Which ether has been used as an anesthetic in surgery?

A. Enflurane containing ether linkage

B. Formaldehyde containing carbonyl

C. Methanol containing hydroxyl only

D. Methanethiol containing sulfhydryl

Which thiol is responsible for the foul odor in skunk spray?

3-methyl-1-butanethiol compound

Chloroform used as anesthetic only

Which classification applies to CH3CH2Cl in forensic samples?

Primary alkyl halide with halogen on primary carbon

Secondary alkyl halide with halogen on secondary carbon

Tertiary alkyl halide with halogen on tertiary carbon

Aromatic alkyl halide with halogen on benzene ring

Which alcohol is classified as secondary by structure?

2-butanol with two carbons attached to OH carbon

Ethanol with one carbon attached to OH carbon

tert-butanol with three carbons attached to OH carbon

Methanol with no carbon attached to OH carbon

Which alcohol is classified as tertiary by structure?

tert-butanol with three carbons bonded to OH carbon

Ethanol with one carbon bonded to OH carbon

2-butanol with two carbons bonded to OH carbon

Methanol with no carbon bonded to OH carbon

Which intermolecular force is strongest in alcohols?

Hydrogen bonding between molecules only

Ionic bonding between molecules only

Metallic bonding between molecules only

Dispersion forces between molecules only

Which property is characteristic of ethers?

Dipole forces without hydrogen bonding

Strong hydrogen bonding between molecules

Ionic bonding between carbon and oxygen

Metallic bonding between oxygen atoms

Which aldehyde has two carbon atoms in its chain?

A. Ethanal also called acetaldehyde

B. Methanal also called formaldehyde

C. Propanal also called propionaldehyde

D. Butanal also called butyraldehyde

Which ketone has three carbon atoms in its chain?

Butanone also called methyl ethyl ketone

Pentanone also called diethyl ketone

Hexanone also called dipropyl ketone

Which ether is named methoxyethane in IUPAC?

CH3OCH2CH3 as molecular structure

CH3OCH3 as molecular structure only

CH3CH2OCH2CH3 as molecular structure

CH3CH2OCH2CH2CH3 as molecular structure

Which thiol is correctly named 1-propanethiol?

A. CH3CH2CH2–SH with sulfhydryl group

B. CH3–SH with sulfhydryl group only

C. (CH3)3C–SH with sulfhydryl group only

D. CH3CH2CH2–OH with hydroxyl group

A forensic toxicologist finds methanol in blood. Why is this dangerous?

It is metabolized into formaldehyde in the body

It is metabolized into acetone in the body only

It is metabolized into octanal in the body only

It is metabolized into butanal in the body only

Which alcohol is least soluble in water during forensic analysis?

1-octanol with long carbon chain structure

Methanol with short carbon chain structure

Ethanol with two carbon chain structure

Ethylene glycol with hydroxyl groups

Which alcohol is most soluble in water samples?

Methanol with one carbon atom only

1-octanol with eight carbon atoms only

1-decanol with ten carbon atoms only

1-dodecanol with twelve carbon atoms

A seized bottle is suspected to contain chloroform. Which property supports this identification?

It is an alkyl halide with high boiling point

It is an aldehyde with strong odor only

It is an alcohol with hydrogen bonding only

It is a ketone with strong polarity only

In arson cases, ethanol is often detected. Why is this expected?

It is flammable and commonly added to fuels

It is odorless and used to mask explosives

It is insoluble in fuels and not combustible

It is heavier than water and sinks quickly

Which aldehyde is most associated with tissue preservation in forensic morgues?

Formaldehyde widely used in embalming

Acetone widely used in fingerprint work

Acetaldehyde widely used in beverages

Octanal widely used in perfumes only

A sample from a crime scene contains acetone. Which property confirms its identity?

It is a ketone with three carbon atoms only

It is an aldehyde with two carbon atoms only

It is an ether with oxygen atom bonded only

It is an alcohol with one hydroxyl group only

Which compound classification helps in drug residue identification?

Thiols detected in skunk spray evidence

Alkyl halides detected in chloroform traces

Aldehydes detected in orange oil samples

Ethers detected in anesthetic drug traces

A criminologist tests a sample suspected of being methanol. Which physical property distinguishes it from ethanol?

Methanol is more toxic even in small doses

Methanol has larger nonpolar carbon chain

Methanol is insoluble in polar water sample

Methanol has higher molecular mass only

Which alcohol is classified as primary by forensic chemists?

