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Chemistry
List of top Chemistry Questions
59 g of an amide obtained from a carboxylic acid, RCOOH, upon heating with alkali liberated 17 g of ammonia. The acid is
Chemistry
Organic Chemistry - Some Basic Principles and Techniques
A compound with molecular formula
$C_4H_4O$
has all the four carbon atoms and the oxygen atom inthe ring. It also has two double bonds. The compound is
Chemistry
Organic Chemistry - Some Basic Principles and Techniques
A gas is found to have the formula (CO)
$^n$
. If its vapour density is 56, the value of n will be
Chemistry
Organic Chemistry - Some Basic Principles and Techniques
A mixture of acetone (b.p. 56
$^\circ$
) and methanol (b.p. 65
$^\circ$
) can be separated by
Chemistry
Organic Chemistry - Some Basic Principles and Techniques
A mixture of benzoic acid and naphthalene can be separated by crystallization from
Chemistry
Organic Chemistry - Some Basic Principles and Techniques
A mixture of two immiscible liquids may be easily separated by using a
Chemistry
Organic Chemistry - Some Basic Principles and Techniques
An example of alicyclic compound is
Chemistry
Organic Chemistry - Some Basic Principles and Techniques
An organic compound contains
$69\%$
carbon and
$4.8\%$
hydrogen, the remainder being oxygen. What will be the masses of carbon dioxide and water produced when
$0.20 \,g$
of this substance is subjected to complete combustion.
Chemistry
Organic Chemistry - Some Basic Principles and Techniques
Aniline is insoluble in water and processes low vapour pressure. It can be purified by
Chemistry
Organic Chemistry - Some Basic Principles and Techniques
Aniline is usually purified by
Chemistry
Organic Chemistry - Some Basic Principles and Techniques
Arrange the following alkyl bromides in decreasing order of rates of
$S_N2$
displacement reaction.
Chemistry
Organic Chemistry - Some Basic Principles and Techniques
In the case of polyfunctional compounds, the choice of principal functional group is made on the basis of order of preference. The order of decreasing priority for some functional groups is
Chemistry
Organic Chemistry - Some Basic Principles and Techniques
Nitroalkanes and alkyl nitrites exhibit functional isomerism. Compounds having same molecular formula but different functional groups are called functional isomers.
Chemistry
Organic Chemistry - Some Basic Principles and Techniques
Paper chromatography is a type of partition chromatography. Moving phase is liquid and stationary phase is solid.
Chemistry
Organic Chemistry - Some Basic Principles and Techniques
When inductive and electromeric effects operate in opposite directions, the inductive effect predominates. Inductive effect is the complete transfer of shared pair of
$\pi$
electrons to one of the atoms.
Chemistry
Organic Chemistry - Some Basic Principles and Techniques
Bond length of ethane (I), ethene (II), acetylene (III) and benzene (IV) follows the order
Chemistry
Organic Chemistry - Some Basic Principles and Techniques
Carbanion is iso-structural with
Chemistry
Organic Chemistry - Some Basic Principles and Techniques
Dehydration of ethyl alcohol proceeds via
Chemistry
Organic Chemistry - Some Basic Principles and Techniques
Distillation under reduced pressure is employed for
Chemistry
Organic Chemistry - Some Basic Principles and Techniques
Electronegativity of carbon atoms depends upon their state of hybridisation. In which of the following compounds, the carbon marked with asterisk is most electronegative?
Chemistry
Organic Chemistry - Some Basic Principles and Techniques
Electrophilic reagents are
Chemistry
Organic Chemistry - Some Basic Principles and Techniques
Heterolysis of carbon-chlorine bond produces
Chemistry
Organic Chemistry - Some Basic Principles and Techniques
Heterolytic fission of a covalent bond in organic molecules gives
Chemistry
Organic Chemistry - Some Basic Principles and Techniques
Hyperconjugation effect is also called
Chemistry
Organic Chemistry - Some Basic Principles and Techniques
In Carius method of estimation of halogen,
$0.15\, g$
of an organic compound gave
$0.12\, g$
of
$AgBr$
. What is the percentage of bromine in the compound?
Chemistry
Organic Chemistry - Some Basic Principles and Techniques
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