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Why is tungsten bad conductor of electricity even it is used in bulb. Pls explain

Posted by Shlok Katkar 3 years, 5 months ago

CBSE > Class 08 > Science

1 answers

Anshika Agrawal 3 years, 5 months ago

When the filament of the bulb which is made of tungsten is heated due to the high temperature it conducts electricity. Due to high melting point , high temperature doesn't have any adverse effect on it. Due to these characteristics of tungsten , despite being bad conductors of electricity , it is used in bulb

ANSWER

Magnesium (Mg) + Oxygen (O²) →?

Posted by Harshita ✨ 3 years, 5 months ago

CBSE > Class 08 > Science

4 answers

Sia ? 3 years, 5 months ago

Magnesium (Mg) has a '+2 oxidation' state. In order to balance the Oxygen (O₂) in the reactant side of the reaction with the MgO in the product side, we have to add two more moles of MgO in the product side.

Harshita Dogra 3 years, 4 months ago

MgO

Hindu ?? 3 years, 5 months ago

Valency of Magnesium -> +2 Valency of Oxygen -> -2 So +2-2=0 And as magnesium is having positive valency it will sit front then oxygen. So Mg²+ + O²- => MgO

Radhna Bhakti 3 years, 5 months ago

Magnisium oxide

ANSWER

What can lead to waterlogging in crop field?

Posted by Rumi Malakar 3 years, 5 months ago

CBSE > Class 08 > Science

2 answers

Anushka Rathore 3 years, 5 months ago

Water logging is happen when the agriculture field fill with water more than the requirements of plants. It is caused by the heavy rainfall

Meenal Kakadwar 3 years, 5 months ago

Water logging is caused when a field Is watered with more water than needed and also by floods

ANSWER

What is सिलिकॉन

Posted by Rajni Maheshwari 3 years, 5 months ago

CBSE > Class 08 > Science

1 answers

Sia ? 3 years, 5 months ago

Silicon is a chemical element with the symbol Si and atomic number 14. It is a hard, brittle crystalline solid with a blue-grey metallic lustre, and is a tetravalent metalloid and semiconductor. It is a member of group 14 in the periodic table: carbon is above it; and germanium, tin, lead and flerovium, are below it.

ANSWER

State the role of biosphere reserve

Posted by Samriddhi Yadav 3 years, 5 months ago

CBSE > Class 08 > Science

1 answers

Sia ? 3 years, 5 months ago

Biosphere reserve :
Biosphere reserves are areas comprising terrestrial, marine and coastal ecosystems. Each reserve promotes solutions reconciling the conservation of biodiversity with its sustainable use.
Biosphere reserves are ‘Science for Sustainability support sites’ – special places for testing interdisciplinary approaches to understanding and managing changes and interactions between social and ecological systems, including conflict prevention and management of biodiversity.
Biosphere reserves are nominated by national governments and remain under the sovereign jurisdiction of the states where they are located. Their status is internationally recognized.

ANSWER

Identify the device attached to the tractor and state it's use

Posted by Pranshi Raghav 3 years, 5 months ago

CBSE > Class 08 > Science

1 answers

Rishika Singh 3 years, 5 months ago

Ashish

ANSWER

Which bacteria present in probiotics

Posted by Aswini Kapardar 3 years, 5 months ago

CBSE > Class 08 > Science

2 answers

Harbir Singh 3 years, 5 months ago

Ryt answer

Archisha Mishra 3 years, 5 months ago

Probiotics may contain a variety of microorganisms. The most common are bacteria that belongs to groups called lactobacillus and bifidobacterium.

ANSWER

If force a scaler or a vector

Posted by Stuti Tripathi 3 years, 5 months ago

CBSE > Class 08 > Science

3 answers

Anushka Rathore 3 years, 5 months ago

Vector

B Ashwita 3 years, 5 months ago

Agriculture

Anmol Preet 3 years, 5 months ago

Vector

ANSWER

What is monomer

Posted by Abcd Efgh 3 years, 5 months ago

CBSE > Class 08 > Science

5 answers

Sia ? 3 years, 5 months ago

A monomer is a molecule that can react together with other monomer molecules to form a larger polymer chain or three-dimensional network in a process called polymerization.

Anushka Rathore 3 years, 5 months ago

When the polymers are join together to form a monomer. And this process is known as polimarisation

Rishabh Srivastava 3 years, 5 months ago

A monomer are the molecules which together form a chain called polymer

Anmol Preet 3 years, 5 months ago

A molecule that can be bonded to other identical molecules to form a polymer

Muntun Kumar 3 years, 5 months ago

It is a molecule.

ANSWER

Inadequate intake of food leads to

Posted by Mothish Kanna 3 years, 5 months ago

CBSE > Class 08 > Science

0 answers

ANSWER

What is the meaning of soil erosion and depletion (in easy)

Posted by Deepak Kumar 3 years, 5 months ago

CBSE > Class 08 > Science

3 answers

Anushka Rathore 3 years, 5 months ago

The removal of top layer of soil by naturally or physically

Radhna Bhakti 3 years, 5 months ago

Removal of top layer of soil

Sia ? 3 years, 5 months ago

Soil erosion is a gradual process of movement and transport of the upper layer of soil (topsoil) by different agents – particularly water, wind, and mass movement – causing its deterioration in the long term.
Increased expenditure has caused a depletion in our capital/funds.

