Multiple choice questions XXXXIX — task. Science CBSE, Class 9.

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எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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1. Cholera is an infectious, fatal disease caused by the bacterium which lives and multiplies in the small intestine. The disease sometimes occurs in epidemic form. Which of the following is not a reason for the spread of the disease?

Drinking the contaminated water
Consuming the contaminated food
Breeding of the flies on the garbage heaps
Use of spices in food

2. For the prevention of the dehydration, the patient is advised to take Oral Rehydration Solution (ORS). The main components of ORS solution are:

Sodium chloride, sodium bicarbonate, potassium chloride, glucose,sucrose and water
Sodium chloride, sodium bicarbonate, potassium chloride, glucose, sucrose and water
Sodium chloride, sodium carbonate, potassium chloride, glucose,sucrose and water
Sodium carbonate, sodium bicarbonate, potassium chloride, glucose,sucrose and water

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