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Describe Excretion system in man.

Posted by Shakil Ahmad 5 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 5 years, 3 months ago

Excretion in human beings

A pair of kidneys, a pair of ureters, a urinary bladder and a urethra constitutes the human excretory system.
Kidneys are present on either side of the backbone in the abdomen.
Kidneys produce urine and urine from kidney passes through the ureters into the urinary bladder and remains stored their until it is released through the urethra.
Urine is produced to filter out waste products from the blood.
Nephrons are basic structural and functional unit of kidney.
Cluster of thin walled blood capillaries called glomerulus in the nephron filtrate the urine and each cluster is associated with cup shaped end of a tube called Bowman’s capsule.

ANSWER

What is ecosystem and its components

Posted by Swastik Satapathy 5 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 5 years, 3 months ago

Ecosystem: All organisms such as plants, animals, microorganisms and human beings interact with the non-living physical surroundings in an area called as the ecosystem.
The structural component of an ecosystem may be classified under two main types:
1. Biotic components
2. Abiotic components
Biotic components comprise the living organisms present in an ecosystem. These include plants, animals and micro-organisms (bacteria and fungi). The biotic component of an ecosystem has been classified into three groups:
1. Producers (green plants)
2. Macro consumers (usually animals)
3. Micro consumers or decomposers (organisms like bacteria and fungi).
Abiotic components consist of the non-living components like light, temperature, water, oxygen,carbon, nitrogen and minerals. Various important abiotic factors have been classified as follows:
1. Climatic factors: These include light, temperature, precipitation, atmospheric humidity and wind.
2. Topographic factors: These include altitude, surface slope and exposure, etc.
3. Edaphic factors: These include soil and substratum.

ANSWER

Problems based on charge and electric flow

Posted by Ankit Gurjar 5 years, 3 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

Balance chemical equation hno3+ca(oh)2 equal to ca(no3)2+h2o

Posted by Ronak Chawda 5 years, 3 months ago

CBSE > Class 10 > Science

2 answers

Himanshi Jurel Himanshi 5 years, 3 months ago

2Hno3+ca(oh)2= ca(no3)2 + 3h2o

Usha Lakhlan 5 years, 3 months ago

2HNO3+Ca(OH)2= Ca(NO3)2+2H2O

ANSWER

Koi educart ka question bank kharida h

Posted by Rounak Anand 5 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Riya Philip 5 years, 3 months ago

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How acid should be diluted?

Posted by Raman Valla 5 years, 3 months ago

CBSE > Class 10 > Science

5 answers

Tanishka Ugale 5 years, 3 months ago

Acid to be added to water with constant stirring. If water added to acid, then the esoteric process taking place would be dangerous and the contents of the beaker, which will be mainly acid, would splash out which may cause injuries or the beaker might also break anc explode

Riya Philip 5 years, 3 months ago

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Priyanka Battise 5 years, 3 months ago

Acid should be dilluted by, adding acid into water with stirring slowly . So that it would not produce that much heat .

Gaurav Kumar 5 years, 3 months ago

By adding acid into water ?gradually we can dilute the acid NOTE:- Don't add water into acid We have to add acid into water

Accidental Genius 5 years, 3 months ago

An acid should always be diluted by pouring the acid slowly in water with constant stirring.

ANSWER

Give a short paragraph on sexual reproduction in hibiscus plant.

Posted by Sunita Sunnu 5 years, 3 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

Who have remembered the whole modern periodic table?tell the truth

Posted by Anshuman Omm 5 years, 3 months ago

CBSE > Class 10 > Science

5 answers

Aniket Kumar Yadav 5 years, 3 months ago

Here me friend I remember

Riya Philip 5 years, 3 months ago

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Riya Philip 5 years, 3 months ago

Oh great

Anshuman Omm 5 years, 3 months ago

No i can't but one of my friend completed 100 elements

Tejasvini S 5 years, 3 months ago

No one can remember that fully I think . You ??

ANSWER

What is renewable resource?

