Ask questions which are clear, concise and easy to understand.
Ask QuestionPosted by Avishi Rajak 3 years, 10 months ago
- 4 answers
Posted by Avishi Rajak 3 years, 10 months ago
- 1 answers
Gaurav Seth 3 years, 10 months ago
Earthworm are called friends of farmer because 1.Earthworm moves through the soil that loosens and aerates the soil. This also helps the water to reach the roots quickly. 2.Earthworm 's excreta increases the fertility of the soil. 3.After their death, they get decomposed and add humus to the soil.
Posted by Avishi Rajak 3 years, 10 months ago
- 1 answers
Gaurav Seth 3 years, 10 months ago
Where do bees store the honey?
Answer:
They store the nectar in their stomachs called honey sacs and carry it to the beehive. They drop the honey into the honeycombs.
मधुमक्खियां शहद को कहां स्टोर करती हैं?
उत्तर:
वे अपने पेट में अमृत को शहद की थैलियों के रूप में संग्रहीत करते हैं और इसे मधुमक्खी के पास ले जाते हैं। वे शहद को छत्ते में गिरा देते हैं।
Posted by Avishi Rajak 3 years, 10 months ago
- 2 answers
Avishi Rajak 3 years, 10 months ago
Gaurav Seth 3 years, 10 months ago
M a t c h t h e f o l l o w i n g
1. length of a rod Ans: meter
2. octopus Ans: Sea
3. sepals Ans. : Tendril
4. Sugar: Ans: Soluble
5. diamond Ans. : Hard
Posted by Himanshu Kumari 3 years, 10 months ago
- 0 answers
Posted by Sweetsuhani Chourasiya 3 years, 10 months ago
- 0 answers
Posted by Rajdeep Behera 3 years, 10 months ago
- 1 answers
Gaurav Seth 3 years, 10 months ago
- Biotic components are all of the living things in an ecosystem, such as plants and animals. These living things interact with one another in many ways.
- Abiotic components are the non-living parts of the environment that can often have a major influence on living organisms. Abiotic components include non-living things such as water, sunlight, oxygen, soil, rocks and temperature.
Posted by Rajdeep Behera 3 years, 10 months ago
- 2 answers
Shivam Singh 3 years, 10 months ago
Gaurav Seth 3 years, 10 months ago
The word Filament itself refers to the wire or thread inside the bulb which lights up when you turn it on.
Extra explanation:
When electric current goes through the filament, the filament glows. It may also be known as the electron emitting element in a vacuum tube. To make the bulb produce more light,the filament is usually made of coils of thin wire, also known as the coiled coil in order to get more emmision.
Generally, Filaments in incandescent light bulbs are made of tungsten as its melting point is very high.
Posted by Ziya Sharma 3 years, 10 months ago
- 4 answers
Gaurav Seth 3 years, 10 months ago
2. burning of paper is irreversible process.
Irreversible changes are permanent changes. Reactants react to form an entirely new compound and cannot be reversed. Heating, burning, mixing, powdering are few processes which cause irreversible changes.
Gaurav Seth 3 years, 10 months ago
1. In a reversible change we get back the original substance by changing the conditions.
Explanation:
Any changes which can be reversed or are a temporary conversion are known as reversible changes. The reactions which are reversible are called reversible reactions
Posted by Rajdeep Behera 3 years, 10 months ago
- 1 answers
Shivam Singh 3 years, 10 months ago
Posted by Rahul Karangiya 3 years, 10 months ago
- 2 answers
Rajdeep Behera 3 years, 10 months ago
Gaurav Seth 3 years, 10 months ago
Vibratory motion is exhibited by a tuning fork
A type of motion in which a particle moves to and fro about a fixed point is known as vibratory motion.
