which of the following is not five membered heterocyclic ring

• Thiphene

• Imidazole

• Furan

• Pyrimidine

Heterocyclic compound structure contain

• benzene ring

• cyclic ring

• cyclic ring with one heteroatom

• all of these

In furan heteroatom present is

• Sulphur

• Carbon

• Nitrogen

• Oxygen

What is the heteroatom present in pyrimidine?

• Sulphur

• Carbon

• Nitrogen

• Oxygen

In thiophene heteroatom present is

• Oxygen

• Sulphur

• Selenium

• Nitrogen

Prefix used for nitrogen in heterocyclic compound is

• Oxa

• Aza

• Oza

• Zole

number of heteroatom present in pyridazine are

• 1

• 2

• 3

• 4

Which of the following is structure of tetrahydrofuran

• 
• 
• 
• 

Which of the following is an example of six membered heterocycle

• Oxole

• Thiole

• Thiazine

• Azepine

Which of the following is an unsaturated heterocycle

• Thiazole

• Pyrimidine

• Benzimidazole

• All of these