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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 (Au)
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संबंधित प्रश्न
Iron is
(a) More reactive than zinc
(b) More reactive than aluminium
(c) Less reactive than copper
(d) Less reactive than aluminium
Differentiate between metal and non-metal on the basis of their chemical properties.
What name is given to those metal oxides which show basic as well as acidic behaviour?
The white powder formed when magnesium ribbon burns in oxygen is of ______.
What type of oxides are formed when non-metals react with oxygen? Explain with an example.
Explain why, metals usually do not liberate hydrogen gas with dilute nitric acid.
Arrange the following metals in order of their chemical reactivity, placing the most reactive metal first:
Magnesium, Copper, Iron, Sodium, Zinc, Lead, Calcium.
You are given samples of three metals − sodium, magnesium and copper. Suggest any two activities to arrange them in order of their decreasing reactivities.
Write one reaction in which aluminium oxide behaves as a basic oxide and another in which it behaves as an acidic oxide.
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?
Name one metal which displaces copper from copper sulphate solution and one which does not.
One of the following is not a neutral oxide. This is:
(a) CO
(b) H2O
(c) N2O
(d) Na2O
Out of the following oxides, the amphoteric oxide is:
(a) Fe2O3
(b) Al2O3
(c) P2O5
(d) N2O
An element X forms two oxides XO and XO2. The oxide XO is neutral but XO2 is acidic in nature. The element X is most likely to be:
(a) sulphur
(b) carbon
(c) calcium
(d) hydrogen
Write the chemical equation for the following reaction:
Manganese dioxide is heated with aluminum powder.
Which property of metals is used for making bells and strings of musical instruments like Sitar and Violin?
Which one among the following is an acidic oxide?
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.
Metals are generally solid. Which of the following metals is in the liquid state at room temperature?
Find the odd one out:
