CBSE > Class 10 > Science | CBSE Board | Homework Help

Environment means everything which surrounds us. It may include living (biotic) and non-living (abiotic) components.
Biotic : Plants and animals. Abiotic : Air, water etc.
Environment affect the life and development of an organism in its natural habitat & vice a versa.
Substances that can be decomposed by the action of micro-organism like bacteria are called bio-degredable. E.g. organic wastes.
Substances which cannot be decomposed by the action of microorganisms are called non-biodegradable.
Example of biodegradable wastes : cattle dung, cotton, jute, paper, fruit and vegetable peels, leaves etc.
Examples of non-biodegradable wastes : plastics, polythene bags, synthetic fibres, metals, radioactive wastes.

For more click on the given link:

<a href="https://mycbseguide.com/blog/our-environment-class-10-notes/">https://mycbseguide.com/blog/our-environment-class-10-notes/</a>

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What do you mean by blob on a stick in spore formation

Posted by Fatema Saifee 5 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 5 years, 4 months ago

Hyphae are thread like structure. tiny blob on a stick structure are sporangium and it contains spores.when this structure come in contact with other moist surface the begin to grow

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Write a short note on lymphatic system

Posted by Balanagasri Thota 5 years, 4 months ago

CBSE > Class 10 > Science

2 answers

Gaurav Seth 5 years, 4 months ago

1) Lymphatic system consists of lymph capillaries, lymph vessels, lymph nodes and lymph glands.
2) To supply nutrients to the cells (tissues), the liquid portion of the blood with nutri¬ents flows out of the capillaries. This is called tissue fluid.
3) To transport the tissue fluid into the main blood stream, a separate system called lymphatic system is present.
4) Lymph is the vital link between blood and tissues by which essential substances pass from blood to cells and excretory products from cells to blood.
5) Lymph is the substance that contains blood without solid particles.
6) Tissue fluid is the substance which contains lymph present in the tissues.
7) From intercellular spaces, lymph goes into lymphatic capillaries.
8) Lymphatic capillaries join to form large lymph vessels which finally open into larger veins.
9) Lymph flows only in direction, that is from tissues to heart through veins.
Functions of Lymph:
a) Lymph carries digested and absorbed fats from small intestine to different tissues
of the body. .
b) It helps in removing Waste materials from the cells in the body to drain into blood.
c) Lymph protects cells in the tissues from infection.

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Anmol Kumar 5 years, 4 months ago

Its your hommework so do it yourself???

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Explain different components of blood.

Posted by Balanagasri Thota 5 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Gaurav Seth 5 years, 4 months ago

Blood is a connective tissue that helps in the transportation of substances, protects against diseases and regulates the temperature of the body. Do you know why the colour of blood is red?

It is red in colour due to a red pigment called haemoglobin present in its red cells. The components of Blood are Plasma, Red blood corpuscles (Red blood cells or RBCs), White blood corpuscles (White blood cells or WBCs) and platelets.

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Why blood is called fluid tissue?

Posted by Balanagasri Thota 5 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Gaurav Seth 5 years, 4 months ago

The cells of connective tissue are embedded in the homogeneous, intercellular substance called matrix of the tissue. In case of blood, the matrix is liquid or fluid in nature, called plasma. Due to the fluid matrix, blood is a fluid. The blood cells are present in the plasma.

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What is environment?

Posted by Kiran Thakran 5 years, 4 months ago

CBSE > Class 10 > Science

4 answers

Neha Singh 5 years, 4 months ago

The place where organism can sustain their life is called environment

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Sanika Walimbe 5 years, 4 months ago

Physical and biological world around us where we live is called environment

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Rudrani Kumari 5 years, 4 months ago

Our surrounding where organinism can survive and existence of life is easily possible

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Kiran Thakran 5 years, 4 months ago

Environment

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A ray of light that strikes a plane mirror PQ at an angle of incidence 30°,is reflected from the plane mirror QR placed at right angles to the first mirror.The angle of reflection at the second mirror is:

Posted by Rajebhosale D.M. 5 years, 4 months ago

CBSE > Class 10 > Science

2 answers

Rajebhosale D.M. 5 years, 4 months ago

Ok... thanks

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Gaurav Seth 5 years, 4 months ago

Ray AB strikes the mirror PQ at B and gets reflected along BC according to the laws of reflection. The ray BC incident on mirror QR makes an angle of 30^o with the mirror. So, the angle of incidence on this mirror is 90^o- 30^o= 60^o. Hence, the angle of reflection is also 60^o.

