1
JEE Main 2020 (Online) 7th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The bond order and the magnetic characteristics of CN- are :
A
3, paramagnetic
B
$$2{1 \over 2}$$, paramagnetic
C
3, diamagnetic
D
$$2{1 \over 2}$$, diamagnetic
2
JEE Main 2020 (Online) 7th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The number of possible optical isomers for the complexes MA2B2 with sp3 and dsp2 hydridized metal atom. respectively, is :
Note : A and B are unidentate netural and unidentate monoanionic ligands, respectively.
A
0 and 2
B
0 and 0
C
0 and 1
D
2 and 2
3
JEE Main 2020 (Online) 7th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Identify the correct labels of A,B and C in the following graph from the options given below :

JEE Main 2020 (Online) 7th January Evening Slot Chemistry - Gaseous State Question 39 English
Root mean square speed (Vrms); most probable speed (Vmp); Average speed (Vav)
A
A - Vav ; B - Vrms ; C - Vmp
B
A - Vrms ; B - Vmp ; C - Vav
C
A - Vmp; B- Vav; C - Vrms
D
A - Vmp ; B - Vrms ; C - Vav
4
JEE Main 2020 (Online) 7th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
For the following reactions

JEE Main 2020 (Online) 7th January Evening Slot Chemistry - Haloalkanes and Haloarenes Question 103 English
Ks and Ke, are respectively, the rate constants for substitution and elimination and $$\mu = {{{k_s}} \over {{k_e}}}$$ the correct options is
A
$${\mu _B} > {\mu _A}$$ and Ke(A) > Ke(B)
B
$${\mu _A} > {\mu _B}$$ and Ke(B) > Ke(A)
C
$${\mu _B} > {\mu _A}$$ and Ke(B) > Ke(A)
D
$${\mu _A} > {\mu _B}$$ and Ke(A) > Ke(B)
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