List of top Questions asked in CBSE CLASS XII- 2026

Fire extinguishers used to extinguish electrical fires are labelled as Class ________.
Impedance, in general, is the opposition to voltage. (True/False)
Which of the following is not a protective equipment?
Frequency response of a microphone depends on nature of the metal diaphragm and the shape of the case. (True/False)
Write any two merits of piezoelectric microphone.
Which of the following is not a safety concern in a manufacturing industry?
What do you mean by occupational hygiene?
The process of establishing a hazardous location or agent at the workplace is called
What is self-awareness?
A ________ is a company that is in the first stage of its operations.
Occupational diseases are generally caused by poor work or working conditions. (True/False)
In which sector do green jobs contribute to the development and implementation of renewable energy sources?
Begin working on electrical equipments only when they are energized. (True/False)
Which view in a presentation application allows you to see all your slides at once?
What is a key characteristic of Schizoid personality disorder?
What is the first step in the active listening process?
What is a Digital multimeter? Write its features and draw its schematic block diagram.
With control circuit diagram, explain the working of direct on-line motor starter.
Explain the good handling technique of lifting heavy load manually at workplace.
Write the precautions to be taken while using a single-phase motor. Also give its advantages and disadvantages over three-phase induction motor.
Explain in brief the different types of cooling systems used for transformers.
Draw a labelled diagram of an Electric Mixer.
Draw a diagram showing inductance in an AC circuit with the voltage and current waveform.
Write any two precautions to be taken while using an immersion heater.
Explain the basic concept of transformer. Mention any two different types of transformers.