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    • Posted by Balram Singh 7 years, 4 months ago

    CBSE > Class 08 > Science
    • 3 answers

    Khushi Nain 7 years, 4 months ago

    What's your question??

    1Thank You

    Sankalp Gupta 7 years, 4 months ago

    Cell structure and function

    2Thank You

    Akhil Tomar 7 years, 4 months ago

    The Cell

    2Thank You

    ANSWER

    • Posted by Mohit Kushwaha 7 years, 4 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Yogita Ingle 7 years, 4 months ago

    Characteristics of Ideal Fuel

    • It has a high calorific value.
    • It burns easily in air at a moderate rate.
    • It has a proper ignition temperature.
    • It does not produce any harmful gases or leaves behind any residue after burning.
    • It is cheap, readily available and easy to transport.

    0Thank You

    ANSWER

    • Posted by Arushi Chandurkar 7 years, 4 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Yogita Ingle 7 years, 4 months ago

    If we consider Taj Mahal, the industries located in and around Agra like rubber processing, automobile, chemicals and especially the Mathura oil refinery, have been responsible for producing pollutants like sulphur dioxide and nitrogen dioxide. These gases react with the water vapour present in the atmosphere to form sulphuric acid and nitric acid. The acids drop down with rain, making the rain acidic. This is called acid rain. Acid rain corrodes the marble of the monument. The phenomenon is also called “Marble cancer”.

    1Thank You

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    • Posted by Arushi Chandurkar 7 years, 4 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Meghna Thapar 5 years, 7 months ago

    The Mathura refinery release chemicals like sulphur which rise into the atmosphere, mix with rain and oxygen and cause acid rain which corrodes the marble of Taj Mahal. This causes yellowing of ​Taj Mahal. That is why, the Mathura refinary has been closed. This sulphur dioxide reacts with water present in the atmosphere to form sulphuric acid. This sulphuric acid formed in the atmosphere reaches the earth surface through acid rain. This acid is posing a great threat to Taj Mahal as it destroys the marble quality and its colour.

    0Thank You

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    • Posted by Arushi Chandurkar 7 years, 4 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Meghna Thapar 5 years, 7 months ago

    Bitumen is a thick, black crude oil. Bitumen is a low-grade of crude oil which is composed of complex, heavy hydrocarbons. In an oil reservoir, bitumen is a thick, viscous fluid and must be extracted from the ground. When extracting it, a lot of heat and effort must be used to upgrade it to a better product. The majority of asphalt used commercially is obtained from petroleum. Nonetheless, large amounts of asphalt occur in concentrated form in nature. Naturally occurring deposits of bitumen are formed from the remains of ancient, microscopic algae (diatoms) and other once-living things.

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    • Posted by Gurpreet Singh Batth 7 years, 4 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Meghna Thapar 5 years, 7 months ago

    Organic manure or organic fertilizer is made up of organic biodegradable waste like animal excreta and agriculture wastes. As it biodegradable it cannot harm the environment and increase the soil fertility it is better than chemical fertilizer. The biggest disadvantage of using an organic fertilizer is that it may not contain primary nutrients like nitrogen, phosphorous or potassium, also known as NPK. Manure-based fertilizers contain these nutrients and are still considered organic. However, many others don't contain significant quantities of NPK.

    0Thank You

    ANSWER

    • Posted by Piyush Gwala 7 years, 4 months ago

    CBSE > Class 08 > Science
    • 0 answers
    ANSWER

    • Posted by Legend _Paul 5 years, 9 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Meghna Thapar 5 years, 7 months ago

    Frogs and fish mostly lay their eggs in water,larvae produced by them could flow along with water so to protect their generation they have to lay thousands of eggs at a time while hens lay eggs on land,so they do not need to lay many eggs. Frogs lay so many eggs because as they do not look after their young most do not survive to adulthood. From the three thousand eggs that one female lays, only around five will become adult frog. Frogs laid so many eggs in water to make sure that enough eggs reach to the morality & adulthood 

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    • Posted by Ashutosh Raisane 7 years, 4 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Yogita Ingle 7 years, 4 months ago

    Unicellular organisms: When  all the vital functions which are necessary for life are performed by a single  cell then such cell is called unicellular organism. Some examples of unicellular  organisms are Amoeba, Paramecium etc.
    Amoeba consists of only one cell; hence it is called as unicellular organism. All the functions of this organism are carried by this single cell.

