All questions of Preposition for Class 9 Exam

Understanding the Correct Answer: Option B - "Within"
When discussing the phrase "I'll be ready to leave _____ ten minutes," it's essential to understand the nuances of the prepositions presented.
Meaning of "Within"
- The word "within" indicates a time frame or a limit within which something will occur.
- For example, "within ten minutes" suggests that the action will be completed at any time before the ten-minute mark is reached.
Comparing Other Options
- Option A: "On"
- This would imply a specific moment in time, which is not suitable for the context of preparing to leave.
- It suggests an exact time (e.g., "on 3 PM"), not a duration.
- Option C: "By"
- While "by ten minutes" might seem appropriate, it typically indicates a deadline rather than a timeframe.
- It implies that the action could happen anytime up to ten minutes but doesn't emphasize the ongoing process of getting ready.
- Option D: "None of these"
- This option is incorrect because "within" accurately fits the context.
Conclusion
In summary, using "within" effectively communicates that the readiness to leave will happen anytime up to the ten-minute mark, making it the most appropriate choice in this context. Understanding the subtle differences between these prepositions can enhance clarity in communication.

Preposition of Movement

The correct answer is option 'A', across.

Explanation:

Preposition of movement indicates how something moves from one place to another. The preposition across is used to indicate movement from one side to another side of something. Therefore, to reach the destination, one has to move across the field.

Other examples of preposition of movement are:

- To indicate movement from one place to another, we use prepositions like to, towards, and into.
Example: She walked towards the park.
- To indicate movement away from a place, we use prepositions like from, out of, and away from.
Example: He ran away from the building.
- To indicate movement along a path, we use prepositions like along, down, and up.
Example: The river flows down the valley.

Liquid hydrogen is the fuel used in rockets and various spaceships. It is light and extremely powerful rocket propellant, has lowest molecular weight and burns with extreme intensity. In combination with an oxidizer such as liquid oxygen, liquid hydrogen yields the highest specific impulse.

Explanation:

The correct answer is option 'B' - "at".

When we talk about someone's residential address, we use the preposition "at". The preposition "at" is used to indicate a specific location or position, and it is commonly used to refer to someone's home address.

In the given sentence, the phrase "lives at M.G. Road" indicates that the person's best friend resides or stays at M.G. Road. This means that M.G. Road is the specific location where the best friend's home is located.

Using the preposition "in" would not be appropriate in this context because "in" is used to refer to a larger area or a general location. It is commonly used to indicate being inside or within a larger region.

The preposition "on" is also incorrect in this context because it is used to indicate being physically on top of something or to refer to a specific surface. It is not appropriate to use "on" when referring to someone's residential address.

Summary:

To correctly indicate someone's residential address, we use the preposition "at". Therefore, the correct answer is option 'B' - "at".