Question
Which of the following statements about the atmosphere
is correct? 1. Troposphere is the lowest layer of the atmosphere. 2. Ionosphere lies above the mesosphere.Solution
• Statement 1 is Correct: The Troposphere is the lowest layer of Earth's atmosphere. It contains roughly 75-80% of the atmosphere's mass and almost all water vapor. All weather phenomena (clouds, rain, etc.) occur here. • Statement 2 is Correct: The Ionosphere is a part of the upper atmosphere (specifically within the Thermosphere) that lies above the mesosphere. It is characterized by high concentrations of ions and free electrons and facilitates long-distance radio communication.
Which of the following is the correct definition of 'polymorphism' in Object-Oriented Programming?
Which SQL keyword is used to sort the result set?
Which of the following prevents inheritance in C++?
Which of the following is used to eliminate redundancy and anomalies in a database?
Which OOP principle allows a single interface to represent different underlying forms or data types?
The concept of "data hiding" is primarily achieved through which OOP principle?
Which of the following correctly describes the concept of 'encapsulation' in OOP?
A primary key in a table:
The result of a Cartesian product of two relations R and S will have:
In C++, if a base class has a virtual function, and a derived class overrides that function, which mechanism ensures that the correct derived class func...
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