Recent questions tagged ch12

The number of sigma and pi-bonds in 1-butene -3-yne are

asked Feb 21, 2014 by meena.p

1 answer

The optically active tartaric acid named as $D-(+)-$ tartaric acid because it has a positive,

asked Feb 21, 2014 by meena.p

1 answer

Among the given compounds, the most susceptible to nucleophilic attack at the carbonyl group is

asked Feb 21, 2014 by meena.p

1 answer

The structure shows:

asked Feb 21, 2014 by meena.p

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The IUPAC name of $C_6H_5COCl$ is

asked Feb 21, 2014 by meena.p

1 answer

The IUPAC name of the following compound

asked Feb 21, 2014 by meena.p

1 answer

Statement - 1: Phenol is more reactive than benzene towards elecrophilic substitution reaction . Statement - 2: In the case of phenol, the intermediate carbocation is more resonance stabilized.

asked Feb 21, 2014 by meena.p

1 answer

Statement 1: Molecules that are not super imposable on their mirror images are chiral. Statement -2 : All chiral molecules have chiral centres.

asked Feb 21, 2014 by meena.p

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Statement - 1: Aryl halides undergo nucleophilic substitution with ease. Statement - 2: The carbon - halogen bond in aryl halides has partial double bond character.

asked Feb 21, 2014 by meena.p

1 answer

Most stable carbonium ion is

asked Feb 21, 2014 by meena.p

3 answers

Among the following compounds, the strongest acid is

asked Feb 21, 2014 by meena.p

1 answer

Which of the following acids has the smallest dissociation constant

asked Feb 21, 2014 by meena.p

1 answer

The number of stereoisomers obtained by bromiantion of trans-2-butene is

asked Feb 21, 2014 by meena.p

1 answer

Hyper conjugation involves overlap of the following orbitals

asked Feb 21, 2014 by meena.p

1 answer

Isomers which are mirror images are known as __

asked Feb 21, 2014 by meena.p

1 answer

An aromatic molecule will

asked Feb 21, 2014 by meena.p

1 answer

Identify the correct order of boiling points of the following compounds : $CH_3 CH_2 CH_2OH,CH_3CH_{\large 2_2}CH_2CHO , CH_3CH_{\large 2_3}CH_2COOH$

asked Feb 21, 2014 by meena.p

2 answers

Molecule in which the distance between the two adjacent carbon atoms is large is

asked Feb 20, 2014 by meena.p

1 answer

The IUPAC name of the compounds having the formula

asked Feb 20, 2014 by meena.p

1 answer

Which of the following compound will exhibit geometrical isomerism.

asked Feb 20, 2014 by meena.p

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Among the following, the compound that can be most readily sulphonated is

asked Feb 20, 2014 by meena.p

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Which of the following has the highest nucleophilicity

asked Feb 20, 2014 by meena.p

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Which of the following has the highest nucleophilicity

asked Feb 20, 2014 by meena.p

1 answer

Which of the following has the most acidic hydrogen

asked Feb 20, 2014 by meena.p

1 answer

In the given conformation, if $C_2$ is rotated $C_2 -C_3$ bond anticlockwise by an angle of $120^{\circ}$ then the conformation obtained is

asked Feb 20, 2014 by meena.p

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The $C-H$ bond distance is the longest in

asked Feb 20, 2014 by meena.p

1 answer

Isomers which can be inter converted through rotation around a single bond are :

asked Feb 20, 2014 by meena.p

1 answer

In $CH_3CH_2OH$ the bond that undergoes heterolytic cleavage most readily is

asked Feb 20, 2014 by meena.p

1 answer

An isomer of ethanol is

asked Feb 20, 2014 by meena.p

1 answer

The bond order of individual carbon-carbon bonds is benzene is :

asked Feb 20, 2014 by meena.p

1 answer

A firm has to transport 1200 packages using large vans which can carry 200 packages each and small vans which can take 80 packages each.The cost for engaging each large van is Rs 400 and each small van is Rs 200.Not more than Rs 3000 is to be spent on the job and the number of large vans cannot exceed the number of small vans.What will be the minimum cost?

asked Feb 1, 2014 by rvidyagovindarajan_1

1 answer

If $A,B,C$ are three points on $x\:axis,\:y\:axis\:and\:z\:axis$ respectively which are at the distances $a,b,c$ from origin respectively and $P$ is a point which is equidistant from $A,B,C,O$ then the coordinates of $P$ is?

asked Jan 21, 2014 by rvidyagovindarajan_1

1 answer

If $A(4,7,8),\:B(2,3,4),\:C(2,5,7)$ are vertices of a triangle then the length of internal bisector of angle $A$ is ?

asked Jan 12, 2014 by rvidyagovindarajan_1

1 answer

Find the angle between any two diagonals of a cube.

asked Jan 12, 2014 by rvidyagovindarajan_1

1 answer

The cosine of angle between the medians drawn from vertices of isosceles rt. angled triangle is?

asked Jan 12, 2014 by rvidyagovindarajan_1

1 answer

If from a point $P(a,b,c)$ perpendiculars $PA,\:PB,\:$ are drawn on $yz\:\:and\:\:zx$ planes. then the equation of the plane $OAB$ is ?

asked Jan 11, 2014 by rvidyagovindarajan_1

1 answer

If the vertices of a triangle are $A(1,4,2),\:B(-2,1,2)\:C(2,-3,4)$ then the angle $B$ = ?

asked Jan 11, 2014 by rvidyagovindarajan_1

1 answer

The projection of a line segment on $x,y,z$ axes are $12,\:4,\:3$ respectively, then the length of the line segment is ?

asked Jan 11, 2014 by rvidyagovindarajan_1

1 answer

The locus of a point $(x,y,z)$ for which $z=k$ is a ?

asked Jan 11, 2014 by rvidyagovindarajan_1

1 answer

The points $(5,0,2),\:(2,-6,0),\:(4,-9,6)\:and\:(7,-3,8)$ represent vertices of a ?

asked Jan 11, 2014 by rvidyagovindarajan_1

1 answer

A line segment of length $21$ has $d.r.=(2,-3,6)$ and makes obtuse angle with $x\:axis$, then the components of the line segment (vector) are?

asked Jan 10, 2014 by rvidyagovindarajan_1

1 answer

If $P(2,3,4)\;and\:Q(1,b,1)$ are two points and $O$ is origin such that $OP$ is $\perp$ to $OQ$, then $b=?$

asked Jan 10, 2014 by rvidyagovindarajan_1

1 answer

The point which divides the line joining the points $(2,4,5)\:\:and\:\:(3,5,-4)$ in the ratio $2:3$ externaly lies on the plane?

asked Jan 10, 2014 by rvidyagovindarajan_1

1 answer