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Vihan S from NPSI, Singapore
Subject :NSO    Class : Class 5

Read the given statements and select the correct option.
Statement 1 : Physical change does not affect the composition of matter.
Statement 2 : Chemical change results in the formation of new substance with different properties.

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.


How

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rahul from euroschool, Mumbai
Subject :NSO    Class : Class 7

A scientist took a metal rod and a wooden rod and wrapped each of them in a piece of paper. These were then heated as shown. It was found that the paper around the metal rod does not burn whereas the one around the wooden rod catches fire. It is because


AMetal being a good conductor, conducts away the heat given to the paper
BWood being an insulator, takes away all the heat
CCandle in case of iron rod, is near to the paper
DNone of these.


the explanation is not given

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Raghav Srinivasan from new horizon, bangalore
Subject :NSO    Class : Class 3

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Y from Rainbow , Jaipur
Subject :NSO    Class : Class 9

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Subhang Deep Sahu from Chrysalis High Kadugodi . , Bangalore
Subject :NSO    Class : Class 6

Refer to the given graph plotted for three different fabric pieces of equal size P, Q and R on the basis of their water absorbing capacity and select the correct statement.


AP is made up of fibres obtained from Gossypium plant whereas R is made up of fibres obtained from an insect.
BQ is made up of protein fibres obtained from an insect whereas R is made up of cellulose fibres obtained from flower of a plant.
CR is made up of fibres obtained from plant stem by the process of retting whereas P is made up of fibres obtained from plant seed by the process of ginning.
DP is biodegradable whereas Q and R are non-biodegradable.


Ans 1:

Satwik Dixit from Vibgyor High, Bangalore
Class : Class 6
According to the given graph the water absorption capacity of Q is maximum, P is moderate and R is minimum. Fibres obtained from Gossypium plant have moderate water absorbing capacity whereas fibres obtained from the insect silkworm will have very less water absorbing capacity.

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Nilanjana from Kv, Mumbai
Subject :NSO    Class : Class 9

Which of the following statements is/are true for the mass of the substance deposited at the cathode?
(i) It is inversely proportional to quantity of electricity passed through electrolyte.
(ii) It is directly proportional to quantity of electricity passed through electrolyte.
(iii) It is directly proportional to the time for which electricity is passed through the electrolyte.
(iv) It is inversely proportional to the time for which electricity is passed through the electrolyte.

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

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Harsh baburao walke from Holy spirit convent school , Pune
Subject :NSO    Class : Class 3

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Kalp Jain from St Paul Sr Sec school, Mala Road, kota
Subject :NSO    Class : Class 4

Ans 1:

Shrihan Koley from Radiant International School , Patna
Class : Class 4

Ans 2:

Priyanka Dahiya from ,
Class : Class 4
it is waxing gibbous. please clarify and rectify in answer key

Ans 3:

Aindri Biswas from South point school , Kolkata
Class : Class 4
The image is not correct,the moon mustRotate anticlockwise,but the image is showing clockwise movement.plz correct the solution

Ans 4:

Swara Penubothu from Chirec International , Hyderabad
Class : Class 4
the answer is Waxing Gibbous. It is incorrectly answered as Waning Gibbous. Please correct the solution key.

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Vivaan tiwari from Vasant valley , New Delhi
Subject :NSO    Class : Class 7

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Kalp Jain from St Paul Sr Sec school, Mala Road, kota
Subject :NSO    Class : Class 4

Ans 1:

ANKIT from devin-national school, bangalore
Class : Class 5
A IS THE CORRECT ANSWER AS IT IS A SHIP( WATER TRANSPORT ) AND IS ODD AS TRUCK,AUTO,BUS ARE LAND TRANSPORT. A IS NOT A TRAIN IT IS A SHIP.A SHIP. A SHIP. A SHIP!!

Ans 2:

Satvik Mishra from CP Goenka Intnternational school, Dombivali
Class : Class 4
yep it should be A

Ans 3:

Shrihan Koley from Radiant International School , Patna
Class : Class 4
The question ask that mode of transport not type of transport the correct answer is AAAAAAAAAAAAAAA NOT CCCCCCCCCCCCCCC!!!!!!!!!!!!!!!!!!!!!!!!!!!Option a will always ship not train.

Ans 4:

maanya Kumar from Global Indian International School, Noida
Class : Class 4
answer should be a

Ans 5:

Aarya Ranjan from Chrysalis High Varthur, bangalore
Class : Class 4
it is asking mode of transport not how those four options are different that is why it should be a not c!

Ans 6:

Bhavni Oberoi from Amity International School, Visakhapatnam
Class : Class 4
it should be A

Ans 7:

Aarya Ranjan from Chrysalis High Varthur, bangalore
Class : Class 4
it should be a!!!!!!!!!!!!!!!!!!!!!!!!!!!!not c

Ans 8:

Aarya Ranjan from Chrysalis High Varthur, bangalore
Class : Class 4
it is not asking which one is carrying goods and which one is carrying passengers it is asking that we have to find the odd one out by the classification of transport so as ship is water transport and others are land transport so the answer should be A

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