Messages posted by krish1092

take AP as 1,2,3,4,............... and susbstitute. lolz

Since the circle is circumscribing the rectangle,the vertices of the rectangle lie on the circle.

We can consider the general eqn of circle and sub the given vertices ,Also the centre lies

on the given line.Sub the centre (-g,-f).Now solve for g and f.After g and f are found,we can

take the centre as the midpoint and and find the diametrically opposite ends of the given

vertices.By this we can get the remaining 2 vertices,Now,its easy to find area !

Conversion of cyclohexene to cyclohexanol can be conveniently achieved by
a)NaOH-H₂O
b)Br₂-H₂O
c)Hydroboration oxidation
d)Hydroboration hydrolysis

Find the area bounded by the curves x²+y²=4, y=x²+x+1,
y=[sin²(x/4)+cos(x/4)] and the x-axis,where [.] denotes greatest integer function

Consider P,We know that cot(7pi/14) =cot(pi/2)=0 ==> P=0

If 'k' represents angle,then

cot(180-k)=-cotk

So,for S,cot(13pi/14)=-cot(pi/14)

Similarly,other terms can be changed and we get the sum to be zero,Therefore,S=0,P=0

Which of the following reagents can be used to distinguish chlorobenzene from chloro cyclohexane
a)AgNO₃/C₂H₅OH
b)Ag(NH₃)₂OH
c)Na fusion,HNO₃,AgNO₃
d)Br₂/CCl₄

@Ultimator,What do you mean by """" substances like alcohols with -OH group at the second position"""" in this case???

well,c) is correct for the first one,but pls explain it!!!

Colours in complexes are decided by the constituents of the coordination sphere, right? So why do K₄[Fe(CN)₆](colourless) and Cu₂[Fe(CN)₆](chocolate brown) differ in colour though coordination sphere is intact?

Please ignore this!

Re:Integration

If y(x)= then the value of dy/dx at x= is

$a)\pi \\ b)0 \\ c)2\pi \\ d)\pi/2$

Numbers are selected at random one at a time,from the numbers 00,01,02,...99 with replacement.An event E occurs if and only if the product of the two digits of a selected number is 18.If 4 numbers are selected ,then the probability that E occurs at least 3 times,is

a)97/390625

b)68/390625

c)72/390625

Conversion of cyclohexene to cyclohexanol can be conveniently achieved by
a)NaOH-H₂O
b)Br₂-H₂O
c)Hydroboration oxidation
d)Hydroboration hydrolysis

Find the area bounded by the curves x²+y²=4, y=x²+x+1,
y=[sin²(x/4)+cos(x/4)] and the x-axis,where [.] denotes greatest integer function