CBSE > Class 08 > Science | CBSE Board | Homework Help

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ANSWER

Explain the process of nitrogen cycle

Posted by Monalisa Parvin 2 years ago

CBSE > Class 08 > Science

1 answers

Sonam Kumari 1 year, 11 months ago

Nitrogen Cycle is a biogeochemical process through which nitrogen is converted into many forms, consecutively passing from the atmosphere to the soil to organism and back into the atmosphere. It involves several processes such as nitrogen fixation, nitrification, denitrification, decay and putrefaction.

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ANSWER

Who is pole star?

Posted by Piyush S 2 years ago

CBSE > Class 08 > Science

1 answers

Mahalaxmi Medi 2 years ago

North Star and the star which enters at North side

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ANSWER

What is the difference between winnowing and threshing ?

Posted by यश वर्मा 18 2 years ago

CBSE > Class 08 > Science

4 answers

Sonam Kumari 1 year, 11 months ago

Threshing: Pounding the sheaves against the wooden bars is performed to remove the grains from the stalks. Winnowing: This is the method of separating the unpleasant husk from food

2Thank You

Harmeet Kaur 2 years ago

The process of separating grains and husk form the harvested crop is called threshing . whereas , the process of separating the hay and chaff from grains with the help of wind is called winnowing

2Thank You

Mahalaxmi Medi 2 years ago

Threshing is removed grains by beating on hard surfaces and winnowing is removed husk

1Thank You

यश वर्मा 18 2 years ago

Good

2Thank You

ANSWER

Why do women apply soap solution on their hands to put on bangles?

Posted by Piyush S 2 years ago

CBSE > Class 08 > Science

1 answers

Arav Panakanti 2 years ago

Women apply soap solution before wearing bangles because the soap solution reduces friction by which women can wear bangles easily without any pain.

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ANSWER

Lpg is a better domestic fuel than wood

Posted by Lekhraj Gurjar 2 years ago

CBSE > Class 08 > Science

3 answers

Sonam Kumari 1 year, 11 months ago

True

0Thank You

Kate Kaur 2 years ago

Because it can be used in homes through pipes and is easy to transport and store

1Thank You

Lekhraj Gurjar 2 years ago

Lpg is a better domestic fuel than wood

1Thank You

ANSWER

Categories the material of the following products in to can recycles andcannotbe recycled

Posted by Ekamdeep Singh Nehwal 2 years ago

CBSE > Class 08 > Science

2 answers

Amit Kumar Bairwa 2 years ago

Renewable and non renewable resources

0Thank You

Kapil Raj Gautam 2 years ago

What is combution

3Thank You

ANSWER

What are weeds and how can we control them

Posted by Ayush Raj 2 years ago

CBSE > Class 08 > Science

4 answers

Lavika Arora 1 year, 11 months ago

Unwanted plants that are grown between the main plants are called weeds. We can control them by spraying weedicides.

0Thank You

Shubhi Singh 2 years ago

Weed are unwanted plants that grow along with our main crops . We can control weed by spreading weedacid it is a camical substance that used to control weed . It not harm the main crop . Farmer should cover there mouth and nose with a cloth.

0Thank You

Rashi Patel 2 years ago

Weeds are the unwanted plants that grow between the main crop and fight for sunlight water and nutrients We can prevent them by •spraying weedisides •cutting them manually

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Raaz Bhai 2 years ago

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ANSWER

Why smoke is harmful for us

Posted by Piyush S 2 years ago

CBSE > Class 08 > Science

3 answers

Sagar Marwade 2 years ago

Due to the heat or CO2 gases are released

2Thank You

Itz Singh 2 years ago

Due to the heat or CO2 gases are released

2Thank You

Prakasha Prakash 2 years ago

Due to the heat or CO2 gases are released

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ANSWER

Give two differences between a zygote and a foetus.

Posted by आयुष सिंह 2 years ago

CBSE > Class 08 > Science

0 answers

ANSWER

Write an experiment to show the pressure exerted by the same side and pressure exerted by the different side

Posted by Garima Banthia 2 years ago

CBSE > Class 08 > Science

0 answers

ANSWER

Mineral are (a) in exhaustible natural resource (b) all of these (c) natural resource (d) exhaustible natural resource

Posted by Aaliya Eqbal 2 years ago

CBSE > Class 08 > Science

4 answers

Aditya Goswami 2 years ago

(d) exhaustible natural resource

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Meet Patil 2 years ago

1Thank You

Janvi Singh 2 years ago

Option c

3Thank You

Viresh Patil 2 years ago

3Thank You

ANSWER

Explain the methods to increase or reduce friction

Posted by Jivitesh Saloi 2 years ago

CBSE > Class 08 > Science

5 answers

Mahalaxmi Medi 2 years ago

Increase the friction is shoe spikes and motor cycle and scooter tyre and low friction is oil or coarse substance used in gymnastics and soap

