microorganisms friend and foe class 8 mcq

17 Single lens microscope magnifies ........ times 1. 3 2. 300 3. 3000 4. 30

16 Microbiology as a science born in 1. 1674 2. 1686 3. 1574 4. 1474

15 We should clean our hands with soap before eating because 1. washing is our body 2. washing makes our hands hygenic 3. washing makes our hands perfume 4. we eat more food

14 Disease causing microbes spread through 1. air 2. water 3. vectors 4. above all

13 Protozoans can be observed in 1. pond water 2. hay decoction 3. bread 4. potato

12 Lactobacillus can be seen in 1. water 2. rotten vegetable 3. buttermilk 4. bread

11 For the observation of fungi, we use this 1. rotten bread 2. pond water 3. grape juice 4. buttermilk

10 This chemical is used in bacterial staining 1. methyle blue 2. iwethyl orange 3. janus green 4. crystal violet

09 This will happen if butter milk is added to luke warm milk 1. milk would be spoiled 2. curd would be formed in 2 or 3 hours 3. curd would be formed in a long time 4. curd would not be formed

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microorganisms friend and foe class 8 mcq

18 Animalcules are 1. bacteria 2. fungi 3. algae 4. all of these

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17 Single lens microscope magnifies ........ times 1. 3 2. 300 3. 3000 4. 30

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16 Microbiology as a science born in 1. 1674 2. 1686 3. 1574 4. 1474

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15 We should clean our hands with soap before eating because 1. washing is our body 2. washing makes our hands hygenic 3. washing makes our hands perfume 4. we eat more food

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14 Disease causing microbes spread through 1. air 2. water 3. vectors 4. above all

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13 Protozoans can be observed in 1. pond water 2. hay decoction 3. bread 4. potato

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12 Lactobacillus can be seen in 1. water 2. rotten vegetable 3. buttermilk 4. bread

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11 For the observation of fungi, we use this 1. rotten bread 2. pond water 3. grape juice 4. buttermilk

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10 This chemical is used in bacterial staining 1. methyle blue 2. iwethyl orange 3. janus green 4. crystal violet

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09 This will happen if butter milk is added to luke warm milk 1. milk would be spoiled 2. curd would be formed in 2 or 3 hours 3. curd would be formed in a long time 4. curd would not be formed

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