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Recent questions in Chemistry
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JEEMAIN and NEET
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Chemistry
Chemistry
Some Basic concepts in Chemistry
Atomic Structure
Classification of Elements and Periodicity in Properties
Chemical Bonding and Molecular Structure
Chemical Thermodynamics
Equilibrium
Redox Reactions
Hydrogen
s-Block Elements
p-Block Elements
P-Block elements (Group-13 and Group-14)
Hydrocarbons
Some Basic principles of Organic chemistry
Environmental Chemistry
States of Matter: Liquids and Gases
States of Matter: Solid State
Solutions
Electrochemistry
Surface Chemistry
General Principals and Processes of Isolation of Metals
p-Block elements (Group-15 to Group-18)
d-and-f-Block Elements
Co-ordination Compounds
Halogens
Oxygen: Alchohols, Phenols and Ethers
Nitrogen
Polymers
Biomolecules
Chemistry in everyday life
Practical Chemistry
Chemical Kinetics
Purification and Characterisation of Organic Compounds
Oxygen: Aldehydes, Ketones and Carboxylic Acids
Among the following molecules,the shortest bond length is to be found in
jeemain
chemistry
physical-chemistry
class11
unit4
chemical-bonding-and-molecular-structure
bond-parameters
q21
easy
asked
Mar 5, 2014
by
sreemathi.v
1
answer
The IUPAC name of
jeemain
chemistry
class11
organic-chemistry
q165
easy
basic-organic-chemistry
ch12
asked
Mar 4, 2014
by
meena.p
1
answer
Refer the below diagram : The IUPAC name of the compound is
jeemain
chemistry
class11
organic-chemistry
q164
medium
basic-organic-chemistry
ch12
asked
Mar 4, 2014
by
meena.p
1
answer
The correct name of below diagram is:
jeemain
chemistry
class11
organic-chemistry
q163
medium
basic-organic-chemistry
ch12
asked
Mar 4, 2014
by
meena.p
1
answer
An alkane with the formula $C_6H_{14}$ can be prepared by the hydrogenation of only two alkenes $(C_6 H_{12})$. IUPAC name of the alkane is :
jeemain
chemistry
class11
organic-chemistry
q162
medium
basic-organic-chemistry
ch12
asked
Mar 4, 2014
by
meena.p
1
answer
Which of the following does not show tautomerism ?
jeemain
chemistry
class11
organic-chemistry
q161
easy
basic-organic-chemistry
ch12
asked
Mar 4, 2014
by
meena.p
1
answer
The number of electron(s) in the $\sigma 2p$ molecular orbital in $N_2^{2+}$ is/are
jeemain
chemistry
physical-chemistry
class11
unit4
chemical-bonding-and-molecular-structure
molecular-orbital-theory
q20
easy
asked
Mar 4, 2014
by
sreemathi.v
1
answer
Which of the following classes of organic compounds show metamerism
jeemain
chemistry
class11
organic-chemistry
q160
medium
basic-organic-chemistry
ch12
asked
Mar 4, 2014
by
meena.p
1
answer
The hybridisation of $'Al'$ in $AlCl_4^-$ is
jeemain
chemistry
physical-chemistry
class11
unit4
chemical-bonding-and-molecular-structure
hybridization
q19
easy
asked
Mar 4, 2014
by
sreemathi.v
1
answer
Which of the following does not show geometrical isomerism ?
