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Q. Jonas Salk invented the vaccine for
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Q. Percentage of lead in lead pencils is
Q. The percentage of oxygen present in air is approximately
Q. Non stick cooking utensils are coated with
Q. If a healthy freshwater fish is placed in salt water, what will be the expected consequence
Q. What color does yellow and green make?
Q. Which of the following method will be employed to test the hardness of water
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