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Yogita Ingle 7 years, 2 months ago
The number of vibrations or oscillations made in one second is called the frequency of vibration. The unit of frequency of vibration or oscillation of a vibrating object is hertz. When an object makes one vibration per second its frequency is said to be 1 hertz. If an object makes 10 vibrations per second , then its frequency will be 10 hertz.
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Aashu Kumar 7 years, 2 months ago
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Aashu Kumar 7 years, 2 months ago
Yogita Ingle 7 years, 2 months ago
Disaster management is the overall preparedness to handle the possibility of a disaster and efficient management of affected regions as well as people if such an incident were to occur. It involves plans and steps taken before, during and after a disaster to reduce the extent of suffering and damage.
A disaster – (natural or man-made) can strike anytime without warning. The disaster management is important because the geographical location and landscape of India exposes it to earthquakes and many kinds of weather- related disasters. In a developing country like India, usually the poor suffer the most. Therefore, it is extremely important for the government, the people and social organizations to be prepared with proper plans and arrangements to face any kind of disaster. Proper and prior planning can help in limiting and minimizing damages and losses resulting from any disaster – natural or man-made.
Posted by Hiya Aggarwal 7 years, 2 months ago
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Rock Star 7 years, 2 months ago
Yogita Ingle 7 years, 2 months ago
Endoplasmic Reticulum (ER) is a complex network of tubular membranes present within the cytoplasm of the eukaryotic cell, transpiring either with a smooth surface and therefore called as the smooth endoplasmic reticulum or studded with ribosomes and hence called the rough endoplasmic reticulum which is involved in the transportation of materials. These membranes are continuous, joining with the outer membrane of the nuclear membrane . They occur in almost every type of eukaryotic cell except red blood cells and sperm cells. It has a number of jobs within the cell. Its functions are varied. Be its protein synthesis, folding, transport of cellular materials or transport of various proteins, specifically carrying them to the Golgi apparatus. It makes its presence known in all the mentioned areas.
Posted by Krishna Chauhan 7 years, 2 months ago
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Rahul Patel 7 years, 2 months ago
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Posted by Ram Lal 7 years, 2 months ago
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Aashu Kumar 7 years, 2 months ago
Yogita Ingle 7 years, 2 months ago
On the basis of raw materials, industry can be categorized as follows:
- Agro-based Industries: When plants and animal based products are used as raw materials, it is called agro-based industry, e.g. cotton textiles, leather, edible oil, etc.
- Mineral-based Industries: When minerals are the raw materials, it is called mineral-based industry, e.g. iron and steel, petrochemical, etc. The products of mineral-based industry feed other industries.
- Marine-based Industries: When products from seas and oceans are used as raw materials, it is called marine-based industry, e.g. sea food industry.
- Forest-based Industries: When forest produce are the raw materials, it is called forest-based industry, e.g. paper, furniture, pharmaceutical, safety matches, etc.
On the basis of size, i.e. the amount of capital invested, industries can be classified as follows:
- Cottage Industry: When products are manufactured by hand and by artisans, it is called cottage industry. Basket weaving, pottery, etc. are examples of cottage industry. A small amount of capital is invested in small scale industries.
- Large Scale Industry: When a high amount of capital is invested, it is called large scale industry. Large scale industry also produces in large volumes, e.g. automobile industry.
On the basis of ownership, industries can be classified as follows:
- Private Sector: These are owned and operated by individuals or a group of individuals, e.g. TATA and Reliance.
- Public Sector: These are owned by the government or government agencies, e.g. SAIL, HAL, etc.
- Joint Sector: These are jointly owned by the government and private owners, e.g. Delhi Metro, Maruti, etc.
- Cooperative Sector: When workers or producers join together to form a company in which profit and workload are equally shared, it is called a cooperative, e.g. Amul, Lijjat, Mother Dairy, etc.
Posted by Shraddha Vanarase 7 years, 2 months ago
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Posted by Suman Singh 7 years, 2 months ago
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Yogita Ingle 7 years, 2 months ago
Industry: An economic activity which is concerned with production of goods, extraction of minerals or provision of services is called an industry.
On the basis of raw materials, industry can be categorized as follows:
- Agro-based Industries: When plants and animal based products are used as raw materials, it is called agro-based industry, e.g. cotton textiles, leather, edible oil, etc.
- Mineral-based Industries: When minerals are the raw materials, it is called mineral-based industry, e.g. iron and steel, petrochemical, etc. The products of mineral-based industry feed other industries.
- Marine-based Industries: When products from seas and oceans are used as raw materials, it is called marine-based industry, e.g. sea food industry.
- Forest-based Industries: When forest produce are the raw materials, it is called forest-based industry, e.g. paper, furniture, pharmaceutical, safety matches, etc.
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Sudeesh Singam 7 years, 2 months ago
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