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Question

Study the following reactions and mark the correct properties shown by water :
(i) SO3+H2OH2SO4
(ii) Cl2O7+H2O2HCLO4
(iii)Na2O+H2O2NaOH
(iv)Cao+H2OCa(OH)2

A
All oxides react with water to give hydroxides
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B
Acidic oxides are formed by metals and basic oxides by non-metals
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C
Non-metal oxides combine with water to form acids while metallic oxides combine with water to form alkalies
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D
Acidic oxides are stronger than basic oxides since they form strong acids
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Solution

The correct option is C Non-metal oxides combine with water to form acids while metallic oxides combine with water to form alkalies
(i) SO3+H2OH2SO4
(ii)Cl2O7+H2O2HClO4
SO3 and Cl2O7 are non metallic oxides
from acid on reacting with water
(iii)Na2O+H2O2NaOH
(iv) C2O+H2OCa(OH)2
Na2O and CaO are metallic oxide form
base on reacting with water
Ans (C) Non metal oxides combines with water to
from acids while metallic oxides combine
with water to form alkalies.

1091104_927186_ans_2021bb0ffcf04dbbb0bcce51d39f83b9.png

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