JOIN ADRE 2.0 Telegram Group

UV-Visible Multiple Choice Spectroscopy Questions and Answers | UV-Visible MCQs

Questions
1 Select the wavelength range corresponding to UV-visible region.
A 400-800 nm
B 200-800 nm
C 25 μm-2.5 μm
D 2.5 μm – 1mm

Answer:200-800 nm
2 If the above compound was completely reduced, what will be the possible transitions it can undergo?
A n→p*
B s→s*
C p→p*
D n→s*, s→s*

Answer:n→s*, s→s*
Advertisement
Article and Schedule Quiz Start Test!

DOWNLOAD CURRENT AFFAIRS PDF FROM APP

3 On increasing pH, phenol shows
A Q,R
B P,R
C Q,S
D P,S

Answer:P,S
4 The approximate lambda max for the above compound will be
A 214 nm
B 217 nm
C 222 nm
D 227 nm

Answer:222 nm
5 The possible transitions for water molecule in UV-visible region are
A σ →σ *
B n→π *, π→π *
C σ→σ *, n→π *
D n → σ*

Answer:n → σ*
6 Choose the right statement
A Homoannular diene is called as transoid
B Cisoid shows less intense absorption
C The base value of transoid is 214 nm
D Exocyclic double bond causes a bathochromic shift of 30 nm

Answer:The base value of transoid is 214 nm
7 The increment for α alkyl substitution on enones is
A 18
B 12
C 10
D 5

Answer:10
8 The λmax in α,β-unsaturated acids can be determined by
A Wood ward fieser
B Nielsen rules
C Fieser-kuhn rules
D All of the above

Answer:Wood ward fieser
9 The number of double bonds present in carotene is
A 5
B 10
C 11
D 18

Answer:11
10 Select one of the statements that is CORRECT regarding enones.
A n→π * is forbidden
B π →π * is forbidden
C Both n→π * and π →π * are forbidden
D n→π * is forbidden but π →π * is allowed

Answer:n→π * is forbidden

ADRE 2.0 FULL LENGTH MOCK TEST

Take Mock Tests

Missiles Mock Test Start Test!
SSC MTS Mock Test Start Test
IBPS CLERK MOCK TEST Start Test
SSC MTS 2022 JULY 26 Shift 1 (ENGLISH) Start Test!
SSC GD Previous Year Paper 2021 Nov 17 Shift - I (Hindi) Start Test!
SSC CGL Tier - 1 PYP 2022 April 21 Shift- 1 (ENGLISH) Start Test!
MPSC PAPER I MOCK TEST 1 (ENGLISH) Start Test!
IB Security Assistant Mock test 1 (english) Start Test!
UP POLICE CONSTABLE MOCK TEST 1 Start Test!
DELHI POLICE CONSTABLE MOCK TEST 1 (HINDI) Start Test!
Advertisement