Subject :NSO Class : Class 7
Subject :NSO Class : Class 8
Ans 2:
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 11:
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.
Post Your Answer
Subject :NSO Class : Class 9
Post Your Answer
Subject :NSO Class : Class 10
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.
Post Your Answer
Subject :NSO Class : Class 10
Ans 2:
Class : Class 8
The melanin found in the hair follicle determines our hai colour.They are of two types - eumelanin and pheomelanin
Ans 3:
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 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.
Post Your Answer
Subject :NSO Class : Class 10