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Meet Patil 2 years ago

Do sand blasting on surface to increase friction

1Thank You

Meet Patil 2 years ago

Apply oil on surface too reduce friction

1Thank You

Pratika Singh Pratika Singh 2 years ago

Please answer these questions

2Thank You

Pratika Singh Pratika Singh 2 years ago

What type of bacteria produce insulin

2Thank You

ANSWER

What reproduction

Posted by Sukhdilinder Singh 2 years ago

CBSE > Class 08 > Science

2 answers

Aditya Goswami 2 years ago

The process of giving birth to young ones is called reproduction

1Thank You

Hia ❤️ 2 years ago

The process reproducing new individuals is known as reproduction

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ANSWER

What is mean by flame

Posted by Deenathayalan S 2 years, 1 month ago

CBSE > Class 08 > Science

5 answers

Aditya Goswami 2 years ago

A flame is a zone where the burning of gases or vapour takes place producing light and heat

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Meet Patil 2 years ago

Flame is a region in which combustion takes place

0Thank You

Mr Mystery 2 years ago

The substances which have very low ignition temperature and can easily catch fire with a flame are called flame

2Thank You

Aashna Meena 2 years ago

Explain electrochemical behaviour of metal and non metals

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Arshad Mansoori 2 years ago

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2Thank You

ANSWER

What happens if you experience too much pressure. Per say too much atmosphere pressure

Posted by Kavin Pachiappan 2 years, 1 month ago

CBSE > Class 08 > Science

0 answers

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?

Posted by Neeti Singh 2 years, 1 month ago

CBSE > Class 08 > Science

5 answers

Harshit Kumar 2 years ago

There were no force in it because they are equally forcing the object that cancel out the force

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Meet Patil 2 years ago

Zero

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Ritik Singh 2 years ago

O because each force cancel each other

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Lakhwinder Singh 2 years ago

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Daksh Verma 2 years ago

Who is coal formed

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ANSWER

Prepare a short report ( 100-150 words) on history of Antibiotics, types of Antibiotics and which microorganism s are used to prepare the vaccines. Describe the functions of Antibiotics in maintaining our health. Also visit a doctor and find out why anti biotics should not be over-used. Summaries your findings

Posted by Ishita Mehra 2 years, 1 month ago

CBSE > Class 08 > Science

1 answers

Raj Sahu 2 years ago

Don't post personal information, mobile numbers and other details.
Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
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1Thank You

ANSWER

What is called to crop which grow in summer season

Posted by Ekansh Panda 2 years, 1 month ago

CBSE > Class 08 > Science

5 answers

Raghav Agarwal 2 years ago

खरीफ crop

0Thank You

Diya Sarma 2 years ago

Kharif crops

1Thank You

Madhur Singhani 2 years, 1 month ago

Hii

1Thank You

Bhagyashri. Patil 2 years, 1 month ago

Kharif crop

1Thank You

Aryan Singh Rajput 2 years, 1 month ago

Kharif crops

1Thank You

ANSWER

What is irrigation? Describe two methods of irrigation which conserve water

Posted by Hanamant Kuri 2 years, 1 month ago

CBSE > Class 08 > Science

5 answers

Lavika Arora 1 year, 11 months ago

The supply of water to the plants at the regular interval through a source other than a rain is called irrigation.Two methods of irrigation are drip system and sprinkler system

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Shubhi Singh 2 years ago

The process of supplying water at specific interval of time is called as irrigation. Two mothods of irrigation which conserve water is . Drip system Sprinkler system

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Bijjam Sai Harithra 2 years ago

Irrigation is nothing but supply of water to the plants.There are two types of methods in Irrigation: Drip Irrigation and sprinkler system

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Paras Chamoli 2 years ago

The supply of water at a specific interval of time is known as irrigation modern method of irrigations (1) drip system (2) sprinkler system

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Ekansh Panda 2 years, 1 month ago

The supply of water at specific interval of time is known as irrigation. Drip irrigation conserves more water

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ANSWER

If we say that a virus is 30 to 50 mm so what is the value of NM because I don't know exam so please help

Posted by Mishti Choudhary 2 years, 1 month ago

CBSE > Class 08 > Science

0 answers

ANSWER

Calculate the area is the pressure of box is 900 Pascal and the force is 450 Newton

