1
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Change Language
For the second period elements the correct increasing order of first ionization enthalpy is :
A
Li < B < Be < C < N < O < F < Ne
B
Li < Be < B < C < O < N < F < Ne
C
Li < B < Be < C < O < N < F < Ne
D
Li < Be < B < C < N < O < F < Ne
2
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Change Language
In which case change in entropy is negative?
A
Sublimation of solid to gas
B
2H(g) $$ \to $$ H2(g)
C
Evaporation of water
D
Expansion of a gas at temperature
3
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Change Language
Conjugate base for Bronsted acids H2O and HF are :
A
OH and F , respectively
B
H3O+ and H2F+ , respectively
C
OH and H2F+ , respectively
D
H3O+ and F , respectively
4
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Change Language
The total energy of an electron in an atom in an orbit is –3.4 eV. Its kinetic and potential energies are, respectively.
A
3.4 eV, – 6.8 eV
B
3.4 eV, 3.4 eV
C
– 3.4 eV, – 3.4 eV
D
– 3.4 eV, – 6.8 eV