    0Thank You

    ANSWER

    • Posted by Arti Sharma 7 years, 4 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Deepak Yadav 7 years, 4 months ago

    Sperm duct or Vas Deferans.

    0Thank You

    ANSWER

    • Posted by Harsh Kumar 7 years, 4 months ago

    CBSE > Class 08 > Science
    • 2 answers

    Sakshi Gupta 7 years, 4 months ago

    Coal is found deep inside the surface of a earth.

    0Thank You

    Adarsh Jawale 7 years, 4 months ago

    The energy in coal comes from energy that was stored in giant plants that lived hundreds of millions of years ago in swamp forests, even before the dinosaurs! When these giant plants and ferns died, they formed layers at the bottom of the swamps. Water and dirt began to pile up on top of the dead plant remains.

    1Thank You

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    • Posted by Harsh Kumar 7 years, 4 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Adarsh Jawale 7 years, 4 months ago

    The energy in coal comes from energy that was stored in giant plants that lived hundreds of millions of years ago in swamp forests, even before the dinosaurs! When these giant plants and ferns died, they formed layers at the bottom of the swamps. Water and dirt began to pile up on top of the dead plant remains.

    0Thank You

    ANSWER

    • Posted by Pranav Sagare 7 years, 4 months ago

    CBSE > Class 08 > Science
    • 2 answers

    Roshan Raj 7 years, 4 months ago

    Stomata are found under the leaves.

    0Thank You

    Pankaj Singh 7 years, 4 months ago

    leaves

    1Thank You

    ANSWER

    • Posted by Padmavathi. Radhakrishna 7 years, 4 months ago

    CBSE > Class 08 > Science
    • 0 answers
    ANSWER

    • Posted by Yashika Bansal 7 years, 4 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Yogita Ingle 7 years, 4 months ago

    1. Electrolysis is used in industry for the production of many metals and non-metals (e.g., aluminium, magnesium, chlorine, and fluorine).
    2. Electrolysis is commonly employed for coating one metal with another. The method of coating one metal with another using an electric current is called electroplating.
    3. Metals that corrode easily are protected by coating them with a metal that does not corrode easily. Nickel and chromium are widely used in the automobile industry for coating.

    0Thank You

    ANSWER

    • Posted by Aryan Janrao 7 years, 4 months ago

    CBSE > Class 08 > Science
    • 3 answers

    Sagar Sachdeva 7 years, 4 months ago

    Sulphur

    0Thank You

    Abhishek Shinde 7 years, 4 months ago

    Sulphur

    0Thank You

    Selvam Selvam 7 years, 4 months ago

    Sulphur

    9Thank You

    ANSWER

    • Posted by Abhijeet Bhor 7 years, 4 months ago

    CBSE > Class 08 > Science
    • 3 answers

    Sakshi Gupta 7 years, 4 months ago

    Blood is red type of cell which continuously run above the body.

    0Thank You

    Vaishnavi. M Vaishnavi. M 7 years, 4 months ago

    It is a fluid flowing tissue in body and from red pigment it form called blood

    0Thank You

    Sabapathy V 7 years, 4 months ago

    the red liquid that circulates in the arteries and veins of humans and other vertebrate animals, carrying oxygen to and carbon dioxide from the tissues of the body.

    5Thank You

    ANSWER

    • Posted by Sneha Chaudhary 7 years, 4 months ago

    CBSE > Class 08 > Science
    • 2 answers

    Gundu Mama 7 years, 4 months ago

    Some microorganisms are used for the production of daily food items. A few other microorganisms are pathogens (they cause diseases) and are harmful.

    6Thank You

    Aditi R 7 years, 4 months ago

    As most of microbes helps us in daily life and even it cause disease.

