Search For 中国 埃及 签证政策 2025

Predict the product X in the following reaction:

MCQ Question: "Predict the product X in the following reaction:"

The major product in hydoboration-oxidation of phenyl acetylene is:

MCQ Question: "The major product in hydoboration-oxidation of phenyl acetylene is: "

Which of the following species participates in the sulphonation of benzene?

MCQ Question: "Which of the following species participates in the sulphonation of benzene?"

The major product in Friedal-Craft reaction between benzene, isobutyl alcohol and phosphoric acid is:

MCQ Question: "The major product in Friedal-Craft reaction between benzene, isobutyl alcohol and phosphoric acid is:"

Which one of the following aryl amines undergoes diazotisation most readily?

MCQ Question: "Which one of the following aryl amines undergoes diazotisation most readily?"

Consider the following reactions

MCQ Question: "Consider the following reactions"

When adenine is attached to ribose sugar, it is called adenosine. To make a nucleotide from it, it would require

MCQ Question: " When adenine is attached to ribose sugar, it is called adenosine. To make a nucleotide from it, it would require "

The electrophilic aromatic substitution proceeds through a

MCQ Question: "The electrophilic aromatic substitution proceeds through a"

The coordinates for the atoms in a body centered cubic unit cell are

MCQ Question: "The coordinates for the atoms in a body centered cubic unit cell are"

The interplanar distance (Å) for a (100) plane in a cubic structure with the lattice parameter of 4Å is

MCQ Question: "The interplanar distance (Å) for a (100) plane in a cubic structure with the lattice parameter of 4Å is "