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प्रश्न
Name a metal which It does not react with any physical state of water?
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उत्तर
Gold does not react with any physical state of water.
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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
A student added few pieces of aluminium metal to two test tubes A and B containing aqueous solutions of iron sulphate and copper sulphate. In the second part of her experiment, she added iron metal to another test tubes C and D containing aqueous solutions of aluminium sulphate and copper sulphate.
In which test tube or test tubes will she observe colour change? On the basis of this experiment, state which one is the most reactive metal and why.
Explain the following reaction with the help of a balanced chemical equation:
Magnesium reacts with hot water.
What changes in the colour of iron nails and copper sulphate solution do you observe after keeping the iron nails dipped in copper sulphate solution for about 30 minutes?
Write equation for the reaction of sodium with oxygen.
Complete and balance the following equation:
Name two metals which can, however, liberate hydrogen gas from very dilute nitric acid.
Why does aluminium not react with water under ordinary conditions?
Name another metal oxide which behaves like aluminium oxide.
What happens when calcium reacts with water? Write the chemical equation of the reaction of calcium with eater.
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.
Name one metal more reactive and another less reactive than hydrogen.
The elements whose oxides can turn litmus solution blue are:
(a) carbon and sulphur
(b) sodium and carbon
(c) potassium and magnesium
(d) magnesium and sulphur
An element is soft and can be cut with a knife. If is very reactive and cannot be kept open in the air. It reacts vigorously with water. The element is most likely to be:
(a) Mg
(b) S
(c) P
(d) Na
What are noble gases
Calcium floats over water during the reaction with water. Give reason.
Where does the metal aluminium, used in the thermit process, occurs in the reactivity series of metals?
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.
