Advertisements
Advertisements
प्रश्न
Bauxite reacts with sodium hydroxide in the Bayer’s process.
पर्याय
Right
Wrong
Advertisements
उत्तर
Bauxite reacts with sodium hydroxide in the Bayer’s process- Right
APPEARS IN
संबंधित प्रश्न
Name the gas in air which tarnishes silver articles slowly.
Name one metal which is extracted by reduction with carbon.
Fill in the following blank with suitable word:
The rocky material found with ores is called.............
Describe with one example, how moderately reactive metals (which are in the middle of reactivity series) are extracted.
Name the metal which is extracted from the ore called 'rock salt'.
Which of the following reactants are used to carry out the thermite reaction required for welding the broken railway tracks?
(a) Al2O3 + Fe
(b) MnO2 + Al
(c) Fe2O3 + Al
(d) Cu2O + Fe
Which of the following metals can be obtained from haematite ore?
(a) copper
(b) sodium
(c) zinc
(d) iron
The articles made of silver metal become dark on prolonged exposure to air. This is due to the formation of a layer of its:
(a) oxide
(b) hydride
(c) sulphide
(d) carbonate
Give the chemical formula of :
Bauxite
Which one of the following is not true of metal :
Metals are malleable and ductile
Which one of the following is not true of metal :
Metals form non-polar covalent compounds
State three objectives achieved during the roasting of ores.
Name the following :
The Process of heating an ore to a high temperature in the presence of air.
Find the odd one out and give its explanation.
Write the name.
Metals which are amphoteric in nature.
Explain the concept of Calcination.
Explain the following reaction with the balanced equation.
Sodium aluminate reacts with water
Explain the following reaction with the balanced equation.
Ferric oxide is reacted with aluminium.
Explain Bayer’s process of concentration of bauxite with a chemical equation.
Which of the statements about the reaction, \[\ce{ZnO + CO -> Zn + CO2}\] is correct?
