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1
JEE Main 2019 (Online) 9th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The maximum possible denticities of a ligand given below towards a common transition and inner-transition metal ion, respectively, are : JEE Main 2019 (Online) 9th April Evening Slot Chemistry - Coordination Compounds Question 285 English
A
8 and 6
B
8 and 8
C
6 and 8
D
6 and 6
2
JEE Main 2019 (Online) 9th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Which one of the following about an electron occupying the 1s orbital in a hydrogen atom is incorrect ?

(The Bohr radius is represented by a0)
A
The probability density of finding the electron is maximum at the nucleus.
B
The electron can be found at a distance 2a0 from the nucleus
C
The total energy of the electron is maximum when it is at a distance a0 from the nucleus.
D
The magnitude of potential energy is double that of its kinetic energy on an average.
3
JEE Main 2019 (Online) 9th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The major products A and B for the following reactions are, respectively: JEE Main 2019 (Online) 9th April Evening Slot Chemistry - Compounds Containing Nitrogen Question 209 English
A
JEE Main 2019 (Online) 9th April Evening Slot Chemistry - Compounds Containing Nitrogen Question 209 English Option 1
B
JEE Main 2019 (Online) 9th April Evening Slot Chemistry - Compounds Containing Nitrogen Question 209 English Option 2
C
JEE Main 2019 (Online) 9th April Evening Slot Chemistry - Compounds Containing Nitrogen Question 209 English Option 3
D
JEE Main 2019 (Online) 9th April Evening Slot Chemistry - Compounds Containing Nitrogen Question 209 English Option 4
4
JEE Main 2019 (Online) 9th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
During compression of a spring the work done is 10kJ and 2kJ escaped to the surroundings as heat. The change in internal energy, $$\Delta $$U(inkJ) is :
A
- 12
B
8
C
- 8
D
12

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