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B=munod 0 nI/2r ques on this formulas

Posted by Ranjit Singh 5 years, 4 months ago

CBSE > Class 10 > Science

0 answers

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Ozone depletion

Posted by Gangaram Mukhiya 5 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Anupama ?? 5 years, 4 months ago

Due to the higher pollution there's forming wholes in ozone layer or the damging of ozone layer is known as ozone layer depletion.

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How did we come to know that the substance is completely ionized or not ??? What changes take place in a complete ionized solutions ??

Posted by Confusion ??? Master ??? 5 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Meghna Thapar 5 years, 1 month ago

A partially or weakly ionized gas means the plasma is not dominated by Coulomb collisions, i.e. when . Sometimes "fully ionized" means there are no orbital electrons left. To determine whether or not it does completely ionize/dissociate, you can write the chemical formula of what the acid/base is reacting with, and if it forms water and its conjugate salt, then it has completely dissociated/ionized. The process in which neutral molecules get splits up into charged ions when exposed in a solution is referred to as the ionization of a compound. According to the Arrhenius theory, the acids are the compounds that dissociate in the aqueous medium in order to generate the hydrogen ions, H+ in the aqueous medium.

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Last ten year question paper of science with solution

Posted by Ajay Yadav 5 years, 4 months ago

CBSE > Class 10 > Science

2 answers

Making Craft Sadaf 5 years, 4 months ago

Ncert is enough bro

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Anmol Kumar 5 years, 4 months ago

Padhle.in Go and check there.

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Formulas of light reflection and refraction

Posted by Yogeeth Gk 5 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Ayush Kapoor 5 years, 4 months ago

Reflection of light 1.m=height of image /height of object 2.1/f=1/v-1/u 3. m=-v/u 4.f=R/2 Rarefraction of light 1.m= v/u 2. 2f=r 3.1/f=1/v+1/u 4.m=height of image/height of object 5.P=1/f 6.If we have to find combination powet of (lenses) -: P=power of 1st lens +powet of 2nd lens+power of...............

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Calculatecalculate the resistance of 2.5 km long aluminium wire of radius 0.5 mm resistivity of aluminium is equal to 2.7 into 10 to the power minus 8 ohm metre

Posted by Geetanjali Singh 5 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Tamil Selvan P 5 years, 4 months ago

2 cm

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What is electric circuit ?

Posted by Samudhra M 5 years, 4 months ago

CBSE > Class 10 > Science

4 answers

Making Craft Sadaf 5 years, 4 months ago

A close path of an electric current

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Samudhra M 5 years, 4 months ago

Thank you

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Yogita Ingle 5 years, 4 months 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.

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Rishabh Rathi 5 years, 4 months ago

An electrical circuit is a network consisting of a closed loop, giving a return path for the current.

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Define electric power and it's si unit

Posted by Vishank Wathod 5 years, 4 months ago

CBSE > Class 10 > Science

4 answers

Arpita .9 5 years, 4 months ago

The rate at which electric current is delivered in a electric circuit is called electric power.it's si unit is watt.

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Bhumika Choukiker 5 years, 4 months ago

Rate per unit time At which energy is transferred by an electric circuit. SI unit of power is watt, j/sec.

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Yogita Ingle 5 years, 4 months ago

Electric power is the rate at which electric energy is transferred by an electric circuit. The SI unit of power is the watt, one joule per second.

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Rishabh Rathi 5 years, 4 months ago

Electric power is the rate, per unit time, at which electrical energy is transferred by an electric circuit. The SI unit of power is the watt, one joule per second.

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why compound is known as pure substance as it can be broken down into its constitute particles..???plz reply

Posted by Ravi Kumar 5 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Anuj Kishor Bhavnani 5 years, 4 months ago

I dont know confirmly but may be its just because compounds are found in the single form like a pure substance and it is impossible to seperate them without processing.

