Ask questions which are clear, concise and easy to understand.
Ask QuestionPosted by Yash Jaiswal????? 5 years, 5 months ago
- 5 answers
Yash Jaiswal????? 5 years, 5 months ago
Posted by Vanshika Baliyan 5 years, 5 months ago
- 5 answers
Posted by Chandresh Tiwari 5 years, 5 months ago
- 1 answers
Yogita Ingle 5 years, 5 months ago
A neutralization reaction is when an acid and a base react to form water and salt and involves the combination of hydrogen ions and hydroxyl ions to generate water. The neutralization of a strong acid and strong base has a pH equal to 7.
Example – : When Sodium hydroxide is added to hydrochloric acid. Sodium chloride and water are formed.
NaOH+HCl⟶NaCl+H2O
Posted by Vikshit Kumar 5 years, 4 months ago
- 5 answers
Vikshit Kumar 5 years, 5 months ago
Yash Jaiswal????? 5 years, 5 months ago
Shubham Jha 5 years, 5 months ago
Shubham Jha 5 years, 5 months ago
Posted by Nitin Nigam 5 years, 5 months ago
- 1 answers
Posted by Hitain Rajput 5 years, 5 months ago
- 1 answers
Posted by Bittu Pundir 5 years, 5 months ago
- 2 answers
Vikshit Kumar 5 years, 5 months ago
Navdeep Tondwal 5 years, 5 months ago
Posted by Lucifer?? Morningstar?? 5 years, 5 months ago
- 2 answers
Vikshit Kumar 5 years, 5 months ago
Yogita Ingle 5 years, 5 months ago
Evolution is a gradual and continuing process of change that occur over a period of time, due to slight variations in genetic compositions as well as changes in environment, leading to formation of new species.
Posted by Vikshit Kumar 5 years, 4 months ago
- 4 answers
Yash Jaiswal????? 5 years, 5 months ago
Vikshit Kumar 5 years, 5 months ago
Posted by Nandhana Nandan 5 years, 5 months ago
- 1 answers
Gaurav Seth 5 years, 5 months ago
Kidney → Ureters→Urinary bladder → Urethra
Glucose, amino acids, salts, and a major amount of water.
Detailed Answer:
The pathway of urine starting from the organ of its formation is :
Kidney → Ureters → Urinary bladder → Ureihra.
The four substances reabsorbed from the initial filtrate are-
(i) Amino acid (ii) glucose (iii) salts (iv) major amount of water.
Posted by Vanshika Baliyan 5 years, 5 months ago
- 4 answers
Posted by Gagandeep Singh 5 years, 5 months ago
- 2 answers
Gaurav Seth 5 years, 5 months ago
Ovulation is one part of the female menstrual cycle whereby a mature ovarian follicle (part of the ovary) discharges an egg. In normal healthy female, it takes place on the 14th day of menstrual cycle.
The process by which an ovum is released from the ovary is called ovulation. The ovaries are composed of ovarian follicles and each follicle has an ovum covered by follicle cells. From the age of puberty ovary starts releasing one ovum once a month.
Vikshit Kumar 5 years, 5 months ago
Posted by Rambabu General Stores Puvvadi 5 years, 5 months ago
- 1 answers
Yogita Ingle 5 years, 5 months ago
The kidneys are at the back of the abdominal cavity, with one sitting on each side of the spine.
The right kidney is generally slightly smaller and lower than the left, to make space for the liver.
Each kidney weighs 125–170 grams (g) in males and 115–155 g in females.
A tough, fibrous renal capsule surrounds each kidney. Beyond that, two layers of fat serve as protection. The adrenal glands lay on top of the kidneys.
Inside the kidneys are a number of pyramid-shaped lobes. Each consists of an outer renal cortex and an inner renal medulla. Nephrons flow between these sections. These are the urine-producing structures of the kidneys.
Blood enters the kidneys through the renal arteries and leaves through the renal veins. The kidneys are relatively small organs but receive 20–25 percent of the heart’s output.
Each kidney excretes urine through a tube called the ureter that leads to the bladder.
The main role of the kidneys is maintaining homeostasis. This means they manage fluid levels, electrolyte balance, and other factors that keep the internal environment of the body consistent and comfortable.
They serve a wide range of functions.
Waste excretion
The kidneys remove a number of waste products and get rid of them in the urine. Two major compounds that the kidneys remove are:
- urea, which results from the breakdown of proteins
- uric acid from the breakdown of nucleic acids
Reabsorption of nutrients
The kidneys reabsorb nutrients from the blood and transport them to where they would best support health.
They also reabsorb other products to help maintain homeostasis.
Posted by Lipsa Pradhan 5 years, 5 months ago
- 1 answers
Dinesh Singh 5 years, 5 months ago
Posted by Lipsa Pradhan 5 years, 5 months ago
- 1 answers
Yogita Ingle 5 years, 5 months ago
On entering into the glass medium light ray bends towards the normal that is light ray gets refracted on entering the glass medium. After getting refracted this ray now travels through the glass slab and comes out of the glass slab by refraction from the other interface boundary. Since ray goes from glass medium to air it again gets refracted and bends away from normal. The incident ray and the emergent ray are parallel to each other.