Ethanol with OH carbon bonded to one carbon

2-butanol with OH carbon bonded to two carbons

tert-butanol with OH carbon bonded to three carbons

Phenol with OH group bonded to benzene

Which functional group is important in detecting ethanol in toxicology tests?

Hydroxyl group bonded to carbon atom

Carbonyl group bonded to carbon atom

Sulfhydryl group bonded to carbon atom

Halogen atom bonded to carbon atom

Which forensic evidence would most likely contain aldehydes?

Fragrance samples collected from victims

Tear gas residues collected from canisters

DNA swabs collected from crime suspects

Ballistic residues collected from firearms

Which forensic evidence would most likely contain ketones?

Nail polish remover bottles from suspects

Arson fuel residues collected from houses

Rubber gloves collected from crime scenes

Hair strands collected from victims only

Which structural feature explains why methanol poisoning is harder to detect?

Methanol is colorless and odorless in solution

Methanol is yellowish and pungent in odor

Methanol is heavier and insoluble in water

Methanol is colored and easy to identify

Which structural feature explains why ethanol is used in arson accelerants?

Ethanol is volatile and burns easily in air

Ethanol is nonvolatile and stable in air

Ethanol is insoluble and heavy in fuels

Ethanol is nonpolar and cannot burn

Which forensic test most likely detects thiols?

Odor detection of rotten egg smell only

Color change of oxidizing agents only

Production of flammable vapors only

Precipitation of white solids only

Which forensic context would require analysis of ethers?

Misuse of anesthetics during abduction cases

Preservation of body tissues in embalming

Identification of methanol in illegal drinks

Detection of ethanol in drunk driving cases

Which forensic context would require identification of aldehydes?

Embalming chemicals used in morgues

Methane released from buried corpses

Methanol used in illegal liquor shops

Octane residues collected from arson sites

Which classification applies to CH3Br when found in a lab raid?

Primary alkyl halide with halogen on primary carbon

Secondary alkyl halide with halogen on secondary carbon

Tertiary alkyl halide with halogen on tertiary carbon

Aromatic alkyl halide with halogen on benzene ring

Which classification applies to CH3CHBrCH3 in seized evidence?

Secondary alkyl halide with halogen on secondary carbon

Primary alkyl halide with halogen on primary carbon

Tertiary alkyl halide with halogen on tertiary carbon

Aromatic alkyl halide with halogen on aromatic carbon

Which classification applies to (CH3)3CCl in chemical storage rooms?

Tertiary alkyl halide with halogen on tertiary carbon

Primary alkyl halide with halogen on primary carbon

Secondary alkyl halide with halogen on secondary carbon

Aromatic alkyl halide with halogen on aromatic carbon

Which forensic sample would most likely contain aldehydes?

Preserved tissue samples from autopsies

Ballistic casings from crime scenes only

Fingerprint powders from crime scenes

Gunshot residues from fired weapons

Semi Exxam-2G

Quiz

•

Science

•

University

•

Practice Problem

•

Hard

ORONGAN, MAED_SCI

Used 2+ times

FREE Resource

50 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which functional group defines alcohols in forensic chemistry?

Hydroxyl group bonded to carbon

Carbonyl group bonded to carbon

Sulfhydryl group bonded to carbon

Halogen atom bonded to carbon

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which suffix identifies alcohols in systematic naming?

–ol added to the root hydrocarbon

–al added to the root hydrocarbon

–one added to the root hydrocarbon

–thiol added to the root hydrocarbon

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which suffix identifies aldehydes in systematic naming?

–al added to the root hydrocarbon

–ol added to the root hydrocarbon

–one added to the root hydrocarbon

–thiol added to the root hydrocarbon

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which suffix identifies ketones in systematic naming?

–one added to the root hydrocarbon

–ol added to the root hydrocarbon

–al added to the root hydrocarbon

–thiol added to the root hydrocarbon

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which alcohol is tested in breath analyzers for drunk driving?

Ethanol found in alcoholic beverages

Methanol found in paint removers only

Butanol found in industrial solvents

Propanol found in laboratory alcohol

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which aldehyde is widely used as a preservative in morgues?

A. Formaldehyde also called methanal

B. Acetone also called propanone only

C. Acetaldehyde also called ethanal

D. Octanal also called citrus aldehyde

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which ketone is used in fingerprint analysis in crime labs?

Acetone widely used as solvent only

Butanone widely used as medicine only

Pentanone widely used as flavor only

Hexanone widely used as fragrance

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