For e.g., pendulums, swings, tuning fork etc
Posted by Avishi Rajak 3 years, 10 months ago
- 1 answers
Yogita Ingle 3 years, 10 months ago
Adaptive features of a lion that helps it in hunting are as follows:
1. A lion has slight brown body, which helps it to hide itself in dry grassland for avoiding detection by its prey.
2. Detects its prey from a distance and knows the exact location of it because of its own eyes located in front.
3. Strong paws, sharp teeth and long claws help it to catch and kill the prey.
Posted by Avishi Rajak 3 years, 10 months ago
- 4 answers
Shashank Sm 3 years, 9 months ago
Rajdeep Behera 3 years, 10 months ago
Yogita Ingle 3 years, 10 months ago
The bodies of most birds are well-suited for flying. They have light and hollow bones, and the bones of the hind limbs are used for walking and perching. The wings that we see are the bony parts of the forelimbs. ... This bone controls the muscles of flight in the body.
Monica Veerandiraprasath 3 years, 10 months ago
Posted by Ziya Sharma 3 years, 10 months ago
- 2 answers
Kartiki Gaikwad 3 years, 10 months ago
Yogita Ingle 3 years, 10 months ago
Any changes which can be reversed or are a temporary conversion are known as reversible changes. The reactions which are reversible are called reversible reactions. In this reaction, one substance is modified into another form but a new compound is not formed. Processes such as melting, boiling, evaporation, freezing, condensation, dissolution are reversible changes. Few examples are melting of wax, freezing of ice, boiling water which evaporates as steam and condenses back to water.
Posted by Ziya Sharma 3 years, 10 months ago
- 4 answers
Samiksha Yadav 3 years, 10 months ago
Monica Veerandiraprasath 3 years, 10 months ago
Aarsuhi Saini 3 years, 10 months ago
Posted by Ziya Sharma 3 years, 10 months ago
- 4 answers
Posted by Ziya Sharma 3 years, 10 months ago
- 1 answers
Posted by Ziya Sharma 3 years, 10 months ago
- 1 answers
Gaurav Seth 3 years, 10 months ago
Classification is a method of grouping, in which we place similar things together in one group. Example: Arrangement of books in a library is an example of classification. In a library, books on the same subject are kept in one place, so that it will not be difficult to locate them.
Posted by Shradha Kumari 3 years, 10 months ago
- 4 answers
Yogita Ingle 3 years, 10 months ago
A pinhole camera is a simple camera, without lens, in the shape of a box. One of the sides has a small hole and it produces an inverted image of the outside world at other side.
- The box should be painted black from outside and inside for better clarity.
- The object whose image is to be seen should be in bright light.
- Smaller the hole, sharper the image.
- Temporary Black and White images are formed on the screen if a tracing paper is used. Permanent colored and b & w images can be obtained using photographic films instead of tracing paper.
- In the below diagram, two boxes are placed one inside the other. The image of the outer object is created inverted on the inner box translucent screen.
Gaurav Seth 3 years, 10 months ago
A pinhole camera is a simple camera, without lens, in the shape of a box. One of the sides has a small hole and it produces an inverted image of the outside world at other side.
- The box should be painted black from outside and inside for better clarity.
- The object whose image is to be seen should be in bright light.
- Smaller the hole, sharper the image.
- Temporary Black and White images are formed on the screen if a tracing paper is used. Permanent colored and b & w images can be obtained using photographic films instead of tracing paper.
- In the below diagram, two boxes are placed one inside the other. The image of the outer object is created inverted on the inner box translucent screen.
Posted by Ambika Shinde 3 years, 10 months ago
- 5 answers
Posted by Grick Sudrania 3 years, 10 months ago
- 2 answers
Yogita Ingle 3 years, 10 months ago
Making own Magnet
- Take an Iron bar and a Magnet bar.
- Place one of the magnet’s pole at the edge of the iron bar.
- Slide the magnet towards the other edge of the iron bar without lifting the magnet.
- Lift the magnet now and place at the initial position again with same pole touching iron bar.
- Repeat this process 30-40 times or more till the iron bar becomes magnetized.
