Advertisements
Advertisements
प्रश्न
Name two metals which form amphoteric oxides.
Advertisements
उत्तर
Aluminium and zinc are two metals that form amphoteric oxides.
APPEARS IN
संबंधित प्रश्न
Write the chemical reaction when iron reacts with dilute H2SO4.
Why are metals called electropositive elements whereas non-metals are called electronegative elements?
Name the metal which has been placed at the top of the reactivity series.
Which of the two metals is more reactive: copper or silver?
Complete and balance the following equation:
What happens when magnesium reacts with very dilute nitric acid? Write an equation for the reaction involved.
Name two metals which cannot displace hydrogen from dilute acids.
Can we keep sodium immersed under water? Why?
What special name is given to substances like aluminium oxide.
What is meant by the reactivity series of metals? Arrange the following metals in an increasing order of their reactivities towards water:
Zinc, Iron, Magnesium, Sodium
An acidic oxide is produced by the element:
(a) Na
(b) C
(c) Ca
(d) H
You are given a solution of AgNO3. Which of the following do you think cannot displace Ag from AgNO3solution?
(a) Magnesium
(b) Zinc
(c) Gold
(d) Copper
An element E reacts with water to form a solution which turns phenolphthalein solution pink. The element E is most likely to be:
(a) S
(b) Ca
(c) C
(d) Ag
CuSO4(aq) + Fe(s) → FeSO4(aq) + Cu(s)
FeSO4(aq) + Zn(s) → ZnSO4(aq) + Fe(s)
On the basis of the above reactions, indicate which is most reactive and which is least reactive metal out of zinc, copper and iron.
If A, B, C, D, E, F, G, H, I, J and K represent metals in the decreasing order of their reactivity, which one of them is most likely to occur in a free state in nature?
Name a metal which does not react with cold as well as hot water but reacts with steam.
Name a metal which It does not react with any physical state of water?
What is the cause of chemical bonding (or chemical combination) of atoms of elements?
Metals are generally hard. Which of the following metals is an exception and can be cut with a knife?
