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Glass is a solid. Particles are strong in it. Why it breaks easily ?

Posted by Mohan Das Mohan Das 6 years ago

CBSE > Class 08 > Science

1 answers

Anant Shrivastava 6 years ago

Because glass doesn't contain planes of atoms that can slip past each other, there is no way to relieve stress. Excessive stress therefore forms a crack that starts at a point where there is a surface flaw. Particles on the surface of the crack become separated.

ANSWER

What happens when you have a wound on your skin ? What role does cell division play in healing of a wound

Posted by Anjanai A 6 years ago

CBSE > Class 08 > Science

1 answers

Harsh Gautam 6 years ago

When we have a wound on our body, the skin of that particular place is rubbed off. There is a type of cell present in our blood called Platelets. They heal the wound by covering it with an additional layer of skin.

ANSWER

What is biogas

Posted by Mandar Mander 6 years ago

CBSE > Class 08 > Science

2 answers

Mohit Kumar 6 years ago

When the vegetables are in process of rottening the fruit and veggies release the gas named as bio gas and it is also used as a fuel in rural area and bio gas can be also made by any organic waste

Yogita Ingle 6 years ago

Biogas is a renewable energy source produced by the breakdown of organic matter by certain bacteria under anaerobic conditions. It is a mixture of methane, hydrogen, and carbon dioxide. It can be produced by agricultural waste, food waste, animal dung, manure, and sewage. The process of biogas production is also known as anaerobic digestion.

ANSWER

Define deforestation

Posted by Muzuu Khan 6 years ago

CBSE > Class 08 > Science

9 answers

Preethi Baid 6 years ago

Cutting down of trees in large scale is called deforestation

Gaurav Kumarsingh 6 years ago

Cutting down of trees in large scale is known as deforestions

Anamika Sharma 6 years ago

It may be defined as the cutting of the trees and using that land forcother purposes like settlement of life is called deforestation

Anant Shrivastava 6 years ago

Cutting of trees in a large amount is called deforestation

Himanshu Prasad 6 years ago

cutting down of forest ruthlessely is called deforestation

Manvi Jain 6 years ago

Cutting down of trees in a large number is called deforestation

Uchit Sheoran 6 years ago

F aur k

Avitesh Kumar 6 years ago

Harming the trees or cutting the trees called deforestation. Deforestation should banned.

Rishi Raj 6 years ago

Jahan pairon ko Kat dete Hain aur vah jungle bhi khatm hone lag jaate Hain to usi ko kahate Hain deforestation

ANSWER

What happens if nutrients is increased in the water bodies??

Posted by Dhruthi Dhruthi 6 years ago

CBSE > Class 08 > Science

1 answers

Mandar Mander 6 years ago

Waht is biogas

ANSWER

What is adolsense

Posted by Aryanandkishor Kishor 6 years ago

CBSE > Class 08 > Science

5 answers

Aditya Narayan Singh 6 years ago

The period of life,when the body undergoes changes leading to reproductive maturity is called adolescence.

Harleen Deo 6 years ago

A stage of life when you are neither a child nor an adult. It is also known as teenage and starts at the age of 11 and lasts till 18 years of age. In this period the body undergoes many changes. Adolescents spend much of their time thinking. In this period the mind has highest capacity of learning. HOPE IT HELPS BY HARLEEN

Anamika Sharma 6 years ago

The period of life when the body undergoes many changes leading to reproductive maturity is called adolescence

Sarbjit Dhillon 6 years ago

The period during which the human body undergoes changes leading to reproductive maturity is called adolescence it began the age of 11years and ends between the age 18 to19 years

Aryanandkishor Kishor 6 years ago

Adolsense is teen age

ANSWER

Storytelling on friendly microbes

Posted by Vijay Shilarkar 6 years ago

CBSE > Class 08 > Science

1 answers

Sumit Kumar 6 years ago

Define electrode

ANSWER

Std 3rd what are the uses of clay pots

Posted by Sreelathaktr Sreelathaktr 6 years ago

CBSE > Class 08 > Science

1 answers

Meghna Thapar 5 years, 9 months ago

Clay pots are bought by local people primarily for the purpose of cooking food but also they are bought by weavers to use for their natural dye work. Larger pots are used for making arak which is a strong alcohol distilled from the nectar of the lontar palm.

ANSWER

What are the uses of clay pots

Posted by Sreelathaktr Sreelathaktr 6 years ago

CBSE > Class 08 > Science

1 answers

Meghna Thapar 5 years, 9 months ago

Clay pots are bought by local people primarily for the purpose of cooking food but also they are bought by weavers to use for their natural dye work. Larger pots are used for making arak which is a strong alcohol distilled from the nectar of the lontar palm.

ANSWER

What does the air pressure experiment prove

Posted by Shrushti Karande 6 years ago

CBSE > Class 08 > Science

1 answers

Meghna Thapar 5 years, 10 months ago

The pressure exerted by air around us is known as atmospheric pressure.

