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Fertilizer : fertiliser is a man made inorganic salt . Fertiliser is prepared in factories . Fertiliser does not provide any humus to the soil . Manure: manure is a natural substance obtained by the decomposition of cattle dung and plant residues . Manure can be prepared in the field. Manure provide a lot of humus to the soil.

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How to conserve plants and animals ?

Posted by . . 2 years, 2 months ago

CBSE > Class 08 > Science

2 answers

Anshika Sinha 2 years, 2 months ago

Make different type of biosphere reserve national parks and wildlife sanctuary and another way is don't kill them don't do deforestation and do reforestation

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Sonam Kumari 2 years, 2 months ago

There should be protected areas for them like wildlife sanctuaries, biosphere reserves and national parks in a country. Another way to protect the animals and plants is to prohibit grazing, hunting etc like activities that may cause the extinction of plants and animals.

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ANSWER

Draw the diagram of petroleum and natural gas deposits

Posted by Vidya Biradar 2 years, 2 months ago

CBSE > Class 08 > Science

1 answers

Anshika Sinha 2 years, 2 months ago

Beta how it is possible

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ANSWER

The substance which have very low ignition temperature will catch fire after some time (T/F)

Posted by Tanuj Bhati 2 years, 2 months ago

CBSE > Class 08 > Science

4 answers

Sonam Kumari 2 years, 1 month ago

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

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Anshika Sinha 2 years, 2 months ago

False

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Bhawana Tayal 2 years, 2 months ago

It will get fire after sometime if it is combustible.

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Jainab Khan 2 years, 2 months ago

False

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ANSWER

What is friction? What are its types?

Posted by Ananya S Nair 2 years, 2 months ago

CBSE > Class 08 > Science

2 answers

Sonam Kumari 2 years, 1 month ago

Friction is the force that opposes the motion of a solid object over another. There are mainly four types of friction: static friction, sliding friction, rolling friction, and fluid friction.

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. . 2 years, 2 months ago

Frictional force is the opposing force exerted by one surface over other due to relative motion in contact Types of friction 1. Static friction 2.Dynamic friction 3. Rolling friction 4. Sliding friction

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ANSWER

Which metal is most reactive metal

Posted by Arpit Kumar 2 years, 2 months ago

CBSE > Class 08 > Science

1 answers

. . 2 years, 2 months ago

Potassium

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ANSWER

Coal mines

Posted by Kumpati Indhu 2 years, 2 months ago

CBSE > Class 08 > Science

0 answers

ANSWER

Is moon cool??

Posted by Srisamriddhi Balaji 2 years, 2 months ago

CBSE > Class 08 > Science

2 answers

Sonam Kumari 2 years, 2 months ago

Yes moon is cool

1Thank You

Aman Yadav 2 years, 2 months ago

Moon is not coal

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ANSWER

Ch 11 science book Back answers

Posted by Vedika Sahu 2 years, 2 months ago

CBSE > Class 08 > Science

0 answers

ANSWER

What is a microorganisms and how they help us ?

Posted by Naveen Bisht 2 years, 2 months ago

CBSE > Class 08 > Science

5 answers

Mohit Yenurkar 2 years, 2 months ago

Microorganism are true small and are not visible to the eyes it can be seen with the well magnifying microscope. Microorganisms are useful in producing foods, treating waste water, creating biofuels and a wide range of chemicals and enzymes.

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Lavika Arora 2 years, 2 months ago

The organisms which are not seen with our naked eyes but are observed through microscope are called microorganisms . They help in cleaning the environment

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Saatvi Yadav 2 years, 2 months ago

Microorganisms are useful in producing foods, treating waste water, creating biofuels and a wide range of chemicals and enzymes.

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Tannu Dwivedi 2 years, 2 months ago

Living organisms that cannot be seen with naked eyes are called microorganisms. .microorganisms also help in cleaning the environment for example (vegetable peels,remains of animals faeces etc).

