Punjab 12th Class Biology and Human Welfare Mcqs Test Online Punjab 12th Class Biology and Human Welfare Mcqs Test Online 123456789101112131415Show paginator Hide paginator Question 1 of 15Biology 1. Polio virus lives in the _________ of man. 1.Throat and intestine 2.Mouth and throat 3.Stomach and intestine 4.Mouth and intestine Question 1 of 15Question 2 of 15 2. Hybridization in plants is the technique of introducing desirable species into a hybrid by means of: 1.Pollination 2.Selection 3.Micro propagation 4.Emasculation Question 2 of 15Question 3 of 15 3. Which of the following is fermentation process? 1.Both a and b 2.None of these 3.Batch process 4.Continuous process Question 3 of 15Question 4 of 15 4. Measles is an infectious viral disease that occurs most often in: 1.Late winter and spring 2.Winter and rainy days3.Late winter and summer 4.Late winter and autumn Question 4 of 15Question 5 of 15 5. The best way to prevent a tetanus is: 1.Antibiotic 2.Cleanses 3.Medication 4.Vaccination Question 5 of 15Question 6 of 15 6. Biogas is 1.Ecofriendly and pollution free source 2.Propane rich fuel 3.Both a and c4.Methane rich fuel Question 6 of 15Question 7 of 15 7. The artificial active immunity is achieved by injecting small amount of antigen called: 1.Antibodies 2.Vaccine 3.Serum 4.Toxin Question 7 of 15Question 8 of 15 8. Who showed that Saccharomyces cerevisiae causes fermentation forming products such as beer and butter milk? 1.Louis Pasteur 2.Alexander Fleming 3.Schatz 4.Selman Waksman Question 8 of 15Question 9 of 15 9. Rennet is used in 1.Cheese making 2.Bread making 3.Fermentation 4.Antibiotics synthesis Question 9 of 15Question 10 of 15 10. The discovery that led to the development of first antibiotic was made by 1.Pauling 2.Jenner 3.Pasteur 4.Fleming Question 10 of 15Question 11 of 15 11. High value of BOD (Biochemical Oxygen Demand) shows 1.None of these 2.Water is highly polluted 3.Water is less polluted 4.Water is normal Question 11 of 15Question 12 of 15 12. Tissue plasminogen activator is 1.A vitamin 2.Amino acid 3.A chemical that stimulates tissue differentiation 4.An Enzyme Question 12 of 15Question 13 of 15 13. A bioreactor is 1.Culture for synthesis of new chemicals 2.Fermentation tank 3.Culture containing radioactive isotopes 4.Hybridoma Question 13 of 15Question 14 of 15 14. Which of the following is/are the method of crop improvement? 1.Hybridization 2.Polyploidy breeding 3.Selection 4.All of these Question 14 of 15Question 15 of 15 15. Spirulina is a: 1.Bio pesticide 2.Bio fertilizer 3.Edible fungus 4.Single cell protein Question 15 of 15 Loading... Test By Subject Punjab Test By Topics 12th Class Biology You Can Learn and Gain more Knowledge through our Online Quiz and Testing system Just Search your desired Preparation subject at Gotest.