No products in the cart.

Ask questions which are clear, concise and easy to understand.

Ask Question

    • Posted by Niyati Mangela 5 years, 1 month ago

    CBSE > Class 08 > Science
    • 0 answers
    ANSWER

    • Posted by Surjadeep Saha 5 years, 1 month ago

    CBSE > Class 08 > Science
    • 2 answers

    Surjadeep Saha 5 years, 1 month ago

    I will ask,what will happen,Nothing.

    0Thank You

    Bipan Kaur 5 years, 1 month ago

    Donot ask that questions

    0Thank You

    ANSWER

    • Posted by Neelesh Garje 5 years, 1 month ago

    CBSE > Class 08 > Science
    • 1 answers

    Gaurav Seth 5 years, 1 month ago

    Protozoa: These are unicellular microscopic organisms similar to animals that can move about to capture food and are heterotrophic in nature. They are mostly aquatic in nature. Amoeba, paramecium are some examples of protozoa.

    0Thank You

    ANSWER

    • Posted by Akash Chaudhary 5 years, 1 month ago

    CBSE > Class 08 > Science
    • 2 answers

    Akanshi Gupta 5 years, 1 month ago

    The 5 R's – reduce, reuse, recycle, recover and residual management.  Reduce, reuse, recycle, recover and residual management. – Five actions that can make your organization and you a better steward.

    0Thank You

    Yogita Ingle 5 years, 1 month ago

    The 5 R's – reduce, reuse, recycle, recover and residual management.  Reduce, reuse, recycle, recover and residual management. – Five actions that can make your organization and you a better steward.
    Reduce: Reducing waste is the most important thing we can do. By reducing waste, we avoid the unnecessary use of resources such as materials, energy and water. It means there is less waste to manage.

    Reuse: The next most important thing we can do is reuse waste material. That way it doesn't go in the rubbish and end up in the landfill. It also means you don't have to buy a new product. That saves you money and saves the energy and resources that would have been used to make the new product.

    Recycle: Recycling involves some form of reprocessing of waste materials to produce another product. For example, recycling plastic bottles to make buckets.

    Recover: This is the recovery of waste without any pre-processing. For example, waste oils that cannot be refined for reuse in vehicles can be burnt for energy recovery. Recovering the energy from waste oil reduces our dependence on coal and imported oil.

    Residual Management:This is the last option when waste cannot be used in any other way. Usually, this means sending rubbish to a landfill. Residual disposal of liquid waste is normally into a sewer or septic tank.

    It is very important to manage residual solid and liquid waste properly. Waste not disposed of correctly can cause damage to health and the environment.

    0Thank You

    ANSWER

    • Posted by Bhavya Shah 5 years, 1 month ago

    CBSE > Class 08 > Science
    • 2 answers

    Ayan Khan Khan 5 years, 1 month ago

    Nitrogen molecules are larger than water, oxygen and most other ,so they percolate through tyres more slowly . this mean tyres stay at a usable pressure longer .this is the main benifit that a cyclist will see. Nitrogen is less reactive than oxygen ,so your tubes will last a little longer

    1Thank You

    Gaurav Seth 5 years, 1 month ago

    Nitrogen molecules are larger than water, oxygen and most others, so they percolate through tyres more slowly. This means tyres stay at a usable pressure longer. This is the main benefit that a cyclist will see. Nitrogen is less reactive than oxygen, so your tubes will last a little longer.

    1Thank You

    ANSWER

    • Posted by Nibir Mahanta 5 years, 1 month ago

    CBSE > Class 08 > Science
    • 3 answers

    Ayan Khan Khan 5 years, 1 month ago

    Crop production is a method of replenishing the soil with nutrients and this is done by growing different crops alternatively. For example, growing legumes as fodder in season and wheat in the next season. It is important because it help in replenishing of soil with nitrogen Answer dekh Lena bro

    0Thank You

    Shreya S P 5 years, 1 month ago

    Crop rotation is a method of replenishing the soil with nutrients and this is done by growing different crops alternatively. For example, growing legumes as fodder in one season and wheat in the next season. It is important because it helps in replenishing of soil with nitrogen.

    0Thank You

    Meghna Thapar 5 years, 1 month ago

    The practice in which different types of crops (leguminous and non-leguminous) are grown alternately in the same field or soil is called crop rotation. In crop rotation, the cereal crops like wheat, maize, paddy and millet are grown with leguminous crops like pulses, beans, peas, etc. in the same field. When a cereal crop is grown first, it takes away a lot of nitrogen from the soil and makes it deficient. Leguminous crops are grown to enrich the soil with nitrogen and thus increase the fertility of the soil.

