Logical Reasoning - Statement and Argument - Discussion

Each question given below consists of a statement, followed by two arguments numbered I and II. You have to decide which of the arguments is a 'strong' argument and which is a 'weak' argument.

Give answer:

  • (A) If only argument I is strong
  • (B) If only argument II is strong
  • (C) If either I or II is strong
  • (D) If neither I nor II is strong and
  • (E) If both I and II are strong.


Statement: Should high chimneys be installed in industries?


  1. Yes. It reduces pollution at ground level.
  2. No. It increases pollution in upper atmosphere.

[A]. Only argument I is strong
[B]. Only argument II is strong
[C]. Either I or II is strong
[D]. Neither I nor II is strong
[E]. Both I and II are strong

Answer: Option A


Pollution at ground level is the most hazardous in the way of being injurious to human and animal life. So, argument I alone holds.

Gurpreet Singh said: (Apr 27, 2011)  
As in argument II,even if the pollution is released off in the upper atmosphere,it will indirectly harm the humans and animal life in the later period or in the long term.

According to me option C should be appropriate for this statement.

Jitin said: (Aug 19, 2011)  
Agreed with Gurmeet.

Wendell said: (Oct 24, 2011)  
Yes I also do agree with gurpreet.

Rikesk said: (Apr 20, 2012)  
I think Gurpeet singh is right.

Gayathri Kurra said: (Aug 30, 2013)  
My opinion is also same, I didn't hope option 'A' was right, because as well as air also getting polluted and leads to green house effect, so I go with option 'C'.

Nkaore said: (Jan 11, 2014)  
I think both are strong. Upper atmosphere pollution also affects us indirectly.

Ian said: (Mar 11, 2014)  
I consider both to be strong. Even if it was in the upper atmosphere it still poses a threat to humans.

Paru said: (Apr 26, 2014)  
I also consider both points are valid, its like not throwing garbage in one of my room while throwing it in the other, pollution is hazardous both in lower and upper atmosphere.

Albertanny said: (Aug 12, 2014)  
I do agree with the answer given because there could be ways to avoid air pollution even at present Indian industries need to be first approved by committee of Air and Control act of 1981. So option A is perfect and to be justified.

Sukrati said: (Aug 15, 2014)  
I too agree with Ian and Paru.
According to me, answer must be option D.

Ankit_Sood said: (Aug 17, 2014)  
Both are strong as both will affect us directly or indirectly.

Deepak said: (Aug 17, 2014)  
As both the options will reduce pollution at one level and increase at other level of the atmosphere, both the options are strong arguments to one another rather than the Main statement. So, I think neither of them are strong arguments and would go with option D

Divyanshu Bhushan said: (Oct 12, 2014)  
We can't go with both statements here. I know both statement are strong but both statement is contradictory to each other. So in my opinion C is correct option.

Mohit Thummar said: (Dec 20, 2014)  
Ya its right in case of upper atmospheric level it giving support to us and this because of this pollution global worming also increase side by side is alter the rain pattern of global.

Aniket said: (May 8, 2015)  
If we operate chimney in upper atmosphere leads to holes in ozone layer as well as harmful for birds.

Trishul said: (Jul 10, 2015)  
Adding to others point, my understanding is that while low chimneys concentrates pollutants to some areas at ground level, high chimneys disperses those pollutants over a much larger area and they eventually settle down to the ground. Clearly both have their pros and cons.

For me Option C is right.

Vinod said: (Jul 27, 2015)  
Both argument are strong. Definitely long chimneys will reduce pollution at ground level, on the other hand it will significantly pollute upper environment, and eventually toxic in the form of rain will show it's hazardous effect.

Ankit Kumar said: (Aug 25, 2015)  
In the thermal power plant it should be noted that the height of chimney is considerable at a constant height not to be bigger so that it causes the atmospheric press high.

So 2 statement is not correct I think 1 be the best option A.

Bhavya said: (Sep 16, 2015)  
If the smoke is released at upper atmosphere. It will eventually deplete the environment at ground level. Pollution will deplete the entire atmosphere. So, Shouldn't B be the answer ?

Anand Pandey said: (Apr 21, 2016)  
The answer is C because the chimney is also polluted upper atmosphere which directly impacted on the ozone layer.

Abhinav said: (May 26, 2016)  
I think the given option A is right answer because the pollution at ground level causes more effect to living things than upper pollution.

Palak said: (Aug 17, 2016)  
For me, the answer will be C.

Kaustubh said: (Oct 3, 2016)  
As far as I think, pollution at the ground or in the atmosphere is hazardous.

So, it is Option E.

Shraddha said: (Dec 27, 2016)  
It is either of the two arguments.

Pollution in the upper atmosphere is equally hazardous.

According to me, the right answer is Option (C).

Harsh said: (Feb 19, 2017)  
Both the points are valid there, A does not seem to be the right answer.

Abhishek said: (Apr 25, 2017)  
The Upper layer pollution affect the Ozone layer.

Yashasvi Singhal said: (Jul 26, 2017)  
E must be the answer because argument 2 is strong enough with respect to the 1st one.

Setika Nag said: (Oct 18, 2018)  
Yes, option A. Pollution at ground level is reduced so argument I is correct but argument 2 states negatively state that pollution in the upper atmosphere increases so ground level pollution is acceptable.

Ubani said: (Oct 19, 2018)  
What is the difference between "Either of Both"? Please tell me.

Yash said: (May 25, 2020)  
Agree, thanks @Gurmeet.

Yash said: (May 25, 2020)  
The correct option is E.

Rushi said: (Mar 17, 2021)  
Agree, Thanks @Gurpreet.

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