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Name the following:
Main ore of aluminium.
Concept: Basic Principles of Metallurgy > Extraction of Metals
What is an alloy?
Concept: Corrosion of Metals
Give two examples of alloys with their chemical composition.
Concept: Corrosion of Metals
In the extraction of aluminium: Name the process of concentration of bauxite.
Concept: Basic Principles of Metallurgy > Extraction of Metals
Answer the following question.
What are alloys?
Concept: Corrosion of Metals
In the extraction of aluminium Write the cathode reaction in electrolytic reduction of alumina.
Concept: Basic Principles of Metallurgy > Extraction of Metals
In the extraction of aluminium: Write the function and formula of cryolite in the extraction of aluminium.
Concept: Basic Principles of Metallurgy > Extraction of Metals
What is ‘3R’ mantra?
Concept: Sustainable Use of Resources
Write ‘3R’ mantra significance
Concept: Sustainable Use of Resources
What is recycling of waste?
Concept: Sustainable Use of Resources
Differentiate between Toilet soap and Laundry soap.
Concept: Soap
Choose the correct alternative and rewrite the following:
Acetic acid ..................
Concept: Ethanoic Acid
Mammals : _________ : : Amphibia : Fishes
Concept: Evidence of Evolution > Morphological Evidences
State the connecting links between Peripatus with Annelida and Arthopoda.
Concept: Evidence of Evolution > Morphological Evidences
Give two examples of vestigial organs in human beings and plants.
Concept: Evidence of Evolution > Morphological Evidences
Human tailbone is a vestigial organ. Explain.
Concept: Evidence of Evolution > Morphological Evidences
What do we call the degenerated or partially developed useless organs in living organisms? Enlist such organs in human body? How the same organs are useful in other animals?
Concept: Evidence of Evolution > Morphological Evidences
Vestigial organ ______ present in human body is proof of evolution.
Concept: Evidence of Evolution > Morphological Evidences
Write short notes based upon the information known to you.
Darwin’s theory of natural selection
Concept: Darwin’s Theory of Natural Selection (Darwinism)
