Topic outline

  • Science For Grade 7

    • Science-Class 7 (CBSE/NCERT)-Chapter 1- Nutrition in Plants - Questions and Answers/Notes/Worksheets – 1

      Tags: Class VII - Nutrition in Plants, CBSE Grade 7 Science Nutrition in plants, Science - Class 7- Nutrition in plants, NCERT Solutions for Class 7th: Ch 1 Nutrition in Plants, Class 7 CBSE Science Nutrition in Plants, CBSE class 7 science nutrition in plants, Grade 7 –Science - CBSE / NCERT – Nutrition in Plants Question Bank for seventh class, Question and Answers free worksheet PDF on Nutrition in Plants, Practice page and Important question and Extra question on Nutrition in Plants for seventh standard, State true and false, Fill in the blanks on Nutrition in Plants for 7th standard, Name a parasitic plant with yellow, slender and tubular stem. Give one example of parasite. Name one plant that traps and feeds on insects. Name a plant that has both autotrophic and heterotrophic mode of nutrition. How can cells be seen? What are fluffy umbrella-like patches growing on rotting wood during the rainy season called? Where is nucleus located in a cell? What are carbohydrates made up of? From where do plants get raw materials to prepare their food? Where does the synthesis of food in a plant usually take place? What is the ultimate source of energy for all living organisms? Write an equation that represents the process photosynthesis. What are the components of food? What are insectivorous plants? What do you mean by nutrition? Why photosynthesis is named so?  What are heterotrophs? What are stomata? What are called autotrophs? What is heterotrophic nutrition?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 1- Nutrition in Plants - Questions and Answers/Notes/Worksheets – 2

      Tags: Class VII - Nutrition in Plants, CBSE Grade 7 Science Nutrition in plants, Science - Class 7- Nutrition in plants, NCERT Solutions for Class 7th: Ch 1 Nutrition in Plants, Class 7 CBSE Science Nutrition in Plants, CBSE class 7 science nutrition in plants, Grade 7 –Science - CBSE / NCERT – Nutrition in Plants Question Bank for seventh class, Question and Answers free worksheet PDF on Nutrition in Plants, Practice page and Important question and Extra question on Nutrition in Plants for seventh standard, What are nutrients? What is chlorophyll? Where and in what conditions do fungi grow? How do fungi grow and develop? Why algae are green in colour? What are the raw materials required for photosynthesis? Do insectivorous plants perform photosynthesis? What are algae? Why do organisms need to take food? Why plants such as pitcher plant do not get all the required nutrients from the soil in which they grow? What is Cuscuta? What is the role of rhizobium bacteria in leguminous plant? Some plants have deep red, violet or brown leaves. Do these leaves also carry out photosynthesis? What is so special about the leaves that they can synthesis food but other parts of the plant cannot? How would you test the presence of starch in leaves? How do plants obtain the raw materials from the surroundings?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 1- Nutrition in Plants - Questions and Answers/Notes/Worksheets – 3

      Tags: Class VII - Nutrition in Plants, CBSE Grade 7 Science Nutrition in plants, Science - Class 7- Nutrition in plants, NCERT Solutions for Class 7th: Ch 1 Nutrition in Plants, Class 7 CBSE Science Nutrition in Plants, CBSE class 7 science nutrition in plants, Grade 7 –Science - CBSE / NCERT – Nutrition in Plants Question Bank for seventh class, Question and Answers free worksheet PDF on Nutrition in Plants, Practice page and Important question and Extra question on Nutrition in Plants for seventh standard, Explain the mode of nutrition in fungi. If the pitcher plant is green and carries out photosynthesis, then why does it feed on insects? How farmer is benefited from symbiotic relationship between rhizobium bacteria and legumes? How do plants transport raw materials to the food factories of the plants? From where do the plants obtain nitrogen? Can we say that the insectivorous plants are partial heterotrophs? Explain symbiotic relationship in rhizobium and leguminous plants. Give a brief description of the process of synthesis of food in green plants? Explain symbiotic relationship with the help of example.

