1. Fill in the blanks 

(i) Cleanliness, rest and sleep, and physical exercise are a part of _________ hygiene 

(ii) One must always breathe by the ___________ and never by the ____________.

(iii) Fresh air brings __________ into the living rooms.

 (iv) One must never put a sharp-pointed object into the _____________ it may rupture the. 

(v) For adults 6-7 hours of continuous undisturbed ___________ is sufficient. 

(vi) The municipal bodies must ensure the supply of clean germ-free ____________ and an efficient ______________ disposal. 

Solution 

(i) Personal 

(ii) Nose, mouth 

(iii) Oxygen 

(iv) Ear, eardrum 

(v) Sleep 

(vi) Drinking water, sewage 

2. List any three advantages of a daily bath. 

Solution  :The three advantages are as follows: 

(i) It keeps the skin clean and germ-free.

(ii) Eliminates body odours given out by perspiration.

(iil) Keeps the sweat pores open.

(iv) To keep the body warm.

4. Mention if the following statements are true (T) or false (F) 

(i) Contamination means entry of germs by insect bite T/F 

(ii) Sewage is the commonest source of contamination of water in the cities T/F 

(iii) Cholera is marked by acute diarrhea and no urination T/F 

(iv) Typhoid is caused by a type of worm T/F (v) Mosquitoes are the source of dysentery germs T/F 

Solution 

(i) False. Contamination means the entry of germs into drinking water or edible foods. 

(ii) True. 

(iii) True. 

(iv) False. Typhoid is caused by a bacteria 

(v) False. Dysentery can be caused by bacteria or protozoans. 

A. Multiple Choice Type 

1. No urination due to shortage of water in the body is a typical symptom of 

(a) Typhoid 

(b) Malaria 

(c) Dysentery 

(d) Cholera 

Solution 

(d)Cholera 

It is because urea accumulates in the blood, which is highly poisonous and fatal. 

2. Which one of the following is an unhealthy habit? 

(a) Removing wax from inside the ears 

(b) Keeping the mouth closed while breathing (c) Sleeping for only 6-7hours 

(d) Sharing towels with others 

Solution 

(d)Sharing towels with others Trachoma and conjunctivitis are two common eye diseases caused by sharing towels and others. 

3. The protozoan that causes malaria is: 

(a) Entamoeba histolytica 

(b) Euglena 

(c) Paramecium 

(d) Plasmodium 

Solution 

(d)Plasmodium Malaria is caused by the protozoan Plasmodium 

4. The chemical substance mainly responsible for tooth disorder is 

(a) Calcium 

(b) Chloride 

(c) Fluorides 

(d) lodides 

Solution:

(c) Fluorides Presence of fluorides in drinking water causes tooth disorders. 

5. Typhoid is caused by 

(a) Housefly 

(b) Bacteria 

(c) Virus 

(d) None of the above 

Solution 

(b) Bacteria Typhoid is caused by Salmonella typhi, a bacterium. 

6. The germ causing Hepatitis is transmitted through: 

(a) The bite of a mosquito 

(b) Contamination of food by a housefly 

(c) Personal contact with a patient 

(d) Contaminated water 

Solution 

(d) Contaminated water 

Hepatitis A is infectious hepatitis transmitted through contaminated water. 

B. Very Short Answer Type 

1. Match Column I with that which is most appropriate in Column II. 

Solution