(c) List two damages caused by corrosion and suggest how corrosion can be
(ए) संक्षारण क्या है?
(बी) चाँदी तथा तांबे मे लगने वाले जंक की परत किस रंग की होती है ?
(सी) संक्षारण के दो नुकसान बताइये तथा इन्हे जंक से कैसे बचा सकते है?
Que7: What is difference between aerobic and anaerobic tespiration?
। (वायवीय और अवायवीय श्वसन के बीच अंतर क्या है?)
Que8: Differentiate xylem and phloem.
(जाइलम तथा फ़्लोयम में अंतर बताये?
Que9: Write the difference between involuntary action and reflex actior
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Corrosion.......
The phenomenon due to which metals are slowly eaten away by the reaction of air , water , and chemical present in the atmosphere.....
Effect of corrosion.....
1. Corrosion causes damage to car bodies, bridges, iron railing, ships and all objects made of metals, specially those which r made up of iron...
2. Corrosion is a wasteful process in most of cases.
Aerobic respiration.....
It is the process in which large amount of energy is released in the presence of oxygen.
Anaerobic respiration.....
It is the respiratory process in which small amount if energy is released in the absence of oxygen.
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