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What is an electric circuit ? Explain with the help of a diagram

Posted by Shanti Chettri 5 years, 4 months ago

CBSE > Class 10 > Science

2 answers

Making Craft Sadaf 5 years, 4 months ago

Bhai diagram kese dikhaau???

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Yogita Ingle 5 years, 4 months ago

The electric circuit is a closed loop in which electrical components form a network for flowing the electrons. It has a point of source such as a battery from where the electrons start to flow whereas the point where electrons leave the electrical circuit is called the return.
A simple circuit consists of the power source, conductors, switch and load.

Cell or battery : It is the power source.
Load : A bulb that lights when the circuit is closed. It is also termed as the resistor.
Conductors (Wire): One end of the wire is connected the load to the power source and the other end of the wire connects the power source back to the load.
Switch: A switch can be used to open or close a circuit

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Questions of nutrition part

Posted by Sakshi Raghav 5 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Sakshi Raghav 5 years, 4 months ago

Question answer

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Measurements of electric current

Posted by Bishal Choudhury 5 years, 4 months ago

CBSE > Class 10 > Science

4 answers

Maithali Thakur 5 years, 4 months ago

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Yogita Ingle 5 years, 4 months ago

Electric Current is the rate of flow of electrons in a conductor. The SI Unit of electric current is the Ampere.

The magnitude of electric current is measured in coulombs per second. The SI unit of electric current is Ampere and is denoted by the letter A. Ampere is defined as one coulomb of charge moving past a point in one second. If there are 6.241 x 10¹⁸ electrons flowing through our frame in one second then the electrical current flowing through it is ‘One Ampere.’

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Guri Grk 5 years, 4 months ago

Ampere and the instrument that is used is ammeter

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Bishal Choudhury 5 years, 4 months ago

Answer please

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What is avirtual image

Posted by Anup Dutta 5 years, 4 months ago

CBSE > Class 10 > Science

2 answers

Student ✍️✍️✍️ 5 years, 4 months ago

The image formed when the light rays don't actually meet but appears to meet is known as virtual image. The virtual s cannot be captured on screen

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Gaurav Seth 5 years, 4 months ago

The image formed when rays of light appear to meet (when diverging rays are extended) at a point is called a virtual image. Is formed on the different side as that of the object. It is formed on the same side of the object. Real images are inverted. Virtual images are erect.

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How to study well ???

Posted by New Life Piew 5 years, 4 months ago

CBSE > Class 10 > Science

5 answers

Neha Singh 5 years, 4 months ago

Study daily Just sit at the time when ur mind is fresh and is able to concentrate on the studies..... Hope it will help u.........??

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Neha Singh 5 years, 4 months ago

Study daily Just sit at the time when ur mind is fresh and is able to concentrate on the studies..... Hope it will help? u.........??

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Shrayansh Mishra 5 years, 4 months ago

Icrease concentration and avoid all attractive things such as mobile.......?

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Anup Dutta 5 years, 4 months ago

Study every subject daily

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Vidhi Gupta 5 years, 4 months ago

Study seriously for half hour u will find topics interesting will sit for more ...

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How will you arrange 2 ohm ,4 ohm and 12 ohm to obtain 6 ohm

Posted by Class 11 Student 5 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Anup Dutta 5 years, 4 months ago

Subtract the 12 ohm to 6ohm

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What is an acid ?

Posted by Shivvay Nandhan 5 years, 4 months ago

CBSE > Class 10 > Science

5 answers

Sanika Walimbe 5 years, 4 months ago

Substances which release h+ ions when reacted with water

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Anup Dutta 5 years, 4 months ago

Simple we know that acid are sore in taste

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Yogita Ingle 5 years, 4 months ago

Acids

Acids is defined as the one which produces hydrogen ions in water. For Example, Sulphuric Acid, Hydrochloric Acid etc.
They give sour taste.
Acids turn blue litmus to red. This is used as confirmation test for the presence of acid.
When acids react with metals, gases are evolved.

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Charu Chandra Sinha 5 years, 4 months ago

Substance which gives h+ion in its aqoues solution

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Nakshatiraa Murugan 5 years, 4 months ago

Substance which contain h+ ions

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Why the aquarium have to be cleaned once in a while?