ANSWER

Density of Mercury

Posted by Shashank Singh Suryavanshi 3 years, 5 months ago

CBSE > Class 08 > Science

3 answers

Archisha Mishra 3 years, 5 months ago

13.534 g/cm3

Shashank Singh Suryavanshi 3 years, 5 months ago

13.6g

Shashank Singh Suryavanshi 3 years, 5 months ago

I will send the answer later .... You answer before that

ANSWER

Research and find out what changes were brought about after the invention of Petoroleum/Crude Oil?

Posted by Priyanshu Singh 3 years, 5 months ago

CBSE > Class 08 > Science

0 answers

ANSWER

Give two reason for why metal is choosen for utensils

Posted by Glaxy Gulfraz 3 years, 5 months ago

CBSE > Class 08 > Science

3 answers

Sia ? 3 years, 5 months ago

Metals are used to cook food to make cooking utensils because metals are good conductors of heat and electricity. Since , metal is a good conductor of heat then we can cook food faster whereas non metals are bad conductors so they are not used to make utensils.

Radhna Bhakti 3 years, 5 months ago

Metals are good conductors of heat. While cooking heat passes through them so food is cooked.

Roma Gujjar 3 years, 5 months ago

Metals are used to cook food to make cooking utensils because metals are good conductors of heat and electricity. Since , metal is a good conductor of heat then we can cook food faster whereas non metals are bad conductors so they are not used to make utensils.

ANSWER

Q-1. Express in your words that what will happen if metals and non metals are not there?

Posted by Rachna Bhagat 3 years, 5 months ago

CBSE > Class 08 > Science

2 answers

Rachna Bhagat 3 years, 5 months ago

Thanks

Sonam Kumari 3 years, 5 months ago

When metals react with non-metals, electrons are transferred from the metal atoms to the non-metal atoms, forming ions. The resulting compound is called an ionic compound. Explanation: igorously, if you mean "no metallic elements", then none of us would exist.

ANSWER

Processing raw cotton into a t-shirt is an example of ________ resources

Posted by Arya Patil__ 3 years, 6 months ago

CBSE > Class 08 > Science

3 answers

Arya Patil__ 3 years, 5 months ago

Thank you

Meenal Kakadwar 3 years, 5 months ago

Human resource

Meenal Kakadwar 3 years, 5 months ago

Human made

ANSWER

Two forces act on an object in the same direction, and then in opposite directions. What will be the net force on the object in each of the two cases? chapter- force and pressure class 8

Posted by Prachi Pumnani 3 years, 6 months ago

CBSE > Class 08 > Science

1 answers

Fatima Khan 3 years, 5 months ago

The two forces acting on an object in the same direction will double the force whereas the two forces acting in opposite directions will be Nil.If the forces are equal

ANSWER

Is any force present between sun and celestial bodies present in our solar system? If yes, Name the force.

Posted by Namrata Gupta 3 years, 6 months ago

CBSE > Class 08 > Science

1 answers

Fatima Khan 3 years, 5 months ago

Yes, That's Gravitational Force

ANSWER

Why cell is called the structural and functional unit of lifr

Posted by Arpit Kumar 3 years, 6 months ago

CBSE > Class 08 > Science

4 answers

Harshita Dogra 3 years, 4 months ago

Cell :- Cell is a basic structural and functional unit of living organism . Because it provides a definite shape to the body .

Roma Gujjar 3 years, 5 months ago

The cell is called the structural and functional unit of life as all living organisms are made up of cells. Cells are also essential for performing various life processes required for sustaining life. Furthermore, cells provide form and structure, process nutrients and convert them into useable energy

Namrata Gupta 3 years, 6 months ago

The cell is called the structural and functional unit of life as all living organisms are made up of cells. Cells are also essential for performing various life processes required for sustaining life. Furthermore, cells provide form and structure, process nutrients and convert them into useable energy.

Arpit Kumar 3 years, 6 months ago

Because all all the living beings is made up of cell . Is is also called interdependent so sell is called the basic unit of life

ANSWER

Write difference between insecticide, pesticide, fungicide and rodenticide.

Posted by Maulee Rana 3 years, 6 months ago

CBSE > Class 08 > Science

1 answers

Kanu Choudhary 3 years, 6 months ago

Insecticide are used for protection from insects. Pesticides are used for protection from pests. Fungicide are used for protection from fungi. Rodenticide are used for protection from pests like rats mice etc.

ANSWER

Teachers,students what is this sericulture can anyone explain

Posted by Dhanyapnarayanan P 3 years, 6 months ago

CBSE > Class 08 > Science

4 answers

Archisha Mishra 3 years, 5 months ago

The rearing of silkworm for the production of silk is called sericulture.

