Worksheetsmindzone 7.0
Total questions: 25
Worksheet time: 13mins
1. Ohm’s Law is defined as:
A) V = I + R
B) V = IR
C) V = I/R
C) V = I/R
2. Which device converts AC to DC?
A) Transformer
B) Capacitor
C) Rectifier
D) Oscillator
3. The color code for a 220Ω resistor with 5% tolerance is:
A) Red, Red, Black, Gold
B) Red, Red, Brown, Gold
C) Red, Black, Red, Gold
D) Red, Red, Orange, Gold
4. The function of a capacitor is to:
A) Allow AC and block DC
B) Store electric charge
C) Act as a switch
D) Convert DC to AC
5. What is the frequency of AC mains in India?
A) 50 Hz
B) 60 Hz
C) 100 Hz
D) 25 Hz
6. In a P-N junction diode, current flows when
A) It is reverse biased
B) It is forward biased
C) Both directions
D) Never flows
7. The output of a NOT gate is:
A) Same as input
B) Opposite of input
c) Zero
d) Double the input
8. Which of the following law is used for solving complex electrical networks?
A) Lenz’s Law
B) Kirchhoff’s Law
C) Faraday’s Law
D) Coulomb’s Law
9. Which keyword is used to create an object in Java?
A) class
B) object
C) new
D) this
10. Which of the following is used to run a Java program?
A) javac
B) java
C) javadoc
D) JVM
11. Which keyword is used to inherit a class in Java?
A) implement
B) extends
C) inherits
D) super
12. What will the following code print?
int x = 10; System.out.println(++x);
A) 10
B) 11
C) 9
D) Error
13. Which one of these is a valid identifier in Java?
A) 1number
B) class
C) number1
D) void
14 .Three friends split a bill of ₹300 equally at a restaurant. They each paid ₹100. Later, the waiter realizes the bill was only ₹250. He returns ₹50 to them, giving ₹10 to each and keeping ₹20 for himself.Now, each friend paid ₹90. 3 x ₹90 = ₹270 + ₹20 with the waiter = ₹290. Where is the missing ₹10?
A) They were overcharged ₹10
B) There's no missing money; it's a misdirection
C) The waiter kept too much
D) One friend paid extra
15 . A man goes to a restaurant and orders iced tea. He drinks 5 glasses quickly. Another man drinks one glass slowly. Later, the second man dies of poisoning. How?
A) The poison was in the ice
B) The poison was in the glass
C) The man drank too slowly
C) The man drank too slowly
16. What is the size of an int data type (typically on a 32-bit system)?
A. 2 bytes
B. 4 bytes
C. 8 bytes
D. Depends on the compiler
17. Which of the following is a valid loop in C?
A. repeat-until
B. loop-whileC. do-while
C. do-while
D. until-do
18. Which of the following is a correct if statement in C?
A. if a > b
B. if (a > b)
C. if a > b then
D. if (a > b) then
19. What will be the output of this code?
printf("%d", 10 / 4);
A. 2.5
B. 2
C. 3
D. Error
20. Which operator is used to access the value at the address stored by a pointer?
A. &
B. *
C. ->
D. %
21. Which header file is required for malloc() function?
A. #include<malloc.h>
B. #include<stdlib.h>
c. #include<stdio.h>
D. #include<memory.h>
22. What is the capital city of Japan?
A. Beijing
B. Seoul
C. Tokyo
D. Bangkok
23. The Great Wall of China was primarily built to protect against which group?
A. Mongols
B. Romans
C. Vikings
D. Aztecs
24. Which element has the highest melting point?
A. Iron
B. Tungsten
C. Carbon
D. Platinum
25. Which treaty ended the Thirty Years’ War in 1648?
A. Treaty of Versailles
B. Treaty of Westphalia
C. Treaty of Paris
D. Treaty of Utrecht
