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Amol Athawale from WoodRidge High, aurangabad
Subject :NSO    Class : Class 8

Few Natural resources are classified as:

P. Exhaustible
Q. Inexhaustible

Some natural resources are
(i) Petrol, diesel
(ii) Coal, petroleum
(iii) Air, water
(iv) Cow dung cakes, sunlight
(v) Forests, minerals

Which of the following represents the correct match?

A P-(iii), (iv); Q-(i), (ii), (v)
B P-(i), (ii), (v); Q-(iii), (iv)
C P-(ii), (v), Q-(i), (iii), (iv)
D None of these is a correct match.


how is cow dung cake a inexaustible resource ?

Ans 1:

Hprakash09 from Billabong high Bhopal, Bhopal
Class : Class 7
Forests and Minerals are DEFINETELY exhaustible resources, but Cow Dung Cakes are also exhaustable.

Ans 2:

Amol Athawale from WoodRidge High, aurangabad
Class : Class 8
how is cow dung cake an inexaustible resource?

Ans 3:

Amol Athawale from WoodRidge High, aurangabad
Class : Class 8

Ans 4:

Antarik Maity from Bharatiya Vidyabhaban, Kolkata
Class : Class 8
How can cow dung cakes and forests and minerals be an exhaustible resource as cow dung cakes are available in abundance and it will be available till all the cows on the earth die and sane goes for the forests. Minerals are also available in abundance and they are definitely inexhaustible.

Ans 5:

Garv T from Lilavatibai Podar, Mumbai
Class : Class 9
are forests and minerals really exhaustible resources?

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Vihaan kohli from MVN Aravali, Faridabad
Subject :NSO    Class : Class 3

Five children made the following statements about birds.
Ashok : All birds can fly.
Beena : All birds have a beak.
Ashu : All birds have a backbone.
Shuchi : All birds have an outer covering of feathers.
Siddhi : Most birds lay eggs, while some give birth to their young ones.
Whose statements about birds are true?

AAshok, Beena and Ashu only
BBeena, Ashu and Shuchi only
CAshok, Beena, Shuchi and Siddhi only
DBeena, Ashu, Shuchi and Ashok only


it was very hard

Ans 1:

Achyut Rai from THE KHAITAN SCHOOL, NOIDA
Class : Class 4
B

Ans 2:

Advita Ghelani from Rustomjee Cambridge, Mumbai
Class : Class 3
Beena, Ashu and Shuchi because Kiwi, Ostrich, Emu cannnot fly Penguins have a thin coat of feathers All birds lay eggs THEY ALL HAVE BEAKS AND A BACKBONE

Ans 3:

SPRIHA SINGH from KV BEML Nagar, KGF
Class : Class 4
The correct answer is B.

Ans 4:

Ava from trio, bangalore
Class : Class 2
B

Ans 5:

ANKITA KAKKAR from DPSN, Delhi
Class : Class 3
B

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Syed Mohammad Hussain from ISAM, Muscat
Subject :NSO    Class : Class 5

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

C

When a bomb explodes, chemical energy stored in the chemicals that form the bomb converts into heat, sound and light energy.


Ans 2:

Shreejith from EuroSchool , Bangalore
Class : Class 7
CWhen a bomb explodes,chemical energy stored in the chemicals that form the bomb converts into heat, sound and light energy.

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Amol Athawale from WoodRidge High, aurangabad
Subject :NSO    Class : Class 8

Read the given statements and select the correct option.
Statement 1 : Silver objects become green and lose their shine with the passage of time.
Statement 2 : Silver reacts with carbon dioxide and moisture present in the atmosphere.

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


Ans 1:

Daksha Swaminathan from Horiozon Scholars and Neo Kids, Mumbai
Class : Class 7

Ans 2:

Ankit kumar Jha from Ryan International School , Ghaziabad
Class : Class 9
ans D is the correct answer as silver turns black after reaction to hydrogen sulphide

Ans 3:

Student from School, City
Class : Class 8
Silver can also react with SO2, sulphur dioxide, to tarnish.

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aadityaarmaan from KVS Chabua, Dibrugarh
Subject :NSO    Class : Class 7

Ans 1:

Gauri Singh from St Johns School Marhauli, Varanasi
Class : Class 8
20 mL multiplied by 10 equals 200 ml.. likewise, multiply 1 min by 10. the answer is 10 minutes or 600 seconds.

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

Sheetal has taken an empty bottle and fixed a deflated balloon on its mouth. She placed the bottle in a container filled with hot water. After some time, the balloon gets inflated as shown. What could be the most appropriate reason for this?


A Air when gets heated becomes heavier and rises up.
B Air when gets heated becomes lighter and settles down.
C Air when gets heated becomes heavier and settles down.
D Air when gets heated becomes lighter and rises up.


Ans 1:

Ivan Tyagi from Chirec, Hyderabad
Class : Class 4
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA

Ans 2:

akshitha from Euroschool, Bengaluru
Class : Class 3
d is the answer

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Vedant Sharma from JPHS, Jaipur
Subject :NSO    Class : Class 5

Ans 1:

Dhairya from GREEN FIELDS SCHOOL, DELHI
Class : Class 5
a b c d

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ADITYA KISHOR from dps, gaya
Subject :NSO    Class : Class 9

A particle moves on a circular path of radius 7 m with uniform speed of 11 m/s. If it reaches point T from point S, a diametrically opposite point, then during this interval

(i) The average acceleration is zero.
(ii) The average velocity is zero.
(iii) The average acceleration is 11 m/s2.
(iv) The average velocity is 7 m/s.
Which of the following options is correct?

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


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ADITYA KISHOR from dps, gaya
Subject :NSO    Class : Class 9

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ADITYA KISHOR from dps, gaya
Subject :NSO    Class : Class 9

A cricket ball of mass 150 g moving with a speed of 126 km/h hits at the middle of the bat, held firmly at its position by the batsman. The ball moves straight back to the bowler after hitting the bat. Assume that the ball rebounds with same speed and they remain in contact for 0.001 s, the force that the batsman had to apply to hold the bat firmly at its place would be

A10.5 × 10-4 N
B2.1 × 103 N
C1.05 × 104 N
D2.1 × 104 N


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