The unit of Boiling point Elevation Constant (\(K_b\)) is

Salicylaldehyde is formed as a main product from phenol by :

The major product formed when acetanilide undergoes bromination in presence of acetic acid is:

The reagent involved in the Clemmensen reduction of carbonyl compound is

In alcohols, carbon and oxygen atom are

Collision frequency is :

Fehling solution gives red precipitate with.....

A solenoid with 100 turns per metre carries a current of 1.2 A. The magnetic intensity inside the solenoid is :

Read the passage carefully and answer the questions
Replacement of a hydrogen atom in a hydrocarbon by an alkoxy or carboxyl group yields a class of compounds known as ethers. Ethers are classified as symmetrical or unsymmetrical on the basis of groups attached to the oxygen atoms. Diethyl ether, a symmetrical ether, has been widely used as an inhalation anesthetic. Ethers can be prepared by acid catalyzed intermolecular dehydration of alcohols and Williamson's synthesis. Acid catalyzed dehydration of alcohols is not generally preferred as it gives a mixture of elimination and substitution products. In Williamson's synthesis, an alkyl halide is allowed to react with sodium alkoxide. Ethers containing substituted Alkyl groups may also be prepared by this method. The C-O bond in ether is weakly polar and is cleaved under drastic conditions with excess of hydrogen halides. In electrophilic substitution, the alkoxy group deactivates the aromatic ring and directs the incoming group to ortho and para positions.
Which type of ether is anisole ?

The seminal plasma is rich in:
(A) Fructose
(B) Amino acids
(C) Calcium
(D) Certain enzymes
Choose the correct answer from the options given below:

Let \(f:[-2,2] \rightarrow[-2,2]\) be a function defined by \(f(x)=x|x|\), then \(f\) is:

Read the passage carefully and answer the given questions.
Recombinant DNA Technology
Asexual reproduction preserves the genetic information, while sexual reproduction permits variation. Traditional hybridization procedures used in plants and animals breeding very often lead to inclusion and multiplication of undesirable genes along with the desired genes. The techniques of genetic engineering, which include creation of recombinant DNA, use of gene cloning and gene transfer, overcome this limitation and allow us to isolate and introduce only one or a set of desirable genes without introducing genes into the target organism.
Which one of the following options is correct for working of restriction enzymes?

A cell of emf 2.2 V gives a current of 0.2 A through a resistance of 9 \(\Omega\). The internal resistance of the cell will be: