Ask questions which are clear, concise and easy to understand.
Ask QuestionPosted by Prisha Gupta 27 minutes ago
- 1 answers
Posted by Kannika.A Kannika an hour ago
- 1 answers
Anuj Paliwal 35 minutes ago
Posted by Kannika.A Kannika an hour ago
- 1 answers
Anuj Paliwal 33 minutes ago
Posted by Binita Mahara 2 hours ago
- 0 answers
Posted by Ram Kumar 11 hours ago
- 1 answers
Posted by Deepanshu Sharma 11 hours ago
- 0 answers
Posted by Jyoti Kholi 12 hours ago
- 0 answers
Posted by Anshi Singh 12 hours ago
- 0 answers
Posted by Shalini.N N 13 hours ago
- 1 answers
Posted by Anshi Singh 13 hours ago
- 0 answers
Posted by Zunaid Ansari 13 hours ago
- 0 answers
Posted by Himanshu Chaturvedi 13 hours ago
- 0 answers
Posted by Nityam Thakur 13 hours ago
- 1 answers
Posted by Anish Roylker 14 hours ago
- 1 answers
Yogita Ingle 14 hours ago
Diseases are caused as result of following reasons:
- Lack of nutritious and sufficient food.
- &Unhealthy and dirty surroundings.
- Contact with an infected person.
- Using the personal belongings of an infected person.
- Eating untreated water and food from an unclean and unhygienic place.
- Lack of hygienic practices
Posted by Deepharam Maali Deeparam 15 hours ago
- 2 answers
Anshi Singh 13 hours ago
Posted by Rishabh Shakya 17 hours ago
- 3 answers
Posted by Vivek Rathore 18 hours ago
- 5 answers
Harish.C Harish.C 15 hours ago
Yogita Ingle 18 hours ago
Stomata are the minute openings, generally found in the epidermis of leaves. They are typically found in plant leaves and can also be found in stems and other parts of plants. Stomata play an important role by permitting the movement of gases such as oxygen, carbon dioxide, and water vapour to diffuse between the interior and outer surface of the plant tissues.
Posted by Mahi Dewangan 1 day ago
- 3 answers
Pari Bathla 16 hours ago
Super Khiladi 23 hours ago
Posted by Sachi Hire 1 day, 3 hours ago
- 3 answers
Anamika Sharma 1 day, 3 hours ago
Posted by Sanjay Chauhan 1 day, 3 hours ago
- 1 answers
Posted by Archena Srinivas 1 day, 12 hours ago
- 1 answers
Meghna Thapar 1 day, 11 hours ago
Few diseases caused by bacteria are:
(i) Tuberculosis (T.B.) – T.B. is an infectious disease which is communicated from one person to another directly or indirectly. It is caused by bacterium called Mycobacterium tuberculosis. T.B. can affect all parts of the body such as lungs, lymph glands, bones, intestine etc.
(ii) Cholera – Cholera is an acutely infectious, fatal disease and is more common during overcrowded fairs, festivals and after floods. Cholera is caused by the bacterium Vibrio Cholerae. It is transmitted by flies, contaminated water and food.
(iii) Typhoid – Typhoid is most common communicable disease in India. Typhoid fever is common in humans of the age 1to 15 years age group. Typhoid is caused by a rod-shaped and motile bacterium, called Salmonella typhi which is commonly found in the intestine of human beings. Human infection is direct.
(iv) Diarrhoea – Diarrhoea is an abnormally frequent discharge of semisolid or fluid faeces. The diarrhoea spreads through infection by contaminated food, water, drinks, hands, clothes, etc. The causative agents of diarrhoea are mainly bacteria such as Escherichia coli, Clostridium botulinum, Shigella dysentiriae, Campylobacter jejuri and Salmonella.
Posted by Rajat Soni 1 day, 13 hours ago
- 1 answers
Meghna Thapar 1 day, 11 hours ago
- Tyndall effect can be defined as the scattering of a beam of light by colloidal particles present in a colloidal solution. Tyndall effect can also be observed when a fine beam of light enters a room through a small hole.
- Crystallisation: The process of formation of crystals from a hot saturated solution by cooling. This method involves dissolving the mixture completely in water and heating this mixture. Further, cooling of this mixture results in the formation of crystals of a less soluble solid on the surface of the solution.
-
An element can be defined as a basic form of matter which cannot be broken down into simpler substances by any physical or chemical means. A compound is a pure substance composed of two or more elements combined chemically in a fixed proportion by mass.
Posted by Arti Singh 1 day, 14 hours ago
- 0 answers
Posted by Vaishnav Aggarwal 1 day, 14 hours ago
- 3 answers
Posted by Jammu Kids By Aaditya Bakshi 1 day, 14 hours ago
- 1 answers
Meghna Thapar 21 hours ago
There are 16 essential elements, out of which carbon and oxygen are obtained from air, hydrogen from water and remaining 13 elements are supplied by soil. These essential elements are divided into two categories: macronutrients and micronutrients. Amongst the thirteen nutrients, six are required in large quantities and are therefore called macro-nutrients. The other seven nutrients are used by plants in small quantities and are therefore called micro-nutrients.
Posted by Zimmy Stephan Bagh 1 day, 15 hours ago
- 1 answers
Meghna Thapar 1 day, 11 hours ago
- Bohr's Model of an Atom:
Niels Bohr, revised Rutherford’s atomic model and put forth the following suggestions:
Neils Bohr proposed that the electrons possess a specific amount of energy which allows them to revolve around the nucleus. The electrons are confined to these energy levels. While revolving in these discrete orbits, the electrons do not radiate energy. Hence, these orbits are also known as stationary orbits or stationary shells. Smaller the size of the orbit, smaller is its energy.
As we move away from nucleus, the energy of the orbit increases progressively. The transfer of an electron from one orbit to another is always accompanied with absorption or emission of energy. When an electron jumps from a lower energy level to a higher energy level, it absorbs energy. When an electron returns from a higher energy level to a lower energy level, it emits energy.
Posted by Ajanta Chakrabarti 1 day, 16 hours ago
- 1 answers
Rehan Khan 1 day, 15 hours ago
Buy Complete Study Pack
Subscribe complete study pack and get unlimited access to selected subjects. Effective cost is only ₹ 12.5/- per subject per month. Based on the latest CBSE & NCERT syllabus.
CBSE Test Generator
Create papers in minutes
Print with your name & Logo
Download as PDF
3 Lakhs+ Questions
Solutions Included
Based on CBSE Blueprint
Best fit for Schools & Tutors
Work from Home
- Work from home with us
- Create questions or review them from home
No software required, no contract to sign. Simply apply as teacher, take eligibility test and start working with us. Required desktop or laptop with internet connection
Aviral Bohra 8 minutes ago
1Thank You