BITSAT 2010

amphoteric Ge₂o

Coordination no - 8

Reducing sugars - Fehling's solution

Abhirup...the fullerene option is right

With mass spectrometry, discrete peaks were observed corresponding to molecules with the exact mass of sixty or seventy or more carbon atoms. In 1985, Harold Kroto (then of the University of Sussex), James R. Heath, Sean O'Brien, Robert Curl and Richard Smalley, from Rice University, discovered C60, and shortly thereafter came to discover the fullerenes - Wikipedia

i also marked U with the same explanation...actually i put all the alphabets with their respective numbers and then it was coming 21 which is U

raman spectroscopy?

And also whats the ans for that fullerenes qs ???

What is salt coke ????

B C

A E

H H

? M

FIND ?

(POSTED THIS QUESTION EARLIER ALSO BUT DONT KNOW IF THAT WAS CLEAR)

ENGLISH

(1) isn't he ?

(2) regale - entertained

(3) brick : kiln

(4) chastise : punish

And i had 19 mins remaining when i started the 12 extra questions and finished it with 1 min to go. It could have been 25 mins remaining for the 12 questions but i wasted by time on an electrostatic sum

and they provide a 8-page pad which was quite sufficient for the whole exam.

50% of the questions were quite easy. And the rest 50% involved some mugging up abilities, some tricky conceptual questions, and maybe 3% of them were on the tougher side (which would include 2 from english paragraph cause i had to read the paragraph 6 times and then i could answer the given question). And the extra 12 questions --as far as the set which i got, maths was easy, physics conceptual, chemistry had 3 organic(one iupac naming, one reaction based and the other stability of 1 tert-butyl 4 methyl cycloheptane) and one calculation based sum from thermo. It was easy. But the IUPAC naming was a little on the difficult side might seem weird but it was little confusing.

Hey Abhirup Thanks a lot !!!

U're the first one to post updates on targetiit

NOW CHEMISTRY

***Thermo Questions involving H=U+PV

***1 Organic question involving Kjeldahl's method.

***Reducing sugars and non-reducing sugars can be distinguished - NaHCO3, Biuret test, Ninhydrin Test, Fehling's solution

***Fullerene structure was known by : three dirty options and mass spectrometry(i marked mass spectrometry so remember it)

***If E is the energy of the ground state level of an electron in an one-dimensional box of length L. Then what is the energy of the 2nd excited state - a) 9E, b) 4E/L, c) 2E, d) 3E

***Then a few involving atomic radius (n²/Z), velocity (Z/n), etc typed questions

***At what temperature will the rms velocity of SO₂( at NTP) be equal to that of Cl₂. (no need for options. solve it yourself)

***At what temperature will the average velocity of H2 (at 20K) be equal to that of O₂

***Then there was 1 question from organic
C₂H₆---(A)--->C₂H₄
Ethylene reacts with H₂O, acid catalysed KCN and H₂SO4 to give B,C,D. Identify B,C,D. Options were given but dont remember it. And here A is temperature not any reagent

***Which involves the highest temperature?
a)Self -reduction
b)Slag elimination
c) Reduction with something(dont remember)
d) All same temperature.

*** Then a question was given based on that fact H₂O₂ forms a blue layer with ether. Dont remember exactly the question nor the options

*** Solid State--Co-ordination number of BCC structure.

*** Mg has greater second ionization enthalpy than first. Yet it forms MgCl₂ and not MgCl. Reason?

*** one periodic table question based on the trend of ionisation energy along the period.

*** two question of co-ordination. Dont remember it. One involved Hg(SCN)Co something....dont remember exactly. Other was something with charge on Cu but it was an easy one.

*** Amphoteric oxide : Ge₂O, Na₂O, SO₂, Cl₂O₇

*** most soluble sulphate : CaSO₄, SrSO₄, BaSO₄, another one from the same group.

will post more when and if i remember

brick:kiln

Starting with English and logical reason (questions which i remember)

There were 6 fill in the blanks of which i remember one.

***He is a petty thief, ______?
a) isnt he?
b) wasnt he?
c) doesnt he?
d) was he?

There were also fill in the blanks with prepositions, one with appropriate phrases.

***2 paragraph -comprehensions and 3 arrange the jumbled sentences

***Meaning of regale....---excited, fluttered, entertained, punished?

*** B C
A E
H H
? M What is ? ? -----X, U, W, V

*** bread:bakery::brick:??
a) dont know
b) kiln
c) farm
d) mine

*** celestial:heavenly
a) chastetise:punish
b)chaste:rebel
c) rue:broken
d) ascribe:assert

one of my friend gettin 292.. he said questions were mainly conceptual typed

My seniors who gave BITSAT (11th-14th) said:

Maths- very easy
Chem- memory based ("trivial" topics consisted 25% paper)
Phy- conceptual (hardly 20 questions were calculative, rest reasoning)

NOTE: A lot of trick questions in physics and maths...accounting for major chunk of negatives.

Will keep updating. [on 17th, 20th and 25th..]

and others please do the same...

I WILL TRY AND MEMORIZE MY QUESTIONS (AS MUCH AS I CAN) AND PUT IT UP HERE ON MONDAY EVENING...MY DATE IS ON 17TH MAY

Pata nahi, tht is wht one of my friends told me ki its worth attemting...matlab even if u do 5-6 correctly (which can be done if u got the time), u cover most of ur negative marks.

Anyways, pehle toh we have to worry about completing all 150 Qn(s) with 15-20 mins remaining to give the xtra-12 a shot. :O

Thanks , Avik , but are sure about the extra 12 , because one of my seniors in Pilani [BITSAT Score : 375] told me that they were of JEE level !! ???

Feedback i received frm some of my friends (these aint my own views)-
*Maths- Basic...CBSE school level.
*Physics- Ok/not tough.
*Chem.- Bit memory based/but manageable (Do not forget Metallurgy ores & Evryday Life.)

*Rely on pencil fr rough work...so tht u can use an eraser if the need arises.
*Try learning some new english words. (Some random meaning based Qn(s) are being/ can be fired.)
*The Xtra-12 are not difficult, rather of same level as previous ones.