Messages posted by saharshakumar

dude organic chemistry is so simple and intresting subject.

there are not many reactions but they are limited.

prepartion of one group is reaction of another groups.

my advise is that:

READ THROUGHLY ISOMERISM & MECHANISM> THEN SEE THE CHANGE.

BUY ARIHANT ORGANIC BOOK(GOOD ONE TO READ) .

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the rate of change of velocity(or speed) per unit time is known as acceleration.

v/t=a

(m/s)/s=m/s² =unit of acceleration.

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Naphthalene has a symmetric structure and is non polar while azulene is polar.

i make u sure that:

board(CBSE) doesnt ask beyond the text book.

even in exams board copies same to same from book.

so first complete all the text book.

then buy 2009 sample papers prescribed by CBSE.

THEN NO ONE STOPS HIM GETTING ABOVE 90%.

TRUST ME AND RATE ME!

Acetaldehyde can be converted into acetylene in the following steps:

CH₃CHO --------------- reduction(LiAlH₄)-------> CH₃CH₂OH ------HBr------> CH₃CH₂Br------ KOH(alc.) ------> CH₂=CH₂_---------Br₂_-------->CH₂(Br)-CH₂(Br)----------------------- 2KOH(Alc)-----------> Acetylene + 2KBr + 2H₂O

hope u UNDERSTAND!

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we have to exclude 4 members and we have to include two members then the total members are 16 and now we have to only select remaiming 9 members out of these 16 coz we have already inluded two special members

so the number of ways is ¹⁶ C₉

we have to exclude 4 members and we have to include two members then the total members are 16 and now we have to only select remaiming 9 members out of these 16 coz we have already inluded two special members

so the number of ways is ¹⁶ C₉ .

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it not integrable function.

wanna see more open arihant book.

if ur basics are strong then IIT is nothing for man.

IITJEE doesnt takes test but they analyse how the student see or tackle problem.

it depends on u see JEE problems and crack.

keep u r fundas clear then nooooooooo problem.

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it is a good one

f(x) is twice differntiable s.t. f(a) = 0; f(b) = 2; f(c) = -1; f(d) = 2; f(e) = 0 in [a,e]

and g(x) = (f(x))² + f''(x).f(x)

=> g(x) = f(x){f(x) + f''(x)}

since f(a) = f(e) = 0

=> g(a) = g(e) = 0

again f(b) = 2 and f(c) = -1 => f(x₁) = 0; b < x₁ < c

=> g(x₁) = 0

also f(c) = -1 and f(d) = 2 => f(x₂) = 0; c < x₂ < d

=> g(x₂) = 0

hence f(x) gives 4 zeroes to g(x)

from the function f(x) + f''(x)

since f(x) is twice differentiable therefore f(x) + f''(x) gives opposite signs from b to c and c to d

which shows that g(x) has atleast two more zeroes in [a,e]

hence minimum number of zeroes of g(x) will be 6 .

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take my advise:

maths: ML KHANNA(for only getting fundas and problem solving approach)

BUT MUST BUY ARIHANT IIT OBJECTIE MATHEMATICS(wonder ful book)

PHYSICS:H C VERMA(best)

DC PANDEY(mechnics)-good one

CHEMISTRY:

physical-OP TANDAN

INORGANIC-OP TANDAN

ORGANIC-ARIHANT

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ok i understamd.

yes it is true in both books theres

is something which not going to asked in JEE.

TAKE MY ADVISE:

see ML KHANNA for studying it touches every topic in good way.

TRY quetions from that(not each and every).

AND THE MAIN:

must buy arihant iit objective mathematics by sk goyal.

I HAVE NOT SEEN SUCH AWONDER FUL BOOK.

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no both are not good books.

morisson byod is a good book but it takes u away from IITJEE.

it is good book for those who want details.

op tandan is also good book but not best.

Go and see arihant organic chemistry it is a good book.

the quality is that it resonates with JEE syllabus.

and represent chemistry of organic in simple way.

TRUST ME!

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domain is

R-[0,1}

as u know the given part should be greater than 0.

where as denominator is greatest integer function.

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what hi?

i m giving u punch line.

are u preparing for IITs.

then complete NCERT chem .

then go and buy a good books for iit(arihant organic).

MOrrison byod is also good but it is to hectis some topics away from jee.

over all it is a good book.

but dont make it as permanent book for jee.

stay in touch with syllabus.

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which question.

7/10.

ajeeb hai.

ajeeb lag raha hai.

7/10.

ajeeb hai.

ajeeb lag raha hai.

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