NMR spectroscopy

Which of the following has three types of hydrogens in the following compounds?

• Br-CH = CH2

• CH3 – CH2 – CH3

• C6H5CH2

• CH3– CH2 – CH(CH3) – N02

The distance between the centers of the peaks of doublet is called as?

• Coupling constant

• Spin constant

• Spin-spin coupling

• Chemical shift

H2, CH4, C2H6 and C6H6 exhibit which PMR spectra?

• Singlet

• Doublet

• Triplet

• Quintet

Which of the compound is taken as standard for recording chemical shift?

• Dimethylsilane

• Trimethylsilane

• Tetramethylsilane

• Methylsilane

How many NMR signals in propane is

• 4

• 3

• 2

• 1

Which of the following would not give singlet signal in NMR?

• Ethane

• Dimethylether

• Diethylether

• Acetone

Full form of NMR is

• Nuclear Magnetic Reaction

• Nuclear Magnetic Resonance

• Nuclear Mass Reaction

• Nuclear Mass Resonance

The phenomenon in which resonance of proton A is said to have been split by proton B is known as

• Spin-spin splitting

• Coupling constant

• Chemical shift

• Spin Constant

How many NMR signals would be given by the compound (CH3)2CHCH2CH3

• 1

• 2

• 3

• 4

Which of the following type of electromagnetic  radiation has the longest wavelength

• infrared
• ultraviolet
• microwaves
• radiowaves