Posted by Iconic Ff 5 years, 3 months ago

CBSE > Class 10 > Science

4 answers

Sakshi Kori 5 years, 3 months ago

Those resources Which can be renewed or reproduced by physical , chemical or mechanical processes

Neetu Bansal 5 years, 3 months ago

Those resourses which can be renewed or replenish is known as renewable resouces eg - wind

Kedar Thakur 5 years, 3 months ago

Those type of resourses which can be refreshed again and again such as wind , solar energy etc

Eshan Shah 5 years, 3 months ago

All those resources which can be renewed or replenished by physical, chemical , mechanical processes can be termed as a renewable resource

ANSWER

Ph of milk

Posted by Sneha Singh 5 years, 3 months ago

CBSE > Class 10 > Science

5 answers

Himanshi Jurel Himanshi 5 years, 3 months ago

6.8

Tejasvini S 5 years, 3 months ago

6.8

Satyam Lodhi Rajput 5 years, 3 months ago

About 6. 8

Riya Philip 5 years, 3 months ago

About 6.7 to 6.9

Riya Philip 5 years, 3 months ago

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What is it Heridity

Posted by Yogesh Patidar 5 years, 3 months ago

CBSE > Class 10 > Science

3 answers

Sakshi Kori 5 years, 3 months ago

Transfer of traits from one generation to second generation

Vasavi Reddy 5 years, 3 months ago

The transmission of charaters from parents to offsprings is know as Heridity......??

Riya Philip 5 years, 3 months ago

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I want to buy reference of biology can u suggest me reference

Posted by Akshita Akshita 5 years, 3 months ago

CBSE > Class 10 > Science

5 answers

Ajin Ajin 5 years, 3 months ago

Me too At first you study your ncert book well and then you can take the reference as Lakhmir Singh and Manjit Kaur is a very good book for explaination

Accidental Genius 5 years, 3 months ago

See if you have studied ncert very well then you can study from a reference book for better practice .. Lakhmir Singh and Manjit Kaur is a very good book for explaination and has a detailed information of all topics and an ample of questions.. Xam idea is also a good choice as it has all imp. Questions and also contains Ncert exemplar imp. Questions.. So, if u want for explanation then lakhmir singh and manjit kaur u can take And for extra practice xam idea. But my first advice is that you study ncert very carefully and then solve the reference book. Hope it helps.

Anshuman Omm 5 years, 3 months ago

Scand

Riya Philip 5 years, 3 months ago

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Himanshu Pathak Pathak 5 years, 3 months ago

Lakhmir Singh and Manjit kour is good .

ANSWER

Al2O 3+2Naoh product is 2NaAlO2+H2O balance the equation

Posted by Jasleen Kaur 5 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Riya Philip 5 years, 3 months ago

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What is importance of DNA copying in reproduction??( pls answer this question ??...)

Posted by Bhakti J. Neve 5 years, 3 months ago

CBSE > Class 10 > Science

3 answers

Riya Philip 5 years, 3 months ago

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Yogita Ingle 5 years, 3 months ago

DNA copying is an important phenomenon of reproduction through which the organisms pass on their characteristics to their offspring. It maintains the characteristics in different generations of the species. It also produces variations which are useful for the survival of species for long time.

Shubham Pujara 5 years, 3 months ago

DNA contains information for the inheritance of features from parents to next generation. DNA presents in nucleus of cells are the information source for making protein. If information is different, different protein will be made that lead to altered body design.

ANSWER

State 3 law of mendel

Posted by Bhakti J. Neve 5 years, 3 months ago

CBSE > Class 10 > Science

2 answers

Bhakti J. Neve 5 years, 3 months ago

Any one please answer ?

Riya Philip 5 years, 3 months ago

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List the secondary sexual character in male and female

Posted by Karthihesh G V 5 years, 3 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

Define Ecosystem and it's components? (For 5mark) .

Posted by Pranav K.P 5 years, 3 months ago

CBSE > Class 10 > Science

3 answers

Riya Philip 5 years, 3 months ago

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Yogita Ingle 5 years, 3 months ago

All organisms such as plants, animals, microorganisms and human beings interact with the non-living physical surroundings in an area called as the ecosystem.

There are two main components of an ecosystem which are in constant communication with each other. They are the biotic components and the abiotic components.

