Question : The adverse effects occurring within a short time of administration of a single dose or multiple doses given within 24 hours are defined as:

Option 1: chronic toxicity

Option 2: acute toxicity

Option 3: LD 50

Option 4: LC 50

Question : A₁, A₂, and A₃ alone can complete a piece of work in 12 hours, 24 hours, and 16 hours respectively. Working together, in how much time will they complete the same work?

Option 1: 5 hours 30 minutes

Option 2: 5 hours 20 minutes

Option 3: 4 hours 20 minutes

Option 4: 3 hours 30 minutes

Question : Select the most appropriate synonym of the given word.
Acute

Option 1: Obtuse

Option 2: Faithful

Option 3: Chronic

Option 4: Dire

Question : A train runs at an average speed of 85 km/hr. Find the time taken by the train to cover a distance of 1275 km.

Option 1: 15 hours

Option 2: 14 hours

Option 3: 17 hours

Option 4: 12 hours

Question : Pipe P alone can fill a tank in 18 hours and Pipe Q alone can fill the same tank in 24 hours. If both the pipes are opened on alternate hours one at a time and pipe Q is opened for the first hour, then in how much time the tank will be full?

Option 1: $\frac{64}{5}$ hours

Option 2: $\frac{78}{5}$ hours

Option 3: $20$ hours

Option 4: $\frac{62}{3}$ hours

Question : The speed of a boat in still water is 9 km/hr and the speed of the stream is 6 km/hr. If a man goes a distance of 45 km against the stream and comes back to the starting point, then what is the total time taken by him?

Option 1: 20 hours

Option 2: 30 hours

Option 3: 24 hours

Option 4: 18 hours