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Ask QuestionPosted by Srishti Raghav 5 years, 3 months ago
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Sukhman Kaur 5 years, 3 months ago
Yogita Ingle 5 years, 3 months ago
Food preservation is one of the methods to protect food from unwanted microbial growth. After the food is produced, we store and protect by covering the rice and curry with lids to keep away flies and other insects. By this, we are protecting it from any infection caused by them. This is a short-term condition. Food preservation, on the other hand, is done to preserve food for a longer time.
Posted by Mahek Patel 5 years, 3 months ago
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Shital Kumari 5 years, 3 months ago
Posted by Ananya Dutt 5 years, 3 months ago
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Vindhyavasini Tripathi 5 years, 3 months ago
Shital Kumari 5 years, 3 months ago
Posted by Divyanshu Karn 5 years, 3 months ago
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Sukhman Kaur 5 years, 3 months ago
Sonali Mahanta 5 years, 3 months ago
Posted by Arhat Nirgule 5 years, 3 months ago
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Posted by Kashvi Jaiswal 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
Disadvantages of fossil fuels:
- They are a finite resource.
- They combust to create an acidic environment.
- They can damage the environment through human error.
- They may contribute to public health issues.
- They can be dangerous to harvest.
Posted by Saumya Kumar 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
Majority elements in the periodic table are metals. This includes alkali metals, transition metals, lanthanides, actinides, and alkaline earth metals. Metals are separated by nonmetals on a periodic table through a zigzag line starting from carbon, till radon. The elements between the two are phosphorus, selenium, and iodine.
Physical Properties of Metals
Some of the physical properties of metals are listed below.
- Shiny (lustrous) in nature
- Metal is a good conductor of electricity and heat
- Density and melting point is high
- Mouldable (Malleable)
- Ductile
- At room temperature, it is in solid form except for mercury
- Opaque
Posted by Mahender Bisht 5 years, 3 months ago
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Posted by Kashvi Jaiswal 5 years, 3 months ago
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Jaiyansh Dhaulakhandi 5 years, 3 months ago
Yogita Ingle 5 years, 3 months ago
About 70% of the Indian population practices agriculture. Hence, the production and management of crops is an important aspect to ensure optimal productivity in the fields. The major agricultural practices involved in crop production and management are listed below:
- Preparation of Soil
- Sowing of Seeds
- Addition of Manure and Fertilizers
- Irrigation
- Protection from Weeds
- Harvesting
- Storage
Posted by Harshita Singh 5 years, 3 months ago
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Rishi Agrawal 5 years, 3 months ago
Yogita Ingle 5 years, 3 months ago
Typhoid and tuberculosis (TB) are caused by bacterial diseases.
Posted by Sagar Panigrahi 5 years, 3 months ago
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Jaiyansh Dhaulakhandi 5 years, 3 months ago
Jaiyansh Dhaulakhandi 5 years, 3 months ago
Posted by Sagar Panigrahi 5 years, 3 months ago
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Meghna Thapar 5 years, 3 months ago
Fibre is the material or the ingredient that goes into making fabric. Thus cotton fiber is used to make cotton fabric. ... On the other hand, fibre is obtained from natural sources such as plants and animals or it could be synthetic, having been made in factories.
Posted by Piyush Punera 5 years, 3 months ago
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Shubham Srivastava 5 years, 3 months ago
Posted by Ashwini Gaikwad 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
| Bacteria | Viruses |
| Bacteria have a lipopolysaccharide or Peptidoglycan-based cell wall | The cell wall is absent in virus. Instead, a capsid (protein coat) is present. |
| Bacteria are generally larger. Size ranges between 900 – 1000nm | Virus are generally smaller. Size ranges between 30-50nm |
| Bacteria are classified as living organisms | Virus are neither living nor non-living |
| Example: Vibrio cholerae, Staphylococcus aureus | Example: Hepatitis A virus, HIV, Rhinovirus |
Posted by Kashvi Jaiswal 5 years, 3 months ago
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Posted by Kashvi Jaiswal 5 years, 3 months ago
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Alisha Gupta 5 years, 3 months ago
Posted by Kashvi Jaiswal 5 years, 3 months ago
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Alisha Gupta 5 years, 3 months ago
Posted by Raj Shekhar Singh 5 years, 3 months ago
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Posted by Aayush Mehera 5 years, 3 months ago
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Aurora A 5 years, 3 months ago
Posted by Kashvi Jaiswal 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
Coal and petroleum are formed as a result of degradation of ancient plant life which lived millions of years ago. These dead plant matter started to pile up, eventually forming a substance called peat. Over time, heat and pressure from geological processes transformed these materials into coal. Since these are formed from essentially fossils, they are also known as fossil fuels.
