Biotechnology
Question : Pipe A can fill an empty tank in 30 hours and B can fill it in 10 hours. Due to a leakage in the tank, it takes pipes A and B together 1.5 hours more to fill completely than it would have otherwise taken. What is the time taken by the leakage alone to empty the same tank completely, starting when the tank is completely full?
Option 1: 42 hours
Option 2: 40 hours
Option 3: 36 hours
Option 4: 45 hours
Correct Answer: 45 hours
Solution : Time taken by pipe A to fill a tank = 30 hours Part of tank filled by pipe A in an hour = $\frac{1}{30}$ Time taken by pipe B to fill a tank = 10 hours Part of tank filled by pipe B in
Question : Select the most appropriate option to fill in the blank.
_____in biotechnology and medicine have resulted in higher expectancy rate and lower mortality rate.
Option 1: Arrogate
Option 2: Advancements
Option 3: Aversions
Option 4: Saturation
Correct Answer: Advancements
Solution : The correct choice is the second option.
Explanation: The word advancements is a noun that refers to the action or process of advancing or developing. This fits well with the idea that these advancements have resulted in a higher life expectancy rate and a
Question : Improve the underlined part of the sentence. Choose 'No improvement' as an answer if the sentence is grammatically correct.
Even in time of natural disasters, the farmers had to pay their share of taxes.
Option 1: times of natural
Option 2: timer of natural
Option 3: times of naturally
Option 4: No improvement
Correct Answer: times of natural
Solution : The underlined part can be improved by choosing the first option.
Explanation: The original phrase "Even in time of natural disasters" is grammatically correct but can be refined for better clarity. The suggested improvement, "Even in times of natural disasters" is a more
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