Science (English Medium) Class 12 - CBSE Question Bank Solutions for Chemistry

The compound that causes general antidepressant action on the central nervous system belongs to the class of ______.

Equanil is ______.

Which of the following statements are correct about barbiturates?

(i) Hypnotics or sleep producing agents.

(ii) These are tranquilizers.

(iii) Non-narcotic analgesics.

(iv) Pain reducing without disturbing the nervous system.

Veronal and luminal are derivatives of barbituric acid which are:

(i) Tranquilizers

(ii) Non-narcotic analgesic

(iii) Antiallergic drugs

(iv) Neurologically active drugs

Write the uses of medicines.

Which class of drugs is used in sleeping pills?

What are analgesics?

Which analgesics are called opiates?

What is the medicinal use of narcotic drugs?

With the help of an example explain how do tranquilizers control the feeling of depression?

Account for the following:

N-ethylethanamine boils at 329.3 K and butanamine boils at 350.8 K, although both are isomeric in nature.

What happens when reactions:

N-ethylethanamine reacts with benzenesulphonyl chloride.

What happens when D-glucose is treated with the following reagent?

HI

Explain the following phenomena with the help of Henry’s law.

Feeling of weakness and discomfort in breathing at high altitude.

Account for the following:

There are 5 OH groups in glucose

Account for the following:

What happens when D – glucose is treated with the following reagents

Bromine water

Account for the following:

What happens when D – glucose is treated with the following reagents

HNO₃

State Henry’s law and explain why are the tanks used by scuba divers filled with air diluted with helium (11.7% helium, 56.2% nitrogen and 32.1% oxygen)?

Assume that argon exerts a partial pressure of 6 bar. Calculate the solubility of argon gas in water. (Given Henry’s law constant for argon dissolved in water, K_H = 40 k bar)

Arrange the following in the increasing order of their property indicated:

Ethanal, Propanone, Propanal, Butanone (reactivity towards nucleophilic addition)