A. Man-made emeralds will not be considered as valuable as naturally produced emeralds. No evidence to support this
B. Natural emeralds are produced by heat and pressure much more frequently than by chemical action. Seems to be correct, but who knows - they may be produced more frequently, but what if the production is of much less quantity? In this case chemical action therefore is much more profitable than mining for small quantities
C. The types of material from which emeralds are formed are not found on the Earth’s surface. Correct - if the material used to produce is not available on earth surface, the company got to dig the earth for the material which is same is same as mining for natually produced emeralds. And additionall costs to turn the material into emerlad in artificial process
D. Laboratory conditions are difficult to replicate in a large-scale factory. Level of difficulty in setup doesnt impact the expected profits.
E. The gases that will mix with superheated water are so toxic that workers could suffer from a number of serious medical conditions if the handling of such gases is not strictly controlled. OOS
_________________

SKK

Certain gemstones are formed by magma, a material found deep inside the Earth, that has pushed toward the surface and solidified; others are created when superheated water and gases cool. When chemical action, heat, or pressure changes the existing structure of rocks, they may recrystallize to form gemstones such as emeralds. A large chemical company plans to create a new source of profits by applying certain of the chemicals it manufactures to specifically chosen rock samples, which would be a much less expensive way to produce emeralds than mining them.

which one of the following, if true, poses the most serious problem for the success of the company’s
plan?

A. Man-made emeralds will not be considered as valuable as naturally produced emeralds.
--> best choice

B. Natural emeralds are produced by heat and pressure much more frequently than by chemical action.
--> irrelevant

C. The types of material from which emeralds are formed are not found on the Earth’s surface.
--> okay so what they can dig up more, basically nothing relevant

D. Laboratory conditions are difficult to replicate in a large-scale factory.
--> not of much use

E. The gases that will mix with superheated water are so toxic that workers could suffer from a number of serious medical conditions if the handling of such gases is not strictly controlled.
--> irrelevant to conclusion

IMO A
_________________

Practice Practice and practice...!!

If my reply /analysis is helpful-->please press KUDOS
If there's a loophole in my analysis--> suggest measures to make it airtight.

still don't feel fully convinced why C cannot be the correct answer.. Could someone explain the reasoning involved here in detail

Conclusion = A large chemical company plans to create a new source of profits by applying certain of the chemicals it manufactures to specifically chosen rock samples, which would be a much less expensive way to produce emeralds than mining them.

The author of the argument used price to support its conclusion. Choice C showed its problem. At the same time, although choice A talks about its profitability, whether the artificial gemstone have more valuable than natural one did not show anything relate to decreasing the cost of production.
_________________

Rules for posting in verbal gmat forum, read it before posting anything in verbal forum
Giving me + 1 kudos if my post is valuable with you

I was between A and D and chose A. why is D wrong? If lab conditions are not suiting industry conditions then there will be decline in profits. Can anybody please explain my error in reasoning ????

I miss this question.

Why C is wrong?

is C considered contradicting the evidence?

pls, help explain.

The sole purpose of the company is to gain profits by replicating the natural process of producing gems. The focus here is on the profits that the company is trying to make rather than on the process or way in which the gems would be produced.

A. Man-made emeralds will not be considered as valuable as naturally produced emeralds. - Since the passage is concerned about company making profits, hence this is the best option - Correct
B. Natural emeralds are produced by heat and pressure much more frequently than by chemical action. - Irrelevant information - Incorrect
C. The types of material from which emeralds are formed are not found on the Earth’s surface. - Company is planning to produce gems with chemicals - Incorrect
D. Laboratory conditions are difficult to replicate in a large-scale factory. - Irrelevant information - Incorrect
E. The gases that will mix with superheated water are so toxic that workers could suffer from a number of serious medical conditions if the handling of such gases is not strictly controlled. - Nothing mentioned about this in the passage - Out of scope - Incorrect

Since this is a weaking question, we can take the statement given in answer choices as true.



Posted from GMAT ToolKit
_________________

My posts: Solving Inequalities, Solving Simultaneous equations, Divisibility Rules

My story: 640 What a blunder!

My page: Ed Prep