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Vayun from NPS HSR, Bengaluru
Subject :NSO    Class : Class 8

Ans 1:

Sherlock Holmes from Baker Street, London
Class : Class 9

Ans 2:

Student from School, City
Class : Class 8
Also, B and D can be more musical than A because they change frequently, constituting a pleasant sound, whereas A is a single monotone.

Ans 3:

Ayush Pal from GD Goenka Public School Dakshineswar, West Bengal, India, Kolkata
Class : Class 8

Ans 4:

Student from School, City
Class : Class 8
B and D can also constitute a pleasant sound as they are also similar to A.

Ans 5:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
This question isn't related to any pleasant or unpleasant sound. Also, if the distance travelled by the sonic vibrations is 2x, time is 2 seconds and speed is 1.5 km/s, the distance= speed*time=1.5*2=3 km. The answer should be 3 km, not 1.5 km. SOF is requested to kindly rectify this error.

Ans 6:

Student from School, City
Class : Class 8

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BRahul pillai from Bvm elamakkara , Cochin
Subject :NSO    Class : Class 10

Position of five elements P, Q, R, S and T is shown on the simplified form of the periodic table.
image
The element which has maximum tendency to lose electron, the element which has maximum tendency to gain electrons and the element which has no tendency to gain or lose electrons are respectively

A P, R and S
B S, R and T
C Q, S and P
D Q, R and T.


the correct answer for this question is option D.This is because Qhas more metallic property as compared to S,thus it more electropositive in nature .But the answer given for this question is B.I request you to revise the answer key

Ans 1:

Jayati Gupta from Dps, YAMUNANAGAR
Class : Class 6
Q is a metal and S is a non metal, and therefore Q has a greater chance at losing electrons. The correct option is D.

Ans 2:

BRahul pillai from Bvm elamakkara , Cochin
Class : Class 10
what

Ans 3:

BRahul pillai from Bvm elamakkara , Cochin
Class : Class 10
the answer for this question is option D,since Q is more electropositive than s and thus will lose electrons easily .But in the answer key it is given as optionB.

Ans 4:

Anantha Narayanan M S from NPS Goaplapuram Chennai, Chennai
Class : Class 9
The givern answer is wrong!!!!!!!!!

Ans 5:

Shreyansh Samaddar from St.Xavier High School, Raipur
Class : Class 10
YEAH What is this! Answer should be D!!!!!!! What is this!

Ans 6:

Janani swethaa from CS ACADEMY, Erode
Class : Class 10
It is wrong. Answer is D

Ans 7:

Janani swethaa from CS ACADEMY, Erode
Class : Class 10

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JADEN GABRIEL ROY from BISHOP REMIGIUS CBSE SCHOOL, NAGERCOIL
Subject :NSO    Class : Class 5

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Twesh Shreeniwas from DPS, Gurgaon
Subject :NSO    Class : Class 8

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SHREYAS ANDOTRA from RYAN INTERNATIONAL SCHOOL, CHANDIGARH
Subject :NSO    Class : Class 7

The given figure represents the pattern of blood circulation in human body.

Select the incorrect statement regarding this.

AQ and P carry oxygenated blood whereas R and S carry deoxygenated blood.
BY represents right side of the heart, i.e., right atrium and right ventricle.
CP and S carry oxygenated blood whereas Q and R carry deoxygenated blood.
DX represents left side of the heart, i.e., left atrium and left ventricle.


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Bhagyesh Kamal from DPS, Mumbai
Subject :NSO    Class : Class 8

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Sanskar Gautam from dps, dadri
Subject :NSO    Class : Class 5

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TejMan from Vel's Vidyashram, Chennai
Subject :NSO    Class : Class 8

A spoon is kept in contact with ice cubes for some time. Later, the same spoon was held over the flame of a small candle. The observation is shown in the figure.
What do you infer from the given figure?


A Spoon is an inflammable substance.
B Burning of candle is a spontaneous process.
C Carbon dioxide is a product of combustion.
D Water vapour is a product of combustion.


The correct answer is D . The combustion of Hydrocarbons produces water/water vapour .

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Rishik De Sarkar from Delhi Public School Gurgaon, Gurgaon
Subject :NSO    Class : Class 3

Ans 1:

Jdjdjdj from Delhi public school Bangalore east, Bangalore
Class : Class 3
Speed post

Ans 2:

Shyam Jayesh from Shyam Jayesh, Bangalore
Class : Class 3

Ans 3:

Krishiv Chandan Sukul from Seven 11 Scholastic School, Mumbai
Class : Class 5
is all of these.

Ans 4:

Sushree snehasikta behera from Mother's public school , Bhubaneswar
Class : Class 2
option a speed post

Ans 5:

Vivaan Joshi from Indira National School, Pune
Class : Class 4

Ans 6:

Rishik De Sarkar from Delhi Public School Gurgaon, Gurgaon
Class : Class 7

Ans 7:

Samarth Arcot Praveen from National Public School Rajajinagar, Bangalore
Class : Class 4
the question framed incorrectly. It should have been sending wedding card at the earliest

Ans 8:

Yatindra G from SBOA, Chennai
Class : Class 4
speed post

Ans 9:

Shyam Jayesh from Shyam Jayesh, Bangalore
Class : Class 3

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Eklavya Gondule from DPS Bhilai, BHILAI
Subject :NSO    Class : Class 7

Ans 1:

Eklavya Gondule from DPS Bhilai, BHILAI
Class : Class 7

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