CBSE ADDA

Class 6 Adaptation in habitat Class 6 Science Simplify acclimatisation  Acclimatization is the process by which living organisms, including humans, gradually adapt to changes in their environment over time. It helps them cope with new or challenging conditions, such as changes in temperature, altitude, humidity, or other environmental factors. In simpler terms, acclimatization means getting used to and adjusting to different environmental conditions to improve comfort and functionality in a specific setting. It is a natural process that allows organisms to better thrive in their changing surroundings.  Class 06 study material        Class 07 Study Material class 06 science chapter 06 The Living Organisms-Characteristics and Habitats    Download form Jsunil Tutorial  LIVING SCIENCE CLASS6 SOLUTION CHAPTER.7 LIVING AND NON-LIVING

CBSE 10th Exam Pattern 2024 50% of the questions will be competency-based (MCQs, source-based questions, case study-based questions, etc.), 20% of the questions will be MCQs and 30% of the questions will be short/long answer type questions. To develop the skills to solve competency-based questions in CBSE Board exams, you need to focus on understanding the concepts deeply, improving critical thinking, and practicing effectively. Here are some strategies to help you excel in competency-based questions: Understand the Syllabus: Familiarize yourself with the CBSE Board syllabus and the competency-based framework. Understand the learning outcomes and competencies expected from each subject and topic. Master the Concepts: Focus on understanding the fundamental concepts of each subject. Avoid rote learning and instead, strive to understand the underlying principles. This will help you apply your knowledge to various situations and questions

   chapter 3 Synthetic Fibres and Plastics #Class_8_Science_mission A. Short answer type questions 1. Name a fibre that: (a) burns with a flame giving out smell like that of burning paper. (b) burns with a flame emitting smell of burning hair. (c) burns with a sooty flame leaving behind a black beady mass. Ans: a. cotton        b. wool           c. nylon 2. How thermoset is different from thermoplastic? Ans: Thermoset Plastics are hard and rigid. Example is Teflon, Bakelite and melamine. Thermoset plastic can be moulded to any shape only once and cannot be remoulded. Thermoplastics are soft and flexible though they are not elastic like rubber. 3. Why are plastics called polymers? Plastics are called polymers as they are made up of many small units which joined together. A substance having a single unit (molecule) structure is called a monomer (mono means single; mer means a unit). A substance made up of many (poly) units joining together is known as a polymer. 4. Wh

 chapter 3 Synthetic Fibres and Plastics #Class_8_Science_mission A. Multiple choice questions. 1. Which of these is thermoplastic in nature? (a) Teflon (b) Rayon (c) Bakelite (d) Polythene 2. To make a pan non-stick, we should get it coated with (a) Bakelite (b) Teflon (c) Rayon (d) Polythene 3. Poly wool fibre is (a) Natural (b) Synthetic (c) Monomer (d) Blended 4. The plastic that cannot be molten or moulded on giving it a shape is (a) Thermoplastic (b) Polyurethane (c) Thermoset (d) Acrylic 5. Raw material for rayon comes from (a) Cellulose (b) Coal (c) Petroleum (d) Animal bones Ans:     1. d       2. b       3. b       4. c       5. c B. Match the following: Column A Answer Column B 1. Rayon 2. Teflon 3. Acrylic 4. Polycot 5. Polyurethane 6. Polystyrene 1. c       2. d       3. e       4. f        5. b       6. a a. Thermocol b. Mattresses c. Dress material d. Non-stick cookware li

Science mission class 8 solutions chapter 1  Chapter 01 Crop production and Management Questions answer Part 03 B. Long answer type questions. 1. How and why did humans start practicing agriculture? Ans: Man was basically a food gatherer. At times when the weather got rough, he and his family had to eat stale food or had to go without food. This made him to change his habit to domesticating animals and growing plants along his dwelling units. This was the beginning of farming by man. 2. How do we separate healthy seeds from a mixture of seeds? Ans: Healthy seeds are separated from the mixture of seeds by following : a. Manually by seeing the physical condition of the seed, damaged seeds are often broken or damaged in other ways. B. by soaking them in water, damaged seeds are not able for germination process after soaking them. 3. What is intercropping? Name a few crops cultivated as intercrops. Ans: Planting a leguminous crop in between two major crops in a field such as planting of

Science Mission Part 02 Questions answer Class 08 Book Chapter 01 Crop production and Management Theoretical Questions A. Short answer type questions. 1. Differentiate between the following: i. Compost and green manure Compost: Compost is the decomposed plant and animal waste which may include waste food, excreta, dried leaves and other organic matter. It is made in a compost pit using microbes. Green Manure: The green leguminous plants with their root nodules is ploughed along with the soil. The green plants and the root nodules left in the soil decompose to form green manure. ii. Compost and fertilizers Compost is a manure prepared by a biological decomposition of organic waste. It takes longer period to absorbed by plants. It is lack of nitrogen, Phosphorous and potash Fertilizer is manure prepared in factories from chemicals (mineral). It is easily absorbed by soil. It is rich in nitrogen, Phosphorous and potash iii. Pesticides and weedicides Pesticides are substances that are mea

 SChand Publication Book Science Mission Question Answer Part 01 Chapter 01 Crop production and Management Class 08 Chapter 01 Crop production and Management A. Multiple choice questions. 1. To control and destroy pests, we use   (a) Fertilizers (b) Grazing animals (c) Pesticides (d) Weedicides 2. Weeds are (a) Microbes (b) Unwanted herbs  (c) Insects (d) Fungal pests 3. Rabi crops include (a) Wheat (b) Paddy(c) Corn (maize)(d) Melons 4. Raising both, plant crop and livestock in farm is (a) Mixed farming (b) Intercropping (c) Mixed cropping  (d) Rotation of crops 5. Bins, silos and granaries are used to store  (a) Vegetables (b) Grains (c) Fruits  (d) Bulbs (onion) Ans: 1. c           2. b       3. a       4. a      5. b B. Match the following. Column 'A' Ans Column 'B' 1. Maize crop 2. Wheat crop 3. Trifolium crop 4. Blue-green alga 5. Nitrification 6. Denitrification 1. c 2. b 3. e 4. f 5. a