CHEM 103 LAB Exam | Verified Exam Questions and Answers | Latest Updated Study Material 2026

CHEM 103 LAB Exam | Verified Exam Questions and Answers | Latest
Updated Study Material 2026
Question:
What color and what type of reaction does Baeyer's test indicate when reacted with a Alkane?
Answer:

STAYs purple NEGATIVE reaction

Question:
What color and what type of reaction does Baeyer's test indicate when reacted with a Alkene?
Answer:

TURNS red POSTIVE reaction

Question:
Bromine in CCl4 with Alkane
Answer:

turns the red-orange (NEGATIVE)

Question:
Bromine in CCl4 with Alkene
Answer:

decolorizes (POSITIVE)

Question:
Density
Answer:

Mass/ Volumes

Question:
Beer's law
Answer:

A=?bc A=Absorbance Absorbance=2-log(%Transmittance) ?= molar absorptivity b= pathlength c=
concentration

, Question:
What is curcumin
Answer:

yellow compound present in turmeric

Question:
What is used to extract yellow curcumin in Turmeric?
Answer:

Isopropyl alcohol

Question:
How is pH determined by using Curcumin?
Answer:

Redish- BASE Yellowish- addition of ACID

Question:
What is added to Tollen's test?
Answer:

n-butyraldehyde

Question:
What happens when Tollen's test is performed on an aldehyde?
Answer:

it REACTS and turns silver

Question:
What happens when Tollen's test is performed on a ketone?
Answer:

NO REACTION

Question:
Hydrozone derivatives formation with aldehyde
Answer:

CRYSTALIZES