Take a good quality rubber sucker. It looks like a small rubber cup. Press it hard on a smooth plane surface. When we press the sucker, most of the air between its cup and the surface escapes out. The sucker sticks to the surface because the pressure of atmosphere acts on it. To pull the sucker off the surface, the applied force should be large enough to overcome the atmospheric pressure. This activity shows the magnitude of atmospheric pressure.

ANSWER

Difine pressure

Posted by Sojaak Chakma 6 years ago

CBSE > Class 08 > Science

5 answers

Aditya Narayan Singh 6 years ago

The force acting on a unit area of a surface is called Pressure. The S.I unit of pressure is Pascal. Pressure: Force/ Area.

Anamika Sharma 6 years ago

The force acting on a unit area of a suffer is called pressure

Rishi Raj 6 years ago

The amount of force applied on an unit area is called pressure

Abijot Sekhon 6 years ago

the amount of force appliedon Area is called PRESSURE

Kinshuk Jain 6 years ago

The amount of force applied on a certain area is known as pressure

ANSWER

Write three ways to control water pollution

Posted by Aayat Malik 6 years ago

CBSE > Class 08 > Science

2 answers

Aryanandkishor Kishor 6 years ago

Save water to save earth

Abijot Sekhon 6 years ago

use water as of use save water close taps while not of any use

ANSWER

What is amniocentesis

Posted by J Bisht 6 years ago

CBSE > Class 08 > Science

1 answers

Meghna Thapar 5 years, 10 months ago

Amniocentesis is a medical procedure used in prenatal diagnosis of chromosomal abnormalities, foetal infections and *** determination.”

ANSWER

Why is called called black gold?

Posted by Sachin Kumar Poddar 6 years ago

CBSE > Class 08 > Science

6 answers

Aditya Narayan Singh 6 years ago

Petroleum is called Black Gold because when crude oil is extracted from the land it is black in color and people call gold because of its oil and value.

Rishi Raj 6 years ago

Petroleum and coal

Aryanandkishor Kishor 6 years ago

Hahaha

Smart Sami 6 years ago

Petrol

Bhola Sankar Swain 6 years ago

Petroleum

Kanimozhi Mohan 6 years ago

Because it is black in colour

ANSWER

Name the micro- organisms that are responsible for these diseases in plants. Rust of wheat and citrus canker.

Posted by Deep Thakur 6 years ago

CBSE > Class 08 > Science

5 answers

Himanshu Prasad 6 years ago

micro organism

Aditya Narayan Singh 6 years ago

Fungi is responsible for rust of wheat disease and Bacteria is responsible for citrus cancer disease.

Amita Yadav 6 years ago

Fungi in rust of wheat

Amita Yadav 6 years ago

Bacteria in citrus canker

Amita Yadav 6 years ago

Mico organisms plant disease Bacteria. Citrus canker Fungi. Rust of wheat

ANSWER

a non metal that conducts electricity is

Posted by Anil Sharma 6 years ago

CBSE > Class 08 > Science

5 answers

Gaurav Kumarsingh 6 years ago

No Non metal is conducts electricity

Himanshu Prasad 6 years ago

copper

Aryanandkishor Kishor 6 years ago

Graphite

Kinshuk Jain 6 years ago

Graphite

Manoj Sharma 6 years ago

No

ANSWER

Short story on taking a walk with friendly microbes

Posted by Deepali Chopra 6 years ago

CBSE > Class 08 > Science

0 answers

ANSWER

What is the definition of cell.

Posted by Neeraj Kumar 6 years, 1 month ago

CBSE > Class 08 > Science

6 answers

Aditya Narayan Singh 6 years ago

Cell is the fundamental and structural unit of organsms life.

Anamika Sharma 6 years ago

Cell are complex structure but represent basic structural and functional unit of all living organisms

Himanshu Prasad 6 years ago

cell is the smallest unit of our body .It is not visible by naked eyes,To see the cell we must use a microscope

Rishi Raj 6 years ago

Sorry organism

Rishi Raj 6 years ago

Basic structural and functional unit of and living organi

Neeraj Kumar 6 years, 1 month ago

Cell is the basic structural and functional unit of life.

ANSWER

A coin is placed at the bottom of a clear glass vessel and observer moves herself to a position where the coin goes just out of sight of her eyes keep her eyes in that position she ask her friend Tu posing water gradually into the class Social what would you observe name the phenomenon involved in this observation draw neat labelled diagram to justify your answer

Posted by Himanshu Prasad 6 years, 1 month ago

CBSE > Class 08 > Science

1 answers

Aayush Awasthi 6 years, 1 month ago

I dont know ???

ANSWER

What is amptitude ?

