MyQuestionIcon

4

You visited us 4 times! Enjoying our articles? Unlock Full Access!

Physical Properties of Alkynes

Assertion :Pr...

Question

Assertion :Prussian blue is formed in the Prussian blue assay for total phenols. Reason: Prussian blue is produced by oxidation of ferrous ferrocyanide salts.

A

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

C

Assertion is correct but Reason is incorrect

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

Both Assertion and Reason are incorrect

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Prussian blue is a dark blue pigment produced by oxidation of ferrous ferrocyanide salts.
In analytical chemistry, it is formed in the prussian blue. assay for total phenols samples and phenolic standards are given acidic $f e r r i c$ $c h l o r i d e$ and $f e r r i y a n i d e$ , which is reduced to $f e r r o c y a n i c l e$ react to form $p r u s s i a n$ $b l u e$ .

Suggest Corrections

thumbs-up

0

Similar questions

Q. Assertion: The impurities such as

{SiO}_{2}

present in iron ore is removed by

{CaCO}_{3}

CaO

formed by decomposition of

{CaCO}_{3}

{SiO}_{2}

Q. Assertion: The compressibility factor for

H_{2}

H e

(1 + \frac{P b}{R T})

Reason: The compressibility factor for

H_{2}

H e

can be derived from Van der Waal's equation.

Assertion – The non-fusible impurities present in iron ore are removed by $C a C O_{3}$ .

Reason: $C a C O_{3}$ which decomposes into $C a O$ and $C O_{2}$ . The $C a O$ formed reacts with $S i O_{2}$ to remove silica

Assertion

Lithium sulphate does not form alums.

Reason

$L i^{+}$ is too small to form a stable lattice required for double-salt/alum formation.

Assertion (A) Phenols give o-and p-nitrophenol on nitration with conc. $H N O_{3} a n d H_{2} S O_{4}$ mixture.
Reason (R) - OH group in phenol is o-,p-directing.
(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion is wrong statement but reason is correct statement.
(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Alkynes - Physical Properties

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Physical Properties of Alkynes

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon