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ICSE Class X Prelims 2025 : Mathematics

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Model Test Paper Class II Std Chapter 3 1. What is the objective of Smart Goggles? 2. A buzzer is a _______________ device. a. ELECTROMECHANICAL b. PIEZOELECTRIC c. ELECTROCHEMICAL 3. Ultrasonic sensor head consists of a transmitter and a receiver. a. True b. False 4. The odd component which is not used in Smart Goggle. a. Motherboard c. Qbits b. Buzzer d. IR Sensor 5. What is/are the Input component/s used in Smart Goggles. a. IR Sensor c. Ultrasonic Sensor b. LED 6. Ultrasonic sensor produces. a. Light Waves b. Ultrasound waves 7. What is/are the output component/s used in Smart Goggles. a. Buzzer c. LDR Sensor b. LED 8. Write the 5 components used in Smart Goggle. 9. Explain Qbits kit. 10. Identify me? a. b. Model Test Paper Class II Std 1. What are the two applications of LDR sensor. 2. Is LED an actuator? a. YES b. NO 3. LDR sensor is an __________ device. 4. LED is an ___________ device. 5. LDR stands for ______________________ a. LIGHT DISTANCE REGISTER b. LIGHT DEPENDENT REGISTER c. LOW DISTANCE REGISTER 6. LDR works on the principle of _____________ a. PHOTOCONDUCTIVITY b. CURRENT CONDUCTIVITY 7. What is the objective of Automatic Streetlight? 8. Write the two advantages of Automatic Streetlight. 9. LED stands for _____________ 10. Identify me? a. b. Chapter 4 CHAPTER-3 -ANSWER KEY 1. To detects the obstacles with help of ultrasonic sensor and produce an alert sound with the help of Buzzer, helping to avoid collisions. 2. b) PIEZOELECTRIC 3. a) True 4. d) IR Sensor 5. c) Ultrasonic Sensor 6. b) Ultrasound waves 7. a) Buzzer 8. 5 components used in Smart GogglesUltrasonic Sensor, Buzzer, Motherboard, RJ cable, Android device. 9. Qbits Kits are; 5 hole pillar, T connector, I Block, L Block, Connector, Wheels, Castor Wheels, 45Degree Block 10. a. Ultrasonic Sensor, b. Buzzer CHAPTER-4 -ANSWER KEY 1. Applications are: a) Automatic Streetlight b) Photography 2. a. YES 3. Input 4. Output 5. b. LIGHT DEPENDENT REGISTER 6. a. PHOTOCONDUCTIVITY 7. The objective of an automatic streetlight system is to turn ON/OFF the streetlight based on light conditions in the outside surrounding without manual intervention. 8. Advantages are: a) Save electricity b) Reduce Cost 9. LIGHT EMITTING DIODE 10. a. LDR b. LED

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