Biotic Components of Ecosystem

The living components of an ecosystem are called the biotic components. Some of these factors include plants, animals, as well as fungi and bacteria. These biotic components can be further classified, based on the energy requirement source. Producers, consumers, and decomposers are the three broad categories of biotic components.

Producers are the plants in the ecosystem, which can generate their own energy requirement through photosynthesis, in the presence of sunlight and chlorophyll. All other living beings are dependent on plants for their energy requirement of food as well as oxygen.
Consumers include herbivores, carnivores, and omnivores. The herbivores are the living organisms that feed on plants. Carnivores eat other living organisms. Omnivores are animals that can eat both plant and animal tissue.
Decomposers are the fungi and bacteria, which are the saprophytes. They feed on the decaying organic matter and convert this matter into nitrogen and carbon dioxide. The saprophytes play a vital role in recycling the nutrients so that the producers i.e. plants can use them once again.

Abiotic Components of Ecosystem

Abiotic components are the physical and/or the chemical factors that act on the living organisms at any part of their life. These are also called as the ecological factors. The physical and chemical factors are characteristic of the environment. Light, air, soil, and nutrients, etc. form the abiotic components of an ecosystem.

The abiotic factors vary from ecosystem to ecosystem. In an aquatic ecosystem, the abiotic factors may include water pH, sunlight, turbidity, water depth, salinity, available nutrients and dissolved oxygen. Similarly, abiotic factors in terrestrial ecosystems can include soil, soil types, temperature, rain, altitude, wind, nutrients, sunlight etc.

Pranav K.P 5 years, 3 months ago

Any body please? answer

ANSWER

If angle of incedence is 90degree then what is the angle of refraction

Posted by 123 123 5 years, 3 months ago

CBSE > Class 10 > Science

5 answers

Kedar Thakur 5 years, 3 months ago

90 degrees becoz i=r

Adarsh Singh 5 years, 3 months ago

90

Subrata Kumar Adak 5 years, 3 months ago

The answer is 90 degree Because i=r

Riya Philip 5 years, 3 months ago

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Riya Philip 5 years, 3 months ago

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Is CA(OH) 2 IS WEAK BASE OR STRONG BASE????

Posted by Shashank Karn 5 years, 3 months ago

CBSE > Class 10 > Science

4 answers

Anshuman Omm 5 years, 3 months ago

Strong base

Adarsh Singh 5 years, 3 months ago

Strong base

Riya Philip 5 years, 3 months ago

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Yogita Ingle 5 years, 3 months ago

Calcium hydroxide, Ca(OH)₂, is a strong base. It dissociates completely into Ca²⁺ and OH^- ions in aqueous solution. It is, however, sparingly soluble in water. Ca(OH)₂ is a strong base but not very soluble.

ANSWER

Find the object distance using lense formula if focal length is 20 and image distance is 20cm

Posted by Shraddha Panchbhai 5 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Riya Philip 5 years, 3 months ago

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How acids react with metal oxides?(2)explain with reaction *

Posted by Trisav Dhiman 5 years, 3 months ago

CBSE > Class 10 > Science

3 answers

Moksha Maheta 5 years, 3 months ago

Acid +metal oxides=salt +water

Riya Philip 5 years, 3 months ago

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Versha Kawaliya 5 years, 3 months ago

When acid reacts with metal oxide to form salt and water. Example- 1. CopperII to oxide is a metal oxide. Dilute hydrochloric acid with copper to oxide to give copper to chloride and water Cup + HCl (dil.) -- Cucl2 + H2O 2. When sodium oxide reacts with dilute hydrochloric acid to form sodium chloride +water Na20 +HCl (dil.) --Na2cl + H20

ANSWER

Observe the movement of your stomach during inhatation and exhalatian what can be the reason behind your observation

Posted by Himanshu Rajput 5 years, 3 months ago

CBSE > Class 10 > Science

3 answers

Riya Philip 5 years, 3 months ago

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Rishi Kaushal 5 years, 3 months ago

Peristaltic movement

Yogita Ingle 5 years, 3 months ago

Normal ventilation is an automatic, seemingly effortless inspiratory expansion and expiratory contraction of the chest cage. This act of normal breathing has a relatively constant rate and inspiratory volume that together constitute normal respiratory rhythm. The accessory muscles of inspiration (sternocleidomastoid and scalenes) and expiration (abdominal) are not normally used in the resting state. Abnormalities may occur in rate, rhythm, and in the effort of breathing.