    0Thank You

    ANSWER

    • Posted by Nibir Mahanta 5 years, 1 month ago

    CBSE > Class 08 > Science
    • 1 answers

    Gaurav Seth 5 years, 1 month ago

    Fertilizers are chemical substances supplied to the crops to increase their productivity. These are used by the farmers daily to increase the crops yield. The fertilizers contain the essential nutrients required by the plants including nitrogen, potassium, and phosphorus.

    0Thank You

    ANSWER

    • Posted by Nibir Mahanta 5 years, 1 month ago

    CBSE > Class 08 > Science
    • 2 answers

    Shreya S P 5 years, 1 month ago

    a. Manure improves the water holding capacity of the soil. b. It improves the texture of the soil. c. It increases the number of friendly microbes.

    0Thank You

    Yogita Ingle 5 years, 1 month ago

    Manure is the decomposed form of dead plants and animals which is applied to the soil to increase the production. It is a natural form of fertilizer and is cost-effective. The human and animal excreta is also used as manure. The livestock manure is rich in nitrogen, phosphorus, and potassium.

    1Thank You

    ANSWER

    • Posted by Nibir Mahanta 5 years, 1 month ago

    CBSE > Class 08 > Science
    • 2 answers

    Shreya S P 5 years, 1 month ago

    Adding manure to soil to give nutrition to the crops is called manuring

    1Thank You

    Yogita Ingle 5 years, 1 month ago

    Adding manure in soil is called Manuring

    0Thank You

    ANSWER

    • Posted by Annu Meena 5 years, 1 month ago

    CBSE > Class 08 > Science
    • 4 answers

    Anamika Srivastava 5 years, 1 month ago

    What is double displacement reaction

    0Thank You

    Shreya S P 5 years, 1 month ago

    Describe briefly about animal husbandry? (3) Ans. a. Animal husbandry is the branch of agriculture concerned with animals that are raised for meat, fibre, milk, eggs, or other products. b. It includes day-to-day care, selective breeding and the raising of livestock, like plants, animals also provide us with large variety of food items for which they are reared domestically or commercially. c. They are provided with proper food, shelter and care, this is called animal husbandry. 7. Why do you think removal of weeds is essential? Write any one method to control weeds. (2 + 1) Ans. Removal of weeds is essential because they compete with the crops for water, nutrients and other basic necessities which affects the growth and results in low yield of crops. With the help of Khurpi, weeds are cut close to the ground from time to time. Another method is using weedicides like 2,4 D which helps to control weeds. 8. What is crop rotation? Why is it important? (2 + 1) Crop rotation is a method of replenishing the soil with nutrients and this is done by growing different crops alternatively. For example, growing legumes as fodder in one season and wheat in the next season. It is important because it helps in replenishing of soil with nitrogen. List the advantage of manure over fertilisers. Ans. a. Manure improves the water holding capacity of the soil. b. It improves the texture of the soil. c. It increases the number of friendly microbes. Define harvesting. Ans. Harvesting is the cutting of mature crop manually or by machines. Crops are harvested either by pulling out the crops from the field or cutting close from the ground. Harvesting in our country is either done by sickle or by a machine called harvester. Choose the odd one out and give reason for the same. moat, dhekli, sickle, rahat Ans. Sickle. Except sickle all are traditional methods of irrigation, whereas sickle is an instrument which is used for harvesting crops. Correct the following statements. a. Separation of grains from the chaff is called weeding. b. Manure is a man-made inorganic salt. Ans. a. Separation of grains from the chaff is called threshing/winnowing. b. Fertiliser is a man-made inorganic salt. www.vedantu.com

