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 »
Introduction Chemistry deals with the composition, structure, properties and interaction of matter and is of much use to human beings in daily life. Importance of Chemistry Chemistry has a great impact on human life since it has a wide range of applications in different fields. These are mentioned below: (A) In Agriculture and Food: It …
CLASS 11 CHAPTER 1- Some Basic concepts of Chemistry Read More »
Question1. Why do organisms take food? Solution1: Living organisms eat food to get energy, which is essential for performing growth and for the maintenance of their body. Question2. Distinguish between a parasite and a saprotroph. Solution2: Saprotroph Parasite These are the organism that takes nutrients from the dead or decaying organic matter. These are the organism that …
NCERT SOLUTIONS CLASS 7 CHAPTER 1 Nutrition in Plants Read More »
Question 1 Do you find that all living beings need the same kind of food? Solution 1 No, the food requirements of all living organisms are different. On the basis of food requirements, living organisms are categorised into three: Herbivores: Animals that eat only plants and products of plants. For example Buffalo, Cow, Goat, …
NCERT SOLUTIONS CLASS 6 CHAPTER 1 – Food: Where does it come from? Read More »
Elements are classified as Metals and Non-Metals based on their physical and chemical properties. A comparative study of their physical properties is as follows: Chemical Properties of Metals The metal reacts with air or oxygen to form metal oxide. For example, Copper reacts with oxygen to form Copper Oxide. …
Introduction The taste of the food that we eat depends on the presence of acids and bases in them. Acids are sour in taste and change the colour of blue litmus to red. Bases are bitter in taste and change the colour of red litmus to blue. Litmus and turmeric are natural indicators. Some other …
Introduction Everything around us is made of matter. For example, wood, paper etc. All the matter around us is not pure. It can be pure or impure. Elements An element is a substance that cannot be divided further into simpler substances by any chemical methods like applying heat, light or electric energy. For example, Carbon …
