1
JEE Main 2019 (Online) 12th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The combination of plots which does not represent isothermal expansion of an ideal gas is –

JEE Main 2019 (Online) 12th January Evening Slot Chemistry - Thermodynamics Question 107 English
A
A and D
B
B and D
C
B and C
D
A and C
2
JEE Main 2019 (Online) 12th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The element that does NOT show catenation is :
A
Ge
B
Si
C
Sn
D
Pb
3
JEE Main 2019 (Online) 12th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The aldehydes which will not form Grignard product with one equivalent Grignard reagents are -

JEE Main 2019 (Online) 12th January Evening Slot Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 155 English
A
B and D
B
C and D
C
B, C and D
D
B and C
4
JEE Main 2019 (Online) 12th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
If the de Broglie wavelength of the electron in nth Bohr orbit in a hydrogenic atom is equal to 1.5 $$\pi $$a0 (a0 is Bohr radius), then the value of n/z is -
A
0.75
B
0.40
C
1.50
D
1.0
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