UV quiz SKS

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

• infrared
• ultraviolet
• microwaves
• radiowaves

2. . Which of the following is an application of molecular spectroscopy?

• a) Structural investigation

• b) Basis of understanding of colors

• c) Study of energetically excited reaction products

• d) All of the mentioned

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

How many Hertz does 1 ppm correspond to for an PMR spectrometer operating at a radio frequency of 60 MHz and 100 MHz?

• 6 Hz, 10 Hz

• 60 Hz, 100 Hz

• 100 Hz, 60 Hz

• 10Hz, 100Hz

Tags

NGSS.HS-PS4-1

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

• Coupling constant

• Spin constant

• Spin-spin coupling

• Chemical shift

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

• Dimethylsilane

• Trimethylsilane

• Tetramethylsilane

• Methylsilane

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

• Ethane

• Dimethylether

• Diethylether

• Acetone

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

The wavelength of an absorption is 495 nm. In what part of the electromagnetic spectrum does this lie?

• Radiowave

• Infrared

• Ultraviolet-visible

• Microwave