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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:

Ankush Ghosh from DPS, Doha
Class : Class 10

Ans 2:

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

Ans 3:

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

Ans 4:

aritroray from Chirec International School, Hyderabad
Class : Class 8

Ans 5:

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

Ans 6:

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

Ans 7:

Akshara from NPS, Bengaluru
Class : Class 8

Ans 8:

Midhuna from ABCD, Banglore
Class : Class 3

Ans 9:

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

Ans 10:

Kupa sulakhi from Nes international, Thane
Class : Class 7

Ans 11:

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

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

Ans 1:

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

Ans 2:

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 3: (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.


Ans 4:

Alina Chattopadhyay from Tagore International School, Vasant Vihar, New Delhi, South Delhi
Class : Class 3
i got it wrong

Ans 5:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 7
ccccc

Ans 6:

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

Ans 7:

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

Ans 8:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 7
C

Ans 9:

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

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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:

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

Ans 3:

Shivesh Senthilkumar from vels vidyashram, chennai
Class : Class 6

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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Rhyin Mandal from Hem Sheela Model School, DURGAPUR
Subject :NSO    Class : Class 8

Ans 1:

Nikita Nair from DPS Noida, Ghaziabad
Class : Class 8

Ans 2:

Prabhnoor from Delhi Public School, Chandigarh
Class : Class 9
according to reactivity series K>Na>Ca>Mg>Al>Zn>Fe>Pb>H>Cu>Hg>Ag>Au>Pt the metal should be between Al and Cu and hence Fe is the answer

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RICHA BORAH from K V ANNA NAGAR, CHENNAI
Subject :NSO    Class : Class 6

Ans 1:

Rohan TR from Sri Aurobindo memorial school, Bangalore
Class : Class 6
C

Ans 2:

Anamkhan Mulla from Navrachna Sama, Vadodara
Class : Class 7

Ans 3:

Anamkhan Mulla from Navrachna Sama, Vadodara
Class : Class 7

Ans 4:

UMA Subramanian from Global Indian International School, Singapore
Class : Class 6

Ans 5:

Aarav Gupta from Mondrian House, DEHRADUN
Class : Class 7

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RICHA BORAH from K V ANNA NAGAR, CHENNAI
Subject :NSO    Class : Class 6

Read the given statements and select the correct option.
Statement 1 : After harvesting, the stems of the jute plants are tied into bundles and retted (soaked) in water for about 20 days.
Statement 2 : The process of retting softens the tissues and helps to separate the fibres.

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 but statement 2 is false.
D Both statements 1 and 2 are false.


The process of retting, rottens or softens the stem tissues of jute plant so it is easier to separate the fibres from the stem.

Ans 1:

Aadvik saini from Mvn sector 17, Faridabad
Class : Class 8
A

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

A

Jute is a fibre obtained from stem of jute plant. Jute is harvested during flowering stage. The stems are cut off close to the ground and are left to dry for sometime. Dried stems are then tied into bundles and soaked in water for about 20 days. This process is called retting. It softens the tissue and permits the fibres to be separated.

 


Ans 3:

Aadhira from velammal new gen school, Medavakkam, Chennai
Class : Class 6
The correct answer is (A).

Ans 4:

Satvik Pattanaik from GreenwoodHigh, bangalore
Class : Class 6

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Nandini Mahajan from Salwan Public School, Gurgaon
Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

B

The food-chain is starting with X. That means X is a plant (Producers). X is eaten by Y. So, Y must be a Herbivore (for example, animals like deer, rabbit, goat, etc.). And Y is eaten by Z. So, Z must be Carnivore (for example, animals like wolf, lion, hyena, etc.).


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