Ask questions which are clear, concise and easy to understand.
Ask QuestionPosted by Radhika Sharma✌️✌️ 6 years, 8 months ago
- 2 answers
Yogita Ingle 6 years, 8 months ago
Displacement reaction is a reaction in which a more reactive element displaces a less reactive element from its compound
Ex: copper sulphate + Iron → Iron sulphate + copper
In the above reaction iron is more reactive than copper so iron replaces copper from copper sulphate.
Posted by Khadija Khalid 6 years, 8 months ago
- 1 answers
Posted by Karishma Bakshi 6 years, 8 months ago
- 1 answers
Yogita Ingle 6 years, 8 months ago
Microorganisms can prove very harmful to us, as they cause a number of diseases in human, plants and animals. Diseases in humans like common cold, tuberculosis, measles, chicken pox, polio, cholera, typhoid, hepatitis B, malaria, etc. are caused by microorganisms. Some serious diseases like anthrax is also caused in animals by the microbes. Microbes also cause diseases of plants like blights in potatoes, sugarcanes, oranges etc. They also reduce the yield. Microbes grow on food products and render them unfit for consumption. Consumption of such food causes food poisoning. Microbes also spoil clothing’s and leather products.
Posted by Vidya Sagar 6 years, 8 months ago
- 4 answers
Posted by Kartik R Creatives 6 years, 8 months ago
- 3 answers
Radhika Sharma✌️✌️ 6 years, 8 months ago
Yogita Ingle 6 years, 8 months ago
(i) Kharif Crops : The crops which are sown in the rainy season are called kharif crops. The rainy season in India is generally from June to September. Paddy, maize, soyabean, groundnut, cotton, etc., are kharif crops.
(ii) Rabi Crops : The crops grown in the winter season are called rabi crops. Their time period is generally from October to March. Examples of rabi crops are wheat, gram, pea, mustard and linseed.
Posted by Palak Pohane 6 years, 8 months ago
- 1 answers
Posted by Rakesh Kumar 6 years, 8 months ago
- 2 answers
Goyam Jain 6 years, 8 months ago
Posted by Rishabh Ranjan 6 years, 8 months ago
- 1 answers
Meghna Thapar 5 years, 6 months ago
Everything available in our environment which can be used to satisfy our needs, is called a resource. It should be technologically accessible, economically feasible and culturally acceptable. Only then, it can be termed as a 'Resource'. Examples: minerals, forests, fossil fuels etc. Resources are broadly classified into natural, human-made and human. Natural resources are those that are taken from nature. They are used without modifying them, i.e. in the same form as they exist in. Rivers, lakes, air, soils, minerals, trees, mountains, etc.
Posted by Sunhera Choudhary 6 years, 8 months ago
- 1 answers
Yogita Ingle 6 years, 8 months ago
Weeds can be removed by uprooting or cutting them close to the ground, from time to time. This is done with the help of a plough. Weeds can be removed by using weedicides. The process of removing the weeds from the crop field is called weeding.
Posted by Rakesh Kumar 6 years, 8 months ago
- 1 answers
Yogita Ingle 6 years, 8 months ago
The heart has four chambers: two atria and two ventricles. The right atrium receives oxygen-poor blood from the body and pumps it to the right ventricle.
Posted by Vipra Broliya 6 years, 8 months ago
- 2 answers
Goyam Jain 6 years, 8 months ago
Yogita Ingle 6 years, 8 months ago
- We can reduce the use of plastic bags and carry jute bags and paper bags to carry items from the market.
- We can reduce the use of plastic containers for the storing food and other items and use more durable materials like metal.
- We can avoid using takeaway food containers.
Posted by Rakesh Kumar 6 years, 8 months ago
- 3 answers
Yogita Ingle 6 years, 8 months ago
Liver is the largest gland in human body. It is also the largest (internal) organ in our body and can weigh up to 1.5-1.6 kg for a human adult.
Posted by Anish Jain 6 years, 8 months ago
- 1 answers
Posted by Aman Raj 6 years, 8 months ago
- 1 answers
Radhika Sharma✌️✌️ 6 years, 8 months ago
Posted by Divy Jain 6 years, 8 months ago
- 1 answers
Yogita Ingle 6 years, 8 months ago
Algae: Algae are green plants which are simple in structure. A cell of algae contains cell wall and chloroplast. Algae are autotrophs. Some algae are microscopic. Examples: Chlamydomonas, Spirogyra, etc.
Antibiotic: A substance which kills or stops the growth of bacteria is called antibiotic. Alexander Fleming discovered the antibiotic Penicillin in 1929.
Posted by Paramraj Singh 6 years, 8 months ago
- 2 answers
Yogita Ingle 6 years, 8 months ago
Manure is a natural or an organic substance obtained by the decomposition of plant and animal wastes. This is done by microbes, earthworms, fungus etc. Manure provides a lot of organic matter to the soil. It is slowly absorbed by the plants.
