Introduction
Man's quest for sources of energy is inexhaustible. Early man depended mainly on muscular energy and later began to use wind and flowing water as sources of energy. He learned the art of making and controlling fire. Fire became his source of light at night. He used fire for warmth and realized that..
Effect of Temperature
Generally, the rates of chemical reactions increase with increase in temperature. It is a common observation that perishable foods like milk, cooked vegetables decay more quickly in summers than in winter. Consider the chemical reaction: At 273 K, the reaction is extremely..
Generally, the rates of chemical reactions increase with increase in temperature. It is a common observation that perishable foods like milk, cooked vegetables decay more quickly in summers than in winter. Consider the chemical reaction: At 273 K, the reaction is extremely..Introduction
Man's quest for sources of energy is inexhaustible. Early man depended mainly on muscular energy and later began to use wind and flowing water as sources of energy. He learned the art of making and controlling fire. Fire became his source of light at night. He used fire for warmth and realize..
Uses of Water
1. For drinking and for life processes. On an average, a man consumes about 60,000 to 80,000 litres of water in his lifetime. The body of an adult contains nearly 40 to 50 litres of water at any given time and water constitutes about 66% of the average body make up. Aqueous solutions fill the cells..
Toxicity
. Inhaled anthracene can cause bronchitis like symptoms. There is limited information on human reproductive implications. Anthracene may cause genetic mutations in cells. Anthracene is not currently considered a toxic substance. Phenanthrene is also a skin and eye irritant, with increasing effects ..
Calorific Value of Foods and Fuels
Nutritional value of foods, and the usefulness of fuels is determined by the heat (energy) they produce on heating. The energy released by the combustion of foods or fuels is usually compared in terms of their combustion energy per gram. It is known as calorific value. It ..
Importance of Chemicals in Food
Actually speaking, natural food substances are various forms of chemicals. For e.g., rice is a carbohydrate. Fruits contain carbohydrates and acids like citric acid. Vegetables contain proteins (amino acid blocks) and vitamins. Besides these, chemicals are also used as preservatives..
Calorific Value of Foods and Fuels
Calorific Value of Foods and Fuels - Nutritional value of foods, and the usefulness of fuels is determined by the heat (energy) they produce on heating. The energy released by the combustion of foods or fuels is usually compared in terms of their combustion energy per ..
Calorific Value of Foods and Fuels - Nutritional value of foods, and the usefulness of fuels is determined by the heat (energy) they produce on heating. The energy released by the combustion of foods or fuels is usually compared in terms of their combustion energy per ..Energy from fuels and foods
Fuels such as coal, petroleum and natural gas, which undergo combustion (burnt in air either alone or after mixing with another substance) and release energy are needed for the working of machines. The energy released keeps the machines working. More is the energy released, better is the fuel. Hum..
Fuels such as coal, petroleum and natural gas, which undergo combustion (burnt in air either alone or after mixing with another substance) and release energy are needed for the working of machines. The energy released keeps the machines working. More is the energy released, better is the fuel. Hum..Polyhalogen Derivatives - Carbon tetrachloride
Many polyhalogenated hydrocarbons find important use as industrial solvents, pesticides, refrigerants, medicines, inert lining of cooking utensils, etc. Some useful chloro compounds a..
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