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    • Posted by Shaikh Nilofar 6 years, 10 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Shaikh Nilofar 6 years, 10 months ago

    Negative charge devlops on object when electrons accumulate on it

    1Thank You

    ANSWER

    • Posted by Stuti Srivastava 6 years, 10 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Meghna Thapar 5 years, 6 months ago

    Clouds can charge tall buildings and trees by induction. The buildings and trees thus acquire the opposite charge. If the build up of charge is very heavy, easily flow from cloud to tree or building. Small wooden, vinyl, or metal sheds offer little or no protection from lightning and should be avoided during thunderstorms. There are three main ways lightning enters homes and buildings: a direct strike, through wires or pipes that extend outside the structure and into the ground. As a result, a very heavy charge passes through the air in short time because of the electric discharge and huge amount of energy releases in the form of heat, light and sound. This process is called lightning. When lightning strikes a building or tree, it catches fire because of the huge amount of energy released.

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    • Posted by Stuti Srivastava 6 years, 10 months ago

    CBSE > Class 08 > Science
    • 5 answers

    Mayank Sharma 6 years, 10 months ago

    When sugar is dissolved in water.The solution doesn't conduct electricity because there are no ions in solution

    1Thank You

    Pushp Raj 6 years, 10 months ago

    Electricity cannot pass through sugar solution because sugar is an insulator

    2Thank You

    Dhanish Kothari 6 years, 10 months ago

    Because sugar is poor conductor of electricity

    1Thank You

    Stuti Srivastava 6 years, 10 months ago

    But water is

    0Thank You

    Math Legends 6 years, 10 months ago

    Sugar is a not conductor of electricity

    1Thank You

    ANSWER

    • Posted by Madhuri Adhikarla 6 years, 10 months ago

    CBSE > Class 08 > Science
    • 3 answers

    Nikhil Porwal 6 years, 10 months ago

    if you imagine that there was the verses then you can notice that two stars at the corner passing imagine planned parking to these two stars then you can observe that the parting line is connected with a bright star that will not move to any direction at it is calls pole star

    0Thank You

    Dhanish Kothari 6 years, 10 months ago

    This answer is right

    0Thank You

    Lehakk Garg 6 years, 10 months ago

    look at the two stars at the end of the ursa major. imagine a straight line as passing through the stars. extend this imaginery line towards north direction. this line will led to a star which is not too bright. this is pole star.

    1Thank You

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    • Posted by Jasmitha Do Your Best 6 years, 10 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Style Miracle 6 years, 10 months ago

    Because during lightning a building can fall down because it is near to the clouds when lightning occur the current pass from copper wire to the tin plate which is inside the earth's crust

    1Thank You

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    • Posted by Prakul Dobriyal 6 years, 10 months ago

    CBSE > Class 08 > Science
    • 2 answers

    Style Miracle 6 years, 10 months ago

    Echo

    0Thank You

    Lakhan Singh 6 years, 10 months ago

    Because our voice colide from hills and come to our ears again

    2Thank You

    ANSWER

    • Posted by Badana Lisa 6 years, 10 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Krish Sharma 6 years, 10 months ago

    In this freshly released ovum and sperm are made to fuse. After one week the zygote is transferred to uterus of mother.

    3Thank You

    ANSWER

    • Posted by Varunroy Varun 6 years, 10 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Yogita Ingle 6 years, 10 months ago

    CNG (Compressed Natural Gas) is composed primarily of methane, but may also contain ethane, propane and heavier hydrocarbons. Small quantities of nitrogen, oxygen, carbon dioxide, sulfur compounds, and water may also be found in natural gas.

    1Thank You

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    • Posted by Anugya Vishnoi 6 years, 10 months ago

    CBSE > Class 08 > Science
    • 2 answers

    Pushp Raj 6 years, 10 months ago

    A rapid flow of electric charges through the air between two oppositevly charge clouds seen as an interspark of electric in the sky is called Lightning.

    1Thank You

    Jasmitha Do Your Best 6 years, 10 months ago

    Lightning conductor is a device which is useful to protect building from lightning

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    • Posted by Aryan Salunke 6 years, 10 months ago

    CBSE > Class 08 > Science
    • 3 answers

    Jasmitha Do Your Best 6 years, 10 months ago

    The earthquake is measure from Richter scale

    1Thank You

    Yogita Ingle 6 years, 10 months ago

    • Earthquakes are caused by sudden tectonic movements in the Earth’s crust. The main cause is that when tectonic plates, one rides over the other, causing orogeny collide (mountain building), earthquakes. The largest fault surfaces on Earth are formed due to boundaries between moving plates.
    • The stress increases when they stick, relative motion between the plates. This continues until the stress rises and breaks, suddenly allowing sliding over the locked portion of the fault, releasing the stored energy as shock waves. Such faults are San Andreas fault in San Francisco, Rift valley in Africa etc.

