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The service covers textbooks of all subjects published by NCERT for classes I to XII in Hindi, English and Urdu. The Entire book or individual chapters can be downloaded provided the …
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Prelims.pmd - NCERT
science textbook wherever possible — the concerns for people with special needs, the issues of gender discrimination, energy and environment have found their natural place in this book.
10.1 REFLECTION OF LIGHT A highly polished surface, such as a mirror, reflects most of the light falling on it. You are already familiar with the laws of reflection of light.
Recall the law of conservation of mass that you studied in Class IX; mass can neither be created nor destroyed in a chemical reaction. That is, the total mass of the elements present in the …
NCERT
NCERT textbook for class 10 Social Science.
general physical properties of metals and non-metals in the class. You must have concluded that we cannot group elements according to their physical properties alone, as there are many …
n Collect the following solutions from the science laboratory– hydrochloric acid (HCl), sulphuric acid (H 2 SO 4), nitric acid (HNO 3), acetic acid (CH 3 COOH), sodium hydroxide (NaOH), …
A current of 0.5 A is drawn by a filament of an electric bulb for 10 minutes. Find the amount of electric charge that flows through the circuit. Solution We are given, I = 0.5 A; t = 10 min = 600 …
188 Science entering the eye. The eye lens forms an inverted real image of the object on the retina. The retina is a delicate membrane having enormous number of light-sensitive cells. The …