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Unit 2/ IR/ NMR

Total questions: 20

Worksheet time: 12mins

Name
Class
Date
1.

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

a)

Br-CH = CH2

b)

CH3 – CH2 – CH3

c)

C6H5CH2

d)

CH3– CH2 – CH(CH3) – N02

2.

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

a)

Dimethylsilane

b)

Trimethylsilane

c)

Tetramethylsilane

d)

Methylsilane

3.

How many NMR signals in propane is

a)

4

b)

3

c)

2

d)

1

4.

Full form of NMR is

a)

Nuclear Magnetic Reaction

b)

Nuclear Magnetic Resonance

c)

Nuclear Mass Reaction

d)

Nuclear Mass Resonance

5.

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

a)

1

b)

2

c)

3

d)

4

6.
How many different H environment for molecule shown?
a)
4 Hydrogen environment, in (1.1.3.3) ratio
b)
4 Hydrogen environment, in (1.1.3.6) ratio
c)
3 Hydrogen environment, in (1.1.6) ratio
d)
3 Hydrogen environment, in (1.1.3) ratio
7.

Choose the CORRECT definition of quantitative analysis

a)

Measurement of the quantities of particular constituents present in a substance

b)

Measuring the physical appearance of substance

c)

Measuring the weight of a particular constituents present in a substance

8.

The following are examples of instrumental methods, EXCEPT

a)

Conductivity

b)

Chromatography

c)

Spectroscopy

d)

Gravymetry

9.
Which of the following type of electromagnetic radiation affects the bonds,vibrating ,stretching rocking...
a)
infrared
b)
ultraviolet
c)
microwaves
d)
radiowaves
10.
NMR can only be done with 
a)
molecules
b)
1H and 13C
c)
any element with a odd number of protons
d)
any element with a odd number of nucleons
11.
Splitting occurs only in 
a)
low resolution H NMR
b)
high resolution H NMR
c)
low resolution C NMR
d)
high resolution C NMR
12.
The finger print region is 
a)
different for each organic compound
b)
 from 600 - 1400 cm-1
c)
both the above
13.

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

a)

Dimethylsilane

b)

Trimethylsilane

c)

Tetramethylsilane

d)

Methylsilane

14.
The greater the polarity of a bond the_______________its IR absorption
a)
weaker
b)
stronger
c)
more charged
d)
smaller the wavenumber
15.
Infrared radiation cannot pass through a vacumn (T/F)
a)
True
b)
False
16.

Which color has the longest waves?

a)

red

b)

orange

c)

yellow

d)

green

17.

Which of the following are not one of the uses of infrared waves?

a)

Thermal imaging

b)

Curing cancer

c)

Remote control

d)

Electrical heater

18.

What is one of the damages of the use of infrared waves?

a)

Cause cancer

b)

Liver spots

c)

Skin burns

19.
Which of the following type of electromagnetic radiation affects spin of the nucleons
a)
infrared
b)
ultraviolet
c)
microwaves
d)
radiowaves
20.
NMR is used to determine
a)
the function groups present in inorganic molecules
b)
the molar mass of the compound
c)
the structure of the molecule
d)
the number of different carbon or hydrogen enviroments in the molecule

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