Ask questions which are clear, concise and easy to understand.
Ask QuestionPosted by Vaibhav (Silent Love)?? Avi 270505??? 5 years, 9 months ago
- 5 answers
Posted by Sana(Silent Love).. ?? 5 years, 9 months ago
- 5 answers
Sana(Silent Love).. ?? 5 years, 9 months ago
Vaibhav (Silent Love)?? Avi 270505??? 5 years, 9 months ago
Posted by Shakshi Kumari 5 years, 9 months ago
- 0 answers
Posted by Praveen Kumar Mahto 5 years, 9 months ago
- 1 answers
Yogita Ingle 5 years, 9 months ago
We are given a = 17, d = -2, Sn = 72 and we have to find n.
Using Sn = n[2a +(n -1)d]/2, we get
72 = n[2.17 +(n -1)(-2)]/2 = n(36 -2n)/2 = n(18 -n)
=> n² -18n +72 = 0 => (n -6)(n -12) = 0
=> n = 6, 12
Both values of n, being positive integers are valid. We get double answer because sum of 7th to 12th terms is zero, as some terms are positive and some are negative.
Posted by Vaibhav (Silent Love)?? Avi 270505??? 5 years, 9 months ago
- 5 answers
Posted by Suhas . 5 years, 9 months ago
- 1 answers
Yogita Ingle 5 years, 9 months ago
Respiratory system in human beings:
The respiratory system in human beings consists of the nose, pharynx, larynx, trachea, bronchi and lungs.
- Air is taken in through the nostrils.
- Nostrils further continue into the nasal cavity.
- There is a bony plate called the palate, which separates the oral cavity from the nasal cavity.
- Nasal cavity opens into the pharynx.
- The pharynx is a muscular chamber acting as a common passage for the windpipe or trachea and the food pipe or oesophagus.
- It is connected to the larynx through a slit-like opening called the glottis.
- The larynx connects the pharynx to the trachea.
- The trachea shows the presence of cartilaginous rings.
- The cartilaginous rings provide flexibility thus, facilitating continuous air flow.
- The inner wall of the trachea is lined by a mucous membrane consisting of ciliated columnar epithelium.
- The trachea divides into two branches or tubes called bronchi, one of which enters the right lung and the other enters the left lung.
- The bronchi have cartilaginous rings for distention.
- Each bronchus divides into fine secondary bronchi. These bronchi further divide into finer tertiary bronchi. In the lungs, each bronchus finally divides into finer and smaller branches called bronchioles.
- The bronchioles further divide to form smaller terminal bronchioles.
- The bronchioles divide repeatedly to form a cluster of tiny air chambers called air sacs or alveoli.
- Alveoli have thin and moist walls which enable gaseous diffusion with blood capillaries.
- The lungs are a pair of spongy and elastic respiratory organs protected by a bony rib cage.
- The base of the lungs rests on the diaphragm.
- Each lung is covered by two membranes. The inner membrane is called the inner or visceral pleura and the outer membrane is called the outer or parietal pleura.
- The diaphragm is a curved, musculo-fibrous sheath which separates the thoracic cavity from the abdominal cavity.
- The diaphragm plays a major role during respiration.
Posted by Shah Vikas 5 years, 8 months ago
- 0 answers
Posted by Vaibhav (Silent Love)?? Avi 270505??? 5 years, 9 months ago
- 1 answers
Posted by Vaibhav (Silent Love)?? Avi 270505??? 5 years, 9 months ago
- 5 answers
Vaibhav (Silent Love)?? Avi 270505??? 5 years, 9 months ago
Sana(Silent Love).. ?? 5 years, 9 months ago
Posted by Meenakshee Kesavan 5 years, 9 months ago
- 1 answers
Yogita Ingle 5 years, 9 months ago
Arid soil- This type of soil is sandy and saline and is found in arid regions, particularly deserts. The soil lacks humus and moisture due to dry climate and rapid evaporation. The calcium content in this type of soil increases downwards.
Forest soil- It is rich in dead organic matter and humus content caused by their decomposition. Thus, the soil is rich in nutrients.
Posted by Vaibhav (Silent Love)?? Avi 270505??? 5 years, 9 months ago
- 1 answers
Posted by Sunil Kumar 5 years, 9 months ago
- 1 answers
Yogita Ingle 5 years, 9 months ago
The high pressure causes the liquid part of blood to filter out from glomerulus into the renal tube .Glomerular filtrate consists of water, urea, salts, glucose and other plasma solutes. Blood corpuscles, proteins and other large molecules remain behind in the glomerulus.
Posted by Manmohan Sahu 5 years, 9 months ago
- 1 answers
Posted by Sana(Silent Love).. ?? 5 years, 9 months ago
- 2 answers
Posted by Anushka ?? 5 years, 9 months ago
- 4 answers
Posted by Suryansh Singh 5 years, 9 months ago
- 2 answers
Posted by Anushka ?? 5 years, 9 months ago
- 5 answers
Miss__ Thakur 5 years, 9 months ago
Posted by Anushka ?? 5 years, 9 months ago
- 5 answers
Posted by Sana(Silent Love).. ?? 5 years, 9 months ago
- 3 answers
Drift? Boi? 5 years, 9 months ago
Posted by Royal Raunak 5 years, 8 months ago
- 0 answers
Posted by Ishika ? 5 years, 9 months ago
- 3 answers
Mahi....... . 5 years, 9 months ago
Posted by Channabasappa S K 5 years, 9 months ago
- 3 answers
Yogita Ingle 5 years, 9 months ago
Rancidity: It is defined as chemical decomposition of oils and fats which in another words is spoiling food materials that difficult for consumption.
It can be prevented by following methods:
(i) The packing of food materials should be replaced the air with Nitrogen.
(ii) The food materials should be placed at very low temperatures.
(iii) Addition of antioxidants also prevents rancidity process.
Gaurav Seth 5 years, 9 months ago
Oxidation of food resulting in bad taste and bad smell is known as rancidity.
Ways to prevent rancidity are :
1)by adding antioxidants .
2)by refrigerating the food items.
3)by flushing the food with nitrogen gas.
4)by using air tight containers.
5)by vacuum packing.
Gaurav Seth 5 years, 9 months ago
Rancidity: It is defined as chemical decomposition of oils and fats which in another words is spoiling food materials that difficult for consumption.
It can be prevented by following methods:
(i) The packing of food materials should be replaced the air with Nitrogen.
(ii) The food materials should be placed at very low temperatures.
(iii) Addition of antioxidants also prevents rancidity process.
Posted by ?Rahul ? 5 years, 9 months ago
- 5 answers
Sana(Silent Love).. ?? 5 years, 9 months ago
Posted by Shriya Samaga 5 years, 9 months ago
- 1 answers
Yogita Ingle 5 years, 9 months ago
The resistance of the wire will increase if we made the conductor thinner because R (resistance) = p (rho). l (length) / A (area of cross-section or thickness of wire).
Area is directly proportional to the radius of the wire.
So as you can see if area of cross-section ( or thickness) of wire increases, resistance decreases and more current flows through it.
Posted by ?Rahul ? 5 years, 9 months ago
- 5 answers
Drift? Boi? 5 years, 9 months ago
Posted by Ashwini Kajava 5 years, 9 months ago
- 1 answers
Posted by Pooja Singh 5 years, 9 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
Vaibhav (Silent Love)?? Avi 270505??? 5 years, 9 months ago
0Thank You