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    • Science-Class 7 (CBSE/NCERT)-Chapter 1- Nutrition in Plants - Questions and Answers/Notes/Worksheets – 4

      Tags: Class VII - Nutrition in Plants, Grade 7 –Science - CBSE / NCERT – Nutrition in Plants Question Bank for seventh class, Question and Answers free worksheet PDF on Nutrition in Plants, Practice page and Important question and Extra question on Nutrition in Plants for seventh standard, Define cells, cell membrane, nucleus and cytoplasm. Distinguish between a parasite and a saprotroph. Show with the help of a sketch that the plants are the ultimate source of food. Can we imagine life on earth in the absence of photosynthesis? Draw a diagram showing photosynthesis. Write a note on pitcher plant? How nutrients are replenished in the soil?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 2- Nutrition in Animals - Questions and Answers/Notes/Worksheets – 1

      Tags: Class VII - Nutrition in Plants, Grade 7 –Science - CBSE / NCERT – Nutrition in Animals Question Bank for seventh class, Question and Answers free worksheet PDF on Nutrition in Animals, Practice page and Important question and Extra question on Nutrition in Animals for seventh standard, State true and false, Fill in the blanks on Nutrition in Animals for 7th standard, What is the organ that stores bile? Which part of the digestive canal is involved in killing bacteria? Name the part of digestive canal involved in chewing of food. Where are fats digested in the body? Where is the water from undigested food absorbed in the body? What kills bacteria that enter along with the juices to act? Where food is completely digested? Where are faeces formed in the human body? Which glands secrete saliva? Which glands secrete saliva? Which gland in our body secretes bile? Where faeces are stored? What are the end products of carbohydrate? Name the end products of fats. Write the end products of proteins. What causes diarrhoea in human beings? Which is the largest gland in the human body? What is ingestion? What are the different types of teeth? What does saliva do to food in our mouth?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 2- Nutrition in Animals - Questions and Answers/Notes/Worksheets – 2

      Tags: Class VII - Nutrition in Plants, Grade 7 –Science - CBSE / NCERT – Nutrition in Animals Question Bank for seventh class, Question and Answers free worksheet PDF on Nutrition in Animals, Practice page and Important question and Extra question on Nutrition in Animals for seventh standard, How does food pass from the mouth to the stomach? What is rumen? How does an amoeba move? What is the finger like projections present in the inner wall of the small intestine? Which organ expelled out the undigested and unabsorbed residues from human body? What are permanent teeth? What does animal nutrition include? What do you mean by animal nutrition? What are the different modes of feeding in animals? What is digestion? Name the glands that secrete digestive juices. What is diarrhoea? What is ORS? Where is the bile produced? Which component of the food does it help to digest? What are ruminant animals? Where is the pancreas located in human body? How does an amoeba capture its food? What do pancreatic juices digest? What is absorption in terms of digestion? What do you mean by rumination? What is cud? What are milk teeth?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 2- Nutrition in Animals - Questions and Answers/Notes/Worksheets – 3

      Tags: Class VII - Nutrition in Plants, Grade 7 –Science - CBSE / NCERT – Nutrition in Animals Question Bank for seventh class, Question and Answers free worksheet PDF on Nutrition in Animals, Practice page and Important question and Extra question on Nutrition in Animals for seventh standard, What are the major culprits of tooth decay? Why do we get instant energy from glucose? What are the main parts of the alimentary canal? How is food prevented from entering the windpipe? What is small intestine? Why we cannot digest cellulose like the cattle do? Can we survive only on raw, leafy vegetables/grass? Discuss. Explain the process of digestion in grass eating animals. Write a short note on digestion in starfish. Write a short note on large intestine. How can we prevent tooth decay? What are villi? What is their location and function? What are the functions of the tongue in human body?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 2- Nutrition in Animals - Questions and Answers/Notes/Worksheets – 4

