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Shweta Basu from Amity international School, Gurgaon
Subject :NSO    Class : Class 8

Ans 1:

binayak mohanta from st.paul's school,rourkela, Rourkela
Class : Class 8
vaccum

Ans 2:

Anu Sharma from DPS Noida, Noida
Class : Class 2
Vacuum

Ans 3:

vikram Aditya from new era high school , patna
Class : Class 8
Vacuum

Ans 4:

Tejan Gandhi from Chanderbala Modi Academy, Ankleshwar
Class : Class 8
In solids, especially when atoms are closely packed, metals.. Sound does travel in water and air with slow speed 1000, 300 m/s respectively whereas in metals with 3000 m/s.. And sound doesn't travel in vaccum at all..

Ans 5:

Aditya Prasad from Notre Dame , Gumla
Class : Class 9
Through solids since the atoms are closely packed in them.

Ans 6:

vikram Aditya from new era high school , patna
Class : Class 8
Air

Ans 7:

Khavya from Sindhi Model School, Chennai
Class : Class 8
vacuum

Ans 8:

Sumit from Dhanbad public school Hirak Branch, Dhanbad
Class : Class 9
Vaccum

Ans 9:

Mayank Patel from Maharaja Agarsen Public School , Ghaziabad
Class : Class 8
VACCUM BUT LIGHT CAN

Ans 10:

Anu Sharma from DPS Noida, Noida
Class : Class 2
Water

Ans 11:

Ronit Deshmukhya from U.P. Public School, Suri
Class : Class 8
First of all , many have answered it vaccum but it is absolutely wrong because sound can not travel in vaccum and most probably the correct answer will be solid.

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Shweta Basu from Amity international School, Gurgaon
Subject :NSO    Class : Class 9

Ans 1:

Anu Sharma from DPS Noida, Noida
Class : Class 2
Sodium Carbonate

Ans 2:

Gh from Mahatma, Ghaziabad
Class : Class 10
Sodium carbonate probably

Ans 3:

Namanjain5589@Gmail.com from Yugantar Public School , Rajnandgaon
Class : Class 9
Hydrogen and Oxygen H2O

Ans 4:

abhinav from st. mary's school, dwarka, New Delhi
Class : Class 9
hydrogen and oxygen.

Ans 5:

Anu Sharma from DPS Noida, Noida
Class : Class 2
hydrogen and oxygen

Ans 6:

Vipup Sharma from HAPPY HOME PUBLIC SCHOOL SECTOR 11 ROHINI, New Delhi
Class : Class 10
HYDROGEN AND OXYGEN

Ans 7:

Nimesh from Dhanbad public school Hirak Branch, Dhanbad
Class : Class 10
Hydrogen & Oxygen

Ans 8:

Wyesvatha.J from Geethaanjali All India Senior Secondary School, Erode
Class : Class 10
sodium carbonate

Ans 9:

Sarthak Praveen Modhe from St. Thomas Convent Sr. Sec. School, Bhopal
Class : Class 9
yes it is hydrogen and oxygen

Ans 10:

keerthana from kakatiya high school, suryapet
Class : Class 9
Hydrogen,oxygen

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Shweta Basu from Amity international School, Gurgaon
Subject :NSO    Class : Class 10

Ans 1:

anjali1508in@gmail.com from little angels school pilibhit, pilibhit
Class : Class 8
Larynx

Ans 2:

Anu Sharma from DPS Noida, Noida
Class : Class 2
Larynx

Ans 3:

Aryan Sirohi from mount litera zee school, Bengaluru
Class : Class 4
larnyx

Ans 4:

Vaidehi from Agragami Convent School.Wardha., wardha
Class : Class 10
LARYNX

Ans 5:

Manasi Gupta from Delhi Public School,Durg, Durg
Class : Class 10

Ans 6:

Manasi Gupta from Delhi Public School,Durg, Durg
Class : Class 10
Larynx. It is a tube about 2 inches (5cm) long in adults. It sits above the windpipe (trachea) in the neck and in front of the food pipe. The food pipe in the upper part of the neck is called the pharynx.

