Distinguish between Rickets and Smallpox on the basis of the characteristic symptoms.

Identify the disease with the help of the clues given below :

1. Highly swollen legs
2. Locked jaws due to painful contractions of the jaw and neck muscles
3. Vomiting and watery stools
4. Diarrhoea, stool mixed with mucus and blood
5. Chills, high temperature, profuse sweating.

Which of the following is a lung disease caused by bacteria ?

1. Rabies
2. Pneumonia
3. Malaria
4. Cholera

Write 'True' and 'False' against each of the following statements :

1. Malaria is an infectious disease.
2. Rickets is caused due to the deficiency of vitamin A.
3. Viruses carry germs from garbage and sewage.
4. Filarial germs are transmitted by the bite of female Culex mosquito.
5. Nightblindness is the disease in which people are not able to see at night even if light is available.