      Tags: Class VII - Nutrition in Plants, Grade 7 –Science - CBSE / NCERT – Nutrition in Animals Question Bank for seventh class, Question and Answers free worksheet PDF on Nutrition in Animals, Practice page, Important question and Extra question on Nutrition in Animals for seventh standard, Draw a labeled diagram of amoeba. Name the type of carbohydrate that can be digested by ruminants but not by humans. Give the reason also. What is tooth decay? Explain the process of nutrition in Amoeba. What substances are secreted in the stomach? Write one similarity and one difference between the nutrition in amoeba and human beings. How does the stomach work?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 2- Nutrition in Animals - Questions and Answers/Notes/Worksheets – 5

      Tags: Class VII - Nutrition in Plants, Grade 7 –Science - CBSE / NCERT – Nutrition in Animals Question Bank for seventh class, Question and Answers free worksheet PDF on Nutrition in Animals, Practice page, Important question and Extra question on Nutrition in Animals for seventh standard, Draw a labeled diagram of digestive system of cow. Draw a labeled diagram showing arrangement of teeth and different type of teeth. Draw a labeled diagram of human digestive system.

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    • Science-Class 7 (CBSE/NCERT)-Chapter 3 - Fibre to Fabric - Questions and Answers/Notes/Worksheets – 1

      Tags: Class VII - Fibre to Fabric, Grade 7 –Science - CBSE / NCERT – Fibre to Fabric Question Bank for seventh class, Question and Answers free worksheet PDF on Fibre to Fabric, Practice page and Important question and Extra question on Fibre to Fabric for seventh standard, State true and false, Fill in the blanks on Fibre to Fabric for 7th standard, Which parts of the black sheep have wool? What is meant by the white fleece of the lamb? What is Sericulture? What is the scientific name of mulberry? Name some animals which give us wool. Which leads the world in silk production? Is silk a good conductor of heat? What do you mean by yarn? Name some Indian breed of sheep. What are the different types of silk? Define spinning. What is the most common silk moth? What do you understand by wool? What do you mean by occupational hazards? What is cocoon? Where does angora wool come from? What are silkworms? What is weaving? What is Rearing? What is called reeling the silk?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 3 - Fibre to Fabric - Questions and Answers/Notes/Worksheets – 2

      Tags: Class VII - Fibre to Fabric, Grade 7 –Science - CBSE / NCERT – Fibre to Fabric Question Bank for seventh class, Question and Answers free worksheet PDF on Fibre to Fabric, Practice page and Important question and Extra question on Fibre to Fabric for seventh standard, Why caterpillars need to shed their skin when they grow bigger? What do you mean by shearing? Write the sequence of steps involved in the processing of wool. How are Pashmina Shawls made? Why sheep have a thick coat of hair? What is fibre? How and when shearing is done? Why shearing does not hurt the sheep? What is scouring? Where does angora wool come from? What is silk route? What do sheep feed on? Where rearing and breeding of sheep is popular in India? What are the two types of fibres that form the fleece of a sheep? Why caterpillars should not be collected with bare hands? Why sorter's job in wool industry is a risky job? What is selective breeding?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 3 - Fibre to Fabric - Questions and Answers/Notes/Worksheets – 3

      Tags: Class VII - Fibre to Fabric, Grade 7 –Science - CBSE / NCERT – Fibre to Fabric Question Bank for seventh class, Question and Answers free worksheet PDF on Fibre to Fabric, Practice page and Important question and Extra question on Fibre to Fabric for seventh standard, Explain the process of obtaining silk from cocoon. What do you know about discovery of silk? Explain various steps involved in the process of making wool? Write a note on rearing silkworm.

