Q. The author argues that the rise of digital media has transformed the way we consume information, leading to a culture that values ______ over depth.
A.accuracy
B.entertainment
C.complexity
D.authenticity
Solution
The phrase 'values over depth' indicates a preference for something that is more superficial, which fits with entertainment.
Q. The average of three numbers is 30. If one number is removed, the average becomes 25. What is the removed number?
A.35
B.30
C.25
D.20
Solution
Let the three numbers be x, y, z. (x + y + z) / 3 = 30 => x + y + z = 90. After removing one number, (x + y) / 2 = 25 => x + y = 50. Therefore, removed number = 90 - 50 = 40.
Q. The average speed of gas molecules is given by the formula:
A.(8kT/πm)^(1/2)
B.(3kT/m)^(1/2)
C.(2kT/m)^(1/2)
D.(kT/m)^(1/2)
Solution
The average speed of gas molecules is given by the formula v_avg = (8kT/πm)^(1/2), where k is the Boltzmann constant, T is the temperature, and m is the mass of a gas molecule.
Q. The average speed of gas molecules is given by which of the following expressions? (2022)
A.√(8RT/πM)
B.√(3RT/M)
C.√(2RT/M)
D.√(RT/M)
Solution
The average speed of gas molecules is given by the expression v_avg = √(8RT/πM), where R is the universal gas constant, T is the temperature, and M is the molar mass of the gas.
Q. The average speed of gas molecules is given by which of the following formulas? (2023)
A.(8kT/πm)^(1/2)
B.(3kT/m)^(1/2)
C.(2kT/m)^(1/2)
D.(kT/m)^(1/2)
Solution
The average speed of gas molecules is given by the formula v_avg = sqrt(8kT/πm), where k is the Boltzmann constant, T is the temperature, and m is the mass of a molecule.
Q. The Berlin Conference of 1884-85 is significant for its impact on which aspect of border management?
A.Establishing trade routes in Asia
B.Dividing Africa among European powers
C.Defining the borders of the Ottoman Empire
D.Creating buffer states in Europe
Solution
The Berlin Conference of 1884-85 is significant for dividing Africa among European powers, leading to arbitrary borders that disregarded ethnic and cultural divisions.
Correct Answer: B — Dividing Africa among European powers
Q. The Bill of Rights, ratified in 1791, is significant in American history for which of the following reasons?
A.It abolished slavery in the United States.
B.It established the framework for the federal government.
C.It enumerated specific rights and protections for individuals.
D.It granted women the right to vote.
Solution
The Bill of Rights is significant because it enumerated specific rights and protections for individuals, ensuring fundamental liberties such as freedom of speech and religion.
Correct Answer: C — It enumerated specific rights and protections for individuals.
Q. The capacitance of a parallel plate capacitor is directly proportional to which of the following? (2019)
A.Distance between plates
B.Area of plates
C.Voltage across plates
D.Dielectric constant
Solution
Capacitance (C) is directly proportional to the area of the plates (A) and the dielectric constant (ε) and inversely proportional to the distance (d) between the plates.