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Radhika Gupta from Dps civil lines aligarh , Aligarh
Subject :NSO    Class : Class 4

A scientist observed a sudden increase in the number of algae in a lake over a few days. The reason behind it could be that ____________.

AWater cycle in the area got unbalanced
BElectronic wastes were being dumped in a nearby area
CA factory with heavy smoke discharge has been established nearby
DHeavy amount of chemical fertilisers were being used in a nearby field


Option d As heavy amount of chemicals fertilizers were being used in a nearby fiel

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

D


Ans 2:

KANAK PRASAD from Kendriya Vidhyalaya IIT Tirupati, Tirupati
Class : Class 5

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AKSHAJ SRIVASTAVA from MOUNT LITERA ZEE SCHOOL, Kanpur
Subject :NSO    Class : Class 8

Ans 1:

abishek from Chennai Public School, Chennai
Class : Class 8
Minimum pressure means maximum area as pressure is inversely proportional to area so, 1 cm = 1/100 m so the Largest area is 40cm*30cm = 4/10* 3/10 = 12/100 P =F/Area P = Mass*acceleration/area P = 60*10/(12/100) P = 600 * 100/12 P = 60000/12 = 5000 so answer is C

Ans 2:

Ankit kumar Jha from Ryan International School , Ghaziabad
Class : Class 9
C is the answer

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Vaibhav Elisetti from sri chaitanya techno school Nallagandla, Hyderabad
Subject :NSO    Class : Class 5

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Aditya Ananda Bharali from Chirec International School,Kondapur , Hyderabad
Subject :NSO    Class : Class 2

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Gauri Singh from St Johns School Marhauli, Varanasi
Subject :NSO    Class : Class 7

Refer to the given Venn diagram and select the correct statements regarding animals X, Y and Z.

(i) Y can close its nostrils and remain underwater for long duration.
(ii) X possess glands under the eyes that help the body to get rid of excess salt.
(iii) Blubber is present under the skin of X and Z which protects them from cold.
(iv) X and Y are adapted to live in extremely cold climate of polar regions.
(v) Y live in groups and huddle together to keep themselves warm.
(vi) Z camouflage with the surrounding to avoid predators.

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


Ans 1:

Himanish Basu from Army Public School Kamaraj Road, Bangalore
Class : Class 7

Ans 2:

Akshara from NPS, Bengaluru
Class : Class 8

Ans 3:

Arhan Shri Gupta from Mayoor Private School, Abu dhabi
Class : Class 7

Ans 4:

I Riona Angel from Pincushion Montessori International School, Vellore
Class : Class 7

Ans 5:

Ankush Ghosh from DPS, Doha
Class : Class 10

Ans 6:

Prathamesh Raje from DPS Electronic City, Bangalore
Class : Class 9

Ans 7:

Vartika Agarwal from Phoenix world school, Pune
Class : Class 9

Ans 8:

Midhuna from ABCD, Banglore
Class : Class 3

Ans 9:

from Podar International School,Dhule, Dhule
Class : Class 8

Ans 10:

Kupa sulakhi from Nes international, Thane
Class : Class 7

Ans 11:

aritroray from Chirec International School, Hyderabad
Class : Class 8

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Dhruv Sachdev from Bhavan Vidyalaya, chandigarh
Subject :NSO    Class : Class 3

Ans 1:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
C

Ans 2:

Alina Chattopadhyay from Tagore International School, Vasant Vihar, New Delhi, South Delhi
Class : Class 5
i got it wrong

Ans 3:

YAJAT KUMAR from RPS PUBLIC SCHOOL , Narnaul
Class : Class 3
I have given wrong answer

Ans 4:

Yatindra G from SBOA, Chennai
Class : Class 4
HOW??I don't understand!!!!!!!!

Ans 5:

Rishik De Sarkar from Delhi Public School Gurgaon, Gurgaon
Class : Class 7
c

Ans 6:

Aadyah Dixit from Greenwood High International School, Bangalore
Class : Class 4
R can be any mammal and S can be insects, as mammals have 4-2 legs answer C is wrong and answer B is correct. But my computor is showing that C is correct. HOW!?!!?

Ans 7:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
ccccc

Ans 8:

Meghatyoya from Adamas World School , Barasat
Class : Class 3
option c is the correct option because R is a bird

Ans 9: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

C

S could be insects, so they can possess six legs. R can be birds, they possess only two legs. So, this statement is incorrect.


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Tanmay Mehta from Nirmala Convent high school, Renukoot
Subject :NSO    Class : Class 9

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KARTHI BALAJI from SBOA SCHOOL AND JUNIOR COLLEGE, CHENNAI
Subject :NSO    Class : Class 8

Ans 1:

Ram K from Sanskriti, Hyderabad
Class : Class 2

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Dushyant Singh from Shri Ram Centennial School, Indore
Subject :NSO    Class : Class 5

Ans 1:

Gaithri shree Madhan from Dawn School, Chennai
Class : Class 6

Ans 2:

Shivesh Senthilkumar from vels vidyashram, chennai
Class : Class 6

Ans 3:

UMANG from SPRING DALE COLLAGE, Lucknow
Class : Class 8
ANS IS 154

Ans 4:

Shivesh Senthilkumar from vels vidyashram, chennai
Class : Class 6

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Harsh Gupta from AECS Narora, Narora
Subject :NSO    Class : Class 9

Different substances are classified as :
I. Pure substance
II. Homogeneous mixture
III. Heterogeneous mixture
A few common substances are listed below.
(i) Air, (ii) Graphite, (iii) Gasoline, (iv) Diamond, (v) Tap water, (vi) Iron, (vii) Sodium chloride, (viii) Iodised salt, (ix) Brass, (x) Oil and water

Which of the following represents the correct classification of the given substances?
A I - (ii), (vi), (ix); II - (i), (v), (vii); III - (iii), (iv), (viii), (x)
B I - (ii), (iv), (vi), (vii); II - (i), (iii), (v), (viii), (ix); III - (x)
C I - (i), (iv), (vii), (ix); II - (ii), (v), (viii); III - (iii), (vi), (x)
D None of these represents the correct match.


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