o-Nitrophenol is less soluble in water than p-nitrophenol because :

The correct statement regarding a carbonyl compound with hydrogen atom on its alpha carbon is :
A. A carbonyl compound with hydrogen atom on its a-carbon rapidly equilibrates with its corresponding enol and this process is known as carbonylation.
B. A carbonyl compound with hydrogen atom on its a-carbon rapidly equilibrates with its corresponding enol and this process is known as keto enol tautomerism.
C. A carbonyl compound with hydrogen atom on its a-carbon never equilibrates with corresponding enol.
D. A carbonyl compound with hydrogen atom on its a-carbon rapidly equilibrates with its corresponding enol and this process is known as aldehyde-ketone equilibration.
Choose the correct answer from the options given below :

The half life for radioactive decay of C-14 is 5730 years.
A sample of tree had only 80% of C-14 left.
Estimate the age of the tree.
(log 5 = 0.698) (log 4 = 0.602)

A radioactive substance decays with a rate constant of 9.2 x 10^-3 min^-1 Time taken for \(75 \%\) of the sample to decompose is

The major product of Kolbe's reaction is used for the synthesis of a precursor substrate in the preparation of aspirin
The electrophile used in Kolbe's reaction is

Degree of dissociation, when molar conductivity of X at its concentration C is 24.14 and its limiting molar conductivity is 48.28 will be :

Read the passage carefully and answer the Questions:
Amines are classified as primary \(\left(1^{\circ}\right)\), secondary \(\left(2^{\circ}\right)\) and tertiary \(\left(3^{\circ}\right)\) depending upon the number of hydrogen atoms replaced by alkyl or aryl groups in ammonia molecules. Aliphatic amines are a stronger bases due to \(+I\) effect of an alkyl groups. Intermolecular hydrogen bonding in primary and secondary amines affects the boiling points of amines. The intermolecular association is more in primary amines than in secondary amines as there are more number of hydrogen atoms available for hydrogen bond formation. Nitro compounds are reduced to amines by passing hydrogen gas in the presence of finely divided nickel, palladium or platinum and also by reduction with metals in an acidic medium. Gabriel synthesis is used for the preparation of primary amines. Primary amines react with nitrous acid to give unstable diazonium-salts which can be used to synthesize a variety of compounds.
Identify the amine possessing least basic strength:

The sum of the products of elements of any row with the cofactors of corresponding elements is equal to:

In 1997, the first transgenic cow, Rosie, produced human protein-enriched milk. The milk contained the _________ and was nutritionally a more balanced product for human babies than natural cow-milk.

A bag contains 4 red and 6 black balls. Two balls are drawn in succession without replacement. The probability that the first is red and the second is black is

Relation \(R\) on the set \(A=\{1,2,\)...,\(15\}\) defined as \(R=\{(x, y): y-4 x=0\}\) is

The relation \(R\) on set \(A=\{1,2,3,4,5\}\), given by \(R=\{(a, b):|a-b|\) is even \(\}\) is :

The general solution of the differential equation \((1+y) d x-2 x d y=0\) is :