Gaurav Seth 3 years, 10 months ago
- Take an Iron bar and a Magnet bar.
- Place one of the magnet’s pole at the edge of the iron bar.
- Slide the magnet towards the other edge of the iron bar without lifting the magnet.
- Lift the magnet now and place at the initial position again with same pole touching iron bar.
- Repeat this process 30-40 times or more till the iron bar becomes magnetized.
Posted by Pratyansha Bhadauria 3 years, 10 months ago
- 1 answers
Posted by Pratyansha Bhadauria 3 years, 10 months ago
- 1 answers
Rajdeep Behera 3 years, 10 months ago
Posted by Pratyansha Bhadauria 3 years, 10 months ago
- 2 answers
Shashank Sm 3 years, 9 months ago
Shivam Singh 3 years, 10 months ago
Posted by ? Umayall ❤ 3 years, 10 months ago
- 2 answers
Yogita Ingle 3 years, 10 months ago
| Physical Change | Chemical Change |
| When a substance undergoes a physical change, its composition remains the same despite its molecules being rearranged. | When a substance undergoes a chemical change, its molecular composition is changed entirely. Thus, chemical changes involve the formation of new substances. |
| Physical change is a temporary change. | A chemical change is a permanent change. |
| A Physical change affects only physical properties i.e. shape, size, etc. | Chemical change both physical and chemical properties of the substance including its composition |
| A physical change involves very little to no absorption of energy. | During a chemical reaction, absorption and evolution of energy take place. |
| Some examples of physical change are freezing of water, melting of wax, boiling of water, etc. | A few examples of chemical change are digestion of food, burning of coal, rusting, etc. |
| Generally, physical changes do not involve the production of energy. | Chemical changes usually involve the production of energy (which can be in the form of heat, light, sound, etc.) |
Posted by Simran Singh 3 years, 10 months ago
- 2 answers
Nitin Raj 3 years, 10 months ago
Gaurav Seth 3 years, 10 months ago
A cell is defined as the smallest, basic unit of life that is responsible for all of life's processes.” Cells are the structural, functional, and biological units of all living beings. ... They are known as the building blocks of life.
Posted by Diksha Dubey 3 years, 10 months ago
- 2 answers
Chahat Pandit 3 years, 10 months ago
Posted by Meghna Roy 3 years, 10 months ago
- 2 answers
Gaurav Seth 3 years, 10 months ago
A compass is usually a small box with a glass cover on it. A magnetised needle is pivoted inside the box, which can rotate freely.
The compass also has a dial with directions marked on it.
The compass is kept at the place where we wish to know the directions. Its needle indicates the north-south direction when it comes to rest.
The compass is then rotated until the north and south marked on the dial are at the two ends of the needle.
To identify the north-pole of the magnetic needle, it is usually painted in a different colour.
Red colour arrow usually points to North Pole. If we know the North direction we can find all other 3 directions of that place.
Posted by Meghna Roy 3 years, 10 months ago
- 1 answers
Gaurav Seth 3 years, 10 months ago
A compass is usually a small box with a glass cover on it. A magnetised needle is pivoted inside the box, which can rotate freely.
The compass also has a dial with directions marked on it.
The compass is kept at the place where we wish to know the directions. Its needle indicates the north-south direction when it comes to rest.
The compass is then rotated until the north and south marked on the dial are at the two ends of the needle.
To identify the north-pole of the magnetic needle, it is usually painted in a different colour.
Red colour arrow usually points to North Pole. If we know the North direction we can find all other 3 directions of that place.
Posted by Prince Prajapati 3 years, 10 months ago
- 1 answers
Yogita Ingle 3 years, 10 months ago
Lead acid batteries are the most commonly used type of battery in photovoltaic systems
myCBSEguide
Trusted by 1 Crore+ Students
Test Generator
Create papers online. It's FREE.
CUET Mock Tests
75,000+ questions to practice only on myCBSEguide app
Shashank Sm 3 years, 9 months ago
0Thank You