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Ask QuestionPosted by Harshit Raj 5 years, 1 month ago
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Posted by King Adithya H M... 5 years, 1 month ago
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Yogita Ingle 5 years, 1 month ago
A “Homogenous Society” is a society where most of the people talk the same language, share the same kind of ethnicity, cultural values, and religious beliefs and systems.
Posted by Fathima Shahana Shahana 5 years, 1 month ago
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Gaurav Seth 5 years, 1 month ago
To calculate the total cost we have to firstly calculate the total electricity amount consumer by the electric oven.
I= Power÷Voltage
=0.05÷2200 (500w=0.05Kw)
=1/440 A
Total consumed power:
Voltage×I×Time
=220×1/440×2
=1Kwh
Cost=1×60×5
=₹ 300(answer.)
Posted by Anshuman Sharan 5 years, 1 month ago
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Shalesh Kumar 5 years, 1 month ago
King Adithya H M... 5 years, 1 month ago
Meghna Thapar 5 years, 1 month ago
A hygroscopic substance is one that readily attracts water from its surroundings, through either absorption or adsorption. Examples include honey, glycerin, ethanol, methanol, concentrated sulfuric acid, and concentrated sodium hydroxide (lye). Hygroscopic means that the hair is porous, this means that if you go out in any sort of humid or damp weather the hair absorbs the moisture from the atmosphere. ... When this happens it is your hair changing from its beta to alpha state.
Posted by Satyam Rai 5 years, 1 month ago
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Posted by Tamanna 10Lily 30 5 years, 1 month ago
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Yogita Ingle 5 years, 1 month ago
Halogens are nonmetals. At room temperature, fluorine and chlorine are gases and bromine is a liquid. Iodine and astatine are solids. Halogens are very reactive, the reactivity decreases from fluorine to astatine. Halogens do not exist in the elemental form in nature. Astatine isotopes are radioactive with short half-lives.
The halogens are a group in the periodic table consisting of five chemically related elements flourine (F), chlorine (Cl), bromine (Br), iodine (I) and astatine (At).
Posted by Divyanshi Dhakad 5 years, 1 month ago
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Sia ? 4 years, 6 months ago
https://mycbseguide.com/course/cbse-class-10-science/1176/
Check imp. question in the chapters
Posted by Sanket Sundar 5 years, 1 month ago
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Yogita Ingle 5 years, 1 month ago
The mode of nutrition in Amoeba is holozoic.
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The various steps involved in the process of nutrition are:
Ingestion: Amoeba ingests food with the help of its finger-like extensions, called pseudopodia. When a food particle approaches Amoeba, it forms pseudopodia around it and forms a food vacuole inside the Amoeba.
Digestion: Various enzymes from the cytoplasm enter into the food vacuole and break them down into simple soluble molecules.
Absorption: The simple soluble food is absorbed by cytoplasm of Amoeba from food vacuoles through the process of diffusion.
Assimilation: Amoeba cell obtains energy from the absorbed food through respiration. This energy is utilised by Amoeba for its growth and repair of the body.
Egestion: When a considerable amount of undigested food gets collected inside Amoeba, its cell membrane ruptures and throws out the undigested food.
Posted by Asad Abdullah 5 years, 1 month ago
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King Adithya H M... 5 years, 1 month ago
Yogita Ingle 5 years, 1 month ago
- The ferrous sulphate crystals are light green in colour.
- The gas emitted has the characteristic odour of burning sulphur.
- On heating, the colour changes from light green to white.
- On further heating, the white substance changes to dark brown solid.
Rishu Barnwal 5 years, 1 month ago
Posted by Tania Singh 5 years, 1 month ago
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Satyam Rai 5 years, 1 month ago
Yogita Ingle 5 years, 1 month ago
Ozone layer depletion:
- Depletion in the ozone layer of the atmosphere is called ozone depletion.
- The ozone layer or the ozone shield called the ozonosphere is present in the stratosphere at an altitude of 23–25 km over the equator and at a slightly lower altitude of 11–16 km over the poles.
- The ozone layer functions as a shield against strong UV radiations and protects the Earth from these harmful radiations.
Posted by Anand Yadav 5 years, 1 month ago
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Shivam Kumar Abam Kumar 5 years, 1 month ago
Yogita Ingle 5 years, 1 month ago
A continuous and closed path of an electric current is called an electric circuit. An electric circuit consists of electric devices, source of electricity and wires that are connected with the help of a switch.
Posted by Yogendra Nagar 5 years, 1 month ago
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Posted by Divyanshi Dhakad 5 years, 1 month ago
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King Adithya H M... 5 years, 1 month ago
Posted by Ayushi Dixit 5 years, 1 month ago
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King Adithya H M... 5 years, 1 month ago
Yogita Ingle 5 years, 1 month ago
Food web is a network of food chains where all the chains are naturally interconnected.
Each organism is generally eaten by two or more kinds or organisms which are again eaten by several other organisms and so instead of straight line food chain, the series of organisms dependent on one another food can be shown by branched lines which is called as a food web.
Flow of energy in a food chain is unidirectional, once it reaches the next tropic level it does not come back again.
For example- energy which passes to the herbivores does not come back again to autotrophs.