    0Thank You

    Shreya S P 5 years, 1 month ago

    Describe briefly about animal husbandry? (3) Ans. a. Animal husbandry is the branch of agriculture concerned with animals that are raised for meat, fibre, milk, eggs, or other products. b. It includes day-to-day care, selective breeding and the raising of livestock, like plants, animals also provide us with large variety of food items for which they are reared domestically or commercially. c. They are provided with proper food, shelter and care, this is called animal husbandry. 7. Why do you think removal of weeds is essential? Write any one method to control weeds. (2 + 1) Ans. Removal of weeds is essential because they compete with the crops for water, nutrients and other basic necessities which affects the growth and results in low yield of crops. With the help of Khurpi, weeds are cut close to the ground from time to time. Another method is using weedicides like 2,4 D which helps to control weeds. 8. What is crop rotation? Why is it important? (2 + 1) Crop rotation is a method of replenishing the soil with nutrients and this is done by growing different crops alternatively. For example, growing legumes as fodder in one season and wheat in the next season. It is important because it helps in replenishing of soil with nitrogen. 9. List the advantage of manure over fertilisers. (3) Ans. a. Manure improves the water holding capacity of the soil. b. It improves the texture of the soil. c. It increases the number of friendly microbes. 10. Define harvesting. (2) Ans. Harvesting is the cutting of mature crop manually or by machines. Crops are harvested either by pulling out the crops from the field or cutting close from the ground. Harvesting in our country is either done by sickle or by a machine called harvester. 11. Choose the odd one out and give reason for the same. (1 + 1) moat, dhekli, sickle, rahat Ans. Sickle. Except sickle all are traditional methods of irrigation, whereas sickle is an instrument which is used for harvesting crops. 12. Correct the following statements. (1 + 1) a. Separation of grains from the chaff is called weeding. b. Manure is a man-made inorganic salt. Ans. a. Separation of grains from the chaff is called threshing/winnowing. b. Fertiliser is a man-made inorganic salt.

    0Thank You

    Shreya S P 5 years, 1 month ago

    Give four examples of fertilizers. (2) Ans. Urea, ammonium sulphate, super phosphate, potash, NPK etc. What do you mean by the term irrigation? (2) Ans. The supply of water to crops at appropriate intervals is called irrigation. The time and frequency of irrigation varies from crop to crop, soil to soil and season to season. If a handful of seeds are given to you, how will you separate healthy seeds from damaged ones? (2) Ans. Take a beaker half filled with water and put some seeds into it and stir well, wait for some time. You will observe that some seeds sink in water while some seeds float on water, damaged seeds become hollow and lighter and thus they float on water.

    0Thank You

    ANSWER

    • Posted by Bramha Nand Dubey 5 years, 1 month ago

    CBSE > Class 08 > Science
    • 1 answers

    Meghna Thapar 5 years, 1 month ago

    The typical thunderstorm is 15 miles in diameter and lasts an average of 30 minutes. Thunderstorms happen in every state and every thunderstorm has lightning. Thunderstorms may occur singly, in clusters, or in lines. Some of the most severe occur when a single thunderstorm affects one location for an extended time. Thunderstorms are most likely in the spring and summer months and during the afternoon and evening hours, but they can occur year-round and at all hours. Along the Gulf Coast and across the southeastern and western states, most thunderstorms occur during the afternoon. Thunderstorms can bring heavy rains (which can cause flash flooding), strong winds, hail, lightning, and tornadoes. Severe thunderstorms can cause extensive damage to homes and property.

    0Thank You

    ANSWER

    • Posted by S. Yogeswar Rao S. Yogeswar Rao 5 years, 1 month ago

    CBSE > Class 08 > Science
    • 1 answers

    Gaurav Seth 5 years, 1 month ago

    Area of head=15cm×15cm
    =15/100m×15/100m
    =225/10power4
    225×10power-4

    1 atm=10power5 P

    P=Force/ Area
    10power5 pa=F/225×10power-4 m square
    F= 10power5 Pa ×225×10power-4 m square
    10power5 N/m square×225×10power-4 m square

    * m square will cut will m square
    225×10N
    F=2250 N

    0Thank You

    ANSWER

    • Posted by Twisha Mukherjee 5 years, 1 month ago

    CBSE > Class 08 > Science
    • 4 answers

    Gaming Champion 5 years, 1 month ago

    Shut up dumbo

    0Thank You

    Gaming Champion 5 years, 1 month ago

    Mellability is the physical proprerty(e.i which can be touched) of metals by which they can be beaten up into thin sheets. As you have also asked for a suitable example, the aluminium foil sheet that you usially see at you home is the best example of this.

    4Thank You

    Yash Kumar Srivastava 5 years, 1 month ago

    Ex. Like iron is beaten to make iron sheets.

    1Thank You

    Yash Kumar Srivastava 5 years, 1 month ago

    This is malleability not mellability. This is the physical properties of the metal in which metal is beaten to make a sheets.

    2Thank You

    ANSWER

    • Posted by Shreyas Patil 5 years, 1 month ago

    CBSE > Class 08 > Science
    • 2 answers

    Yash Kumar Srivastava 5 years, 1 month ago

    Sorry,Passes electricity not current.

