Ask questions which are clear, concise and easy to understand.
Ask QuestionPosted by Adwaith Santhosh 7 years, 4 months ago
- 5 answers
Akhil Tomar 7 years, 4 months ago
Putani Spoorthy 7 years, 4 months ago
Posted by Mohammed Aakif 7 years, 4 months ago
- 4 answers
Ritik Dhakad 7 years, 4 months ago
Shivani Garg 7 years, 4 months ago
Gaurav Kumar 7 years, 4 months ago
Posted by Harikanth Harikanth 7 years, 4 months ago
- 4 answers
Ritik Dhakad 7 years, 4 months ago
Putani Spoorthy 7 years, 4 months ago
Shivani Garg 7 years, 4 months ago
Posted by Mohit Jha 7 years, 4 months ago
- 1 answers
Nasim Ansari 7 years, 4 months ago
Posted by 24 Šhůvå 08 7 years, 4 months ago
- 0 answers
Posted by Shivam Kumar 7 years, 4 months ago
- 1 answers
Vrinda Chhabra 7 years, 4 months ago
Posted by Malay Paltasingh 7 years, 4 months ago
- 2 answers
Posted by Hitansh Garg 7 years, 4 months ago
- 2 answers
Putani Spoorthy 7 years, 4 months ago
Kashika Kashika 7 years, 4 months ago
Posted by Hitansh Garg 7 years, 4 months ago
- 1 answers
Meghna Thapar 5 years, 7 months ago
In physics, magnitude means greatness of size or extent. A vector has a magnitude and a direction, its magnitude being the numerical value of its length, size or quantity. A scalar in physics is defined by magnitude or quantity and not by direction. An example of magnitude is the depth of the Grand Canyon. An example of magnitude is the size of the problem of world hunger.
Posted by Krutika Raipurkar 7 years, 4 months ago
- 1 answers
Yogita Ingle 7 years, 4 months ago
Algae: Algae are green plants which are simple in structure. A cell of algae contains cell wall and chloroplast. Algae are autotrophs. Some algae are microscopic. Examples: Chlamydomonas, Spirogyra, etc.
Fungi: Fungi have cell wall and nucleus in their cells but do not have chloroplast. Fungi are saprotrophs, i.e. they feed on dead remains of plants and animals. Almost all fungi are microscopic, except mushrooms. Examples: yeast, Rhizopus (bread mould), Aspergillus, Penicillium, etc.
Posted by Priyanshu Raj 7 years, 4 months ago
- 3 answers
Ritik Dhakad 7 years, 4 months ago
Posted by Priyanshu Raj 7 years, 4 months ago
- 1 answers
Yogita Ingle 7 years, 4 months ago
There are three parts of ear – the outer ear, middle ear and the inner ear. The outer ear consists of pinna and ear canal. The compressions in the air reach the outer ear called pinna which directs the sound to travel through the ear canal to reach the ear drum or tympanic membrane. Due to these compressions, the membrane starts vibrating. This thin membrane vibrates and relaxes depending on the amplitude of compression in air. The vibration is then passed to three bones in the ear connected to the ear drum: hammer, anvil and stirrup and is amplified about 20 times than the actual vibration.
Posted by Siya Gusain 7 years, 4 months ago
- 2 answers
Gaurav Kumar 7 years, 4 months ago
Soumya Pandey 7 years, 4 months ago
Posted by Ashu Verma 7 years, 4 months ago
- 1 answers
Posted by Saahit Kamu 7 years, 4 months ago
- 1 answers
Yogita Ingle 7 years, 4 months ago
The crude petroleum oil extracted from oil wells is taken to the oil refinery through pipes.In the oil refinery,crude petroleum is oil is refined into different useful fractions.
The separation of petroleum into different fractions is done by fractional distillation.The various useful fractions obtained by the refining of petroleum are: Petroleum gas, petrol, kerosene, diesel, lubricating oil,paraffin wax, Bitumen.
Posted by Niharika Singh Singh 7 years, 4 months ago
- 1 answers
Posted by Rounak Ramteke 7 years, 4 months ago
- 2 answers
Roshan Raj 7 years, 4 months ago
Yogita Ingle 7 years, 4 months ago
Without a microscope, a cell can't be seen as cells are microscopic and can't be seen by naked eyes. You need a microscope to see microscopic materials. The cell was first discovered and named by Robert Hooke in 1665. He remarked that it looked strangely similar to cellula or small rooms which monks inhabited, thus deriving the name.
