1
JEE Main 2018 (Online) 15th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Ejection of the photoelectron from metal in the photoelectric experiment can be stopped by applying 0.5 V when the radiation of 250 nm is used. The work function of the metal is :
A
4 eV
B
4.5 eV
C
5 eV
D
5.5 eV
2
JEE Main 2018 (Online) 15th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
For which of the following reactions, $$\Delta $$H is equal to $$\Delta $$U?
A
N2(g) + 3H2(g) $$ \to $$ 2NH3(g)
B
2HI(g) $$ \to $$ H2(g) + I2(g)
C
2NO2(g) $$ \to $$ N2O4(g)
D
2SO2(g) + O2(g) $$ \to $$ 2SO3(g)
3
JEE Main 2018 (Online) 15th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
In the molecular orbital diagram for the molecular ion, N2+, the number of electrons in the $$\sigma $$2pz molecular orbital is :
A
0
B
1
C
2
D
3
4
JEE Main 2018 (Online) 15th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the following is a Lewis acid?
A
PH3
B
B(CH3)3
C
NaH
D
NF3
JEE Main Papers
2023
2021
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
CBSE
Class 12