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Subject :NSO    Class : Class 8

Ans 1:

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 2:

Class : Class 9
Vaccum

Ans 3:

Class : Class 8
Vacuum

Ans 4:

Class : Class 8
Air

Ans 5:

Class : Class 9
Through solids since the atoms are closely packed in them.

Ans 6:

Class : Class 2
Water

Ans 7:

Class : Class 2
Vacuum

Ans 8:

Class : Class 8
VACCUM BUT LIGHT CAN

Ans 9:

Class : Class 8
vacuum

Ans 10:

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.

Ans 11:

Class : Class 8
vaccum

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Subject :NSO    Class : Class 9

Ans 1:

Class : Class 10
HYDROGEN AND OXYGEN

Ans 2:

Class : Class 9
Hydrogen and Oxygen H2O

Ans 3:

Class : Class 9
yes it is hydrogen and oxygen

Ans 4:

Class : Class 9
hydrogen and oxygen.

Ans 5:

Class : Class 9
Hydrogen,oxygen

Ans 6:

Class : Class 2
hydrogen and oxygen

Ans 7:

Class : Class 10
Hydrogen & Oxygen

Ans 8:

Class : Class 2
Sodium Carbonate

Ans 9:

Class : Class 10
Sodium carbonate probably

Ans 10:

Class : Class 10
sodium carbonate

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Subject :NSO    Class : Class 10

Ans 1:

Class : Class 10
LARYNX

Ans 2:

Class : Class 4
larnyx

Ans 3:

Class : Class 6
Larynx

Ans 4:

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 5:

Class : Class 2
Larynx

Ans 6:

Class : Class 10

Ans 7:

Class : Class 8
Larynx

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Subject :NSO    Class : Class 10

Ans 1:

Class : Class 10
MELANIN

Ans 2:

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

Ans 3:

Class : Class 8
The melanin found in the hair follicle determines our hai colour.They are of two types - eumelanin and pheomelanin

Ans 4:

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:

Class : Class 2
MELANIN

Ans 6:

Class : Class 10
Melanin

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Subject :NSO    Class : Class 10

Ans 1:

Class : Class 9
nitrogen

Ans 2:

Class : Class 10
Nitrogen

Ans 3:

Class : Class 2
Nitrogen

Ans 4:

Class : Class 10
Nitrogen.

Ans 5:

Class : Class 10
It is nitrogen.

Ans 6:

Class : Class 10
SHWETA, YOU SHOULD MENTION 7th ELEMENT ACCORDING TO MASS NO. OR ATOMIC NO.OR...WHAT?

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Subject :NSO    Class : Class 10

Ans 1:

Class : Class 10
CORONA

Ans 2:

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 3:

Class : Class 2
CORONA

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Subject :NSO    Class : Class 10

Ans 1:

Class : Class 10
STRATIFIED KERATINISED SQUAMOUS EPITHELIUM

Ans 2:

Class : Class 10
I think it would be Epidermis.

Ans 3:

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.

Ans 4:

Class : Class 2
Epidermis

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 5
The skin

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