    1Thank You

    Yash Kumar Srivastava 5 years, 1 month ago

    It is the physical properties of metal in which metal passes current or heat easily.

    1Thank You

    ANSWER

    • Posted by Shreyas Patil 5 years, 1 month ago

    CBSE > Class 08 > Science
    • 2 answers

    Yash Kumar Srivastava 5 years, 1 month ago

    1) Metalloids show the property of both metal and non-metal. Ex.Arsenic, selenium,etc. 2) Conductivity :- It is the physical properties of metal in which it allows to passes through Current or heat easily. Metal is good conductor of heat and electricity.

    1Thank You

    Shiya A Manaf 5 years, 1 month ago

    Metalloids usually look like metals but behave largely like nonmetals. Physically, they are shiny, brittle solids with intermediate to relatively good electrical conductivity and the electronic band structure of a semimetal or semiconductor. ... They can form alloys with metals.

    3Thank You

    ANSWER

    • Posted by Abhay Upreti 5 years, 1 month ago

    CBSE > Class 08 > Science
    • 2 answers

    Yash Kumar Srivastava 5 years, 1 month ago

    Decomposition is the process in which decomposer (Like:- Earthworm and Microscopic organisms) convert dead plant and animal in humus.

    1Thank You

    Shiya A Manaf 5 years, 1 month ago

    Decomposition is the process by which dead organic substances are broken down into simpler organic or inorganic matter such as carbon dioxide , water, simple sugars and mineral salts. .

    2Thank You

    ANSWER

    • Posted by Prince Yadav 5 years, 1 month ago

    CBSE > Class 08 > Science
    • 4 answers

    Yash Kumar Srivastava 5 years, 1 month ago

    IN Leguminous plant there is a bacteria (named:-Rhizobium) which is present in the plants root which fix the nitrogen from atmosphere.

    1Thank You

    Gaming Champion 5 years, 1 month ago

    Leguminous plants or legumes simply get nitrogen by rhizobium bacteria which converts nitrogen from gas form to liquid form

    0Thank You

    Shreyas Patil 5 years, 1 month ago

    Leguminous plants fix nitrogen with the help of rhizobium

    0Thank You

    Abhay Upreti 5 years, 1 month ago

    Leguminois plants have rizobium in their root nodules which convert atmospheric nitrogen into soluble form.

    0Thank You

    ANSWER

    • Posted by Abhinash Kumar 5 years, 1 month ago

    CBSE > Class 08 > Science
    • 2 answers

    Yash Kumar Srivastava 5 years, 1 month ago

    Microorganism :- It is the organism which is not seen in our naked eyes. It is seen by a device called Microscope.

    1Thank You

    Yogita Ingle 5 years, 1 month ago

    Microorganisms- A living organism that is very minute to be seen by the naked eye, especially a single celled organism, such as a bacterium is called microorganism. Microorganisms are classified into four major groups mainly bacteria, fungi, protozoa and some algae.

    1Thank You

    ANSWER

    • Posted by Shreyas Patil 5 years, 1 month ago

    CBSE > Class 08 > Science
    • 2 answers

    Yash Kumar Srivastava 5 years, 1 month ago

    NPK (Nitrogen-phosphorus-potassium) is the Fertilizer which non-metal.

    1Thank You

    Yogita Ingle 5 years, 1 month ago

     Non-metals like nitrogen and phosphorus are used in fertilisers for better plant growth.

    1Thank You

    ANSWER

    • Posted by Shreyas Patil 5 years, 1 month ago

    CBSE > Class 08 > Science
    • 2 answers

    Yash Kumar Srivastava 5 years, 1 month ago

    Yes, Oxygen is the non-metal which is essential for our life. During the inhalation the oxygen is come in our body by Nostrils.

    1Thank You

    Yogita Ingle 5 years, 1 month ago

    Oxygen is the nonmetal which is essential for maintaining life and is inhaled during breathing

    1Thank You

    ANSWER

    • Posted by Shreyas Patil 5 years, 1 month ago

    CBSE > Class 08 > Science
    • 2 answers

    Yash Kumar Srivastava 5 years, 1 month ago

    Graphite is the non-metal which is as well as good conductor of electricity.

    1Thank You

    Yogita Ingle 5 years, 1 month ago

    Graphite is good conductor of heat and electricity.

    1Thank You

    ANSWER

    • Posted by Shreyas Patil 5 years, 1 month ago

    CBSE > Class 08 > Science
    • 2 answers

    Yash Kumar Srivastava 5 years, 1 month ago

    There are 10 non-metal which is in solid form. Like,carbon,sulfur, iodine.