Ans 7:

Nandana from St Thomas Residential School, Trivandrum
Class : Class 8
Larynx

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Shweta Basu from Amity international School, Gurgaon
Subject :NSO    Class : Class 10

Ans 1:

Prakharvarshney22@gmail.com from Sneh international school, New Delhi
Class : Class 10
Melanin

Ans 2:

anjali1508in@gmail.com from little angels school pilibhit, pilibhit
Class : Class 8
The melanin found in the hair follicle determines our hai colour.They are of two types - eumelanin and pheomelanin

Ans 3:

Anu Sharma from DPS Noida, Noida
Class : Class 2
MELANIN

Ans 4:

emawatson401 from St. George School, Geneva
Class : Class 10
Melanin: The pigment that gives human skin, hair and eyes their color. Dark skinned people have more Melanin in their skin that light skinned people have. Melanin is produced by cells called Melanocytes. A month back I was facing Hyperpigmentation. It was getting worse and worse day by day. One of my friend recommended to use "Cysteamine Creame". After using it I felt very good. I highly recommend to use it, if anyone having skin pigmentation issue.

Ans 5:

Vaidehi from Agragami Convent School.Wardha., wardha
Class : Class 10
MELANIN

Ans 6:

Manasi Gupta from Delhi Public School,Durg, Durg
Class : Class 10
Melanin. Melanin is produced by cells called melanocytes.There are three basic types of melanin: eumelanin, pheomelanin, and neuromelanin. The most common is eumelanin, of which there are two types—brown eumelanin and black eumelanin. Pheomelanin is a cysteine-containing red polymer of benzothiazine units largely responsible for red hair, among other pigmentation. Neuromelanin is found in the brain, though its function remains obscure.Vitiligo: A Common Cause of Loss of Skin Pigment

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Shweta Basu from Amity international School, Gurgaon
Subject :NSO    Class : Class 10

Ans 1:

Jigyasa Kumari from Ryan International School, Bengaluru
Class : Class 10
Nitrogen

Ans 2:

Pranav from Sri Aurobindo Memorial school, Bengaluru
Class : Class 9
nitrogen

Ans 3:

Vaidehi from Agragami Convent School.Wardha., wardha
Class : Class 10
SHWETA, YOU SHOULD MENTION 7th ELEMENT ACCORDING TO MASS NO. OR ATOMIC NO.OR...WHAT?

Ans 4:

Rayansh from Ryan Global School, Mumbai
Class : Class 10
It is nitrogen.

Ans 5:

Manasi Gupta from Delhi Public School,Durg, Durg
Class : Class 10
Nitrogen.

Ans 6:

Anu Sharma from DPS Noida, Noida
Class : Class 2
Nitrogen

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Shweta Basu from Amity international School, Gurgaon
Subject :NSO    Class : Class 10

Ans 1:

Manasi Gupta from Delhi Public School,Durg, Durg
Class : Class 10
Corona. But I m unable to find the reason fr the answer. somebody pl mention it. Shweta thanks for such gud quest!!! May I ask you from where u get such quests??

Ans 2:

Anu Sharma from DPS Noida, Noida
Class : Class 2
CORONA

Ans 3:

Vaidehi from Agragami Convent School.Wardha., wardha
Class : Class 10
CORONA

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Shweta Basu from Amity international School, Gurgaon
Subject :NSO    Class : Class 10

Ans 1:

Anu Sharma from DPS Noida, Noida
Class : Class 2
Epidermis

Ans 2:

Utkarsh Shankar from D.A.V. Public School, Bihar Sharif
Class : Class 10
I think it would be Epidermis.

Ans 3:

Vaidehi from Agragami Convent School.Wardha., wardha
Class : Class 10
STRATIFIED KERATINISED SQUAMOUS EPITHELIUM

Ans 4:

Manasi Gupta from Delhi Public School,Durg, Durg
Class : Class 10
They eventually reach the top layer called stratum corneum and are sloughed off, or desquamated. This process is called keratinization and takes place within weeks. The outermost layer of the epidermis consists of 25 to 30 layers of dead cells.

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khushboo from DPS, New Delhi
Subject :NSO    Class : Class 3

Ans 1:

suchir from dehli public school miyapur, Hyderabad
Class : Class 6
The skin

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