d and f Block Elements · Chemistry · WB JEE
MCQ (Single Correct Answer)
1
The common stable oxidation states of Eu and Gd are respectively
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2
Identify the ion having $$4 f^6$$ electronic configuration.
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3
Which of the following species exhibits both LMCT and paramagnetism?
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4
A solution of NaNO3, when treated with a mixture of Zn dust and 'A' yields ammonia. 'A' can be
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5
The reaction for obtaining the metal (M) from its oxide (M2O3) ore is given by
$${M_2}{O_3}(s) + 2Al(l)\buildrel {Heat} \over \longrightarrow A{l_2}{O_3}(l) + 2M(s)$$, (s = solid, l = liquid) in that case, M is
$${M_2}{O_3}(s) + 2Al(l)\buildrel {Heat} \over \longrightarrow A{l_2}{O_3}(l) + 2M(s)$$, (s = solid, l = liquid) in that case, M is
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6
At room temperature, the reaction between water and fluorine produces
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7
$$[X] + Dil.\,{H_2}S{O_4} \to [Y]:$$ Colourless, suffocating gas
$$[Y] + {K_2}C{r_2}{O_7} + {H_2}S{O_4} \to $$ Green colouration of solution.
Then, [X] and [Y] are
$$[Y] + {K_2}C{r_2}{O_7} + {H_2}S{O_4} \to $$ Green colouration of solution.
Then, [X] and [Y] are
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8
The correct basicity order of the following lanthanide ions is
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9
Which of the following statements regarding Lanthanides is false?
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