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Candle Wax Combustion The heat of the flame vaporizes the wax molecules and they react with the oxygen in the air. As wax is consumed, capillary action draws more liquid wax along the wick. As long as the wax doesn't melt away from the flame, the flame will consume it completely and leave no ash or wax residue.

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Difference between zoo and wildlife sanctuary

Posted by Shashwat Singh 5 years, 11 months ago

CBSE > Class 08 > Science

1 answers

Sia ? 5 years, 11 months ago

Zoo	Wildlife Sanctuary
1.A place where animals are protected in their natural habitat.	1.The area that are reserve in a forest for the protection and preservation of wild animals.
2. Small areas	2. Large protected areas
3. Created artificial environment	3. Natural habitat of wild life
4. Animals are kept for the purpose of public enjoyment, education and conserving endangered animals at small scale.	4.Mainly serve the purpose of conserving wild life away from human disturbance and activities.

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what makes a ball thrown up into the air fall back to the ground?

Posted by Kaushlendra Singh 5 years, 11 months ago

CBSE > Class 08 > Science

2 answers

Alqama Khatoon 5 years, 11 months ago

Gravity

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Archana Bhandari 5 years, 11 months ago

Gravitational force

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What is ref data book

Posted by Akashdeep Bajpai 5 years, 5 months ago

CBSE > Class 08 > Science

2 answers

Alqama Khatoon 5 years, 11 months ago

It is a source of book in which there is all the record of endangered plants and animals

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???Mansu ??? ?Raj? 5 years, 11 months ago

It is red data book.Here we can see records of animal of any country.Like if you discovered a new animal that has not be seen anywhere you can inform to the incharge of RBD function.It told us the numbers of animals in country.If more dought please inform it to me. Thanku by....??

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What is meant by lysosome

Posted by Dibyanshu Singh 5 years, 11 months ago

CBSE > Class 08 > Science

2 answers

Neena Arora 5 years, 11 months ago

Lysosomes are also called sucide bags and they also help in cellular digestion.

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Alqama Khatoon 5 years, 11 months ago

Sucide bags

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Name the different agricultural practices in the correct sequence

Posted by Laxmikant Pandey 5 years, 11 months ago

CBSE > Class 08 > Science

1 answers

Yogita Ingle 5 years, 11 months ago

These are ...
1) Preparation of seeds by ploughing .,
2} Sowing ,
3) Adding manure and fertilisers ,
4) Irrigation ,
5) Removal of weeds, by weeding
6) Harvesting, and
7) Storage of food grains.

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Fossil fuels are____________,________,and _________

Posted by Shyamala N 5 years, 11 months ago

CBSE > Class 08 > Science

2 answers

Om Kumar 5 years, 11 months ago

Petroleum, coal and natural gas????

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Nanda Nanda 5 years, 11 months ago

Petroleum, coal and natural gas

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What are different modes of combistion in flame

Posted by Devika Gupta 5 years, 11 months ago

CBSE > Class 08 > Science

1 answers

Yogita Ingle 5 years, 11 months ago

There are three types of combustion which are as follows-

Spontaneous
Rapid
Explosive

Spontaneous combustion

It is combustion that occurs at room temperature on its own. It is shown by substances that have an ignition temperature less than room temperature. For example: Burning of yellow phosphorous. In summers, Yellow phosphorous catches fire itself even at room temperature.

Rapid Combustion

It occurs rapidly, evolving a lot of heat and light in a short period of time. For example: LPG( Liquified Petroleum Gas), Kerosene oil, Coal etc. Example: Bring a burning matchstick or a gas lighter near a gas stove in the kitchen. Turn on the knob of the gas stove. We find that the gas burns rapidly and produces heat and light.

Explosive Combustion

It is the combustion that occurs extremely fast with release of heat and light and also loud sound. For example: Crackers.

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Who are Extinct Species

Posted by Nisha Maurya 5 years, 11 months ago

CBSE > Class 08 > Science

3 answers

Bimal Pillai 5 years, 11 months ago

Species which we cannot see anymore

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Sparsh Koul 5 years, 11 months ago

Dodo

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Archana Bhandari 5 years, 11 months ago

Elephant,tiger,redpanda,rino

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Extinct species

Posted by Nisha Maurya 5 years, 11 months ago

CBSE > Class 08 > Science

2 answers

Lekha✌️ Kumari? 5 years, 11 months ago

The species which are finished from this world are known as extinct species. Eg. dodo , dinosours etc.

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Devika Gupta 5 years, 11 months ago

The species of plants and animals that are no more in this world is called extinct species....for eg....dinasaurs

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Why the utensils get black

Posted by Ajit Singh 5 years, 11 months ago

CBSE > Class 08 > Science

1 answers

???Mansu ??? ?Raj? 5 years, 11 months ago

For normal cooking utensils ( not of copper), blackening of pots is due to- A gas stove might turn your pots black if it is not heating evenly or if the heat is turned up too high. ... But for copper utensils- Oxidization, a chemical reaction between copper and oxygen, can turn a copper pot black.

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Life cycle of a frog

Posted by Pranjal Srivastava 5 years, 11 months ago

CBSE > Class 08 > Science

3 answers

Satyam Nigam 5 years, 11 months ago

Egg.......early tadploe.......late tadpole.......in the process of metaphorosis.......young frog........frog

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Devika Gupta 5 years, 11 months ago

Egg.....early tadpole......late tadpole......adult

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Sonia Bakshi 5 years, 11 months ago

Egg - tadpole(larva) - late tadpole - adult frog

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Science project

Posted by Raja Rao Medara 5 years, 11 months ago

CBSE > Class 08 > Science

1 answers

Pranjal Srivastava 5 years, 11 months ago

What is ur science project.??

