List of top Questions asked in CBSE CLASS XII

Optical recording system needs a motor. (True/False)
In a CD recorder, the stage that combines digital data with error control and sync word is:
The play time of a DVD is:
Which of the following is not part of A to D Converter?
Ribbon tweeters are often used in place of horn loaded compression tweeters because:
What is the frequency range of flute?
Sound waves produced at the back of a loudspeaker are________________________ degrees out of phase with respect to sound waves produced in front.
The loudspeaker driver used for low frequency range is called_____________________.
Crystal microphones work based on:
A moving coil microphone is also called:
Decibel is the unit used to measure sound intensity. (True/False)
Maintenance and servicing of machines in large manufacturing industries are done:
In three-prong plugs, the third prong works as:
Damaged cables must be repaired or removed from service immediately. (True/False)
The process of identification of hazards in the workplace and their associated effect on health is called evaluation. (True/False)
Which of the following is not an occupational disease?
Identify the picture.
Almost all the accidents usually occur due to lack of safety. (True/False)
Which of the following is true for entrepreneurs?
Which of the following is not a green job?
What is the default save type of a newly created spreadsheet?
Which of the following is not an internal motivational force?
People who help and take care of others have______________________________ personality trait. (Openness/Agreeableness)
It is important to clearly communicate instructions, ideas and concepts that can help you find success in any career. (True/False)
Discuss the costume worn by men and women in ancient Greek civilization.