Technique

The establishment of the tidal volume and pattern of respiration in normal individuals is a complicated process. Recognizing alterations in these factors is an important early clue of disease recognition. While frequently it is nonspecific, in many instances it can lead directly to a diagnosis. Careful observation of the respiratory rate and pattern is a crucial part of the physical examination.

Simple inspection of the respiratory cycle, observing rate, rhythm, inspiratory volume, and effort of breathing, is all that is necessary. The rate is noted by observing the frequency of the inspiratory phase, since this phase is active and easy to count. Record the number of breaths per minute; this is the respiratory rate. While observing the rate, note the inspiratory expansion of the chest cage. This expansion should be the same during each cycle.

Normally, the accessory muscles of inspiration and expiration are not used. Their use should be observed and, if found, recorded as "use of accessory muscles on inspiration" and "expiration is active with abdominal muscle contraction."

Basic Science

The respiratory system's major functions are to provide an adequate oxygen (O₂) supply to meet the energy production requirements of the body and maintain a suitable acid-base status by removing carbon dioxide (CO₂) from the body. This is accomplished by moving varying volumes of air into and out of the lungs. Ventilation, the process of air movement into the lungs, is a carefully controlled modality with a wide range of response that enables the markers of gas exchange adequacy (Pao2, Paco2, and pH) to be kept within a relatively small physiologic range.

ANSWER

a converging lens of power 8 diopter is combined with a divergent lens of power -10 diopter calculate the focal length of the combination

Posted by Suryansh Gupta 5 years, 3 months ago

CBSE > Class 10 > Science

2 answers

Suryansh Gupta 5 years, 3 months ago

???????

Riya Philip 5 years, 3 months ago

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What is SI. unit of electricity

Posted by Vikas Roria 5 years, 3 months ago

CBSE > Class 10 > Science

5 answers

Akshita Akshita 5 years, 3 months ago

Ampere

Versha Kawaliya 5 years, 3 months ago

Ampere

Riya Philip 5 years, 3 months ago

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Ravidev Mandal 5 years, 3 months ago

Ampere

Yogita Ingle 5 years, 3 months ago

Electric power is the rate at which work is done or energy is transformed into an electrical circuit. It is represented by P.

The formula for electric power is

P = VI = VQ/t

P = Power

V i= Potential difference in the circuit

I = Electric current

Q = Electric charge in coulombs

t = Time in seconds

The SI unit of electric power is Watt or joule per second.

ANSWER

linear magnification of a concave lens is always positive and where as that of convex lens has both positive and negative why

Posted by Nikki Jaisawal 5 years, 3 months ago

CBSE > Class 10 > Science

3 answers

Abhay Soni 5 years, 3 months ago

(a) This is because a concave lens forms a virtual and erect image for any position of the object. (b) This is because image formed by a convex lens may be real and inverted for some positions of the object and image formed may also be virtual and erect for some other positions to the object

Yogita Ingle 5 years, 3 months ago

(a) This is because a concave lens forms a virtual and erect image for any position of the object.
(b) This is because image formed by a convex lens may be real and inverted for some positions of the object and image formed may also be virtual and erect for some other positions to the object.

Riya Philip 5 years, 3 months ago

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Which book to be preferred for chemistry preparation(2021)? NCERT textbook OR any private publication ( S.Chand)

Posted by Ayush Prashar 5 years, 3 months ago

CBSE > Class 10 > Science

2 answers

Riya Philip 5 years, 3 months ago

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Manish Faujdar 5 years, 3 months ago

Hello ! ....to be honest i just completed my acid bases just now from S chand by Lakhmir singh manjeet kaur And now i got your comment . I would say that if you have time and you can study on daily basis then S Chand is perfect bcoz it has well explained theory and really good questions And if you don't study on daily basis and study one day before exam then s chand won't work ...then you can easily read NCERT because s chand has long chapters but are very useful I also study from S Chand and also after completion i have a look on NCERT too . If you want to contact u can contact on insta or FB Instagran username. : o_.alok._o Or search on instagram ALOK FAUJDAR ??