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What are the types of fuel

Posted by Keerthi Vasan 5 years, 11 months ago

CBSE > Class 08 > Science

1 answers

Yogita Ingle 5 years, 11 months ago

Fuels can be generally classified into two factors:

On the basis of their fuels state:
- Solid Fuels
- Liquid Fuels
- Gaseous Fuels
On the basis of their occurrence:
- Natural Fuels
- Artificial Fuels

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What is asexual

Posted by Prashu Tomar 5 years, 11 months ago

CBSE > Class 08 > Science

2 answers

Satyam Nigam 5 years, 11 months ago

Asex means not *** , *** has done between two parents but it has done between only one parent.so,it is called asexual reproduction

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Pranjal Srivastava 5 years, 11 months ago

Asexual reproduction involves the production of genetically identical organism from a single parent

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Asexual

Posted by Prashu Tomar 5 years, 11 months ago

CBSE > Class 08 > Science

1 answers

Ansh Tiwari 5 years, 11 months ago

A mode of reproduction in which single parent involved are called asexual reproduction

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Wahat is nitrogen cycle

Posted by Krish Raj 5 years, 11 months ago

CBSE > Class 08 > Science

1 answers

Radhika Sharma✌️✌️ 5 years, 11 months ago

the series of processes by which nitrogen and its compounds are interconverted in the environment and in living organisms, including nitrogen fixation and decomposition.

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Trace the sequence of events that lead to development of a chick from the fertilised egg of a hen

Posted by Puskar Raj 5 years, 11 months ago

CBSE > Class 08 > Science

1 answers

Meghna Thapar 5 years, 2 months ago

In hen fertilization is internal and the development of their young ones take place outside of the body of female.After fertilization zygote is started dividing and moves where a number of protective layer get from around it the egg shell is one of these layer the egg cell is made up of calcite.The embryo develop inside the egg in 21 days this is incubation period of egg. During this period specified temperature is provided by the hen by sitting on the eggs finally the cell breaks down and chicks come out .

Read more on Brainly.in - https://brainly.in/question/6287955#readmore

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Different between the coal and fasule fuel

Posted by Kailash Paraja 5 years, 11 months ago

CBSE > Class 08 > Science

1 answers

Pranjal Srivastava 5 years, 11 months ago

Search on google

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Why pure water do not conduct electricity

Posted by Alok Kumar 5 years, 11 months ago

CBSE > Class 08 > Science

1 answers

Yogita Ingle 5 years, 11 months ago

Pure water cannot conduct electricity, because it does not contain ions. Because of diluting pure water with acid or a base or a salt, because they produce ions due to the dilution.

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How can we see microorganisms without microscope in biodiversity

Posted by Shivani Arora 5 years, 11 months ago

CBSE > Class 08 > Science

4 answers

Radhika Sharma✌️✌️ 5 years, 11 months ago

Most bacteria are too small to be seen without a microscope, but in 1999 scientists working off the coast of Namibia discovered a bacterium called Thiomargarita namibiensis (sulfur pearl of Namibia) whose individual cells can grow up to 0.75mm wide.

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Amogh Raj 5 years, 11 months ago

Curd

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Manish Samria 5 years, 11 months ago

Hen egg

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Ankita Dash Dash 5 years, 11 months ago

i don't know ......

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New tyres are more treated as compared to old tyres.why?

Posted by Laxmi Sojitra 5 years, 11 months ago

CBSE > Class 08 > Science

1 answers

Aryan Ranavat 5 years, 11 months ago

I don't know

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The following table show that the total power of shortage in India from 1991 to 1997 show the data in the form of a graph fastest percentage for the years on y-axis and the year on the x-axis

Posted by Abhishek Bhardwaj 5 years, 11 months ago

CBSE > Class 08 > Science

0 answers

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Deforestation natural habitat of animals

Posted by Samareddi Tejaswanth Tinku 5 years, 11 months ago

CBSE > Class 08 > Science

1 answers

Meghna Thapar 5 years, 7 months ago

Deforestation means clearing of forests and using that land for other purposes. Forests are the natural habitat of animals. Deforestation leads to the extinction of many wild animals and plants.

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mention one use ofbitumen

Posted by Satish Sarade 5 years, 11 months ago

CBSE > Class 08 > Science

4 answers

Alqama Khatoon 5 years, 11 months ago

Surfacing road

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Puneet Verma 5 years, 11 months ago

To make roads

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Satwik Sharma 5 years, 11 months ago

It is used for making road surfaces

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Sia ? 5 years, 11 months ago

The primary use (70%) of asphalt is in road construction, where it is used as the glue or binder mixed with aggregate particles to create asphalt concrete. Its other main uses are for bituminous waterproofing products, including production of roofing felt and for sealing flat roofs.

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Define constellation

Posted by Debasmita Deb 5 years, 11 months ago

CBSE > Class 08 > Science

1 answers

Yogita Ingle 5 years, 11 months ago

A group of stars which resembles certain shape is called a constellation. Human beings have an innate ability to recognize shapes and faces even in formless things; like clouds, smoke, etc. This ability of human beings has given rise to various constellations. Different constellations may have different names in various cultures. There are twelve signs of zodiac, viz. Aries, Taurus, Gemini, Cancer, Virgo, Leo, Libra, Scorpio, Capricorn, Sagittarius, Aquarius and Pisces. There are numerous other constellations, e.g. Great Bear, Cassiopeia, Ursa Minor, Orion, etc.

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Law of light

Posted by Pathan Tosif 5 years, 11 months ago

CBSE > Class 08 > Science