Organic Chemist...

Directions: The following question has four choices out of which ONLY ONE is correct.

An organic compound having molecular mass 60 g is found to contain C = 20%, H = 6.67% and N = 46.67% while the rest is oxygen. On heating, it gives NH₃ along with a solid residue. The solid residue gives violet colour with alkaline copper sulphate solution. The compound is

2-bromo butane can be represented in various ways. Choose the incorrect one from the following

In π (pi) bond formation, one of the below criteria is necessary. Choose the appropriate one.

Directions: The following question has four choices out of which ONLY ONE is correct.

An isopropyl group has molecular formula C₃H₇ ^–. In their structure, two methyl groups are attached to a carbon containing one hydrogen atom and this group is attached to carbon chain.
Which of the following organic compounds belongs to this category?

Change in hybridisation affects the carbon’s and the organic compound’s

Delocalisation of σ-electrons of C -H bond of an alkyl group directly attached to an atom of unsaturated system or to an atom with an unshared p-orbital is called :

Which of the following statements about resonance is not true?

Hybridisation in methane (CH4), ethene (C2H4), ethyne (C2H2) involves s and p orbitals. Choose the correct hybrid orbitals in the options given below for CH₄, C₂H₄ and, C₂H₂ respectively

Which of the following is not an aromatic compound?

Identify the main source(s) of organic compounds.

The process of differential extraction is based on

Which of the following singlet carbenes is the most stable?

Orbital interaction between -bonds of a substituent group and a neighbouring  orbital is known as

The minimum number of carbon atoms necessary for a hydrocarbon to form a branched structure is

The correct order of bond energies of the following bonds is

(I) C(sp³) - C(sp³), (II) C(sp²) - C(sp²), (III) C(sp) - C(sp)

When phenol is treated with CHCl₃ and NaOH, the product formed is 

Directions: The following question has four choices out of which ONLY ONE is correct.

What is the product obtained when chlorine reacts with ethyl alcohol in the presence of NaOH?

In which of the following states is carbon most electronegative?

The shifting of electrons of a multiple bond under the influence of a reagent is called

Directions: The following question has four choices out of which ONLY ONE is correct.

The ammonia evolved from the treatment of 0.30 g of an organic compound for the estimation of nitrogen was passed through 100 ml of 0.1 M sulphuric acid. The excess of acid required 20 ml of 0.5 M sodium hydroxide solution for complete neutralization. The organic compound is

Condense the following complete structural formula given below. Choose the appropriate answer given below

The IUPAC name for

What is the molecular formula of naphthalene?

Which of the following is the correct IUPAC name?

Which of the following species does not have an sp² hybridised carbon atom?

Ethylene oxide, when treated with Grignard reagent, yields

Write the state of hybridisation of carbon in H2C=O and mention the molecular geometry also.

The compounds C₂H₅OC₂H₅ and CH₃OCH₂CH₂CH₃ are

Which of the following methods is used for the separation of two immiscible liquids?

In general, in the molecules containing multiple bonds,_____ provide the most reactive centres. Choose the most appropriate one.