ANSWER

Translate the following statements into balanced chemical equations. 1. Hydrogen burns in the presence of air to form water. 2. Magnesium reacts with steam to form magnesium hydroxide and hydrogen gas. 3. Solution of barium chloride and sodium sulphate in water react to give insoluble barium sulphate and the solution of sodium chloride. 4. Dilute sulphuric acid reacts with aluminium powder. 5. Phosphorus reacts with chlorine to form phosphorus pentachloride. 6. Mercuric oxide is heated. 7. Potassium metal reacts with water to give potassium hydroxide and hydrogen gas. 8. Zinc carbonate undergoes calcination. 9. Barium chloride reacts with zinc sulphate to give zinc chloride and barium sulphate as precipitate. 10. Aluminium + copper chloride → aluminium chloride + copper. Please answer.

Posted by Ramya Murali Bhat 5 years, 3 months ago

CBSE > Class 10 > Science

3 answers

Anshuman Omm 5 years, 3 months ago

1.2H2 + O2= 2H2O 2.Mg2 +2H20=2MgO+2H2 3.Na2SO4+BaCl2=2NaCl+BaSO4 4.3H2SO4+2Al =Al2(SO4)3+3H2 5.P4+10Cl2 =4PCl5 6.2HgO =2Hg +O2 7.2K+2H2O=2KOH + H2 8.ZnCO3=ZnO +CO2 9.BaCl2+ZnSo4=ZnCl+BaSO4 10.2Al+3CuCl2=2AlCl3+3Cu

Riya Philip 5 years, 3 months ago

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Shivalika Shivalika 5 years, 3 months ago

It is so hard

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How to balance a chemical equation?

Posted by Vishal Pratap Singh 5 years, 3 months ago

CBSE > Class 10 > Science

4 answers

Riya Philip 5 years, 3 months ago

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Krishna Choudhary 5 years, 3 months ago

A balanced chemical equation is that in which the total number of atom of each elements are equal on both side of the equation. The balancing of a chemical equationis based on law of conservation of mass.

Saurabh ???? 5 years, 3 months ago

Total number of atoms on both sides is known as balance equation

Maahi ......♾ 5 years, 3 months ago

A balanced chemical equation is that in which the total number of atom of each elements are equal on both side of the equation. The balancing of a chemical equationis based on law of conservation of mass.

ANSWER

What is mainly responsible for stunted growth of a person, swelling of face, discoloration of hair and skin diseases?

Posted by Nandani Jaiswal 5 years, 3 months ago

CBSE > Class 10 > Science

3 answers

Yogita Ingle 5 years, 3 months ago

Lack of protein in diet.

Explanation: The mainly responsible for stunted growth of a person swelling of face discoloration of hair and skin diseases because the person is not taking enough protein in his food. He should eat a lot of pulses, grams, egg white, milk etc.

Riya Philip 5 years, 3 months ago

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Nandani Jaiswal 5 years, 3 months ago

Please answer my question .

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What are the effect of corrosion?

Posted by Maahi ......♾ 5 years, 3 months ago

CBSE > Class 10 > Science

5 answers

Satyam Lodhi Rajput 5 years, 3 months ago

1. It make the metal weak and easily broken into pieces by our external force 2. It converse the metal into undesirable compound by interaction with moist air and presence of oxygen

Tahseen Haider 5 years, 3 months ago

Damage to car bodies,bridges,iron railings, ships.And all the objects made of metals,specially those of iron. Hope! this is helpful for you

Riya Philip 5 years, 3 months ago

Corrosion causes plant shutdowns, waste of valuable resources, loss or contamination of product, reduction in efficiency, costly maintenance and expensive overdesign. Hope this answer helps you ? ?

Riya Philip 5 years, 3 months ago

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Maahi ......♾ 5 years, 3 months ago

Can any one plz give my question's answer??

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