Tag: oxides of elements

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Questions Related to oxides of elements

Multiple choice chemistry chemistry of non-metals oxides of elements simple oxides oxygen

Most basic oxide among the following is ?

  1. ${{\text{P}} _{\text{2}}}{{\text{O}} _{\text{5}}}$
  2. ${\text{SnO}}$
  3. ${{\text{B}} _{\text{2}}}{{\text{O}} _{\text{3}}}$
  4. ${\text{MgO}}$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Basic oxides are typically formed by metals, especially alkali and alkaline earth metals. Among the choices, magnesium oxide (MgO) is a strongly basic metal oxide, whereas P2O5 and B2O3 are acidic, and SnO is amphoteric.

Multiple choice chemistry chemistry of non-metals oxides of elements simple oxides oxygen

Which one of the following is normal oxide?

  1. $K{O _2}$
  2. $Ba{O _2}$
  3. $Si{O _2}$
  4. $Cs{O _2}$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A normal oxide contains the O(2-) ion. SiO2 is a covalent network solid that behaves as a normal acidic oxide. KO2 and CsO2 are superoxides, and BaO2 is a peroxide.

Multiple choice chemistry chemistry of non-metals oxides of elements simple oxides oxygen

Which of the following is/are peroxide(s) ?

  1. $ PbO _{2} $
  2. $ H _{2}O _{2} $
  3. $ SrO _{2} $
  4. $ BaO _{2} $
Reveal answer Fill a bubble to check yourself
B,C,D Correct answer
Explanation

In $ {PbO} _{2}, $ Its $ Pb^{+4}$ & $ 2O^{-2} $


In $ {H _{2}O} _{2},$ there is peroxide linkage

$ H-O-O-H $ 

In $ SrO _{2}, $ as Sr is alkaline earth metal 
$ \therefore $ Its $ Sr^{2+} $

$ \therefore $ Its $ O _{2}^{-2}, (\bar{O}-\bar{O}) $ peroxide linkage 

In $ BaO _{2},$ Its $ Ba^{{+2}}\therefore O _{2}^{-2} $

$ \bar{O}-\bar{O} $ peroxide linkage 

Hence, the correct options are $\text{B}$, $\text{C}$ and $\text{D}$

Multiple choice chemistry chemistry of non-metals oxides of elements simple oxides oxygen

Which of the following oxides is amphoteric in character?

  1. $CaO$
  2. $CO _2$
  3. $SiO _2$
  4. $SnO _2$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Option (D) is correct.
$SnO _2$ is amphoteric in character.
$SnO _2 + 2NaOH \rightarrow Na _2SnO _3 + H _2O$
$SnO _2 + 4HCl \rightarrow SnCl _4 + 2H _2O$+$CO _2$ is acidic in character.
$SiO _2$ is very weak acid.
$CaO _2$ is basic in nature.
Multiple choice chemistry chemistry of non-metals oxides of elements simple oxides oxygen

Which of the following oxides is/are not amphoteric in character?

  1. CaO
  2. $CO _2$
  3. $SiO _2$
  4. $SnO _2$
Reveal answer Fill a bubble to check yourself
A,B,C Correct answer
Explanation

$CaO$, $CO _2$ and $SiO _2$ when dissolved in water gives base ,hence they are basic oxides.


$SnO _2$ do not react with water, so it is amphoteric. 

Hence options A,B, & C are correct.

Multiple choice chemistry chemistry of non-metals oxides of elements simple oxides oxygen

Which of the following oxides are not neutral?

  1. $CO$
  2. $SnO _2$
  3. $ZnO$
  4. $SiO _2$
Reveal answer Fill a bubble to check yourself
B,C,D Correct answer
Explanation

 $CO$ is a neutral oxide insoluble in water, but behaves as amphoteric compound. 


$SiO _2$ amphoteric oxide, $SnO _2$ basic oxide and  $ZnO$  is amphoteric oxide.

Hence options B,C & D are correct.

Multiple choice chemistry chemistry of non-metals oxides of elements simple oxides oxygen

Select the correct statements:

  1. s-block metal oxides are basic in nature, except $BeO$ which is amphoteric.
  2. p-block metal oxides are acidic in nature, except $NO$,$ N _2O$,$ CO$.

  3. d-block metal oxides are basic, acidic, and amphoteric in nature.

  4. d-block metal oxides are only basic in nature.
Reveal answer Fill a bubble to check yourself
A,B,C Correct answer
Explanation

(A) BeO is amphoteric in nature. It reacts with acids as well as alkalies.  Oxides of other s block metal elements are basic in nature. They react only with acids. hence, the option A is correct.

(B) The oxides $NO, N _2O,CO$   are neutral. Whereas the  remaining oxides of p block metals are acidic in nature. Thus, the option B is correct.

Some of the d block metal oxides are basic in nature, some of them acidic in nature where as the rest are amphoteric in nature. Thus, the option C is correct and option D is incorrect.