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    • Science-Class 7 (CBSE/NCERT)-Chapter 4-Heat - Questions and Answers/Notes/Worksheets – 1

      Tags: Class VII - Heat, CBSE Grade 7 Science Heat, Science - Class 7- Heat, NCERT Solutions for Class 7th: Ch 4 Heat, Class 7 CBSE Science Heat, CBSE class 7 science Heat, Grade 7 –Science - CBSE / NCERT – Heat Question Bank for seventh class, Question and Answers free worksheet PDF on Heat, Practice page and Important question and Extra question on Heat for seventh standard, State true and false, Fill in the blanks on Heat for 7th standard, In which direction does the smoke go? What do you mean by temperature? Which device is used to measure temperature? What is that silver stuff in a thermometer? What is the unit of temperature as adopted by India? What is the normal temperature of a human being? What is the range of a laboratory thermometer? What is the use of the kink in clinical thermometer? How does heat flow from one object to another? Does transfer of heat by radiation require any medium? Do all hot bodies radiate heat? How does heat transfer in liquids and gases? Will heat transfer if the temperature of two objects is the same? What should be the level of mercury in the clinical thermometer before use? How does heat transfer in solids? What is the best way to clean a thermometer? What is Conduction? What are insulators of heat? What are conductors of heat?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 4-Heat - Questions and Answers/Notes/Worksheets – 2

      Tags: Class VII - Heat, CBSE Grade 7 Science Heat, Science - Class 7- Heat, NCERT Solutions for Class 7th: Ch 4 Heat, Class 7 CBSE Science Heat, CBSE class 7 science Heat, Grade 7 –Science - CBSE / NCERT – Heat Question Bank for seventh class, Question and Answers free worksheet PDF on Heat, Practice page and Important question and Extra question on Heat for seventh standard, What is clinical thermometer? Give two examples each of conductors and insulators of heat. How does the heat travel in air? What do you understand by heat? What is the use of maximum-minimum thermometer? One litre of water at 30°C is mixed with one litre of water at 50°C. The temperature of the mixture will be, Why does the mercury not fall or rise in a clinical thermometer when taken out of the mouth? Why clinical thermometer cannot be used to measure high temperatures? Explain land breeze. What is the concern associated with the use of mercury thermometer? Explain the construction of clinical thermometer. In places of hot climate it is advised that the outer walls of houses be painted white. Explain. Is it possible to construct buildings that are not affected much by heat and cold outside? What do you mean by maximum-minimum thermometer? Why clinical thermometers range from 35°C to 42°C? Discuss why wearing more layers of clothing during winter keeps us warmer than wearing just one thick piece of clothing.

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    • Science-Class 7 (CBSE/NCERT)-Chapter 4-Heat - Questions and Answers/Notes/Worksheets – 3

      Tags: Class VII - Heat, CBSE Grade 7 Science Heat, Science - Class 7- Heat, NCERT Solutions for Class 7th: Ch 4 Heat, Class 7 CBSE Science Heat, CBSE class 7 science Heat, Grade 7 –Science - CBSE / NCERT – Heat Question Bank for seventh class, Question and Answers free worksheet PDF on Heat, Practice page and Important question and Extra question on Heat for seventh standard, When we come out in the sun, we feel warm. How does the heat from the sun reach us? In summer we prefer light-coloured clothes and in winter we usually wear dark-coloured clothes. Why is it so? What is sea breeze? Two thin blankets joined together are usually warmer than one thick blanket. Give reason. How water gets heated? An iron ball at 40°C is dropped in a mug containing water at 40°C. The heat will, A wooden spoon is dipped in a cup of ice cream. Its other end, Stainless steel pans are usually provided with copper bottoms. The reason for this could be that, State the similarities and differences between the laboratory thermometer and the clinical thermometer. What are the precautions that need to be observed while reading a clinical thermometer? State the precaution to be observed while using a laboratory thermometer.

