Question 1 :
Which of the following organic compound with molecular formula C3H6Cl2 exhibits only one signal in the IH NMR spectrum?
Question 2 :
Which of the following has three types of hydrogens in the following compounds?
Question 3 :
How many Hertz does 1 ppm correspond to for an PMR spectrometer operating at a radio frequency of 60 MHz and 100 MHz?
Question 4 :
The distance between the centers of the peaks of doublet is called as?
Question 6 :
An organic compound having the molecular formulae C10H14 exhibited two singlets in the 1H NMR spectrum and three signals in the 13C NMR. What is the compound?
Question 7 :
The 1H NMR spectrum of a dilute solution of a mixture of acetone and dichloromethane in CDCl3 exhibits two singlets of 1:1 intensity. What will be the molar ratio of acetone to dichloromethane in the solution?
Question 10 :
An organic compound (MF; C8H10O) exhibited the following 1H NMR special data: 62.5 (3H, s), 3.8 (314, s), 6.8 (2H, d, J 8 Hz), 7.2 (2H, d, J 8 Hz) ppm. What will be the compound among the choices?
Question 11 :
Which of the following is used as detector crystal in ESR spectrometer
Question 13 :
Electron spin resonance involves detecting the detection of a physical phenomenon of _________ of electromagnetic radiation.
Question 14 :
Electron spin resonance is also known as which of the following?
Question 15 :
The value of the magnetic moment is known as which of the following?
Question 17 :
When the electrons are aligned either parallel or antiparallel to the direction of the external magnetic field, the electrons will precess about the axis at a frequency that is proportional to which of the following?
Question 18 :
If the population of ground state exceeds the population of the excited state a net absorption of __________ radiation takes place.
Question 19 :
The population ratio can be given by which of the following laws?
Question 20 :
ESR sensitivity increases with __________ temperature and with _________ magnetic field strength.