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GATE BT-2017 Answer Key | Solutions Discussion
This is post no. 351 under the main topic.
(03-01-2017, 04:46 PM)sadaf188 Wrote: Plz anyone try ques 49 also its answer is given 100 in answer key...mine is 10000 minutes
substrate concentration 0.1mol/lit is equal to 10 mol/100lit....dS/dT =k * S.... 10-³ * 10 ..... 10-².... which is nothing but 1/100... 100 mins
 
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This is post no. 352 under the main topic.
(03-01-2017, 05:30 PM)Santhosh Ram Wrote:
(03-01-2017, 04:46 PM)sadaf188 Wrote: Plz anyone try ques 49 also its answer is given 100 in answer key...mine is 10000 minutes
substrate concentration 0.1mol/lit is equal to 10 mol/100lit....dS/dT =k * S.... 10-³ * 10 ..... 10-².... which is nothing but 1/100... 100 mins
dS/dT=k*S....it cannot be true becoz units is not same on both the sides...
dS (moles) / dT (min) = k (given moles/min) * S(moles).
 
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This is post no. 353 under the main topic.
(03-01-2017, 05:27 PM)SunilNagpal Wrote:
(03-01-2017, 04:46 PM)sadaf188 Wrote: Plz anyone try ques 49 also its answer is given 100 in answer key...mine is 10000 minutes
Is the following link addressing the same question?
http://www.biotechnologyforums.com/showt...0#pid11610

If not, could you please post the question(s)?

Or if someone could post the question sheet as well as official answer key?

Nope. Its a different question. Same answer!
[Image: 585_217875_0_587434_r_bt_q49.jpg]

[Image: 585_217875_0_587434_r_bt_q43.jpg]
 
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This is post no. 354 under the main topic.
(03-01-2017, 06:01 PM)travellingsalesman Wrote:
(03-01-2017, 05:27 PM)SunilNagpal Wrote: Is the following link addressing the same question?
http://www.biotechnologyforums.com/showt...0#pid11610

If not, could you please post the question(s)?

Or if someone could post the question sheet as well as official answer key?

Nope. Its a different question. Same answer!
[Image: 585_217875_0_587434_r_bt_q49.jpg]

[Image: 585_217875_0_587434_r_bt_q43.jpg]
Yes the question is....a zero order kinetics.......

If we follow even simple unitary method also then...
1min........10^-3 moles consumed
100min....0.1 moles consumed
Whereas conc of A is 0.1moles/liter....so for 100litre its is 0.1*100=10 moles.
So for 10 moles...10000 min are required
 
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This is post no. 355 under the main topic.
Qno :51
E.corI restriction sites on 10kb dna
I didnt know how can 8kb fragment be generated?? pls explain.
 
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This is post no. 356 under the main topic.
(03-01-2017, 04:45 PM)sadaf188 Wrote:
(03-01-2017, 04:04 PM)masthanbasha Wrote: given condition dy/dx=0,d2y/dx2=0 satisfy when y=1
If y = 1 then there is no point of y=f(x)
Which is given in d question.
Wat my solution was y=x^3....this satisfies all d conditions so I calculated y=8 when x=2.
yes it seems to be correct sadaf
 
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This is post no. 357 under the main topic.
It was a classical case of zero order kinetics:

Concentration left at any time, t = -kt + Initial concentration

So that, 0 = -kt + 0.1
ie t = 0.1/1000 = 100 mins


The problem with unitary method is very interesting though ( something that will fetch you all some marks on this question).

A zero order reaction can easily be approached using a unitary method (provided the question setter stays alert in keeping all the units in sync). This time they messed with the unit of k (by giving its unit as mol per min) whereas in a zero order reaction, k is supposed to be mol per litre per min or say concentration per minute).

So, it's a mistake at examiner's end in giving wrong units for the reaction constant. Those who used classical formulas got the right answer, but those who were more analytical in this question ended up on the wrong road.

In my view, both the 100 and 10,000 are are right answers in students' perspective, the mistake is at examiner's end.
(03-01-2017, 06:09 PM)sadaf188 Wrote:
(03-01-2017, 06:01 PM)travellingsalesman Wrote: Nope. Its a different question. Same answer!
[Image: 585_217875_0_587434_r_bt_q49.jpg]

[Image: 585_217875_0_587434_r_bt_q43.jpg]
Yes the question is....a zero order kinetics.......

If we follow even simple unitary method also then...
1min........10^-3 moles consumed
100min....0.1 moles consumed
Whereas conc of A is 0.1moles/liter....so for 100litre its is 0.1*100=10 moles.
So for 10 moles...10000 min are required
Sunil Nagpal
MS(Research) Scholar, IIT Delhi (Alumnus)
Advisor for the Biotech Students portal (BiotechStudents.com)
Computational Researcher in BioSciences at a leading MNC


Suggested Reads:
Top Biotech Companies | Top places to work
Indian Biotech Companies and Job Openings
Aiming a PhD in Top Grad School? | These are the Important Points to Consider
Careers in Biotechnology | A list of various Options
Biotechnology Competitive Exams in India
 
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This is post no. 358 under the main topic.
(03-01-2017, 05:27 PM)SunilNagpal Wrote:
(03-01-2017, 04:46 PM)sadaf188 Wrote: Plz anyone try ques 49 also its answer is given 100 in answer key...mine is 10000 minutes
Is the following link addressing the same question?
http://www.biotechnologyforums.com/showt...0#pid11610

If not, could you please post the question(s)?

Or if someone could post the question sheet as well as official answer key?
Sir, You can find both the question and answer key from the below link

http://gate.iitr.ernet.in/?page_id=604
 
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This is post no. 359 under the main topic.
can it be challenged?
 
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This is post no. 360 under the main topic.
(03-01-2017, 08:38 PM)Santhosh Ram Wrote: can it be challenged?
Yes it can be challenged
Sunil Nagpal
MS(Research) Scholar, IIT Delhi (Alumnus)
Advisor for the Biotech Students portal (BiotechStudents.com)
Computational Researcher in BioSciences at a leading MNC


Suggested Reads:
Top Biotech Companies | Top places to work
Indian Biotech Companies and Job Openings
Aiming a PhD in Top Grad School? | These are the Important Points to Consider
Careers in Biotechnology | A list of various Options
Biotechnology Competitive Exams in India
 
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