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Fill in the blank by choosing the appropriate word/words : Alexandar Flemming ---- penicillin.

Fill in the blank by choosing the appropriate word/words : Alexandar Flemming ---- penicillin. Correct Answer Invented

পৃথিবীতে অস্তিত্ব ছিল না এমন কিছু আবিষ্কার করাকে invent বলে। পৃথিবীতে অস্তিত্ব ছিল কিন্তু অজ্ঞাত ছিল এমন কিছু খুঁজে পাওয়াকে discover বলে। তাই এখানে (গ) – ই correct answer.

Related Questions

Select the correct one. a) Tuberculosis i) Louis Pasteur b) Antiseptic ii) Robert Koch c) Penicillin iii) Joseph Lister d) Anthrax iv) Alexandar Flemming
Students in a college have to choose at least two subjects from chemistry, mathematics and physics. The number of students choosing all three subjects is 18, choosing mathematics as one of their subjects is 23 and choosing physics as one of their subjects is 25. The smallest possible number of students who could choose chemistry as one of their subjects is
Three pipes x, y and z can fill a tank A can fill it in 4 minutes. Two pipes p and q are connected to tank B. how much time does it take for both tanks to run at the full capacity? Ratio of time taken to fill tank A by P and time taken by x to fill tank A is 2: 1 and ratio of time taken by Q to fill tank B and Z to fill tank A is 5: 3. Pipe P is 20% more efficient then pipe Q. and pipe Y takes 12 minutes to fill the tank. Capacity of tank B is 3/4 times of tank A. Note: Tank B is to be filled only after filling tank A. Valves of pipe p and q are closed once tank B is running at full capacity.
In the following question, two statements are numbered as A and B. On solving these statements, we get quantities A and B respectively. Solve both quantities and choose the correct option. Quantity A: Pipe A takes thrice the time taken by Pipe B to fill a tank. Together they can fill the tank in 15 hours, tank A and B is opened together for 4 hours and then Pipe A is closed and after 2 more hours Pipe B is closed and an outlet Pipe C is opened which when working alone can empty the tank in 10 hours. Calculate the time taken by C to empty the tank. Quantity B: A pipe A can fill the tank in 10 hours another pipe B can fill the tank in 15 hours and with the help of third pipe C they can fill the tank in 5 hours. Pipe A is opened for 4 hours then it is closed, pipe B is closed 3 hours before filling of tank and tank C is opened the whole time. Calculate the time taken to fill the tank
In the following question, two statements are numbered as A and B. On solving these statements, we get quantities A and B respectively. Solve both quantities and choose the correct option. Quantity A: Pipe A takes thrice the time taken by Pipe B to fill a tank. Together they can fill the tank in 15 hours, tank A and B is opened together for 4 hours and then Pipe A is closed and after 2 more hours Pipe B is closed and an outlet Pipe C is opened which when working alone can empty the tank in 10 hours. Calculate the time taken by C to empty the tank. Quantity B: A pipe A can fill the tank in 10 hours another pipe B can fill the tank in 15 hours and with the help of third pipe C they can fill the tank in 5 hours. Pipe A is opened for 4 hours then it is closed, pipe B is closed 3 hours before filling of tank and tank C is opened the whole time. Calculate the time taken to fill the tank.
For submitting tax returns, all resident males with annual income below Rs 10 lakh should fill up Form P and all resident females with income below Rs 8 lakh should fill up Form Q. All people with incomes above Rs 10 lakh should fill up Form R, except non residents with income above Rs 15 lakhs, who should fill up Form S. All others should fill Form T. An example of a person who should fill Form T is
Pipe A requires 50% less time to fill up the tank then pipe C. Ratio of time required by pipe B to fill up the tank and time required by pipe C to fill up the tank is 4 : 5. If total time taken to fill up the tank is 4 minutes when all the pipes are open. Find the difference between time taken by C and time taken by B to fill up the tank.
In the following question, two statements are numbered as A and B. On solving these statements, we get quantities A and B respectively. Solve both quantities and choose the correct option. Quantity A: There are two inlet pipes A, B and two outlet pipes C, D inlet pipe B takes 7 hours more to fill the tank when compared to A. Two outlet pipes when working together can empty the tank in 3.5 hours and efficiency of both the pipe is same if all of them working together can fill the tank in 2 hours. Calculate the time taken by A to fill the tank. Quantity B: The ratio of efficiencies of two pipes A and B is in the ratio 3 ∶ 2 and that of pipe B and C is 1 ∶ 3. Pipe A and B are inlet pipes, pipe C is outlet pipe working together they can fill the tank in 7.5 hours. Calculate the time taken by A to fill the tank when working alone.
A hose has three pipes. Pipe x and pipe y fill the hose and pipe z empties the hose. The pipe x can fill the tank alone in 15 hours. The pipe y can fill the same hose in 12 hours alone. The pipe z can completely empty the hose in 20 hours alone. If all the pipes are opened at the same time, how much time will it take to fill the fill the hose?
Three pipes A, B and C are available to fill a tank. The time taken to fill the tank by A is 15 hours and by B is 10 hours. The time taken to fill the tank by both A and B together is equal to the time required for C to fill it. How much time is required to fill the tank by all the three pipes together?