ORG LAB (HYDROGENS AND CARBONS)

Hydrogen (H) and Carbon (C)

Hydrocarbons consist of?

It only contains sigma bonds

Which of the following is TRUE about saturated hydrocarbons?

isopentane

.Which of the following compounds is a saturated hydrocarbon

None of the above

Which of the following chemicals will react with saturated hydrocarbons at room temperature?

Cycloalkane

Which of the following is NOT an unsaturated hydrocarbon?

the pi bond

The characteristic reactions of unsaturated hydrocarbons takes place in?

It will produce a snooty flames

Which of the following is TRUE when an aromatic hydrocarbon undergoes an ignition test?

Na2Cr2O7 and H2SO4

Which are the reagents used for Baeyer’s Test?

It is a method for detecting unsaturation

Which of the following is TRUE about Baeyer’s test?

2-pentane

Which of the following will produce a brown MnO2 precipitate in Baeyer’s test ?

Benzene OR 2-pentene

Which of the following will have a sooty flame in Ignition test but will have a negative result in Baeyer’s test?

hydroxyl (-OH) group bonded to an alkyl carbon

Alcohols are organic compounds containing?

isopropanol

Which of the given compounds is a secondary alcohol?

H2CrO4

What are the reagents used for Chromic acid tests?

no reaction

Which of the following is true for tertiary alcohols in Chromic acid tests?

isobutanol

Which of the following compounds will produce a ketone in a Chromic acid test?

HCl/ZnCl₂

What are the reagents used for Lucas’s test?

stable electronic resonance of carbocation

The Lucas test reacts with alcohols in SN1 reaction and gives a quick positive result due to which factor?

Tertiary alcohol

Which of the following compounds react immediately to the Lucas reagent to form an immiscible upper layer of alkyl chloride?

Isopropanol

Which of the following will give a positive result on chromic acid test but not in Lucas's test?

-OH

Which constituent is directly bonded to the benzene ring in phenols?

The -OH group is directly attached to the benzene ring

Why are phenols not considered aromatic alcohols?

benzyl alcohol

Which of the following is NOT a phenolic compound?

It is more acidic than alcohols

Which of the following is TRUE about phenols?

phenoxide ion

Which of the following is the conjugate base of phenol?

FeCl3

Phenols readily react with which of the following compounds to produce a ferric phenoxide salt?

violet

Which color of the ferric phenoxide salt confirms the presence of a phenol?