It is the angle of incidence, r is the angle of refraction and e is the angle of emergence. Angle of incidence and angle of emergence are equal as emergent ray and incident ray are parallel to each other. When a light ray is incident normally to the interface of two media then there is no bending of light ray and it goes straight through the medium.
Posted by Abhijeet Mishra 5 years, 5 months ago
- 3 answers
Dinesh Singh 5 years, 5 months ago
Posted by Vadakumelur Kurinjipadi 5 years, 5 months ago
- 1 answers
Gaurav Seth 5 years, 5 months ago
Growth movement of the shoot in plants in response to a light stimulus is called phototropism. this movement is caused due to more growth of cells towards the shaded side of the shoot as compared to the side of shoot towards the light.
This happens as follows:
(i) When sunlight falls straight on the plant, the auxin hormone synthesized at the tip of the stem spreads uniformly down the stem and due to an equal concentration of auxin, shoot grows straight.
(ii) When sunlight falls on only one side of the plant, the auxin diffuses toward the shady side of the shoot. The concentration of auxin stimulates the cells to grow longer. Therefore, the stem appears to bend towards the source of light.
To demonstrate it we will place a potted plant in a box in which light. comes from only one direction. in a few days, we will observe that the shoot has moved towards the side from which light came in the box.
Posted by Sandhya Kumari 5 years, 5 months ago
- 5 answers
Vikshit Kumar 5 years, 5 months ago
Posted by Vanshika Baliyan 5 years, 5 months ago
- 4 answers
Neha Kakkar ?? 5 years, 5 months ago
Posted by Sandhya Kumari 5 years, 5 months ago
- 3 answers
Posted by Syed Sadiq Ahamed 5 years, 5 months ago
- 1 answers
Meghna Thapar 5 years, 5 months ago
An acid gets its characteristics from the hydrogen atoms of its molecules. Strong acids have weakly bound hydrogen atoms, and the molecules easily separate from them in solution. How many of these hydrogen atoms dissociate and form hydrogen ions determines the strength of an acid. Weak acids exist mostly as molecules with only a few ions in solution, therefore the bonds holding H and A together must be strong. Weak acids do not readily break apart as ions but remain bonded together as molecules.
Posted by Sandhya Kumari 5 years, 5 months ago
- 5 answers
Posted by Sandhya Kumari 5 years, 5 months ago
- 1 answers
Gaurav Seth 5 years, 5 months ago
heart is a muscle that depends on oxygen being delivered to it via the lungs in order to even function. No oxygen and the heart stops beating.
Conversely, the lungs can only oxygenate the blood if the heart pumps blood through them. As you can tell, both are important for survival. Not only do both organ systems help one another in their overlapping functions, but so, too, do they sometimes end up hurting one another if one of them gets sick.
Posted by Sandhya Kumari 5 years, 5 months ago
- 3 answers
Gaurav Seth 5 years, 5 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 Adarsh Behera 5 years, 5 months ago
- 1 answers
Gaurav Seth 5 years, 5 months ago
When the light rays pass through the atmosphere having layers of different densities and refractive indices, then refraction of light takes place. This refraction of light by the earth’s atmosphere is called “atmospheric refraction”.
Posted by Prem Raj 5 years, 5 months ago
- 1 answers
Gaurav Seth 5 years, 5 months ago
- In mouth ptyalin act on carbohydrates converts into dextrose and maltose.
- Pepsin acts on proteins and coverts into peptones.
- Amylase acts on carbohydrates and converts as maltose.
- Trypsin and peptidases acts on proteins and converts in to peptones and amino acids
- Lipase acts on fats and converts into fatty acids and glycerol. Carbohydrates, proteins and respectively.fats are finally converts into glucose, amino acids, fatty acids or glycerol
Posted by Shajeela Hameed 5 years, 5 months ago
- 1 answers
? Pranali.A.P ? 5 years, 5 months ago
Posted by Lucifer ? Morningstar? 5 years, 5 months ago
- 1 answers
Prisha ?? 5 years, 5 months ago
Posted by Vijaya Lakshmi 5 years, 5 months ago
- 5 answers
Posted by Amit Lodhi 5 years, 5 months ago
- 2 answers
Gaurav Seth 5 years, 5 months ago
Good conductors are the materials which allow electricity to pass through them easily whereas, bad conductors are the materials which do not allow electricity to pass through them.
Good conductors offer less resistance to the flow of current, whereas the bad conductors do not transmit current through them.
The electrons of the good conductors move freely, whereas the electrons in bad conductors do not move freely. Metals like silver, copper, etc are good conductors, while materials like rubber, glass, wood, etc are bad conductors.
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
Vanshika Baliyan 5 years, 5 months ago
3Thank You