1
JEE Main 2022 (Online) 28th July Evening Shift
MCQ (More than One Correct Answer)
+4
-1
Which of the following pair is not isoelectronic species?
(At. no. Sm, 62; Er, 68; Yb, 70; Lu, 71; Eu, 63; Tb, 65; Tm, 69)
2
JEE Main 2022 (Online) 28th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R
Assertion A : Permanganate titrations are not performed in presence of hydrochloric acid.
Reason R : Chlorine is formed as a consequence of oxidation of hydrochloric acid.
In the light of the above statements, choose the correct answer from the options given below
3
JEE Main 2022 (Online) 28th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Match List I with List II
| List - I (Complex) | List - II (Hybridization) | ||
|---|---|---|---|
| (A) | $$Ni{(CO)_4}$$ | (I) | $$s{p^3}$$ |
| (B) | $${[Ni{(CN)_4}]^{2 - }}$$ | (II) | $$s{p^3}{d^2}$$ |
| (C) | $${[Co{(CN)_6}]^{3 - }}$$ | (III) | $${d^2}s{p^3}$$ |
| (D) | $${[Co{F_6}]^{3 - }}$$ | (IV) | $$ds{p^2}$$ |
Choose the correct answer from the options given below :
4
JEE Main 2022 (Online) 28th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Dinitrogen and dioxygen, the main constituents of air do not react with each other in atmosphere to form oxides of nitrogen because :
Paper analysis
Total Questions
Chemistry
20
Mathematics
19
Physics
27
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