Free NEET Chemistry Questions and Answers

Question 1

The chloramine-T is.

Accepted Answer

disinfectant

Answer

Chloramine-T is an organic compound that releases chlorine, making it a potent oxidizing agent. It is widely used as a disinfectant and antiseptic due to its effectiveness against bacteria, viruses, and fungi. Its applications range from medical and dental settings to water purification.

Question 2

Benzalkonium chloride is an

Accepted Answer

cationic surfactant and antiseptic

Answer

Benzalkonium chloride is a quaternary ammonium compound characterized by its cationic surfactant properties. As a surfactant, it disrupts cell membranes, which makes it highly effective as an antiseptic and disinfectant. It is commonly found in various consumer products, including hand sanitizers, wound disinfectants, and eye drops.

Question 3

Interferon is connected to

Accepted Answer

virus

Answer

Interferons are a group of signaling proteins produced and released by host cells in response to the presence of pathogens, most notably viruses. They play a crucial role in the innate immune system by interfering with viral replication and activating other immune cells. This makes them a key component of the body's defense against viral infections.

Question 4

Ibuprofen has

Accepted Answer

the racemic mixture of both R and S enantiomer

Answer

Ibuprofen is a chiral drug, meaning it exists as two enantiomers: R-ibuprofen and S-ibuprofen. While S-ibuprofen is primarily responsible for its anti-inflammatory and analgesic effects, commercial ibuprofen is typically sold as a racemic mixture containing equal amounts of both R and S enantiomers. The R-enantiomer can be converted to the active S-enantiomer within the body.

Question 5

Which one of the following substances is a hypnotic?

Accepted Answer

luminal

Answer

Luminal is a brand name for phenobarbital, which belongs to the class of barbiturates. Barbiturates are central nervous system depressants that produce effects ranging from mild sedation to general anesthesia. They are commonly used as hypnotics (sleep-inducing drugs) and anticonvulsants due to their ability to slow brain activity.

NEET - National Eligibility cum Entrance Test Practice Test

NEET - National Eligibility cum Entrance Test Practice Test

Free NEET Chemistry Questions and Answers