Question

Arrange the given events in chronological order.

\[ \begin{array}{ll} (a) & \text{Launch of Google} \\ (b) & \text{Creation of WWW} \\ (c) & \text{Introduction of the iPhone} \\ (d) & \text{Launch of Facebook} \end{array} \]

• A. \( b \rightarrow a \rightarrow d \rightarrow c \)
• B. \( a \rightarrow c \rightarrow d \rightarrow b \)
• C. \( b \rightarrow d \rightarrow a \rightarrow c \)
• D. \( d \rightarrow a \rightarrow b \rightarrow c \)

Hint:

For chronology questions, write the year beside each event first. Once the years are known, arranging the events becomes quick and error-free.

Answer 1

The Correct Option is A

Step 1: Finding the year of creation of the World Wide Web (WWW).
The World Wide Web was invented by \[ \text{Tim Berners-Lee} \] at CERN. The proposal for the WWW was made in: \[ 1989 \] Therefore, \[ (b) = 1989 \]

Step 2: Finding the year Google was launched.
Google was founded by \[ \text{Larry Page and Sergey Brin} \] and officially launched in: \[ 1998 \] Therefore, \[ (a) = 1998 \]

Step 3: Finding the year Facebook was launched.
Facebook was launched by \[ \text{Mark Zuckerberg} \] along with his colleagues. The launch year was: \[ 2004 \] Therefore, \[ (d) = 2004 \]

Step 4: Finding the year the iPhone was introduced.
The first iPhone was introduced by \[ \text{Apple Inc.} \] under the leadership of Steve Jobs. The launch year was: \[ 2007 \] Therefore, \[ (c) = 2007 \]

Step 5: Arranging all events from earliest to latest.
\[ \begin{array}{c|c} \text{Event} & \text{Year} \hline (b) & 1989 (a) & 1998 (d) & 2004 (c) & 2007 \end{array} \] Hence, \[ b \rightarrow a \rightarrow d \rightarrow c \] Final Conclusion: The correct chronological order is: \[ {b \rightarrow a \rightarrow d \rightarrow c} \] Therefore, \[ {\text{Option (A)}} \]