    0Thank You

    Pankaj Srivastava 6 years, 10 months ago

    Disturbence deep inside the earth's crust causes earthquake

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    • Posted by Rakesh Singh 6 years, 10 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Yogita Ingle 6 years, 10 months ago

    • Artificial jewelry, usually made of less expensive metals is often plated with a thin layer of a precious metal like gold and silver to make it more lustrous, appealing but cheaper.
    • Many industrial applications use electroplating to create a protective barrier on a metal substrate. The protective barrier in this case prevents tarnishing and gives a glossy appearance. Eg: Chromium plating is done on car spare parts, taps, wheel rims etc. Chromium is very expensive and the whole part cannot be made of chromium. So, it is coated with chromium to give it a shiny appearance.
    • inning (electroplating of tin) is a very cost-effective electroplating solution. Tin is relatively cheaper  and is used for electroplating electronic components, hardware products, fasteners, screws, nuts, bolts and food cans.
    • Zinc electroplating offers excellent adhesion and resistance to corrosion. So, it is used to electroplate automobile parts and body, transmission components, defense carriers and tanks.

    0Thank You

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    • Posted by Roman Empire 6 years, 10 months ago

    CBSE > Class 08 > Science
    • 3 answers

    Nikhil Porwal 6 years, 10 months ago

    Granule cell it is of five mrometer

    0Thank You

    Lakhan Singh 6 years, 10 months ago

    Spurm cell

    0Thank You

    Krish Sharma 6 years, 10 months ago

    Sperm cell

    1Thank You

    ANSWER

    • Posted by Arun Pandey 6 years, 10 months ago

    CBSE > Class 08 > Science
    • 2 answers

    Style Miracle 6 years, 10 months ago

    Graphite used in lubricating the machine parts

    0Thank You

    Don Singh 6 years, 10 months ago

    Grise

    1Thank You

    ANSWER

    • Posted by Nishant Mishra 6 years, 10 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Pushp Raj 6 years, 10 months ago

    The Big Bang Theory is the leading explanation about how the universe began. At its simplest, it says the universe as we know it started with a small singularity, then inflated over the next 13.8 billion years to the cosmos that we know today. Because current instruments don't allow astronomers to peer back at the universe's birth, much of what we understand about the Big Bang Theory comes from mathematical formulas and models. Astronomers can, however, see the "echo" of the expansion through a phenomenon known as the cosmic microwave background. While the majority of the astronomical community accepts the theory, there are some theorists who have alternative explanations besides the Big Bang — such as eternal inflation or an oscillating universe. The phrase "Big Bang Theory" has been popular among astrophysicists for decades, but it hit the mainstream in 2007 when a comedy show with the same name premiered on CBS. The show follows the home and academic life of several researchers (including an astrophysicist).

    1Thank You

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    • Posted by Prem Kadam 6 years, 10 months ago

    CBSE > Class 08 > Science
    • 3 answers

    Vardaan Lohia 6 years, 10 months ago

    Waste of factories

    1Thank You

    Pushp Raj 6 years, 10 months ago

    The factor responsible for pollution of the river are 1. Chemical waste of industries 2. Chemical water of industries without any treatment 3. Dead Vegetation Example - Dead body

    1Thank You

    Don Singh 6 years, 10 months ago

    Factories and gauter

    1Thank You

    ANSWER

    • Posted by Kshitij Singh 6 years, 10 months ago

    CBSE > Class 08 > Science
    • 5 answers

    Vardaan Lohia 6 years, 10 months ago

    Jupiter has 67 and saturn has 62 so it is clear that jupiter has more satellites

    2Thank You

    Dhanish Kothari 6 years, 10 months ago

    Juputer has 67 and saturn haz 62 satellites so jupiter has more satellites

    0Thank You

    Likhith Arjun 6 years, 10 months ago

    Jupiter has

    1Thank You

    Pushp Raj 6 years, 10 months ago

    Jupiter has large no.of satellites - 67 but Saturn has 62 satellites

    2Thank You

    Utkarsh Mishra 6 years, 10 months ago

    Jupiter 67

    3Thank You

    ANSWER

    • Posted by Koti Korikana 6 years, 10 months ago

    CBSE > Class 08 > Science
    • 0 answers
    ANSWER

    • Posted by Sampath Gynapanaver 6 years, 10 months ago

    CBSE > Class 08 > Science
    • 3 answers

    Vardaan Lohia 6 years, 10 months ago

    No

    1Thank You

    Likhith Arjun 6 years, 10 months ago

    No

    0Thank You

    Mayank Chaudhary 6 years, 10 months ago

    No

    0Thank You

    ANSWER

    • Posted by Math Legends 6 years, 10 months ago

    CBSE > Class 08 > Science
    • 5 answers

    Pushp Raj 6 years, 10 months ago

    Behind,the pupil their is a convex lens which help the image to form on the screen called retina

    2Thank You

    Style Miracle 6 years, 10 months ago

    Ratina is the blind spot of the eye

    2Thank You

    Don Singh 6 years, 10 months ago

    The focuses light on the back of the eye, on a layer called retina

    2Thank You

    Rohit Sahani☺️ 6 years, 10 months ago

    Front part of the eye is known as retina.

