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प्रश्न
Bauxite reacts with sodium hydroxide in the Bayer’s process.
पर्याय
Right
Wrong
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उत्तर
Bauxite reacts with sodium hydroxide in the Bayer’s process- Right
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संबंधित प्रश्न
In the extraction of aluminium: Draw the diagram for the extraction of aluminium.
Silver metal does not combine easily with oxygen but silver jewellery tarnishes after some time. How?
Explain giving one example, how highly reactive metals (which are high up in the reactivity series) are extracted.
How are the less reactive metals (which are quite low in the reactivity series) extracted? Explain with the help of an example.
Which gas is produced during the extraction of aluminium? At which electrode is this gas produced?
Name one ore of mercury. Which mercury compound is present in this ore? Write its chemical formula.
The major ore of aluminium is known as ______.
Rock salt is an ore of one of the following metals. This metal is:
Which metal can be extracted from the following ore?
bauxite
An element has its electron configuration as 2,8,8,2. Now answer the following questions.
a) What is the atomic number of this element?
b) What is the group of this element?
c) To which period does this element belong?
Give the chemical formula of :
Bauxite
How many valence electrons are present in non- metals?
Aluminium oxide is _______ oxide.
Extraction of moderately reactive elements is done by _______ and _______ method.
Explain the concept of Calcination.
Explain in brief types of extraction of moderately reactive metals according to their reactivity.
Explain in brief types of extraction of less reactive metals according to their reactivity.
The poorest conductor of heat among metals is ____________.
Which of the following metals exist in their native state in nature?
- Cu
- Au
- Zn
- Ag
Electrical wires have a coating of an insulting material. The material, generally used is
