Q3 of 43 Page 188

Mention physical properties of dihydrogen gas.

Physical properties of dihydrogen gas are:

i. It is colourless, odourless and tasteless gas.


ii. It is insoluble in water.


iii. It is much lighter than air and also lighter than all other gases.


iv. Hence, it is the lightest gas.


v. It is a neutral gas.


More from this chapter

All 43 →
2

Mention the missing information in In the following chemical reactions:

(i) + H2O(l) H2SO4(aq)


(ii). S(s) + SO2(g)


(iii). + H2O(l) H2CO3(aq)


(iv). S(s) + H2(g)


(v). 2Na(s) + 2NaOH(aq) + H2(g)


(vi). Zn(s) + H2O(g) → ZnO(s) +


(vii). CH4(g) + H2O(g) CO(g) + 3H2(g)


(viii). CuO(s) + Cu(s) + H2O(g)


(ix). H2(g) + 2KH(s)


(x). MgSO4(aq) + Mg(OH)2(s) + (NH4)2SO4(aq)


(xi). SO2(g) + 2H2S(g) 3S(s) + 2H2O(g)


(xii). 2SO2(g) 2SO3(g)


(xiii). CuSO45H2O(s) + con. H2SO4(l)

3

Mention physical properties of non-metallic elements.

 3

Write uses of dihydrogen gas.

 3

Write physical properties of ammonia gas.