    5Thank You

    ANSWER

    • Posted by Aswin Rajesh 7 years, 4 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Yashika Bansal 7 years, 4 months ago

    This force opposes any relative motion between two objects that are in contact with each other

    2Thank You

    ANSWER

    • Posted by Rishank Suhane 7 years, 4 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Mahendiran Prashant 7 years, 4 months ago

    Chapter 5

    3Thank You

    ANSWER

    • Posted by Rohit Pacharne 7 years, 4 months ago

    CBSE > Class 08 > Science
    • 2 answers

    Soumya Pandey 7 years, 4 months ago

    Yes it can be called a combustion as iron react with water & oxygen to produce heat at a slow rate

    1Thank You

    Alen Joy 7 years, 4 months ago

    No

    1Thank You

    ANSWER

    • Posted by Affan Bahadur Shah 7 years, 4 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Selvam Selvam 7 years, 4 months ago

    7

    3Thank You

    ANSWER

    • Posted by Timesh Tayal 7 years, 4 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Meghna Thapar 5 years, 7 months ago

    Algae are a group of oxygenic, phototrophic, eukaryotic microorganisms. Algae have a nucleus, exist as microscopic cells, and generate oxygen through photosynthesis. Algae can grow as single cells, long filaments, or huge aggregates, but there is no tissue differentiation in algal colonies. The most effective thing to do is reduce the number of algae-feeding nutrients. Algae form organic food molecules from carbon dioxide and water through the process of photosynthesis, in which they capture energy from sunlight. In addition to making organic molecules, algae produce oxygen as a by-product of photosynthesis.

    0Thank You

    ANSWER

    • Posted by Esha Nigam 7 years, 4 months ago

    CBSE > Class 08 > Science
    • 3 answers

    Gundu Mama 7 years, 4 months ago

    Mitochondria are known as the powerhouse of the cell as they help in the production of energy.

    0Thank You

    Ayushman Thakur 7 years, 4 months ago

    It is also called the powerhouse of the cell.

    0Thank You

    Veena Joshi 7 years, 4 months ago

    mitocondrai is the power house of the cell

    1Thank You

    ANSWER
    In

    • Posted by Jasmeet Saini 7 years, 4 months ago

    CBSE > Class 08 > Science
    • 0 answers
    ANSWER

    • Posted by Abhijeet Aryan 7 years, 4 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Yogita Ingle 7 years, 4 months ago

    Friction actually depends on the roughness or smoothness of the surfaces of the object. Even some smooth objects that we usually see everyday (ex. glass, mirrorr,etc.) aren't that smooth when magnified by strong microscopes. They still have rough surfaces therefore they can also have friction.

    0Thank You

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    • Posted by Legend _Paul 7 years, 4 months ago

    CBSE > Class 08 > Science
    • 3 answers

    Aditi R 7 years, 4 months ago

    Eukaryotes are organism whose cell have a nucleus enclosed with membranes ,which is well developed and larger in size except bacteria and blue green algaes all are eukaryotic cell

    1Thank You

    Harsh Roy 7 years, 4 months ago

    The cells like onions cells and cheek cell having well organised nucleus with a nuclear membrane are designed are termed as eukaryotic cells eg blue green algae

    1Thank You

    Aryan Gupta 7 years, 4 months ago

    Eukaryotes are organisms whose cells have a nucleus enclosed within membranes, unlike prokaryotes. Eukaryotes belong to the domain Eukaryota or Eukarya. Their name comes from the Greek εὖ and κάρυον.

    3Thank You

    ANSWER

    • Posted by Pavan Y 7 years, 4 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Aryan Yadav 8A 4 years, 7 months ago

    1) By not disposing plastic on the road and water bodies. 2) By using more of natural fibre goods (like cotton, jute bags) than synthetic fibre goods (like polythene). 3) By trying to minimise the use of plastic.

    0Thank You

    ANSWER

    • Posted by Ayush Garg 5 years, 9 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Bharani Kumar 7 years, 4 months ago

    Dhoddj

    0Thank You

    ANSWER

    • Posted by Avinash Khanikar 7 years, 4 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Pankaj Singh 7 years, 4 months ago

    The planters of plant ( many growing in the trees to presetve flora and fauna

    1Thank You

    ANSWER

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