jeemain
chemistry
class11
organic-chemistry
q159
easy
basic-organic-chemistry
ch12
asked
Mar 4, 2014
by
meena.p
1
answer
Two elements $X$(atomic weight =$75$) and $Y$(atomic weight =16) combine to give a compound having $75.8 \%\; X$. The formula of the compound is
jeemain
chemistry
class11
organic-chemistry
q158
easy
basic-organic-chemistry
ch12
asked
Mar 4, 2014
by
meena.p
1
answer
$NH_3$ and $BF_3$ form an adduct readily because they form
jeemain
chemistry
physical-chemistry
class11
unit4
chemical-bonding-and-molecular-structure
valence-bond-theory
q18
easy
asked
Mar 4, 2014
by
sreemathi.v
1
answer
A is a lighter phenol and B is an aromatic carboxylic acid. separation of a mixture of A and B can be carried out easily by using a solution of
jeemain
chemistry
class11
organic-chemistry
q157
easy
basic-organic-chemistry
ch12
asked
Mar 4, 2014
by
meena.p
1
answer
The structure of $O_3$ and $N_3^-$ are
jeemain
chemistry
physical-chemistry
class11
unit4
chemical-bonding-and-molecular-structure
vsepr(valence-shell-electron-pair-repulsion)theory
q17
easy
asked
Mar 4, 2014
by
sreemathi.v
1
answer
How many stereo isomers does this molecule have $CH_3CH =CHCH_2CHBrCH_3$
jeemain
chemistry
class11
organic-chemistry
q156
medium
basic-organic-chemistry
ch12
asked
Mar 4, 2014
by
meena.p
1
answer
Among the following,the paramagnetic species is
jeemain
chemistry
physical-chemistry
class11
unit4
chemical-bonding-and-molecular-structure
valence-bond-theory
q16
easy
asked
Mar 4, 2014
by
sreemathi.v
1
answer
Which of the following is optically inactive
jeemain
chemistry
class11
organic-chemistry
q155
medium
basic-organic-chemistry
ch12
asked
Mar 4, 2014
by
meena.p
1
answer
In the following reaction the structure of the major product D is
jeemain
chemistry
unit13
class12
organic-chemistry
nitrogen
diazonium-salts
q65
difficult
asked
Mar 4, 2014
by
sreemathi.v
1
answer
An organic compound contains carbon, hydrogen and oxygen. Its elemental analysis gave $C,38.71 \%$ and $H,9.67 \%$ .The empitical formula of the compound would be
jeemain
chemistry
class11
organic-chemistry
q154
easy
basic-organic-chemistry
ch12
asked
Mar 4, 2014
by
meena.p
1
answer
The correct decreasing order of priority for the functional groups of organic compound in the IUPAC system of momenclature is
jeemain
chemistry
class11
organic-chemistry
q153
medium
basic-organic-chemistry
ch12
asked
Mar 4, 2014
by
meena.p
1
answer
Select the final product of the following sequence of reaction:
jeemain
chemistry
unit13
class12
organic-chemistry
nitrogen
diazonium-salts
q64
difficult
asked
Mar 4, 2014
by
sreemathi.v
1
answer
In Kjeldahl's method, nitrogen present is estimated as
jeemain
chemistry
class11
organic-chemistry
q152
medium
basic-organic-chemistry
ch12
asked
Mar 4, 2014
by
meena.p
1
answer
Identify the end product in the following sequence
jeemain
chemistry
unit13
class12
organic-chemistry
nitrogen
diazonium-salts
q63
difficult
asked
Mar 4, 2014
by
sreemathi.v
1
answer
The kind of delocalization involving sigma bond orbitals is called,
jeemain
chemistry
class11
organic-chemistry
q151
medium
basic-organic-chemistry
ch12
asked
Mar 4, 2014
by
meena.p
1
answer
Compounds containing which of the following functional groups can exhibit geometrical isomerism
jeemain
chemistry
class11
organic-chemistry
q150
medium
basic-organic-chemistry
ch12
asked
Mar 4, 2014
by
meena.p
1
answer
What could be the product for the following reaction?
jeemain
chemistry
unit13
class12
organic-chemistry
nitrogen
diazonium-salts
q62
difficult
asked
Mar 4, 2014
by
sreemathi.v
1
answer
Polarization of electrons in acrolein may be written,
jeemain
chemistry
class11
organic-chemistry
q149
medium
basic-organic-chemistry
ch12
asked
Mar 4, 2014
by
meena.p
1
answer
Select the final product of the following sequence of reaction
jeemain
chemistry
unit13
class12
organic-chemistry
nitrogen
diazonium-salts
q61
difficult
asked
Mar 4, 2014
by
sreemathi.v
1
answer
Which of the following compounds exhibits stereo isomerism
jeemain
chemistry
class11
organic-chemistry
q148
medium
basic-organic-chemistry
ch12
asked
Mar 4, 2014
by
meena.p
1
answer
What would be the major product in the following reaction
jeemain
chemistry
unit13
class12
organic-chemistry
nitrogen
diazonium-salts
q60
medium
asked
Mar 4, 2014
by
sreemathi.v
1
answer
What would be the major product of the following reaction
jeemain
chemistry
unit13
class12
organic-chemistry
nitrogen
diazonium-salts
q59
medium
asked
Mar 4, 2014
by
sreemathi.v
1
answer
In the below reaction X and Y are respectively
jeemain
chemistry
unit13
class12
organic-chemistry
nitrogen
diazonium-salts
q58
medium
asked
Mar 4, 2014
by
sreemathi.v
1
answer
Which of the following reaction is correctly formulated?