    1Thank You

    Shiya A Manaf 5 years, 1 month ago

    Iodine

    2Thank You

    ANSWER

    • Posted by Shreyas Patil 5 years, 1 month ago

    CBSE > Class 08 > Science
    • 1 answers

    Yogita Ingle 5 years, 1 month ago

    Bromine occurs in the state of liquid and hydrogen, nitrogen, oxygen, chlorine etc are found in gaseous forms.

    1Thank You

    ANSWER

    • Posted by Shreyas Patil 5 years, 1 month ago

    CBSE > Class 08 > Science
    • 5 answers

    Shivani Sharma😋🧟🙈 5 years, 1 month ago

    Bromine is right answer because mercury is a metal

    1Thank You

    Shiya A Manaf 5 years, 1 month ago

    Bromine

    1Thank You

    Shiya A Manaf 5 years, 1 month ago

    Actually the above mentioned answers are wrong because mercury is a metal

    1Thank You

    Rohit Sharma 5 years, 1 month ago

    Mercury

    1Thank You

    Veda Rane 5 years, 1 month ago

    Mercury

    1Thank You

    ANSWER

    • Posted by Shreyas Patil 5 years, 1 month ago

    CBSE > Class 08 > Science
    • 2 answers

    Yash Kumar Srivastava 5 years, 1 month ago

    Sodium and potassium

    1Thank You

    Yogita Ingle 5 years, 1 month ago

    In contrast, materials like coal and sulphur are soft and dull in appearance.

    1Thank You

    ANSWER

    • Posted by Shreyas Patil 5 years, 1 month ago

    CBSE > Class 08 > Science
    • 2 answers

    Yash Kumar Srivastava 5 years, 1 month ago

    Zinc is correct answer.

    1Thank You

    Yogita Ingle 5 years, 1 month ago

    One of the most important uses of zinc is its suitability to be used in Galvanization<wbr />.

    0Thank You

    ANSWER

    • Posted by Shreyas Patil 5 years, 1 month ago

    CBSE > Class 08 > Science
    • 1 answers

    Yash Kumar Srivastava 5 years, 1 month ago

    Correct answer is option no. 4)

    1Thank You

    ANSWER

    • Posted by Shreyas Patil 5 years, 1 month ago

    CBSE > Class 08 > Science
    • 2 answers

    Yash Kumar Srivastava 5 years, 1 month ago

    Yes your answer is right ,Yogita.

    0Thank You

    Yogita Ingle 5 years, 1 month ago

    The 4R means Reduce, Reuse, Recycle and Restore.

    (i) Reduce: We should reduce the use of non-biodegradable compounds that are harmful to us.

    Example: Instead of using polythene bags we should give preference to paper bags.

    (ii) Reuse: We should reuse the materials instead of dumping.

    Example: Plastic bags can be reused to make decorative things.

    (iii) Recycle: Non-biodegradable materials should be subjected to the recycling process.

    Example: Plastic materials.

    (iv) Recovery: If the waste remains after it is been reused and recycled, we can use it to generate energy at our waste-energy (EfW) plant. This is known as Recovery.

    0Thank You

    ANSWER

    • Posted by Shreyas Patil 5 years, 1 month ago

    CBSE > Class 08 > Science
    • 2 answers

    Yash Kumar Srivastava 5 years, 1 month ago

    Acrylic.

    1Thank You

    Yogita Ingle 5 years, 1 month ago

    Acrylic is known as artificial wool or synthetic wool because it resembles wool.

    0Thank You

    ANSWER

    • Posted by Nibir Mahanta 5 years, 1 month ago

    CBSE > Class 08 > Science
    • 1 answers

    Yash Kumar Srivastava 5 years, 1 month ago

    Yes this is rights.yogita

    1Thank You

    ANSWER

    myCBSEguide App

    myCBSEguide

    Trusted by 1 Crore+ Students

    Install Now

    Test Generator

    Test Generator

    Create papers online. It's FREE.

    Try Now

    CUET Mock Tests

    CUET Mock Tests

    75,000+ questions to practice only on myCBSEguide app

    Install Now
    Google Play

    Download myCBSEguide App

    All Courses

    Other Websites

    CBSE Courses

    Resources

    Corporate

    NCERT Solutions

    CBSE Sample Papers

    All Content and Intellectual Property is under Copyright Protection | myCBSEguide.com ©2007-2025