Chemistry Test ...

Given below are two statements :

Statement I: A unit formed by the attachment of a base to 1′ position of sugar is known as nucleoside

Statement II: When nucleoside is linked to phosphorous acid at 5′-position of sugar moiety, we get nucleotide.

In the light of the above statements, choose the correct answer from the options given below:

Identify the incorrect statement.

Assertion (A) −NH₂ group of aniline is ortho, para directing in electrophilic substitutions.

Reason (R) −NH₂ group stabilises the arenium ion formed by the ortho, para attack of the electrophile.

The correct answer is

The pair that contains two P-H bonds in each of the oxoacids is:

Which of the following compounds has the highest boiling point?

Two compounds I and II are eluted by column chromatography (adsorption of I > II). Which of the following is a correct statement?

Which of the following compounds will yield a significant amount of meta substituted product during the mono-nitration reaction?

In the analysis of an organic compound, it was found that it contains 7 carbon atoms, there are two C = C bonds and one C ≡ C bond. This compound is a hydrocarbon.

Hydrocarbons have only carbon and hydrogen elements. On structural analysis it was found that it is covalent in nature and expected structure is given above. The ratio between the pure and hybrid orbitals is?

Which reagent can be used to convert ethanol to diethyl ether?

The standard electrode potentials of Zn, Cu, and Ag are as follows:

Give the order of reducing power.