Posted by Ayushi Dixit 5 years, 1 month ago
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Ritika Talwar 5 years, 1 month ago
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| Biotic Resources | Abiotic Resources |
|
Definition |
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| Biotic factors include all the living components present in an ecosystem | Abiotic factors refer to all the non-living, i.e. physical conditions and chemical factors that influence an ecosystem |
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Examples |
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| Examples of biotic resources include all flora and fauna | Examples of abiotic factors include sunlight, water, air, humidity, pH, temperature, salinity, precipitation, altitude, type of soil, minerals, wind, dissolved oxygen, mineral nutrients present in the soil, air and water, etc. |
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Dependence |
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| Biotic factors depend on abiotic factors for survival and reproduction | Abiotic factors are completely independent of biotic factors |
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Origin |
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| Biotic components originate from the biosphere | Abiotic components originate from the lithosphere, hydrosphere and atmosphere |
Posted by Ayushi Dixit 5 years, 1 month ago
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King Adithya H M... 5 years, 1 month ago
Aparna Kumari 5 years, 1 month ago
Yogita Ingle 5 years, 1 month ago
A biodegradable substance can be defined as a material which can be decomposed by microorganisms or decomposers and not be adding to any type of pollution. Waste that cannot be decomposed by the biological ways is called the Non-biodegradable wastes
Maahi Chawla 5 years, 1 month ago
Posted by Ayushi Dixit 5 years, 1 month ago
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King Adithya H M... 5 years, 1 month ago
Yogita Ingle 5 years, 1 month ago
| Biodegradable waste | Non-biodegradable waste |
| Those which can be easily degraded by the decomposers into substances that go into soil and are harmless to the environment. | Those which cannot be degraded by the decomposers and thus remain in the environment causing pollution. |
| They are natural wastes. | They are synthetic wastes. |
| Examples- vegetables wastes, animal excreta | Examples- plastic, polythene |
Posted by Ayushi Dixit 5 years, 1 month ago
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King Adithya H M... 5 years, 1 month ago
Yogita Ingle 5 years, 1 month ago
The trophic level is the position an organism occupies in the food chain. The first trophic level known as the base of the ecosystem has the highest energy concentration which is transferred to the organisms at different trophic levels. Following are the different levels of an ecosystem:
- Producers: Plants and other autotrophs are known as producers. They prepare their own food using sunlight and carbon dioxide by the process of photosynthesis. This energy is transferred to the organisms that feed on the producers.
- Primary Consumers: This is the second trophic level which includes all the herbivores. Animals such as cows, buffaloes, deer, few insects cannot prepare their food and rely on plants and natural products for nutrition.
- Secondary Consumers: A few organisms such as rats, foxes, fish belong to the third trophic level. These are secondary consumers and derive their nutrition from the primary consumers.
- Tertiary Consumers: This is the fourth trophic level that includes all the carnivores and omnivores.
- Apex Predators: This is the final trophic level of the ecosystem. The animals belonging to this trophic level have no predators of their own. Eagles, lions, anacondas, belong to this trophic level.
Posted by Ayushi Dixit 5 years, 1 month ago
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Yogita Ingle 5 years, 1 month ago
In atmosphere, some OXYGEN (O2) absorbed energy from ultraviolet (UV) ray and split to for single oxygen atoms. This oxygen combined with remaining oxygen and form ozone (O3) molecule.
Posted by Ayushi Dixit 5 years, 1 month ago
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Aparna Kumari 5 years, 1 month ago
Yogita Ingle 5 years, 1 month ago
In atmosphere, some OXYGEN (O2) absorbed energy from ultraviolet (UV) ray and split to for single oxygen atoms. This oxygen combined with remaining oxygen and form ozone (O3) molecule.
Posted by Ayushi Dixit 5 years, 1 month ago
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Yogita Ingle 5 years, 1 month ago
Following are some points that would help in preventing this problem at a global level:
Avoid Using Pesticides: Natural methods should be implemented to get rid of pests and weeds instead of using chemicals. One can use eco-friendly chemicals to remove the pests or remove the weeds manually.
Minimize the Use of Vehicles: The vehicles emit a large amount of greenhouse gases that lead to global warming as well as ozone depletion. Therefore, the use of vehicles should be minimized as much as possible.
Use Eco-friendly Cleaning Products: Most of the cleaning products have chlorine and bromine releasing chemicals that find a way into the atmosphere and affect the ozone layer. These should be substituted with natural products to protect the environment.
Use of Nitrous Oxide should be Prohibited: The government should take actions and prohibit the use of harmful nitrous oxide that is adversely affecting the ozone layer. People should be made aware of the harmful effects of nitrous oxide and the products emitting the gas so that its use is minimized at the individual level as well.
Posted by Maahi Chawla 5 years, 1 month ago
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Maahi Chawla 5 years, 1 month ago
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Maahi Chawla 5 years, 1 month ago
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Posted by Sumaila Ali Choudhary??? 5 years, 1 month ago
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Maahi Chawla 5 years, 1 month ago
Posted by Gaurav Singh 5 years, 1 month ago
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Tvisha Sanghvi 5 years, 1 month ago
Ritik Deepak 5 years, 1 month ago
Yogita Ingle 5 years, 1 month ago
Haemoglobin is present in red blood cells and they carry oxygen from lungs to other parts of our body, and also transportation of CO2 and H back to lungs.
Our most of the part of body iron is found in RBC's of our blood called haemoglobin and in muscles cells it's called myoglobin.
Haemoglobin has 4 polypeptide subunits, 2 alpha chains and 2 beta chains. It has 2 dimers which binds to oxygen.
Posted by Sajid Md 5 years, 1 month ago
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Tvisha Sanghvi 5 years, 1 month ago
Yogita Ingle 5 years, 1 month ago
Bifocals: A bifocal lens is created with two different areas of vision correction, which are divided by a distinct line that sits horizontally across the lens. The top portion of the lens is used for distance, while the bottom portion of the lens is used for closer vision.
King Adithya H M... 5 years, 1 month ago
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