Paramraj Singh 6 years, 8 months ago
Posted by Raman Raman 6 years, 8 months ago
- 1 answers
Naveen Kumar 6 years, 8 months ago
Posted by Samyak Jain 6 years, 8 months ago
- 1 answers
Meghna Thapar 5 years, 6 months ago
Season and nature of the soil.
Explanation:
Season: the frequency of the soil depends much on the season. For instance, the frequency of irrigation of crop in the summer season increases as the rate of evaporation from leaves and soil become higher and in the winters the frequency of soil gets a decrease due to a lower rate of evaporation.
Nature of the soil: another important factor on which time and frequency of irrigation depend is thee nature of the soil. For instance, if the water retaining capacity is higher then there is no requirement for irrigating the soil many times as the soil possess the capacity of holding water for a long time.
Posted by Tanish Gupta 6 years, 8 months ago
- 1 answers
Naveen Kumar 6 years, 8 months ago
Posted by Ãđïťýã Ãñãñđ 6 years, 8 months ago
- 1 answers
Vipra Broliya 6 years, 8 months ago
Posted by Sanjay Kumar 6 years, 8 months ago
- 1 answers
Meghna Thapar 5 years, 6 months ago
Milk, meat and eggs are the food products we get from animals. Animal products are rich in vitamins and proteins. Though pulses, whole wheat, corn, and so on, also give us proteins, proteins derived from animals are considered to be better than those from plant sources. Dairy cows are another type of cattle that provide us with nutritional products. There are many different dairy products but some you might be most familiar with include milk, cheese, yogurt, butter and ice cream. Other dairy products include sour cream, cottage cheese, whey, cream cheese and condensed milk.
Posted by Amal Naha 6 years, 8 months ago
- 1 answers
Meghna Thapar 5 years, 10 months ago
Microorganisms like bacteria are single cellular whereas some algae and fungi are multicellular. They are found in all types of habitats. They can live and survive in almost all kinds of environment like hot springs, ice-cold waters, saline water, desert soil or marshy land. Microorganisms can be present inside the human body or that of animals as parasites.
If we take a few drops of pond water on a slide and observe under a microscope, we can see many tiny organisms moving around. Microorganisms are also found in the soil. If we take a moist soil sample and add water to it and let it settle down for some time, and observe a drop of water from the beaker under a microscope, we see microorganisms moving around.
Posted by Noor Sohal 6 years, 8 months ago
- 1 answers
Yogita Ingle 6 years, 8 months ago
Pulmonary artery arises from right ventricle of heart. Right ventricle in turn receives blood from right atrium. Right atrium receives deoxygenated blood from all over the body through superior vena cava, inferior vena cava and coronary sinus.
So, pulmonary artery receives deoxygenated blood from right side of heart. This is nature's design that this blood enters lungs for unloading of carbondioxide and subsequent loading of oxygen can take place.
Posted by Bhavika Singla 6 years, 8 months ago
- 1 answers
Meghna Thapar 5 years, 10 months ago
Differences between an animal cell and a plant cell:
|
Animal Cell |
Plant Cell |
|
i. Animal cells are generally small in size. ii. Cell wall is absent.
iii. Animal cells have a single highly complex and prominent Golgi apparatus.
iv. Animals cells have centrosome and centrioles. |
i. Plant cells are larger than animal cells. ii. The plasma membrane of plant cell is surrounded by a rigid cell wall of cellulose. iii. Plant cells have many simpler units of Golgi apparatus, called dictyosomes. iv. Plant cells lack centrosome and centrioles. |
Posted by Bhumi Agarwal 6 years, 8 months ago
- 1 answers
Meghna Thapar 5 years, 10 months ago
Organic farming is a farming system with minimal or no use of chemicals as fertilizers, pesticides etc. and with a maximum input of organic manures, recycled farm-wastes, along with use of bio-agents and healthy cropping systems.
Posted by Dhaneshwari Devi 6 years, 8 months ago
- 1 answers
Posted by Samu Raut 6 years, 8 months ago
- 1 answers
Anish Jain 6 years, 8 months ago
Posted by Maninder Dhillon 6 years, 8 months ago
- 1 answers
Yogita Ingle 6 years, 8 months 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.
Manure is highly rich in organic matter and humus and thus improves the soil fertility. These are better in the long run and does not cause any pollution. It is a valuable and renewable resource.
Posted by Abhay Singh 6 years, 8 months ago
- 1 answers
myCBSEguide
Trusted by 1 Crore+ Students
Test Generator
Create papers online. It's FREE.
CUET Mock Tests
75,000+ questions to practice only on myCBSEguide app
Goyam Jain 6 years, 8 months ago
1Thank You