    1Thank You

    Math Legends 6 years, 10 months ago

    Tell me

    1Thank You

    ANSWER

    • Posted by Sampath Gynapanaver 6 years, 10 months ago

    CBSE > Class 08 > Science
    • 3 answers

    Mayank Chaudhary 6 years, 10 months ago

    Yes

    1Thank You

    Sampath Gynapanaver 6 years, 10 months ago

    Are all vibrating object produess the sound

    1Thank You

    Vijay Shanker Srivastava 6 years, 10 months ago

    Sound produce by vibration

    2Thank You

    ANSWER

    • Posted by Inayat Shaikh 6 years, 10 months ago

    CBSE > Class 08 > Science
    • 2 answers

    Vardaan Lohia 6 years, 10 months ago

    Bleeding in womans is called mensurlation it occur once in 28 to 30 days

    1Thank You

    Samaira Khan 6 years, 10 months ago

    The period of time in which girls bleed from their ****** is known as mensturation

    2Thank You

    ANSWER

    • Posted by Ravi Meena 6 years, 10 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Meghna Thapar 5 years, 6 months ago

    By Z=3, we mean that the Atomic number (Z) of element is 3.

    It's electronic configuration is 2,1.

    Hence, the valency of this element is 1 since outermost shell has only one electron.

    Therefore the element with Z=3 is Lithium.

    0Thank You

    ANSWER

    • Posted by Ishita Negi 6 years, 10 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Don Singh 6 years, 10 months ago

    Yes, they will attract each other

    1Thank You

    ANSWER

    • Posted by Manoj Verma 6 years, 10 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Shourya Utkarsh 6 years, 10 months ago

    We can say that an electroscope is charged when its leaves(aluminium leaves)are expanded(away from each other than usual)

    0Thank You

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    • Posted by Raunak Raj Raj 6 years, 10 months ago

    CBSE > Class 08 > Science
    • 3 answers

    Pushp Raj 6 years, 10 months ago

    Two forces are used when a rocket is launched 1. Gravitational Force 2. Propelling Force

    1Thank You

    Krishna Gaud 6 years, 10 months ago

    Gravitational force and frictional force

    1Thank You

    Keerthana Keeru 6 years, 10 months ago

    Gravitational force,and propelling force

    2Thank You

    ANSWER

    • Posted by Snehankeet Funde 6 years, 10 months ago

    CBSE > Class 08 > Science
    • 2 answers

    Style Miracle 6 years, 10 months ago

    When a persentage of carbon dioxide is increased it effects green house effect which causes increase in temperature called Global warming

    1Thank You

    Somveer Singh 6 years, 10 months ago

    the increasing temprature of Earth is called global warming

    2Thank You

    ANSWER

    • Posted by Jasmitha Do Your Best 6 years, 10 months ago

    CBSE > Class 08 > Science
    • 2 answers

    Pushp Raj 6 years, 10 months ago

    Red Data Book contains a record of endangered speies and endemic species.

    1Thank You

    Richa Shree 6 years, 10 months ago

    A collection of the information written in a book about the animals who are on the stage on getting extinct is known as red data book.

    1Thank You

    ANSWER

    • Posted by Niharika Jorwal 6 years, 10 months ago

    CBSE > Class 08 > Science
    • 3 answers

    Pawan Kumar 6 years, 10 months ago

    Smog is a harmful gases by the mixture of fog and smoke

    0Thank You

    Pushp Raj 6 years, 10 months ago

    Smog is a harmful gases and a type of pollution, mixture of fog and smoke in air

    2Thank You

    Krishna Kajolika 5 years, 8 months ago

    Smog is a kind of pollution, originally named for the mixture if smoke and fog in air

    2Thank You

    ANSWER

    • Posted by Md Ausaf 6 years, 10 months ago

    CBSE > Class 08 > Science
    • 0 answers
    ANSWER

    • Posted by Srishti Jain 6 years, 10 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Richa Shree 6 years, 10 months ago

    By the x and y chromosomes

    0Thank You

    ANSWER

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