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Karuna Knpn 2 years, 2 months ago

are you the teacher of bhadrachalam public school

8Thank You

ANSWER

Kisi ka pas science ka question paper hai 2023 matlab kal ka

Posted by Abhay Kumar 2 years, 2 months ago

CBSE > Class 08 > Science

4 answers

Divya Singhal 2 years, 1 month ago

Yess

0Thank You

Anshika Sinha 2 years, 2 months ago

I have on this Wednesday I gave paper mean on 27th sept

0Thank You

Sonal Sahoo 2 years, 2 months ago

Yes I have it

4Thank You

Ankit Sharma 8Th 2 years, 2 months ago

Nahi

1Thank You

ANSWER

Offsprings of oviparous animals are at a greater risk than those of viviparous animals

Posted by Secret Secret 2 years, 2 months ago

CBSE > Class 08 > Science

0 answers

ANSWER

science ke paper mein kal kya aayega 2023 mid term class 8

Posted by Yash Singh 2 years, 2 months ago

CBSE > Class 08 > Science

4 answers

Anshika Sinha 2 years, 2 months ago

Or ye wala questions aayega jiska ans ye hai acche se yaad karna mera baccha Coal, Coke,Coal gas ,aur vo matbal jo inke sath tha

0Thank You

Anshika Sinha 2 years, 2 months ago

Dheko Case Study , 20 objective aur bhaut kuch par 80 marks ka

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Naveen Bisht 2 years, 2 months ago

Hn sahi khe rha h

1Thank You

Account Deleted 2 years, 2 months ago

Ncert questions padh le or chapter read kr le

1Thank You

ANSWER

Learn diary chapter 3

Posted by Sadam Ragamounika Ragamonika 2 years, 2 months ago

CBSE > Class 08 > Science

0 answers

ANSWER

Suppose a ball is falling from a high-rise building. After falling through a certain height, the frictional force acting on the ball due to air that acts up becomes equal to the pull of gravity on the ball that acts downwards. When these tes forces become equal, then what happens to the ball?

Posted by Bhavya Pincha 2 years, 2 months ago

CBSE > Class 08 > Science

1 answers

Bhawana Tayal 2 years, 2 months ago

When magnitude of force exerting on opposite sides is equal,then the net force exerting on it is 0.There will be no change in it.

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ANSWER

Measure to limited noise pollution

Posted by Akash Rawat 2 years, 2 months ago

CBSE > Class 08 > Science

1 answers

Vaishnavi Kohli 2 years, 2 months ago

Noise Pollution can be controlled by designing quieter machines, using acoustic enclosures, and vibration isolators, increasing the distance of the transmission, and using noise-canceling headphones, earplugs, and more.

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ANSWER

What is importance of red data book

Posted by Birendra Sahu 2 years, 2 months ago

CBSE > Class 08 > Science

5 answers

Harshit Kumar 2 years, 2 months ago

Red data book is a collection of endangered and extinct species of natural vegetation and wildlife

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Riya Tiwari 2 years, 2 months ago

The Red Data Book is a public document that records endangered and rare species of plants, animals, fungi, and local subspecies in a given area. The book is maintained by the International Union for Conservation of Nature (IUCN). The Red Data Book is important because it: Provides information for research, studies, and monitoring programs Helps identify and protect species that are on the verge of extinction Helps identify the conservation status of all animals, birds, and other species Helps protect species that are lost, harmed, or not able to continue their life cycle Helps conserve species on the verge of extinction The Red Data Book was created to protect species that are on the verge of extin

1Thank You

Veera Bhatt 2 years, 2 months ago

It is used to record the endangered and extinct spieces of natural vegetation and wildlife

1Thank You

Harmeet Kaur 2 years, 2 months ago

The Red Data Book helps us in providing complete information for research, studies and also for monitoring the programs on rare and endangered species and their habitats. This book is mainly created to identify and protect those species which are on the verge of extinction.

