09 It has been observed that the process of digestion is faster inside the stomach than outside because1. the digestive juices when kept outside the stomach become inactive2. the food is churned in the stomach thereby increasing the surface area for quicker enzyme action3. the digestive juices inside the stomach are acidic, while outside they are alkaline4. the amount of digestive juices produced in the stomach in the presence of food is much more
10 Durga lives in a village and cooks food on a chulha (earthen stove) using wood or cow dung cakes as fuel. She has been suffering from severe cough for the last three months. This may be due to the1. smoke produced by burning fuels which may have caused her allergy2. old age and pollution inside and outside her hut3. carbon monoxide produced by burning fuel which may have been deposited in her respiratory tract4. soot produced by burning the fuels which may have been deposited in her respiratory tract
11 Vitamins are substances1. required in small quantities to prevent deficiency diseases2. that increase our metabolic rate leading to loss of weight3. required as medicines to make us healthy4. that build muscles to keep us strong
13 Which one of the following is a good cooking practice?1. washing the vegetables nicely and then cutting2. cutting the vegetables and then washing these in running water3. keeping the vegetables in sunshine for some time before cutting and cooking4. cooking the vegetables by deep frying to kill bacteria
14 Weightlifters are generally required to make more muscles and body mass. For this purpose, they need to take a diet which is rich in1. proteins2. carbohydrates3. fats4. vitamins
15 In which one of the following groups are the words intimately related?1. mosquito, malaria, anemia, iron2. iron, malaria, anemia, blood3. iron, hemoglobin, anemia, amla4. mosquito, dengue, iron, jaggery