List of top Chemistry Questions on Acidic and Basic Oxides asked in JEE Main

Given below are two statements :
Statement I : The number of pairs among $[Al_2O_3, Cr_2O_3]$, $[Cl_2O_7, Mn_2O_7]$, $[Na_2O, V_2O_3]$ and $[CO, N_2O]$ that contain oxides of same nature (acidic, basic, neutral or amphoteric) is 4.
Statement II : Among $Na_2O, Al_2O_3, CO$ and $Cl_2O_7$, the most basic and acidic oxides are $Na_2O$ and $Cl_2O_7$, respectively.
In the light of the above statements, choose the correct answer from the options given below :

5.8 g of Aniline is converted into benzanilide with some reaction sequences. Calculate the mass of benzanilide formed, if percentage yield of reaction is 82%. \[ \text{Ph} - \text{COCl} + \text{PhNH}_2 \xrightarrow{\text{Py}} \text{Benzanilide} \]

Given below are two statements. Statement I: First ionisation enthalpy of Cr is greater than that of Mn. Statement II: Second and third ionisation enthalpies of Cr are less than that of Mn. In the light of above statements, choose the correct option.

Given below are two statements:
Statement (I): $\textit{An element in the extreme left of the periodic table forms acidic oxides.}$
Statement (II):$ \textit{Acid is formed during the reaction between water and oxide of a reactive element present in the extreme right of the periodic table.} In the light of the above statements, choose the correct answer from the options given below:$

Consider the following oxides:
V_2O_5, Cr_2O_3, Mn_2O_7, V_2O_3, VO_2
A number of oxides which are acidic is $ x $.
Consider the following complex compound:
[Co(NH_2CH_2CH_2NH_2)_3](SO_4)_3
The primary valency of the complex is $ y $.
What is the value of $ x + y $ is?

If $ x |x - 3| + 3 |x - 2| + 1 = 0 $, then the number of real solutions is.