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प्रश्न
Name the metal which has been placed at the bottom of the reactivity series.
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उत्तर
Gold is the metal that has been placed at the bottom of the reactivity series.
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संबंधित प्रश्न
Write equations for the reactions of iron with steam.
Which gas is produced when dilute hydrochloric acid is added to a reactive metal?
Give reasons why copper is used to make hot water tanks and not steel (an alloy of iron).
Name the metal which has been placed just below copper in the reactivity series.
Fill in the following blank with suitable word:
The white powder formed when magnesium ribbon burns in oxygen is of ....................
Name two metals which can, however, liberate hydrogen gas from very dilute nitric acid.
How do metals react with hydrogen? Explain with an example.
Why does aluminium not react with water under ordinary conditions?
What is the action of water on aluminium ? Write equation of the chemical reaction involved.
What happens when calcium reacts with water? Write the chemical equation of the reaction of calcium with eater.
Write the chemical equation of the reaction which takes place when iron reacts with dilute sulphuric acid. What happens when the gas produced is ignited with a burning matchstick?
What happens when a metal reacts with dilute hydrochloric acid? Explain with the help of an example.
Write the equation for the reaction of Magnesium with dilute hydrochloric acid.
Name the products formed. Also indicate the physical states of all the substances involved.
Write the equation for the reaction of Zinc with dilute hydrochloric acid.
Name the products formed. Also indicate the physical states of all the substances involved.
An acidic oxide is produced by the element:
(a) Na
(b) C
(c) Ca
(d) H
Name a metal which does not react with cold as well as hot water but reacts with steam.
Explain the following:
Reactivity of aluminium decrease if it is dipped in nitric acid.
An element X is soft and can be cut with a knife. This is very reactive to air and cannot be kept open in the air. It reacts vigorously with water. Identify the element from the following.
Generally metals react with acids to give salt and hydrogen gas. Which of the following acids does not give hydrogen gas on reacting with metals (except Mn and Mg)?
Metals are generally hard. Which of the following metals is an exception and can be cut with a knife?
