Chemical Test

Question 1

Reagent and purpose of bromination

Answer 1

Reagent: Br2
Purpose: Classify alkanes (3<2<1*)

Question 2

Lucas test reagent

Answer 2

HCl and ZnCl2 catalyst

Question 3

Jones test reagent and purpose

Answer 3

CrO3 in dilute H2SO4

For ROHs only (only 1* and 2* reacts)

Question 4

Iodoform test reagent and purpose

Answer 4

Reagent: I2 and NaOH
Purpose: test for methyl ketones and methyl alcohols

Question 5

Indicator for iodoform

Answer 5

Yellow iodoform

Question 6

Tollens test reagent

Answer 6

Ag(NH3)2

Question 7

Brady’s reagent, reagent?

Answer 7

2,4 DNP H2SO4, ethanol

Question 8

Benedicts test is almost the same as

Answer 8

Fehlings test

Question 9

Benedicts test reagent and purpose

Answer 9

Reagent: CuSO3, Na2CO3, sodium nitrate
Purpose: for reducing sugars

Question 10

Benedicts test indicator

Answer 10

Brick red

Question 11

Fehlings test reagent

Answer 11

CuSO4, NaOH, Sodium tartrate

Question 12

Ozazone formation reagent and purpose

Answer 12

Reagent: phenylhydrazine
Purpose: for sugars

Question 13

Sakaguchi test is for

Answer 13

Arginie in proteins

Question 14

Ninhydrin test for

Answer 14

Detect ammonia or 1/2 amine

Detect fingerprints

Question 15

Test for presence of carbohydrates

Answer 15

Molish test

Question 16

Test for presence of phenols

Answer 16

Ferric chloride test