jeemain
chemistry
unit13
class12
organic-chemistry
nitrogen
diazonium-salts
q57
medium
asked
Mar 4, 2014
by
sreemathi.v
1
answer
How many structural (including stereoisomers ) isomers could be obtained by replacing one hydrogen of propene with chlorine ?
jeemain
chemistry
class11
organic-chemistry
q147
medium
basic-organic-chemistry
ch12
asked
Mar 4, 2014
by
meena.p
1
answer
Which of the following statement is correct?
jeemain
chemistry
unit13
class12
organic-chemistry
nitrogen
diazonium-salts
q56
medium
asked
Mar 4, 2014
by
sreemathi.v
1
answer
Which of the following will not give coloured dye with benzene diazonium chloride?
jeemain
chemistry
unit13
class12
organic-chemistry
nitrogen
diazonium-salts
q55
easy
asked
Mar 4, 2014
by
sreemathi.v
1
answer
How many chiral carbon atoms are present in $2,3,4$ trichloropentane ?
jeemain
chemistry
class11
organic-chemistry
q146
medium
basic-organic-chemistry
ch12
asked
Mar 4, 2014
by
meena.p
1
answer
The number of optical isomers formed hydrogenation of the compound, $(CH_3)_2C = CHCH_3$ are :
jeemain
chemistry
class11
organic-chemistry
q145
medium
basic-organic-chemistry
ch12
asked
Mar 4, 2014
by
meena.p
1
answer
What would be the major product of the following reaction
jeemain
chemistry
unit13
class12
organic-chemistry
nitrogen
diazonium-salts
q54
easy
asked
Mar 4, 2014
by
sreemathi.v
1
answer
Diazo compounds,sometimes donot respond Lassaigne's test for nitrogen because
jeemain
chemistry
unit13
class12
organic-chemistry
nitrogen
diazonium-salts
q53
easy
mock
asked
Mar 4, 2014
by
sreemathi.v
1
answer
Identify Z in the following sequence of reactions
jeemain
chemistry
unit13
class12
organic-chemistry
nitrogen
diazonium-salts
q52
easy
asked
Mar 4, 2014
by
sreemathi.v
1
answer
Identify the end product in the following sequence
jeemain
chemistry
unit13
class12
organic-chemistry
nitrogen
diazonium-salts
q51
easy
asked
Mar 4, 2014
by
sreemathi.v
1
answer
In the below reaction the product is
jeemain
chemistry
unit13
class12
organic-chemistry
nitrogen
amines
q50
difficult
asked
Mar 4, 2014
by
sreemathi.v
1
answer
What would be the major product in the following reaction
jeemain
chemistry
unit13
class12
organic-chemistry
nitrogen
amines
q49
difficult
asked
Mar 3, 2014
by
sreemathi.v
1
answer
The structure of $H_2C = C = CH_2$ is /has
jeemain
chemistry
class11
organic-chemistry
q144
medium
basic-organic-chemistry
ch12
asked
Mar 3, 2014
by
meena.p
1
answer
Absolute alcohol is prepared by
jeemain
chemistry
class11
organic-chemistry
q143
medium
basic-organic-chemistry
ch12
asked
Mar 3, 2014
by
meena.p
1
answer
Which of the following orders regarding the basic strength of substituted aniline is correct
jeemain
chemistry
unit13
class12
organic-chemistry
nitrogen
amines
q48
difficult
asked
Mar 3, 2014
by
sreemathi.v
1
answer
An organic molecule necessarily shows optical activity if it
jeemain
chemistry
class11
organic-chemistry
q142
medium
basic-organic-chemistry
ch12
asked
Mar 3, 2014
by
meena.p
1
answer
Arrange the compounds shown below in order of decreasing basicity (most basic first)
jeemain
chemistry
unit13
class12
organic-chemistry
nitrogen
amines
q47
difficult
asked
Mar 3, 2014
by
sreemathi.v
1
answer
Which of the following compounds will exhibit geometrical isomerism ?
jeemain
chemistry
class11
organic-chemistry
q141
medium
basic-organic-chemistry
ch12
asked
Mar 3, 2014
by
meena.p
1
answer
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