Class 8 Science NCERT Solutions Chapter 11: Force and Pressure Question 1. Give two examples of each of situations in which you push or pull to change the state of motion of objects. Answer. (1) If a rubber ball or marble is placed on a very smooth surface and given a small push, it starts […]
Class 8 Science NCERT Solutions Chapter 10: Reaching the Age of Adolescence Question 1. What is the term used for chemical secretions of endocrine glands responsible for changes taking place in the body? Answer. The term used for secretions of endocrine glands is hormones, which are responsible for various changes taking place in the body.
Class 8 Science NCERT Solutions Chapter 9: Reproduction in Animals Question 1. Explain the importance of reproduction in organisms. Answer. The production of new individuals from their parents is known as reproduction. Reproduction is very important as it ensures the continuation of a species. If the process of reproduction does not exist, the species would
Class 8 Science NCERT Solutions Chapter 8: Cell Structure and Functions Question 1. Indicate whether the following statements are True (T) or False (F): (a)Â Unicellular organisms have a one-celled body. (T/F) (b)Â Muscle cells are branched. (T/F) (c)Â The basic living unit of an organism is an organ. (T/F) (d)Â Amoeba has an irregular shape. (T/F) Answer. (a)Â True
Class 8 Science NCERT Solutions Chapter 7: Conservation of Plants and Animals Question 1. Fill in the blanks: A place where animals are protected in their natural habitat is called…………. Species found only in a particular area are known as………… Migratory birds fly to faraway places because of…………… changes. Answer. wildlife sanctuary endemic species climatic. Question
Class 8 Science NCERT Solutions Chapter 6: Combustion and Flame Question 1. List conditions under which combustion can take place. Answer. Conditions under which combustion can take place are as follows : The presence of air (oxygen). The ignition temperature should be reached. A source of inflammable substance. Question 2. Fill in the blanks: Burning
Class 8 Science NCERT Solutions Chapter 5: Coal and Petroleum Question 1. What are the advantages of using CNG and LPG as fuels? Answer. The advantages of using CNG and LPG as fuels are as follows: These are clean fuels. These are low-cost fuels. These are available easily. These can be used directly for burning
Class 8 Science NCERT Solutions Chapter 4: Materials: Metals and Non-Metals Question 1. Which of the following can be beaten into thin sheets? (a)Â Zinc (b)Â Phosphorus (c)Â Sulphur (d)Â Oxygen Answer. (a)Â Zinc. Question 2. Which of the following statements is correct? (a)Â All metals are ductile. (b)Â All non-metals are ductile. (c)Â Generally, metals are ductile. (d)Â Some non-metals are ductile. Answer.
Class 8 Science NCERT Solutions Chapter 3: Synthetic Fibres and Plastics Question 1. Explain why some fibres are called synthetic. Answer. Since man-made fibres are synthesised from petrochemicals, they are called synthetic fibres. Question 2. Mark the correct answer. Rayon is different from synthetic fibres because (a)Â it has a silk-like appearance (b)Â it is obtained from
Class 8 Science NCERT Solutions Chapter 2: Microorganisms: Friend and Foe Question 1. Fill in the blanks. Microorganisms can be seen with the help of a……………… Blue-green algae fix………….. directly from the air and enhance the fertility of the soil. Alcohol is produced with the help of………………. Cholera is caused by…………………. Answer. microscope nitrogen yeast
