1
JEE Main 2022 (Online) 26th June Morning Shift
Numerical
+4
-1
The spin-only magnetic moment value of the most basic oxide of vanadium among V2O3, V2O4 and V2O5 is _____________ B.M. (Nearest integer)
Your input ____
2
JEE Main 2022 (Online) 24th June Evening Shift
Numerical
+4
-1
Manganese (VI) has ability to disproportionate in acidic solution. The difference in oxidation states of two ions it forms in acidic solution is ____________.
Your input ____
3
JEE Main 2021 (Online) 31st August Morning Shift
Numerical
+4
-1
The number of halogen/(s) forming halic (V) acid is ___________.
Your input ____
4
JEE Main 2020 (Online) 7th January Evening Slot
Numerical
+4
-0
Consider the following reactions :
$$NaCl{\rm{ }} + {\rm{ }}{K_2}C{r_2}{O_7} + \mathop {{H_2}S{O_4}}\limits_{(conc.)} $$$$ \to $$ (A) + side products
(A) + NaOH $$ \to $$ (B) + Side products
$$\left( B \right){\rm{ }} + \mathop {{H_2}S{O_4}}\limits_{(dilute)} + {\rm{ }}{H_2}{O_2}$$ $$ \to $$ (C) + Side products
The sum of the total number of atoms in one molecule each of (A) and (B) and (C) is
$$NaCl{\rm{ }} + {\rm{ }}{K_2}C{r_2}{O_7} + \mathop {{H_2}S{O_4}}\limits_{(conc.)} $$$$ \to $$ (A) + side products
(A) + NaOH $$ \to $$ (B) + Side products
$$\left( B \right){\rm{ }} + \mathop {{H_2}S{O_4}}\limits_{(dilute)} + {\rm{ }}{H_2}{O_2}$$ $$ \to $$ (C) + Side products
The sum of the total number of atoms in one molecule each of (A) and (B) and (C) is
Your input ____
Questions Asked from d and f Block Elements (Numerical)
Number in Brackets after Paper Indicates
No. of Questions
JEE Main 2023 (Online) 30th January Morning Shift (1)
JEE Main 2022 (Online) 25th July Morning Shift (1)
JEE Main 2022 (Online) 29th June Evening Shift (1)
JEE Main 2022 (Online) 29th June Morning Shift (2)
JEE Main 2022 (Online) 27th June Morning Shift (1)
JEE Main 2022 (Online) 26th June Morning Shift (1)
JEE Main 2022 (Online) 24th June Evening Shift (1)
JEE Main 2021 (Online) 31st August Morning Shift (1)
JEE Main 2020 (Online) 7th January Evening Slot (1)
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