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ASHMI Narkar from Vibgyor High Airoli, Navi Mumbai
Subject :NSO    Class : Class 4

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Saarth Agrawal from Podar International School , Mumbai
Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

B

Length of the day depends on the speed of rotation of a planet on its axis. The more is the speed the shorter is the length of the day.


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from St Gregorios High school , Mumbai
Subject :NSO    Class : Class 4

A factory was set up in an area which used to discharge its untreated waste down the pipe into nearby water body. After few years the factory was shut down due to some legal action. The given graph shows the changes in the populations of two organisms X and Y over time, before the setting of factory and after it was shut down. Identify X and Y and select the correct option.


A X could be bacteria and Y could be fish.
B X could be prawn and Y and could be a submerged aquatic plant.
C X could be a water bird and Y could be algae.
D X could be algae and Y could be bacteria.


Ans 1:

Kanishka malik from Uttam school for girls, Ghaziabad
Class : Class 4
Please explain

Ans 2:

SAPTARSHI SAHA from ST PAULS SCHOOL, RAMPURHAT
Class : Class 4

Ans 3:

Shreshta from Presidium, Ghaziabad
Class : Class 3
A

Ans 4:

Hamzah Inamdar from SHARDA ENGLISH SCHOOL KAIJ DIST BEED, KAIJ
Class : Class 4

Ans 5: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

A


Ans 6:

Shreshta from Presidium, Ghaziabad
Class : Class 3
A

Ans 7:

xyz from cambridge, Jalandhar
Class : Class 7
The correct answer is A

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

Read the given passage and fill in the blanks by choosing an appropriate option.
Iron nails when new are grey and bright. When exposed to (i), they get covered with a (ii) coating. This process is called (iii) and it is a (iv) change.

(i) (ii) (iii) (iv)
A Moist air Grey Corrosion Chemical, reversible
B Air and water Reddish brown Rusting Chemical, irreversible
C Oxygen in air Green Rancidity Physical, irreversible
D Nitrogen in air Reddish brown Galvani-sation Chemical, irreversible


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Arsh Gupta from Cambridge International School, Jalandhar
Subject :NSO    Class : Class 6

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

D

Wooden ruler is opaque, and it has a definite shape. So, it can be W.

Dough is opaque, and it doesn’t have a definite shape. So, it can be X.

Tracing paper is translucent and has a definite shape. So, it can be Y.

Haze  has no definite shape, and it is translucent. So, it can be Z. Hence, the correct option is D.


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Aman Singh from krishna public school, Bhilai
Subject :NSO    Class : Class 8

Ans 1:

Ankit kumar Jha from Ryan International School, Ghaziabad
Class : Class 9
D should be the answer. because gravity pulls them

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SWARIT JAIN from TSMS NOIDA, GREATER NOIDA
Subject :NSO    Class : Class 4

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Prithvi Bhardwaj from NiBs, Dwarka
Subject :NSO    Class : Class 7

Ans 1:

ASHISH K DIXIT from JASPAL KAUR PUBLIC SCHOOL, NEW DELHI
Class : Class 7
d

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Bharat from Geetanjali Olympiad school, Bangalore
Subject :NSO    Class : Class 6

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

C


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saisavit from sri kumaran ps, bangalore
Subject :NSO    Class : Class 3

Ans 1:

shreya from Airforce school , Bengaluru
Class : Class 3

Ans 2:

saisavit from sri kumaran ps, bangalore
Class : Class 3

Ans 3: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

A

Preeti is having difficulty in breathing, laughing and yawning, it seems she has injured an organ, which is related to inhalation and exhalation of air. That means her Lungs are injured, and that is why she is also feeling pain in her chest.


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