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    • Science-Class 7 (CBSE/NCERT)-Chapter 5 - Acids, Bases and Salts - Questions and Answers/Notes/Worksheets – 1

      Tags: Class VII - Acids, Bases and Salts, CBSE Grade 7 Science Acids, Bases and Salts, Science - Class 7- Acids, Bases and Salts, NCERT Solutions for Class 7th: Ch 5 Acids, Bases and Salts, Class 7 CBSE Science Acids, Bases and Salts, CBSE class 7 science Acids, Bases and Salts, Grade 7 –Science - CBSE / NCERT – Acids, Bases and Salts Question Bank for seventh class, Question and Answers free worksheet PDF on Acids, Bases and Salts, Practice page and Important question and Extra question on Acids, Bases and Salts for seventh standard, State true and false, Fill in the blanks on Acids, Bases and Salts for 7th standard, What is acid rain? Which acid naturally present in our stomach? What is the role of hydrochloric acid in the stomach? Which acid is present in an ant sting? What is the nature of soap solution? What is the nature of distilled water? State the nature of baking soda. Where does the word acid come from? Why curd, lemon juice, orange juice and vinegar taste sour? Which is the most commonly used natural indicator? Tom rubs a solution between fingers and feels soapy, what is the nature of that solution? Name the acid which is present in each cell of our body. When red litmus paper is dipped in a solution; it remains red, what is the nature of the solution? What are the effects of acid rain? What does organic matter do in soil? Why solid baking soda does not change colour of dry litmus paper? How acidic soil can be treated? What are salts? Give example. What is the role of DNA in the cell the human body?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 5 - Acids, Bases and Salts - Questions and Answers/Notes/Worksheets – 2

      Tags: Class VII - Acids, Bases and Salts, CBSE Grade 7 Science Acids, Bases and Salts, Science - Class 7- Acids, Bases and Salts, NCERT Solutions for Class 7th: Ch 5 Acids, Bases and Salts, Class 7 CBSE Science Acids, Bases and Salts, CBSE class 7 science Acids, Bases and Salts, Grade 7 –Science - CBSE / NCERT – Acids, Bases and Salts Question Bank for seventh class, Question and Answers free worksheet PDF on Acids, Bases and Salts, Practice page and Important question and Extra question on Acids, Bases and Salts for seventh standard, Give examples of some acids and bases. What are indicators? What is the effect of the China rose indicator on acidic and basic solutions? Ammonia is found in many household products, such as window cleaners. It turns red litmus blue. What is its nature? Why a turmeric stain on my white shirt is turned to red when it is washed with soap. How to prepare lime water? Blue litmus paper is dipped in a solution. It remains blue. What is the nature of the solution? Explain. What do you mean by neutral solution? Give examples. Is the distilled water acidic/basic/neutral? How would you verify it? How does rain become acidic? Why factory waste is neutralised before disposing it into the water bodies? Calamine solution is applied on the skin when an ant bites. Give reason. Name the source from which litmus solution is obtained. What is the use of this solution? Why we take an antacid tablet when we suffer from acidity? Explain the process of neutralisation with the help of an example.

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    • Science-Class 7 (CBSE/NCERT)-Chapter 5 - Acids, Bases and Salts - Questions and Answers/Notes/Worksheets – 3

      Class 7- Acids, Bases and Salts, NCERT Solutions for Class 7th: Ch 5 Acids, Bases and Salts, Class 7 CBSE Science Acids, Bases and Salts, CBSE class 7 science Acids, Bases and Salts, Grade 7 –Science - CBSE / NCERT – Acids, Bases and Salts Question Bank for seventh class, Question and Answers free worksheet PDF on Acids, Bases and Salts, Practice page and Important question and Extra question on Acids, Bases and Salts for seventh standard, Dorji has a few bottles of soft drink in his restaurant. But, unfortunately, these are not labelled. He has to serve the drinks on the demand of customers. One customer wants acidic drink, another wants basic and third one wants neutral drink. How will Dorji decide which drink is to be served to whom? State few properties of base. State few properties of acids. State the differences between acids and bases. Three liquids are given to you. One is hydrochloric acid; another is sodium hydroxide and third is a sugar solution. How will you identify them? You have only turmeric indicator.

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