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Ask QuestionPosted by Good Student 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
There should be equitable distribution of resources among all people—rich and poor, so that all are benefitted from the development of these resources. Such an even distribution of resources restricts the exploitation, wastage and misuse of these resources. The poor will also get a chance to make benefit for himself and the society will improve. Unfortunately, it has been deserved that mainly the rich and the powerful take the full advantage of these resources and the poor are devoid of its pleasure. Thus, rich and powerful people for their personal benefit work against the equitable distribution.
Sawan Goja 5 years, 3 months ago
Posted by Good Student 5 years, 3 months ago
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Meghna Thapar 5 years, 2 months ago
Exclusive distribution means that your audiobook will only be available on Audible’s channels, which currently include Audible, Amazon and iTunes. You are not permitted to distribute or sell your audiobook in any other format on any site or store outside of Amazon, Audible, and iTunes. Audiobooks published distributed exclusively earn a 40% royalty.
If you choose non-exclusive distribution, you are able to also sell and distribute your completed audiobook through other distributors, such as on CD or other physical formats wherever you choose. Non-exclusive projects may not be published as a Royalty Share project, and must be completed as a Pay-for-Production or uploaded directly to ACX. Audiobooks distributed non-exclusively through ACX earn a 25% royalty.
Posted by Robins Kumar 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
Plane mirrors and convex mirrors only produce virtual images.
Prothom Bose 5 years, 3 months ago
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Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 3 months ago
Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 3 months ago
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Vaishnavi Kanojia 5 years, 3 months ago
Posted by Maahi ......♾ 5 years, 3 months ago
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Posted by Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 3 months ago
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Gaurav Seth 5 years, 3 months ago
DOUBLE CIRCULATION
- There are four chambers in the heart totally. when all the chambers are in a relaxed(joint diastole) the pulmonary vein brings in the oxygenated blood to the left atrium.Tje tricuspid and the bicuspid valves open to push the blood to the ventricle.
- Now the left atrium is filled oxygenated blood.When the left atrium contracts the Oxygenated blood is pushed to the left ventricle of the heart.At this point the ventricle will be in relaxed stage known as "ventricle diastole".The SA node creates impulses which is received by AV.
-when the ventricle contracts( ventricle systole) the blood moves to main artery known as the aorta.This blood is distributed to all body organs .
-The blood loses oxygen when it produces for all the organs ie, it has been deoygenated.the deoxygenated blood enters through the main vein termed as Vena Cava.It brings in deoxygenated blood to right atrium.when right atrium contracts the blood is pushed to the right ventricle.
-And when the right ventricle contracts the blood is pushed to the lungs through pulmonary artery.
- A circulatory system where the blood enters the heart twice in one complete cycle is called "double circulation".ex:- human beings.
Posted by Anshuman Singh Rajvi 5 years, 3 months ago
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Posted by Keerthika Dhanam 5 years, 3 months ago
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A S 5 years, 3 months ago
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Posted by Subaasri Kalaiyarasan 5 years, 3 months ago
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Gaurav Seth 5 years, 3 months ago
Gas is evolved vigorously in the beaker 1 with HCL and not in beaker 2 with NaOH. This is because zinc reacts very fast with the HCL and very slowly with the NaOH at room temperature.
Sachin Pandey 5 years, 3 months ago
Posted by Shubham Saxena ???? 5 years, 3 months ago
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Prabal Das 5 years, 3 months ago
Priya Yadav 5 years, 3 months ago
Posted by Risha Singh 5 years, 3 months ago
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Shubham Saxena ???? 5 years, 3 months ago
Yogita Ingle 5 years, 3 months ago
Respiratory System Parts and Functions
Let us have a detailed look at the different parts of the respiratory system and their functions.
Nose:The nose possesses a couple of exterior nostrils, which are divided by a framework of cartilaginous structure termed as the septum. This is the structure that evenly separates the right nostril from the left nostril. Tiny hair follicles that cover the interior lining of nostrils acts as the body’s first line of defence against foreign pathogens. Furthermore, they provide additional humidity for inhaled air.
Larynx:Two cartilaginous chords lay the framework for the larynx. They are situated at the point of joining the pharynx and trachea. It is also termed as Adam’s apple or the voice box. It is the portion which rises and falls during swallowing of food particles. It generates sound as air passes through the hollow in the middle.
