Name the drugs which block the sensory nerves and prevent the patient from feeling pain.

Inside which organ is the gall bladder located?

Name the animal which can do without water in its entire life.

Who first discovered how blood circulates in the human body?

Through which organ does a fish respire?

Which lenses are used by people having short-sightedness?

Name the drugs that calm the nervous system and prevent worry, tension, etc.

What type of machine was ENIAC, built in 1946?

Name the surgeon who pioneered the antiseptic surgical technique in 1865.