Correct Answer:- Option-D
Question28:-A plot of log[A] Vs time(t) gives a straight line with negative slope. The order of the reaction is :
A:-0
8:-1
C:-2
D:-3
Correct Answer:- Option-B
Question29:-The nature of electronic spectra of 'd' block elements is mainly due to :
A:-Incomplete d-orbitals
B:-Term splitting in different crystal field geometry
C:-Presence of hydrated ions
D:-Removal of degeneracy of d-orbitals
Correct Answer:- Option-A
Question30:-How many Bravais lattices can exist in nature ?
A:-32
B:-17
C:-14
D:-7
Correct Answer:- Option-C
Question31:-How many ESR lines are observed if an unpaired electron when closed to two non-equivalent protons is placed
in magnetic field ?
൧-2
8:-4
C:-6
D:-8
Correct Answer:- Option-B
Question32:-For which one of the following process is inter system crossing (ISC) essential ?
A:-Fluorescence
B:-Radioactive decay
C:-Chemiluminescence
D:-Phosphorescence
Correct Answer:- Option-D
Question33:-The molecules of *H_20° belongs to the point group :

AS D4
8:-0%
೦-೮

0:03:
Correct Answer:- Option-C
Question34:-Which one of the following types of bonding is true for ferrocene ?
A:-Localised Fe-C bond
B:-Delocalised Fe-C 0010 `
C:-lonic bond having ‘Fe*(2+) (-C_5H_5-)_2°
D:-Hydrogen bridge bonding
Correct Answer:- Option-B
Question35:-What is the effect of hydrogen bonding on the IR absorption of N-H group ?
A:-It shifts to lower wave number
B:-It shifts to higher wave number
C:-No change is observed
D:-None of these
Correct Answer:- Option-A
Question36:-A symmetry element which distinguishes maleic acid from fumaric acid is :
^- 0 2
8
‏وی‎
‎D:-None of the above
Correct Answer:- Option-A
Question37:-How many hyperfine lines in ESR spectrum are shown by ‘Mn*2+* ?
൧:-6
B:-5