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प्रश्न
A metal less reactive and another metal more reactive than hydrogen are:
(a) aluminium and lead
(b) iron and magnesium
(c) copper and tin
(d) copper and mercury
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उत्तर
(c) copper and tin
Copper lies below hydrogen and tin lies above hydrogen in the reactivity series of metals.
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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
What would you observe when zinc is added to a solution of iron (II) sulphate? Write the chemical reaction that takes place.
Write the electron-dot structures for sodium, oxygen and magnesium.
Food cans are coated with tin and not with zinc because ______.
Differentiate between metal and non-metal on the basis of their chemical properties.
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?
What name is given to those metal oxides which show basic as well as acidic behaviour?
A copper coin is kept immersed in a solution of silver nitrate for some time. What will happen to the coin and the colour of the solution?
Complete and balance the following equation:
Na + O2 →
Fill in the following blank with suitable word:
The white powder formed when magnesium ribbon burns in oxygen is of ....................
With the help of examples, describe how metal oxides differ from non-metal oxides.
Why is white phosphorus kept immersed under water?
Give one example, with equation, of the displacement of hydrogen by a metal from an acid.
Name two metals (other than zinc and iron) which can displace hydrogen from dilute hydrochloric acid?
Hydrogen is not a metal but still it has been assigned a place in the reactivity series of metals. Why?
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
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
An element X forms two oxides XO and XO2. The oxide XO has no action on litmus solution but oxide XO2 turns litmus solution red.
(a) What is the nature of oxide XO?
(b) What is the nature of oxide XO2?
(c) Would you call element X a metal or a non-metal? Give reason for your choice.
(d) Can you give an example of element like X?
Rewrite the following statement by selecting the correct option.
A solution of Al2(SO4)3 in water is _____________.
