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Dhruv Sachdev from Bhavan Vidyalaya, chandigarh

Subject :NSO Class : Class 3

Study the given Venn diagram.
Identify P-S and select the INCORRECT statement.

AQ could possess hair whereas R could possess feathers.
BP could possess beaks whereas S could possess spiracles.
CBoth R and S may possess six legs.
DBoth P and R could possess feathers.

in C insects breathe through spiracles.

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Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

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 2:

Poorani from ,

Class : Class 4

pls explain the answer

Ans 3:

Alina Chattopadhyay from Tagore International School, Vasant Vihar, New Delhi, South Delhi

Class : Class 6

i got it wrong

Ans 4:

Meghatyoya from Adamas World School , Barasat

Class : Class 3

option c is the correct option because R is a bird

Ans 5:

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 6:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore

Class : Class 8

ccccc

Ans 7:

Krisha malik from Sacred heart convent school, Ludhiana

Class : Class 3

Thanks for telling

Ans 8:

YAJAT KUMAR from RPS PUBLIC SCHOOL , Narnaul

Class : Class 3

I have given wrong answer

Ans 9:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore

Class : Class 8

Ans 10:

Rishik De Sarkar from Delhi Public School Gurgaon, Gurgaon

Class : Class 7

Ans 11:

Yatindra G from SBOA, Chennai

Class : Class 4

HOW??I don't understand!!!!!!!!

Ans 12:

Mohit Gupta from Sat Paul mittal school, Ludhiana

Class : Class 3

B should be answer

Ans 13:

Lyra Roy from The Samhita Academy, Bangalore

Class : Class 4

C is the answer.

Ans 14:

Abir Jha from CNS, Mumbai

Class : Class 4

C cannot be the answer as R can't be insects as insects breathe through spiracles and not lungs.

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Tanmay Mehta from Nirmala Convent high school, Renukoot

Subject :NSO Class : Class 9

Observe the given flow chart and answer the following questions. What are c and d?

A c = multiply by N_A, d = divide by N_A
B c = multiply by N_A, d = multiply by N_A
C c = divide by N_A, d = multiply by N_A
D c = divide by N_A, d = divide by N_A

good question

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KARTHI BALAJI from SBOA SCHOOL AND JUNIOR COLLEGE, CHENNAI

Subject :NSO Class : Class 8

The graph given below shows how the temperature of water changes with time.
Hot water was added at certain points during the experiment.

At which points in the graph was hot water added?

Aa and c only
Bb and d only
Ca, c and e only
Db, d and f only

v.useful

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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

What is the sum of the 4 numbers in SQUARE 10?

A 160
B 154
C 138
D 182

Very easy.

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Ans 1:

Shivesh Senthilkumar from vels vidyashram, 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:

Gaithri shree Madhan from Dawn School, 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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Ans 1:

Tanmay Mehta from Nirmala Convent high school, Renukoot

Class : Class 9

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Rhyin Mandal from Hem Sheela Model School, DURGAPUR

Subject :NSO Class : Class 8

An unknown metal X when placed in copper sulphate solution, red brown pieces of copper fall to the bottom of the test tube. When metal X is placed in aluminium sulphate solution, no change is observed. Metal X can be

A Sodium
B Potassium
C Iron
D Calcium.

it will be calcium as ,iron is below aluminium in the reactivity series and the metal 'X' is more reactive than Al. as K

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Ans 1:

Nikita Nair from DPS Noida, Ghaziabad

Class : Class 9

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

Match the column I with column II and select the correct option from the codes given below :

A P - (ii), Q - (iv), R - (iii), S - (i)
B P - (i), Q - (iii), R - (ii), S - (iv)
C P - (iii), Q - (iv), R - (i), S - (ii)
D P - (iii), Q - (iv), R - (ii), S - (i)

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Ans 1:

UMA Subramanian from Global Indian International School, Singapore

Class : Class 7

Ans 2:

ADVAY BANSAL from LOTUS VALLEY INTERNATIONAL SCHOOL GURUGRAM, GURUGRAM

Class : Class 6

Ans 3:

Rohan TR from Sri Aurobindo memorial school, Bangalore

Class : Class 6

Ans 4:

Anamkhan Mulla from Navrachna Sama, Vadodara

Class : Class 7

Ans 5:

Anamkhan Mulla from Navrachna Sama, Vadodara

Class : Class 7

Ans 6:

Vatsal Gupta from Mondrian House, DEHRADUN

Class : Class 6

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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.

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Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

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 2:

Aadvik saini from Mvn sector 17, Faridabad

Class : Class 8

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

Study the given food chain.
X → Y → Z
Select the option that identifies herbivore.

AX
BY
CZ
DBoth X and Y

How is this possible?

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Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

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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Ankit kumar Jha from Ryan International School , Ghaziabad

Subject :NSO Class : Class 8

Read the given paragraph and answer the following questions.
Two metal rulers of lengths 30 cm and 60 cm are kept in such a manner that a 30 cm ruler extends about 15 cm over the edge and a 60 cm ruler extends about 30 cm over the edge. Both the ends are flicked. Read the given statements and select the correct option.
Statement 1 : The note heard in the vibration of 30 cm ruler is louder when flicked with larger amplitude.
Statement 2 : Loudness of a sound depends on the amplitude of vibrations.

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 Statement 1 is false but statement 2 is true.

DOES NOT ANYONE THINK THAT THE ANSWER SHOULD BE D?????

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