Radhna Bhakti 3 years, 6 months ago

The rearing of silk is called sericulture

Diksha Arora 3 years, 6 months ago

the production of silk and the rearing of silkworms is sericulture

Roma Gujjar 3 years, 6 months ago

The rearing of silk worm is called sericulture

ANSWER

Explain the term sowing Anyone send me a short answer

Posted by Kanupriya Kanwat 3 years, 6 months ago

CBSE > Class 08 > Science

5 answers

Anushka Rathore 3 years, 5 months ago

The process of putting seeds in soil is called sowing

Kanu Choudhary 3 years, 6 months ago

The process of sow seeds in the soil called sowing

Kashish Solanki 3 years, 6 months ago

Sowing is the process in which we sow seeds in the soil. And it is the second practice in the process of agriculture.

Mariya Hasan 3 years, 6 months ago

The term sowing means to Sow the seed in the soil and the selection process of good and bad seeds .

Krishna Verma 3 years, 6 months ago

Sowing means put seeds into the soil Or in hindi Beej bonna

ANSWER

Whydo msot farmers remove weed from the crop field?

Posted by Bhanu Kashyap 3 years, 6 months ago

CBSE > Class 08 > Science

4 answers

Archisha Mishra 3 years, 5 months ago

Most farmers remove the weeds from the crop field because: 1) Weeds are harmful for the plants. 2) They compete with the crop plant for sunlight, water and minerals.

Mahi Sarda 3 years, 5 months ago

Farmer kill weeds because weeds are harmful for plants

Roma Gujjar 3 years, 6 months ago

Because weeds absorb the space and nutrients of crop

Prasun Kumar 3 years, 6 months ago

Because the weeds compete for nutrients from main crop

ANSWER

Our role in air Pollution

Posted by Savita Kadam 3 years, 6 months ago

CBSE > Class 08 > Science

2 answers

Roma Gujjar 3 years, 6 months ago

I mean factory

Roma Gujjar 3 years, 6 months ago

We make so many things that pollute the environment like car factoriea

ANSWER

10 slogans for avoiding plastics.

Posted by Sagarika Parida 3 years, 6 months ago

CBSE > Class 08 > Science

2 answers

Nikita And Pratik 3 years, 6 months ago

Please give me thanks if this helpful to doctors .

Nikita And Pratik 3 years, 6 months ago

Eating plastic animals died, seeing plastic nature cried. So say no to plastics! If you are ‘Fantastic’ then do something ‘Drastic’ to cut the ‘Plastic’ Don’t be drastic; Say NO to plastic. Go green, no plastic, every thing is fantastic. Plastic bag is a death bag. Use paper bag reduce plastic bag. You will die and degrade, but the plastic you throw will never degrade! Less Plastic. More Life. Save our best friend earth from the plastic. Be a gentle man use paper bag discard plastic bag. Less plastic, clean earth healthy animal and human. Stop bagging the planet – say NO to plastic bags.

ANSWER

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Posted by Ayush Rana 3 years, 6 months ago

CBSE > Class 08 > Science

2 answers

Ananya Tikait 3 years, 6 months ago

Their

Yasdeep Ror 3 years, 6 months ago

Ayush and Archit visited____ aunt in Chandigarh

ANSWER

What is the meaning of acrylic

Posted by Simranpreet Kaur 3 years, 6 months ago

CBSE > Class 08 > Science

5 answers

Simranpreet Kaur 3 years, 2 months ago

Thanku

Roma Gujjar 3 years, 6 months ago

It is a synthetic which is said to be artificial wool

Radhna Bhakti 3 years, 6 months ago

It's a synthetic fibre which is said to be artificial wool

Nikita And Pratik 3 years, 6 months ago

A synthetic Fabric which is artificial wool

Aditya Raj 3 years, 6 months ago

An artificial material that is used in making clothes and paint.

ANSWER

What is full form of pvc

Posted by Reva Gaur 3 years, 6 months ago

CBSE > Class 08 > Science

5 answers

Archisha Mishra 3 years, 5 months ago

The full form of pvc is Polyvinyl chloride.

Roma Gujjar 3 years, 6 months ago

Pipe polyvinyle chloride

Snehal Patil 3 years, 6 months ago

Explain how fertilisers are different from manure

Savita Kadam 3 years, 6 months ago

It use to water service pipe Polyvinly chloride

Nikita Gill 3 years, 6 months ago

Polyvinyl chloride

ANSWER

Name the method of sowing paddy crop

Posted by Vanshika Dutt 3 years, 6 months ago

CBSE > Class 08 > Science

2 answers

Surbhi Somvanshi 3 years, 6 months ago

A seed drill is a long iron tube having a funnel at the top. The seed drill is tied to back of the plough and seeds are put into the funnel of the seed drill.As the plough makes furrows in the soil,the seed from seed drill are gradually released and sown into the soil.

Tulja Sahu 3 years, 6 months ago

Answer is in your question Sowing

ANSWER

Air. composition of air

Posted by Savita Kadam 3 years, 6 months ago

CBSE > Class 08 > Science

1 answers

Surbhi Somvanshi 3 years, 6 months ago

Air is mostly gas The air in Earth's atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen. Air also has small amounts of lots of other gases, too, such as carbon dioxide, neon, and hydrogen.

ANSWER

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