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Better coal should have following characteristics
(1) It should have high calorific value.
(2) It should have low moisture content.
(3) It should have low ash content
(4) It should have high calorific intensity. (Calorific intensity-maximum temperature attainable on complete combustion of coal with theoretical amount of air.)
(5) Size of coal should be uniform.
(6) Coking quality should be high (coal on heating gives a coke which is porous, hard, strong. And suitable for metallurgical needs, then the coal is known as caking coal)
(7) It should have very low content of sulphur and phosphorous.
What are gametes? Gametes are cells specialized in sexual reproduction. They have half of the maximum number of chromosomes of the species and unite with another gamete giving
When a fatty acid reacts with glycerol, the result is- Select one: a. Formation of an amide b. Formation of an ester c. Formation of hydrocarbon d. Formation of a th
Consider a time when the membrane voltage of a SA node cell in the heart is at its minimum value (near -80 mv). At this time, A. all the voltage-gated calcium channels will be
Economic Biology: This is the study of useful plants and animals or their products. Economic biology is referred to as economics and human biology. Economics or Human Biology can
Qualitative Changes The qualitative changes in the structure of proteins in response to stress can lead to the following: Resistance against denaturation of prote
how do you define sex
What is the difference between a hormone and a morphogen? How do they act and what type of development do they control?
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Explain about Atrial Septal Defect (ASD) ? ASD occurs as an isolated anomaly in 5- 10 per cent of all CHDs. These communications occur in four sites i.e. in the central portion
Q. Show the types of oesophagitis conditions? The two types of oesophagitis conditions: 1. Acute Oesophagitis - It is characterized by substantial pain on swallowing. It is
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