Conversion of yellow phosphorus to red phosphorous is done in retorts at 250-450°C in the

by
Question: Conversion of yellow phosphorus to red phosphorous is done in retorts at 250-450°C in the
[A].

presence of an inert atmosphere.

[B].

presence of a reducing atmosphere.

[C].

absence of air.

[D].

presence of an oxidising atmosphere.

Answer: Option C

Explanation:

No answer description available for this question.

A, CD, GHI, ?, UVWXY

by
Question: A, CD, GHI, ?, UVWXY
[A].

LMNO

[B].

MNO

[C].

MNOP

[D].

NOPQ

Answer: Option C

Explanation:

Each term consists of consecutive letters in order. The number of letters in the terms goes on increasing by one at each step.

Also, there is a gap of one letter between the last letter of the first term and the first letter of the second term; a gap of two letters between the last letter of the second term and the first letter of the third term; and so on.

So, there should be a gap of three letters between the last letter of the third term and the first letter of the desired term.

Yield of urea can be increased with excess ammonia and higher pressure & temperature, but because of __________ this is normally not done.

by
Question: Yield of urea can be increased with excess ammonia and higher pressure & temperature, but because of __________ this is normally not done.
[A].

increased biuret formation

[B].

high corrosion rate

[C].

increased cost of equipment

[D].

all (a), (b) & (c)

Answer: Option D

Explanation:

No answer description available for this question.