Posted by Animesh Pal 5 years, 3 months ago
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Minakshi Urf Minu 5 years, 3 months ago
Posted by Vindhyavasini Tripathi 5 years, 3 months ago
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Satyarth Sharma 5 years, 3 months ago
Prangya Dalai 5 years, 3 months ago
Yogita Ingle 5 years, 3 months ago
The Kharif cropping season starts with the onset of monsoon and ends when the rainy season is over. The rabi crops are sown at the end of monsoon and harvested before the advent of the summer season. These crops require good rainfall. The output of these crops depends upon the time and amount of rainwater. Paddy, maize, bajra, jowar are a few Kharif crops grown in India.
Posted by Rahul Kumar 5 years, 3 months ago
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Posted by Sarswati Bhandari 5 years, 3 months ago
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Satyarth Sharma 5 years, 3 months ago
Vindhyavasini Tripathi 5 years, 3 months ago
Yogita Ingle 5 years, 3 months ago
Nitrogen fixation is the essential biological process and the initial stage of the nitrogen cycle. In this process, nitrogen in the atmosphere is converted into ammonia (another form of nitrogen) by certain bacterial species like Rhizobium, Azotobacter, etc. and by other natural phenomena.
Plants are the main of the sources of food. The nutrients obtained from plants are synthesized by plants using various elements which they obtain from the atmosphere as well as from the soil. This group of elements includes nitrogen as well. Plants obtain nitrogen from the soil through the process of protein synthesis. Unlike carbon dioxide and oxygen, atmospheric nitrogen cannot be obtained through stomata of leaves. Because the concentration of nitrogen gas present in the atmosphere can not be directly used by plants and also the concentration of the usable form of nitrogen in the atmosphere is very less. There are certain bacteria and some natural phenomenon which help in Nitrogen fixation.
Posted by Kashvi Jaiswal 5 years, 3 months ago
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Vansh Raheja 5 years, 3 months ago
Posted by Laitonjam Dhruv 5 years, 3 months ago
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Sonali Mahanta 5 years, 3 months ago
Posted by Sujal Kubde 5 years, 3 months ago
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Sonali Mahanta 5 years, 3 months ago
Yogita Ingle 5 years, 3 months ago
Kharif crops are the crops that are grown with the arrival of monsoon in different parts of the country and are harvested in September-October.
Main kharif crops are rice, maize, jowar, bajra, moong, cotton, jute and groundnut.
Posted by Ayush Kumar 5 years, 3 months ago
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Vindhyavasini Tripathi 5 years, 3 months ago
Yogita Ingle 5 years, 3 months ago
Pollination is a method where pollen grains are picked from an anther, which is the male part of a flower and transferred to the flower’s female part called the stigma. To make the pollination work successfully, the pollen grains must be transferred from the same species of flower.
Posted by Tapan Sinha 5 years, 3 months ago
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Meghna Thapar 5 years, 3 months ago
Metals react with acids to form salt and hydrogen gas.
Metal + Dilute acid → Salt + Hydrogen
Metals react with dilute hydrochloric acid to give metal chloride and hydrogen gas. Example - Magnesium reacts violently with dilute hydrochloric acid to form magnesium chloride and hydrogen.
Metals react with water to produce metal oxides with the release of hydrogen gas. But all metals do not react with water.
Metal + Water → Metal oxide + Hydrogen
Metal oxides that are soluble in water dissolve in it to further form metal hydroxide.
Metal oxide + Water → Metal hydroxide
Metals such as sodium and potassium react vigorously with cold water to lead to evolution of hydrogen, which immediately catches fire producing a large quantity of heat.
Meghna Thapar 5 years, 3 months ago
Metals react with acids to form salt and hydrogen gas.
Metal + Dilute acid → Salt + Hydrogen
Metals react with dilute hydrochloric acid to give metal chloride and hydrogen gas. Example - Magnesium reacts violently with dilute hydrochloric acid to form magnesium chloride and hydrogen.
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Kashvi Jaiswal 5 years, 3 months ago
1Thank You