class xi science and management sec d

What is a key characteristic of the first generation of computers?

• Incorporation of artificial intelligence features.

• Reliance on magnetic tape for storage.

• Use of transistors and small physical size.

• Use of vacuum tubes and large physical size.

How did the second generation of computers differ from the first?

• The second generation of computers differed from the first by using transistors instead of vacuum tubes.

• The second generation operated on punch cards instead of magnetic tape.

• The second generation used mechanical parts instead of transistors.

• The second generation was the first to use integrated circuits.

What are the main features of the fourth generation of computers?

• Vacuum tubes and punch cards

• Analog devices and mechanical components

• Mainframe computers and batch processing

• Microprocessors, personal computers, software applications, GUIs, and networking capabilities.

What advancements define the fifth generation of computers?

• Advancements in mechanical engineering and hardware design.

• Development of analog computing and vacuum tube technology.

• Improvements in basic arithmetic operations and data storage.

• Advancements in artificial intelligence, natural language processing, and quantum computing.

What is the correct syntax to declare a variable in C?

• int x;

• declare int x;

• var int x;

• int: x;

Which of the following is a valid comment in C programming?

• // This is a comment

• /* This is a comment

• ** This is a comment **

• -- This is a comment --

What is the output of the following code: printf("%d", 5 + 3);?

• Error

• 53

• 8

• 5

What is the purpose of the 'if' statement in C programming?

• To execute a block of code only if a specified condition is true.

• To define functions.

• To declare variables.

• To create loops.

Which of the following correctly represents a nested 'if' statement in C?

• if (x > 0) { if (y > 0) { printf("Both are positive"); } }

• if (x > 0) { printf("X is positive"); } if (y > 0) { printf("Y is positive"); }

• if (x > 0) then { printf("X is positive"); }

• if (x > 0) { if (y > 0) printf("Both are positive"); }

What will be the output of the following code: if (5 > 3) printf("True"); else printf("False");?

• No output

• Error

• False

• True