1Thank You

Prem Patel 2 years, 2 months ago

It is use for record a data of animal species

1Thank You

ANSWER

How we produce a sound

Posted by Anshuman Lenka 2 years, 2 months ago

CBSE > Class 08 > Science

1 answers

Harmeet Kaur 2 years, 2 months ago

The sound is produced when an object is set to vibrate or we can say that vibrating objects produce sound. The sound of the human voice is produced due to vibration in the vocal cord. We can produce sound by striking the tuning fork, by plucking, scratching, rubbing, blowing or shaking two objects.

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ANSWER

Why Smelling agent is added to LPG?

Posted by Hetal Patel 2 years, 2 months ago

CBSE > Class 08 > Science

3 answers

Harmeet Kaur 2 years, 2 months ago

This substance is added to the gas when it leaves the main storage terminals. This substance is added in order to detect its leakage of LPG at the household level in order to save from fire accidents. Hence, the strong smelling substance added to LPG is ethyl mercaptan

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Garima Chandurkar 2 years, 2 months ago

Ethyl mercaptan is a strong smelling agent added to LPG cylinders to detect leakage. As we all know, LPG is very dangerous, because if it leaks, it can cause terrible fires and devastating explosions. To avoid this, Ethyl Mercaptan is added to the gas, which possesses that strong odor of rotten cabbages

1Thank You

Priya Raj 2 years, 2 months ago

Beacuse if we add smelling agent to lpg then it doesn't leak

2Thank You

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 Nidhi Sain 2 years, 2 months ago

CBSE > Class 08 > Science

0 answers

ANSWER

Why are viruses considered as being at the border line between living and nonliving things?

Posted by Raghvi Dubey 2 years, 2 months ago

CBSE > Class 08 > Science

1 answers

Sahil Singh 2 years, 2 months ago

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1. Assertion -Eukaryotic cells have membrane-bound organelles. Reason -Prokaryotic cells lack membrane-bound organelles . 2. Assertion -Tin cans, used for storing food, are made by electroplating tin on iron. Reason -Tin is more reactive than iron. Thus,food does come in contact with iron and is protected from getting spoiled. 3. Assertion- In the summer season the frequency of watering is lower in plants. Reason- It is due to the increased rate of evaporation of water from the soil and the leaves. 4. Assertion - It is difficult to carry a bag with narrow straps as compared to carry the bag with broader straps. Reason- When the same force acts over a small area its effect is more . 5. Assertion- A ball rolling along the ground gradually slows down and finally comes to rest. Reason- This happens due to the force of friction between the ball and the ground. 6. Assertion- We apply water between the moving parts of a machine to increase the efficiency of the machine. Reason - lubricants applied on the surface of the moving part reduces the friction. 7. Assertion - We do not slip when we walk on a wet floor. Reason- The water forms a thin layer between the feet and the floor and decreases the friction. 8. Assertion- legumes revive the soil fertility. Reason - Microbes in the root nodules of leguminous plants fix the atmospheric nitrogen and increase the fertility of soil. 9 Assertion -The bubbles of gas may be formed on the electrodes during chemical reaction . Reason- The passage of an electric current through a conducting solution causes chemical reaction. 10. Assertion -The average temperature of the Earth's atmosphere is gradually increasing is called global warming . Reason- The gasses like nitrogen oxide and water vapors also contribute towards the effect called greenhouse effect. 11. Assertion- Copper does not react with dilute hydrochloric acid even on heating but it reacts with sulphuric acid. Reason - Metals generally do not react with acids.

Posted by Ritvi Khandelwal 2 years, 2 months ago

CBSE > Class 08 > Science

1 answers

Mahalaxmi Medi 2 years, 2 months ago

1. Both are true 2. Both are true 3.Both are true 4. Both are true 5 . Both are true 6 . Both are true 7. Assertion is true but reason is wrong because it increases friction

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ANSWER

Assertion reason

Posted by Ritvi Khandelwal 2 years, 2 months ago

CBSE > Class 08 > Science