Unit 2/ IR/ NMR

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

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

Full form of NMR is

• Nuclear Magnetic Reaction

• Nuclear Magnetic Resonance

• Nuclear Mass Reaction

• Nuclear Mass Resonance

Tags

NGSS.HS-PS4-3

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

• 1

• 2

• 3

• 4

How many different H environment for molecule shown?

• 4 Hydrogen environment, in (1.1.3.3) ratio
• 4 Hydrogen environment, in (1.1.3.6) ratio
• 3 Hydrogen environment, in (1.1.6) ratio
• 3 Hydrogen environment, in (1.1.3) ratio

Choose the CORRECT definition of quantitative analysis

• Measurement of the quantities of particular constituents present in a substance

• Measuring the physical appearance of substance

• Measuring the weight of a particular constituents present in a substance

The following are examples of instrumental methods, EXCEPT

• Conductivity

• Chromatography

• Spectroscopy

• Gravymetry

Which of the following type of electromagnetic radiation affects the bonds,vibrating ,stretching rocking...

• infrared
• ultraviolet
• microwaves
• radiowaves

NMR can only be done with 

• molecules
• ¹H and ¹³C
• any element with a odd number of protons
• any element with a odd number of nucleons