Introduction We already know that fibres are obtained either from animal sources or plant sources and are called natural fibres. Example: cotton and jute are obtained from plants. Silk and wool are obtained from animals. Wool Wool is obtained from animals bearing hair on their body such as sheep, yak, goats and some other animals. …
Introduction The clothes that we wear are made of different materials. Some clothes are soft, some are silky etc. The bedsheets, blankets, curtains, tablecloths, towels etc. all are made from different kinds of fabric. Also, we wear different types of clothes in different seasons. History of Clothing material In ancient times, people used the bark …
Question 1. Give an example of a metal which (i) is a liquid at room temperature. (ii) can be easily cut with a knife. (iii) is the best conductor of heat. (iv) is a poor conductor of heat. Answer Mercury Sodium Silver Mercury and Lead Question 2. Explain the meanings of malleable and ductile. Malleable …
Question 1 You have been provided with three test tubes. One of them contains distilled water and the other two contain an acidic solution and a basic solution, respectively. If you are given only red litmus paper, how will you identify the contents of each test tube? Answer: dip the red litmus paper in all …
NCERT SOLUTIONS CLASS 10 CHAPTER 2 – Acids, Bases and Salts Read More »
Question 1. What is meant by a pure substance? Answer: A substance made up of single type of particles is known as a pure substance. Question 2. List the points of differences between homogeneous and heterogeneous mixtures. Answer: S. No. Homogeneous Heterogeneous 2 It has a uniform composition. Its composition is non-uniform. 3 …
NCERT SOLUTIONS CLASS 9 CHAPTER 2 – Nature of matter Read More »
Question 1: Convert the following temperatures to the Celsius scale. (a) 300 K (b) 573 K Answer: Using the formula: – T (°C) = T (K) – 273.15 300K = (300 – 273) = 27O C 573 K = (573 – 273) = 300O C Question 2: Convert the following temperatures to the Kelvin …
NCERT SOLUTIONS CLASS 9 CHAPTER 1- Matters in our Surroundings Read More »
Question 1: Fill in the blanks: (a) Microorganisms can be seen with the help of a ____________. (b) Blue green algae fix __________ directly from air to enhance fertility of soil. (c) Alcohol is produced with the help of __________. (d) Cholera is caused by __________. Answer: (a) Microorganisms can be seen with the help …
NCERT SOLUTION CLASS 8 CHAPTER 2 – Microorganisms : Friends and Foe Read More »
Question 1. Select the correct word from the following list and fill in the blanks. float, water, crop, nutrients, preparation (a) The same kind of plants grown and cultivated on a large scale at a place is called _____________. (b) The first step before growing crops is _____________ of the soil. (c) Damaged seeds would _____________ …
NCERT SOLUTIONS CLASS 8 CHAPTER 1 – Crop Production and Management Read More »
Question1. Fill in the blanks: (a) The main steps of nutrition in humans are __________, __________, __________, _________ and __________. Solution 1(a): The main steps of nutrition in humans are __ingestion___, ___digestion___, ___absorption___, ___assimilation_ and __egestion__. (b) The largest gland in the human body is __________. Solution 1(b): The largest gland in the human body …
NCERT SOLUTION CLASS 7 CHAPTER 2 – Nutrition in Animals Read More »
Question 1: Name the major nutrients in our food. Answer 1 The major nutrients in our food are carbohydrates, proteins, Fats, Vitamins and minerals. Carbohydrates Fats Protein Question 2: Name the following: (a) The nutrients which mainly give energy to our body. (b) The nutrients that are needed for the growth …
NCERT SOLUTIONS CLASS 6 CHAPTER 2 – Components of food Read More »