Posted by Rounak Ramteke 7 years, 4 months ago
- 1 answers
Yogita Ingle 7 years, 4 months ago
Function of cell wall: i) Gives shape and rigidity to cell.
(ii) It protects the protoplasm from
(iii) Helps to cell conduction of water and different chemical substances.
Function of cell membrane: (i) It give shape of the cell.
(ii) Protects the protoplasm and cell organelles.
(iii) Controls the transfer of food meterials and waste products inside and outside the cell.
Function of cytoplasm:: (i) Various cytoplasmic organelles, the nucleus and non-living cytoplasmic inclusions remain embedded in the cytoplasm.
(ii) The cytoplasm is the site of a number of chemical reactions which are essentials for life.
(iv) Frunction of Chromosomes: (i) Chromosomes are essential for the process of cell division, are responsible for replication, division, and creation of daughter cells which contain correct sequences of DNA and proteins.
(ii) Chromosomes are often called as the 'packaging material', because it tightly holds the DNA and proteins together in the eukaryotic cells.
Posted by Dinesh Mangal 7 years, 4 months ago
- 1 answers
Posted by Aashu Kumar 7 years, 4 months ago
- 1 answers
Posted by Sakshi Kumari 5 years, 9 months ago
- 1 answers
Sonali Aggarwal 7 years, 4 months ago
Flash point for a flammable liquid is the minimum temperature at which there are enough vapors of the liquid to ignite when a ignition source (external) is brought near to it.
Ignition temperature is the least temperature at which the substance catches fire and starts burning.
Eg. Petrol has a flash point as low as -43°C and an ignition temperature of 246°C
Posted by Sunil Gulhane 7 years, 4 months ago
- 4 answers
Sonali Aggarwal 7 years, 4 months ago
Balancing the need to use the resources and also conserve them for future is called sustainable development of natural resources.
Posted by Alina Shaikh 7 years, 4 months ago
- 1 answers
Yogita Ingle 7 years, 4 months ago
Infectious diseases can be spread through various mediums.
Most infectious diseases are caused by bacteria, parasites, virus or fungi.
There are many organisms that take shelter in our bodies.
These organisms are sometimes harmless but due to certain conditions they are capable of causing diseases.
Mild symptoms are always curable at homes but serious symptoms require hospitalization.
Posted by Kanika Thakur 7 years, 4 months ago
- 1 answers
Yogita Ingle 7 years, 4 months ago
- Artificial jewelry, usually made of less expensive metals is often plated with a thin layer of a precious metal like gold and silver to make it more lustrous, appealing but cheaper.
- Many industrial applications use electroplating to create a protective barrier on a metal substrate. The protective barrier in this case prevents tarnishing and gives a glossy appearance. Eg: Chromium plating is done on car spare parts, taps, wheel rims etc. Chromium is very expensive and the whole part cannot be made of chromium. So, it is coated with chromium to give it a shiny appearance.
- Tinning (electroplating of tin) is a very cost-effective electroplating solution. Tin is relatively cheaper and is used for electroplating electronic components, hardware products, fasteners, screws, nuts, bolts and food cans. If food is stored in iron cans, it would tend to get spoilt over a period of time. But, when iron is electroplated with tin, it prevents the food from getting spoilt. Tinning offers resistance against corrosion
Posted by Somya Jain 7 years, 4 months ago
- 4 answers
Posted by Sanjana Rawat 7 years, 4 months ago
- 1 answers
Posted by Naraen King 7 years, 4 months ago
- 1 answers
Meghna Thapar 5 years, 7 months ago
O Horizon - The top, organic layer of soil, made up mostly of leaf litter and humus (decomposed organic matter). A Horizon - The layer called topsoil; it is found below the O horizon and above the E horizon. Seeds germinate and plant roots grow in this dark-colored layer. If the top layer of soil is exposed, then it will gradually expose the lower layer of soil, which is hard and rocky in nature. This type of soil is less fertile as it contains less humus. Continued soil erosion will make the land barren or infertile.
Posted by Babita Agarwal 7 years, 4 months ago
- 1 answers
Vasu Bajpai 7 years, 4 months ago
Posted by Somya Jain 7 years, 4 months ago
- 1 answers
Karan Bagri 7 years, 4 months ago
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
Divya Saini 7 years, 4 months ago
1Thank You