms diminished , erect and virtual image

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TEJAS SHENDE from kendriya Vidyalaya IIT Mumbai, Mumbai
Subject :NSO    Class : Class 7

Ans 1:

parijatsomani from The Global Edge School, Hyderabad
Class : Class 7
they are asking what is incorrect

Ans 2:

Aditya kumar from Sapphire International School, Noida
Class : Class 8
as u are correct that pumule form the shoot of plant but in some cases it is future root like in some plants radicle decay due to some disease so pumule grows as root . So here right option will be "c"

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Chandan NS from DPS NORTH, Bengaluru
Subject :NSO    Class : Class 3

Ans 1:

Praveen Tiwari from St Joseph high school, Maharajganj
Class : Class 9
Maharajganj

Ans 2:

from ,
Class :
Answer is option C. Both Radio and Television can be used to get updates because they support audio.

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Chandan NS from DPS NORTH, Bengaluru
Subject :NSO    Class : Class 3

Ans 1:

from ,
Class :
Tailor bird. It makes its nest with the leaves sewn to gether.

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Apurv Yadnopavit from Hutchings high school talegaon pune, Pune
Subject :NSO    Class : Class 8

Read the given statements and select the correct option.
Statement 1 : To maintain soil fertility, it is essential to prevent overgrazing and deforestation.
Statement 2 : Roots of plants grasp soil well and prevent removal of top soil by air, water, etc.

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.


Please see to it that you may have typed the word "fertility" instead on the word "erosion". Soil grasping has nothing to do with soil fertility.

Ans 1:

Shriram dindore from KVS 9BRD AFS PUNE, PUNE
Class : Class 8

Ans 2:

Shriram dindore from KVS 9BRD AFS PUNE, PUNE
Class : Class 8

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gourinandana from delhi public school gbn, Noida
Subject :NSO    Class : Class 8

Ans 1:

Dr Anupa Ghosh from ,
Class : Class 8
The correct answer is crop rotation(C).

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