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8743703
الفريق العلمي
Description
Organic lab
Quiz by
Momen Alma7sere
, updated more than 1 year ago
More
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Created by
Momen Alma7sere
almost 7 years ago
210
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Resource summary
Question 1
Question
In sep- funnel we mixed the layer by?
Answer
Shaking
Filtration
Swirling
A+C
Question 2
Question
Why we add (Nacl) in extraction experiment?
Answer
To remove impurities
To wash the organic layer
To remove water
B+C
Question 3
Question
The position of fractionating colume?
Answer
Behind receive adapter
Between distilling flask and condenser
Between condenser and receive adapter
A+B
Question 4
Question
The function of " glass beads" in fractional colume?
Answer
provide large surface area
more efficient separate
To prevent boiling
A+B
Question 5
Question
The role of boiling chips?
Answer
Remove impurities
ensure smooth boiling
prevent bumping
B+c
Question 6
Question
The techniques that "chromatography" depends on?
Answer
-absorption
-partition
-ion exchange
All of them
Question 7
Question
The rate of (sn1) reaction depends on?
Answer
Depend on the concentration of two of its reactants.
The concentration of one reactant
Depend on temperature
All of the above
Question 8
Question
T-butyl alcohol is more soluble in water than 1-butanol. Why?
Answer
Due to the big size of t-butyl
1-butanol more Electronegativity
T-butyl more branching
1-butanol have more hydrogen bonds
Question 9
Question
In alcohol reaction we add cold HCl. Why cold?
Answer
To decrease the reaction temperature
To prevent formatting methyl propene
To increase the solubility
A+B
Question 10
Question
In sep-funnel we add NaHCo3 to the organic solution. why?
Answer
Its a base
To react with unreacted Hcl
To form neutral solution
All of the above
Question 11
Question
The function off adding Cacl to the organic solution?
Answer
To remove the acid
To remove the base
To remove water
All of the above
Question 12
Question
The rate of SN2 reaction rely on?
Answer
The concentration of one reactant
Temperature
Stability
Concentration of the two reactants
Question 13
Question
All of these are oxidation agents except
Answer
H2CrO4
Kmno4
Na2Cr2o7
NaHCo3
Question 14
Question
The way to obtain the aldehyde begor get over oxidation?
Answer
Uv
X ray
Color change
All of the above
Question 15
Question
2°and 3° alcohol can go over oxidation by
Answer
Drastic condition
Highly acidic condition Temperature and concentration
Adding Hcl
A+B
Question 16
Question
When the temperature of cyclohexanol rise to 40°c We cool it why?
Answer
To prevent explode rhe solution
To prevent melting the compound
To prevent over oxidation
All of the above
Question 17
Question
Aspirin is a common name for :
Answer
Acetyl acid
Acetoxybenzoic Acid
Acetylsalicylic acid
Salicylic Acid
Question 18
Question
The usage of Salicylic acid is: 1) anti-inflammatory 2)anti pyretic 3)powerfull analogie 4)Repair offissues
Answer
1,2
1,2,3
1,3
All of the above
Question 19
Question
The material that binder Aspirin tablet
Answer
Starch
Buffer
Acetylsalicylic acid
Caffeine
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