Posted by Sreeshma Krishnan 5 years, 4 months ago

CBSE > Class 10 > Science

4 answers

Student ✍️✍️✍️ 5 years, 4 months ago

In order to clean the water , as the dirtiness cause due to fish excretion and other dust so that it is easy for fishes to survive in aquarium ??

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Sanika Walimbe 5 years, 4 months ago

To clean the dead fish or else decomposers would feed on it and consume all the dissolved oxygen, making it difficult for other fish to survive

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Anup Dutta 5 years, 4 months ago

To protect from iron

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Abijith V 5 years, 4 months ago

Inorder to remove the deoxygenated water

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why water does not show acidic character as it has hydrogen

Posted by Ravi Kumar 5 years, 4 months ago

CBSE > Class 10 > Science

2 answers

Anand Kumar 5 years, 4 months ago

As per the latest definition of acid, the substance which ionises in aqueous solution is called acid... But water does not ionises into its constituents die to which it does not show acidic character. .. HOPE IT WAS HELPFUL FOR YOU BUDDY...

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Reddy Bleela 5 years, 4 months ago

acids do not show acidic behaviour in the absence of water because the dissociations of hydrogen ions form in acid occurs in the presence of water only it is the hydrogen ions that are responsible for the acidic behaviour

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Anyone can u explain the functions of nephron.

Posted by Mariya S.? 5 years, 4 months ago

CBSE > Class 10 > Science

4 answers

Samudhra M 5 years, 4 months ago

Functioning of a Nephron: The blood enters the kidney through the renal artery, which branches into many capillaries associated with glomerulus. The water and solute are transferred to the nephron at Bowman’s capsule. In the proximal tubule, some substances such as amino acids, glucose, and salts are selectively reabsorbed and unwanted molecules are added in the urine. The filtrate then moves down into the loop of Henle, where more water is absorbed. From here, the filtrate moves upwards into the distal tubule and finally to the collecting duct. Collecting duct collects urine from many nephrons. The urine formed in each kidney enters a long tube called ureter. From ureter, it gets transported to the urinary bladder and then into the urethra.

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Yogita Ingle 5 years, 4 months ago

Functioning of a Nephron:

The blood enters the kidney through the renal artery, which branches into many capillaries associated with glomerulus.
The water and solute are transferred to the nephron at Bowman’s capsule.
In the proximal tubule, some substances such as amino acids, glucose, and salts are selectively reabsorbed and unwanted molecules are added in the urine.
The filtrate then moves down into the loop of Henle, where more water is absorbed.
From here, the filtrate moves upwards into the distal tubule and finally to the collecting duct. Collecting duct collects urine from many nephrons.
The urine formed in each kidney enters a long tube called ureter. From ureter, it gets transported to the urinary bladder and then into the urethra.

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Charu Chandra Sinha 5 years, 4 months ago

Nephron is unit of our excretory system which 1)filter blood 2)maintain water balance etc..

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Ravi Kumar 5 years, 4 months ago

to filter the blood

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What is different between *q* and *Q*?

Posted by Krishna K 5 years, 4 months ago

CBSE > Class 10 > Science

2 answers

Vidhi Gupta 5 years, 4 months ago

No difference both are same but use Q as it is given in NCERT

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Varad Raut 5 years, 4 months ago

Both are same

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What is bond and it's types

Posted by Sanjana Soni 5 years, 4 months ago

CBSE > Class 10 > Science

4 answers

Chandresh Tiwari 5 years, 4 months ago

Bones are those forces which hold the atom together from a compound or molecule types of the bond are as follows: Ionic bond single bond triple bond and double bond the single and triple and double bond are coming in the covalent bond in this strongest bond is the single one from the covalent bond but very strongest bond is ionic bond then the single bond.

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Anand Kumar 5 years, 4 months ago

Bonds are those forces which holds atoms together to form compounds /molecules... It's types: ionic bounds and covalent bonds..... HOPE IT WAS HELPFUL FOR YOU BUDDY! !!!!!

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Anand Sagar Mathematician 5 years, 4 months ago

Bond means joint of any carbon or atom. Bond are two types. 1.saturated bond. 2.unsaturated bond.

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Vaibhav Singh 5 years, 4 months ago

Bond means joint

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