d and f Block Elements · Chemistry · WB JEE

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MCQ (Single Correct Answer)

WB JEE 2022
The correct order of acidity of the following hydra acids is
WB JEE 2021
A solution of NaNO3, when treated with a mixture of Zn dust and 'A' yields ammonia. 'A' can be
WB JEE 2020
The reaction for obtaining the metal (M) from its oxide (M2O3) ore is given by$${M_2}{O_3}(s) + 2Al(l)\buildrel {Heat} \over \longrightarrow A{l_2}{O...
WB JEE 2018
At room temperature, the reaction between water and fluorine produces
WB JEE 2018
$$[X] + Dil.\,{H_2}S{O_4} \to [Y]:$$ Colourless, suffocating gas$$[Y] + {K_2}C{r_2}{O_7} + {H_2}S{O_4} \to $$ Green colouration of solution.Then, [X] ...
WB JEE 2017
The correct basicity order of the following lanthanide ions is
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