Posted by Ashi Shakya 6 years, 1 month ago

CBSE > Class 08 > Science

3 answers

Aditya Narayan Singh 6 years ago

The maximum displacement of a vibrating object from its central position is called amplitude.

Himanshu Prasad 6 years, 1 month ago

amplitude is a maximum displacement of the pendulum from the mean position

Utkarsh K 6 years, 1 month ago

The maximum displacement of the pendulum from the mean position is called amplitude

ANSWER

Why do birds have streamlined shape

Posted by Myuuowu M 6 years, 1 month ago

CBSE > Class 08 > Science

4 answers

Netra ? 6 years ago

To reduce the air resistance during flying

Raj Jaiswal 6 years ago

For reducing friction

Himanshu Prasad 6 years, 1 month ago

to fly

Utkarsh K 6 years, 1 month ago

To overcome the force of friction

ANSWER

What do you mean by binnary fassion

Posted by Ncrt Msths 6 years, 1 month ago

CBSE > Class 08 > Science

1 answers

Anamika Sharma 6 years ago

Ameoba reproduce by simple dividing itself in to two this type of asexual reproduction is called binnary fission

ANSWER

Is , chalk a combustible substance ?

Posted by Netra ? 6 years, 1 month ago

CBSE > Class 08 > Science

7 answers

Gaurav Kumarsingh 6 years ago

No

Aryanandkishor Kishor 6 years ago

No

Raj Jaiswal 6 years ago

No

Bhavana Bisht 6 years ago

No

Gayathri M 6 years, 1 month ago

No

Himanshu Prasad 6 years, 1 month ago

no

Ashi Shakya 6 years, 1 month ago

No

ANSWER

What are the similarti between viviporous and oviporous animala

Posted by Pratyush Ranjan Pradhan 6 years, 1 month ago

CBSE > Class 08 > Science

1 answers

Meghna Thapar 5 years, 10 months ago

The animals which give birth to young ones are called viviparous animals. Example – cow, cat, dog and human beings. It is not possible to collect the eggs of a dog, cow or cat because they do not lay eggs. The mother gives birth to the young ones.

Those animals which lay eggs are called oviparous animals. Such animals lay eggs outside their bodies. Example – hen, frog, fish, butterfly, sparrow, etc.

Both viviparous and oviparous animals lay eggs. Viviparous animals lay eggs inside the female body and oviparous animals lay eggs outside the body.

ANSWER

What is sliding, rolling, & static friction what are the examples for it

Posted by Krisha Zala 6 years, 1 month ago

CBSE > Class 08 > Science

1 answers

Bhola Sankar Swain 6 years, 1 month ago

When a body slidis on an another body is called sliding friction. Whea body rolles over another roling body is called as rolling friction. Like that when a boy attached with a another body with static mode is called static friction. SO IT IS HELPFUL OR NOT PLEASE GIVE FORGIVE. ?THANKS?

ANSWER

What is catenation

Posted by Viji Laxmi 6 years, 1 month ago

CBSE > Class 08 > Science

1 answers

Sagarika Das 6 years, 1 month ago

I chemistry, catention is the bonding of atoms of the same element into a series also called a chain

ANSWER

What are the differences between regular and irregular reflection?

Posted by Megha Dutta 6 years, 1 month ago

CBSE > Class 08 > Science

1 answers

Yogita Ingle 6 years ago

Regular reflection:
1. It occurs when parallel beam of incident rays remain parallel after reflection.

2. The reflected rays are reflected in one direction

3. Image formation takes place.

4. Occurs from smooth surfaces like mirror, silver spoon etc.

Irregular reflection.
1. It occurs when parallel beam of incident light doesn’t remain parallel after reflection.

2. The reflected rays are not reflected in one direction

3. Image formation doesn’t take place.

4. Occurs from rough surfaces like wood, table, door, book etc.

ANSWER

All muscle cells is not branched , so whether this statement is true or false:- muscle cells are branched.

Posted by Shivanya Nandan 6 years, 1 month ago

CBSE > Class 08 > Science

1 answers

Himanshu Prasad 6 years, 1 month ago

true

ANSWER

How petroleum formed

Posted by Umapathi Subiksha 6 years, 1 month ago

CBSE > Class 08 > Science

4 answers

Smart Sami 6 years ago

It is actually formed by sea fishes when they all decompose then they form petroleum after millions of years

Naman Kumar 6 years, 1 month ago

Which animal or fish and another insect live in water when they are dead petroleum will be formed

Megha Dutta 6 years, 1 month ago

Petroleum is formrd by the decomposition of dead plants and animals.

Ankit Gupta 6 years, 1 month ago

By decompose dead plants ans animals

ANSWER

What are the effects of force?

Posted by Maruti Desai Desai 6 years, 1 month ago

CBSE > Class 08 > Science

1 answers

Himanshu Prasad 6 years, 1 month ago

displacement of object , chang of object ,change of speed and direction

ANSWER

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