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

hi,abhirup how much did u score?

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.

MATHS:

*** The slope of normal is x₂+4. Find the curve which passes through (2,4)

*** Distance between the 2 lines 2x+2y+z=5 and 2x+2y+z=11.

*** a+ibc+id=x+iy. Find a²+b²c²+d²
a) x²+y²
b) x²-y²
c) √x²+y²
d) √x²-y²

*** 4 3D geometry questions. One was distance between a point and a line, another involving angle between 2 lines and the 2 others find the intersection point.

*** Few from functions out of which 2 were very tough according to me.

*** Few from Straight Lines and Circles.

*** 25x²-144y²=3600. find the focus.

*** ^pi/6_pi/4∫lntanxdx

*** f(x) = ax+bcx-a. Find f(f(x)

*** f(x) and g(x) are two continuous functions in [a,b] such that f(a)=g(a) and f(b)=g(b). Then there will be atleast one point for both the curves where
a) the tangents are parallel
b) the tangents are parallel to x-axis
c) the normals are parallel
d) the normals are perpendicular to the x-axis

*** Not much from Complex no or Logarithm

*** 2sin∂=cos∂. Find the number of solutions.

*** 7cos∂+5sin∂=2k+1. find the no. of integral solutions of k

*** 3x+4y=1. y=mx+1. Find the no. of integral solutions of m such that x is also an integer.

*** Nothing from vector(for me)

*** there was one from tautology which i dont know so i dont remember anything of it.

will post more when and if i remember

Hey Abhirup Thanks a lot !!!

U're the first one to post updates on targetiit

http://www.targetiit.com/iit-jee-forum/posts/bits-questions-asked-16128.html

and

http://www.targetiit.com/iit-jee-forum/posts/bitsat-discussion-16175.html

motive is same but no one is responding :(

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

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..]

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

even i will let everyone know .....mine is on the 17th