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प्रश्न
Which of the two metals is more reactive: copper or silver?
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उत्तर
Of the two metals, copper is more reactive than silver.
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संबंधित प्रश्न
A solution of CuSO4 in water is .................... in colour.
(a) Pink
(b) Blue
(c) Colourless
(d) Green
Write equations for the reactions of iron with steam.
An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be:
Name the metal which has been placed at the bottom of the reactivity series.
Complete and balance the following equation:
Na + O2 →
With the help of examples, describe how metal oxides differ from non-metal oxides.
Which of the following elements would yield an acidic oxide.
Na, S, C, K, H
Which of the following elements would yield a neutral oxide?
Na, S, C, K, H
What type of oxides are formed when metals combine with oxygen? Explain with the help of an example.
What happens when calcium reacts with chlorine? Write an equation for the reaction which takes place
What happens when calcium reacts with water? Write the chemical equation of the reaction of calcium with water.
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 Iron with dilute hydrochloric acid.
Name the products formed. Also indicate the physical states of all the substances involved.
The elements whose oxides can turn phenolphthalein solution pink are:
(a) Na and K
(b) K and C
(c) Na and S
(d) K and P
An acidic oxide is produced by the element:
(a) Na
(b) C
(c) Ca
(d) H
The metals which can produce amphoteric oxides are:
(a) sodium and aluminium
(b) zinc and potassium
(c) calcium and sodium
(d) aluminium and zinc
Which one of the following four metals would be displaced from the solution of its salt by the other three metals?
(a) Zn
(b) Ag
(c) Cu
(d) Mg
What is the characteristic of the electronic configuration of noble gases?
Choose the correct alternative and rewrite the following:
Which of the following is lue in colour?
Where does the metal aluminium, used in the thermit process, occurs in the reactivity series of metals?
