Which bacterium causes peptic ulcers? Who discovered the above pathogen for the first time?

Fill in the blanks:
$(a)$ . . . . . . disease continues for many days and causes . . . . . . on the body.
$(b)$ . . . . . . disease continues for a few days and causes no long-term effect on the body.
$(c)$ . . . . . . is defined as physical,mental,and social well-being and comfort.
$(d)$ Common cold is a/an . . . . . . disease.
$(e)$ Many skin diseases are caused by . . . . . . .

Priya's mother uses iodised salt at home. One day while cooking,Priya asked her mother about iodised salt. She said people who do not use iodised salt suffer from deficiency of iodine which leads to goitre and hypothyroidism.
$(a)$ What are the physical symptoms of goitre and hypothyroidism?
$(b)$ How will you inform others about the importance of iodised salt?
$(c)$ Is iodine a metal or a non-metal?
$(d)$ What are the physical properties of iodine?
$(e)$ What is the difference between iodised salt and normal salt?

Which one of the following causes kala-azar?

Classify the following diseases into communicable and non-communicable diseases:
$(a)$ Cancer
$(b)$ High blood pressure
$(c)$ Common cold
$(d)$ Diabetes
$(e)$ Tuberculosis
$(f)$ Night blindness
$(g)$ $SARS$
$(h)$ Typhoid
$(i)$ Cholera
$(j)$ Dengue

Akhilesh is having a headache and fever. He takes some pills to reduce the fever and headache before going to the doctor. What is this type of treatment called? How can we reduce the effects of the disease? What is the limitation of this type of treatment? What is the possible remedy for these diseases?