Posted by Shivang Ahuja 2 years, 1 month ago

CBSE > Class 08 > Science

5 answers

Mahalaxmi Medi 2 years ago

Pressure=force/area 900/450=2

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Siddesh Gadre 2 years, 1 month ago

405000 m sq because area = force×pressure

0Thank You

Poonam Verma 2 years, 1 month ago

Mujhe ek doubt hai

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Poonam Verma 2 years, 1 month ago

Sorry

1Thank You

Poonam Verma 2 years, 1 month ago

Hcjczxciysrgifyrdv8d-zsyk

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ANSWER

The crops that are sown in the winter season are called

Posted by Divyansh Paliwal 2 years, 1 month ago

CBSE > Class 08 > Science

5 answers

Dinsha Ganeshani 2 years, 1 month ago

Rabi crops

1Thank You

Siddesh Gadre 2 years, 1 month ago

Rabi crops

1Thank You

Poonam Verma 2 years ago

Kharif crops

0Thank You

Aarti Soni 2 years, 1 month ago

Rabi crop

1Thank You

Divyansh Paliwal 2 years, 1 month ago

Rabi crops

2Thank You

ANSWER

Write 10 lines on the usefulness of microorganisms in our lines.

Posted by Hemanth Gowda .M 2 years, 1 month ago

CBSE > Class 08 > Science

5 answers

Shubhi Singh 2 years ago

.it helps in formation of curd. .it helps in cleaning the environment. .it helps in making of madicine.

0Thank You

Janvi Singh 2 years ago

Microorganisms also used in peticides

0Thank You

Diya Sarma 2 years ago

Microorganisms helps in making medicines such as vaccines , antibiotics .

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Aryan Singh Rajput 2 years, 1 month ago

It is used to make medicine Lactobacellius bacteria is used to make curd from milk It is used to make yeast

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Dinsha Ganeshani 2 years, 1 month ago

It is help in baking

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ANSWER

We are provided with 3 watch glasses containing milk, vegetable oil and kerosene respectively. Suppose you bring a burning candle near these materials one by one, which material (s) will catch fire instantly and why

Posted by Maanit Mittal 2 years, 1 month ago

CBSE > Class 08 > Science

2 answers

Lavika Arora 1 year, 11 months ago

Kerosene

0Thank You

Mahalaxmi Medi 2 years ago

Milk contains fats so didn't force instant and vegetable oil and kerosene has constantly fire because these both have oxygen

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ANSWER

Meaning of combustible and non combustible

Posted by Hari Patel 2 years, 1 month ago

CBSE > Class 08 > Science

4 answers

Sonam Kumari 1 year, 11 months ago

Combustible :A substance that burns in air and produces heat and light upon burning is called Combustible substances. E.g. Diesel, petrol, kerosene. Non combustible :Substances that don't burn in the presence of air are called non-combustible substances. E.g. Glass, stones.

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Lavika Arora 1 year, 11 months ago

Combustible -substance that burn easily in air abd produce heat and light is called combustible substance. Non - combustible - the substance that do not burn easily in air is called non- combustible substance

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Tanishka Rajendra Shinde Shinde 2 years, 1 month ago

Combustible - the substances that undergoes combustion are called as combustible substance Non-combustible - the substance that does not burn when exposed to fire is called as non - combustible substance

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Dharshan M.R 2 years, 1 month ago

Combustible Substances A substance that burns in air and produces heat and light upon burning is called a Combustible substance. e.g. Diesel, petrol, kerosene. Non-Combustible Substances Substances that don’t burn in the presence of air are called non-combustible substances. e.g. Glass, stones.

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ANSWER

What are the number of electrons in K L M shells of 11 to 20 elements

Posted by Gunishetty Kruthika 2 years, 1 month ago

CBSE > Class 08 > Science

0 answers

ANSWER

Uses of coal

Posted by Adiba Hussain 2 years, 1 month ago

CBSE > Class 08 > Science

4 answers

Yoshiko Sasaki 2 years, 1 month ago

1) coal is one of the fuel used to cook food 2) it is used in railway engine to produce steam to run the engine 3) it is also used in thermal power plant to produce electricity 4) Coal is also used as a fuel in various industries

1Thank You

Tanishka Rajendra Shinde Shinde 2 years, 1 month ago

1Thank You

Suvidya S 2 years, 1 month ago

Which class you are studying in?

5Thank You

Suvidya S 2 years, 1 month ago

In coke , coal tar, coal gas

2Thank You

ANSWER

What is meaning of coal tar

Posted by Priya Ninama Priya Ninama 2 years, 1 month ago