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Lakshay Sharma from Maxfort School Dwarka, New Delhi
Subject :NSO    Class : Class 7

Which of the following statements are correct?
(i) Some animals help us in keeping our environment clean. They consume dead animals and dispose them off. They are called scavengers.
(ii) Quinine, a forest product obtained from the bark of Cinchona tree, is widely used to treat typhoid.
(iii) Van Mahotsava is a festival of cutting down trees.
(iv) World Forest Day is celebrated on 21st March every year.

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


Water day is not celebrated in 21 of march

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Aaratrik Chakraborty from Delhi Public School, Bhilai, Bhulai
Subject :NSO    Class : Class 6

Ans 1:

Khushal from Oxford English Medium School, Chopda, Chopda
Class : Class 7
thanks for reporting our mistakes

Ans 2:

Islaah Shakil from Genius National School , Kolkata
Class : Class 7

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john from KV PORT TRUST , Ernakulam
Subject :NSO    Class : Class 10

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Surat Kumar from REI , Dayal Bagh agra
Subject :NSO    Class : Class 10

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tanay from nps, bengaluru
Subject :NSO    Class : Class 6

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apra from dps, Noida
Subject :NSO    Class : Class 8

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

Column I Column II
(A) A girl pulling the leash of a running dog (i) Impact force can make stationary object to move by an another moving object
(B) A driver turning the steering wheel of a car (ii) Gravity acts upon an object
(C) When you hit a nail with a hammer (iii) Force can make an object go slower
(D) A ball released from top of a tower (iv) Force can change the direction of a moving object


A (A)-(i), (B)-(ii), (C)-(iii), (D)-(iv)
B (A)-(iii), (B)-(iv), (C)-(i), (D)-(ii)
C (A)-(ii), (B)-(i), (C)-(iv), (D)-(iii)
D (A)-(iv), (B)-(iii), (C)-(ii), (D)-(i)


testing

Ans 1:

arnav raj sharma from gulibulium school, new york
Class : Class 8
the first ones area is a and the second's one is 16a so the pressure will be 16p

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Punya Paras Sundrani from Anand Niketan , Ahmedabad
Subject :NSO    Class : Class 6

Ms Naina, a science teacher divided the class into four groups and each group was given different mixtures :
Group I : Sand and iron filings
Group II : Oil and water
Group III : Salt and sand
Group IV : Wheat and husk
Which of the following methods should each group use to separate the components of mixtures given to them?

Group I Group II Group III Group IV
A Magnetic
separation		 Seprating
funnel		 Filtration
followed by
evaporation		 Winnowing
B Sieving Filtration Winnowing Sieving
C Winnowing Decantation Sieving Filtration
D Magnetic
separation		 Filtration Sieving Winnowing


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rethish from Veltech, Avadi
Subject :NSO    Class : Class 7

Read the given paragraph.
X, Y and Z are three methods of waste management. X requires action of biological agents whereas Y and Z are chemical processes. Both X and Y reduce the waste volume whereas Z makes the waste reusable.
Which of the following is incorrect regarding X, Y and Z?

AX enriches the soil with nutrients and helps in recycling of matter between living organisms and their environment.
BY generates gases and heat energy and is best suited for disposing toxic waste.
CZ increases the demand and supply of fresh raw material and causes air and water pollution.
DSaprophytes and detritivores play a major role in X.


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Aarav Kalia from Apeejay School, Pitampura, Delhi
Subject :NSO    Class : Class 9

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Amlan choudhury from GD Birla center for education , Kolkata
Subject :NSO    Class : Class 7

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