Here, at Sourav Sir's Classes, we strive, so that you succeed. Our team of experienced faculty is dedicated to ensuring that you stay light years ahead of the competition. Our classes employ a tried and tested procedure, and, we have a legacy of producing students who not only crack the exam but excel at all of them. Our goal is to nurture the brightest minds of the present and future generations, and we are absolutely delighted to have you on board! TIFR is a National Centre of the Government of India, under the umbrella of the Department of Atomic Energy, as well as a deemed University awarding degrees for master's and doctoral programs. The Institute was founded in 1945 with support from the Sir Dorabji Tata Trust under the vision of Dr. Homi Bhabha. At TIFR, we carry out basic research in physics, chemistry, biology, mathematics, computer science and science education. Our main campus is located in Mumbai, with centres at Pune, Bengaluru and Hyderabad.

1. GS-2018 (Chemistry)
TATA INSTITUTE OF FUNDAMENTAL RESEARCH
WrittenTestinCHEMISTRYͲDecember10,2017
Duration:Threehours(3hours)
Name:_______________________________________________Ref.Code:____________
Pleasereadallinstructionscarefullybeforeyouattemptthequestions.
1. PleasefillͲindetailsaboutname,referencecodeetc.ontheanswersheet.TheAnswer
Sheet is machineͲreadable. Use only Blue/Black ball point pen to fillͲin the answer
sheet.
2. IndicateyourANSWERONTHEANSWERSHEETbyblackeningtheappropriatecirclefor
eachquestion.Donotmarkmorethanonecircleforanyquestion:thiswillbetreated
asawronganswer.
3. ThisisamultiplechoicequestionpaperwithONEsectionhavingatotalof40questions.
Eachcorrectanswerwillgetyou3marks.EverywronganswerwillgetyouͲ1mark.
Marksarenotawardedordeductedwhenaquestionisnotattempted.Itisbetternot
toansweraquestionifyouarenotsure.
4. WeadviseyoutofirstmarkthecorrectanswersontheQUESTIONPAPERandthento
TRANSFERthesetotheANSWERSHEETonlywhenyouaresureofyourchoice.
5. Roughworkmaybedoneonblankpagesofthequestionpaper.Ifneeded,youmayask
forextraroughsheetsfromaninvigilator.
6. Use of calculators is permitted. Calculator which plots graphs is NOT allowed.
MultipleͲusedevicessuchascellphones,smartphonesetc.,CANNOTbeusedforthis
purpose.
7. Inansweringthequestions,pleasechoosetheoptionthatbestdescribesthesolutionto
theproblem.
8. DoNOTaskforclariĮcationsfromtheinvigilatorsregardingthequestions.Theyhave
been instructed not to respond to any such inquiries from candidates. In case a
correction/clariĮcationisdeemednecessary,theinvigilator(s)willannounceitpublicly.
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