Pharynx:The nasal chambers open up into a wide hollow space termed as the pharynx. It is a common path for both air and food. It functions by preventing the entry of food particles into the windpipe. The epiglottis is an elastic cartilage, which serves as a switch between the larynx and the oesophagus by allowing the passage of air into the airway to the lungs, and food in the gastrointestinal tract.
Trachea:The trachea or the windpipe rises below the larynx and moves down to the neck. The walls of trachea comprise C-shaped cartilaginous rings which give hardness to the trachea and maintain it by completely expanding. The trachea extends further down into the breastbone and splits into two bronchi, one for each lung.
Bronchi:The trachea splits into two tubes termed as bronchi, which enter each lung individually. The bronchi divide into secondary, tertiary, and to bronchioles, which is again further divided into small air-sacs called the alveoli. The alveoli are minute sacs of air with thin walls and single-celled manner. It enables the exchange of oxygen and carbon dioxide molecules into or away from the bloodstream.
Lungs: Lungs are the chief centres of the respiration in humans and other vertebrates. They are located in the thoracic cavity of the chest near the backbone and on either side of the heart. They are the pair of large, spongy organs, mainly involved in the exchange of gases between the blood and the air. Compared to the left lung, the right lung is quite bigger and heavier.
Posted by Dhruvi Modha 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
DNA copying is an essential part of the process of reproduction because it carries the genetic information from the parents to offspring. A copy of DNA is produced through some chemical reactions resulting in two copies of DNA. Along with the additional cellular structure, DNA copying also takes place which is then followed by cell division into two cells.
Posted by Shudanshu Bora 5 years, 3 months ago
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Posted by Soheb Akhtar 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
Calcium oxide or lime is prepared by the process called calcination. Calcium carbonate or Limestone is heated to a temperature between 1250 ⁰C and 1400 ⁰C in Kilns (oven) and it decomposes to quicklime and carbon dioxide.
Posted by Subaasri Kalaiyarasan 5 years, 3 months ago
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Sminu Saji 5 years, 3 months ago
Yogita Ingle 5 years, 3 months ago
Clear, colorless limewater absorbs carbon dioxide readily from air, giving a milky solution. This is due to the insoluble suspension of calcium carbonate formed:
Ca(OH)2(aq) + CO2(g) → CaCO3(s) + H2O(l)
If excess CO2 is added, the following reaction takes place:
CaCO3(s) + H2O(l) + CO2(g) → Ca(HCO3)2(aq)
Shudanshu Bora 5 years, 3 months ago
Shabeena Shahid 5 years, 3 months ago
Posted by Ak18 Ak18 5 years, 3 months ago
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Vaishnavi Kanojia 5 years, 3 months ago
Posted by Rohit Rathod 5 years, 3 months ago
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Posted by Kanchan Agrawal 5 years, 3 months ago
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Meghna Thapar 5 years, 2 months ago
(a) Bleaching powder is Calcium oxychloride (CaOCl2). It is prepared by passing chlorine gas over dry slaked lime.
Reaction: Ca(OH)2+Cl2→CaOCl2+H2O
(b) When bleaching powder reacts with dilute sulphuric acid, it produces chlorine gas.
Reaction: CaOCl2+H2SO4→CaSO4+Cl2(g)+H2O(l)
(c) Two important uses of bleaching powder are-
(i) It is used for disinfecting the drinking water supply.
(ii) It is used in the manufacture of chloroform.
Posted by Saleel Nayak 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
Cinnabar also known as HgS is termed as the mercury ore.
Mercury can be obtained from cinnabar by heating the cinnabar ore in a current of air and condensing the mercury vapour formed. Due to its relatively low boiling point mercury can be easily purified by vacuum distillation. The reaction of mercury sulphide with oxygen is shown below:
HgS + O2 → Hg + SO2
This process is also called Roasting. However Mercury can be obtained from other reactions too. For ex:
HgS + Fe → Hg + FeS
4HgS + 3 CaO → 4Hg + 3CaS + CaSO4
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Yogita Ingle 5 years, 3 months ago
A group of organic compounds which can be represented by the same general formula with a same functional group and which show more or less similar trends in their properties is known as homologous series.
Example: The homologous series of straight chain alkanes can be represented by the general formula CnH2n+2
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