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class 12
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JEE Main
580
150
A liquid was mixed with ethanol and a drop of concentrated
$H_{2}SO_{4}$
was added. A compound with a fruity smell was formed. The liquid was:
580
150
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Related Questions
The conjugate of a complex number is
$i−11 $
. Then the complex number is
The speed of sound in oxygen
$(O_{2})$
at a certain temperature is
$460ms_{−1}$
. The speed of sound in helium (He) at the same temperature will be (assumed both gases to be ideal)
Statement 1: The variance of first n even natural numbers is
$4n_{2}−1 $
Statement 2: The sum of first n natural numbers is
$(n2n+1 $
and the sum of squares of first n natural numbers is
$(n(n+1)62n+1 $
A thin rod of length 'L' is lying along the x-axis with its ends at
$x=0andx=L$
. Its linear density (mass/length) varies with x as
$k(Lx )_{n}$
, where n can be zero or any positive number. If the position
$x_{CM}$
of the centre of mass of the rod is plotted against 'n', which of the following graph best approximates the dependence of
$x_{CM}$
on n ?
Let the line
$3x−2 =−5y−1 =2z+2 $
lie in the plane
$x+3yαz+β=0$
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equals
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$−4$
. Thena possible value of k is
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