Tag: science & technology

Quizzes (551) Questions (11015)

Questions Related to science & technology

Multiple choice general knowledge science & technology

Rho is use to represent which of the folowing physcal unit?

  1. finite change

  2. density

  3. resistance

  4. radioactive half-life
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The Greek letter Rho (ρ) is used to represent density (B) in physics and engineering. It represents mass per unit volume. Finite change uses delta (Δ), resistance uses R (sometimes omega Ω for impedance), and radioactive half-life uses specific symbols or T½.

Multiple choice general knowledge science & technology

This extension refers usually to what kind of file? (.WAV )

  1. Image file

  2. Winamp playlist

  3. Animation/Movie file

  4. Audio file
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

WAV (Waveform Audio File Format) is a standard audio file format developed by Microsoft and IBM. It stores uncompressed audio data and is commonly used for high-quality audio on Windows systems. Image files use extensions like .JPG or .PNG, Winamp uses .M3U playlists, and video/movie files use .AVI or .MP4.

Multiple choice general knowledge science & technology

This extension refers usually to what kind of file? (.PSD )

  1. Image File

  2. Adobe Acrobat File

  3. Compressed Archive file

  4. MS Office Document
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

PSD is the proprietary file format for Adobe Photoshop, the industry-standard image editing software. It stands for 'Photoshop Document' and stores layers, masks, and other image manipulation data. Adobe Acrobat files are PDFs, compressed archives use .ZIP or .RAR, and MS Office documents use extensions like .DOCX or .XLSX.

Multiple choice general knowledge science & technology

This extension refers usually to what kind of file? (.MOV )

  1. Image File

  2. Audio File

  3. Animation/Movie File

  4. MS Office Document
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

MOV is a file extension for the QuickTime multimedia format developed by Apple, used for storing and playing video and animation files. It can contain multiple tracks for audio, video, and text. Image files use .JPG or .PNG, audio files use .MP3 or .WAV, and MS Office documents use .DOCX or .PPTX.

Multiple choice general knowledge science & technology

This extension refers usually to what kind of file? (.PSP )

  1. System File

  2. Image File

  3. Animation/Movie File

  4. Active server page
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

.PSP is the file extension for PaintShop Pro, a popular image editing software. It stores layered image data and is specifically used for raster graphics, making 'Image File' the correct category. System files use extensions like .SYS or .DLL, while movie files use .AVI, .MOV, or .MP4.

Multiple choice general knowledge science & technology

This extension refers usually to what kind of file? (.LNK )

  1. Windows shortcut file

  2. Hypertext related file

  3. Temporary file

  4. Image file
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

.LNK is the standard file extension for Windows shortcuts. These are small files that point to another file or program location on the system, allowing quick access. They are not hypertext files, temporary files (which use .TMP), or image files.

Multiple choice general knowledge science & technology

When a spring is released, its potential energy is converted to

  1. Magnetic Energy

  2. Light Energy

  3. Kinetic Energy

  4. Electrical Energy
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

When a compressed spring is released, the stored elastic potential energy converts into kinetic energy as the spring gains motion. This is a fundamental principle of energy transformation in mechanical systems. The other options (magnetic, light, electrical) are unrelated to spring mechanics.

Multiple choice general knowledge science & technology

How much heat is required to raise the temperature of 1g of water by 1 degree celsius.

  1. 100 Joules

  2. 1 Calorie

  3. 100 Calories

  4. 1 Joule
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

One calorie is defined as the amount of heat energy required to raise the temperature of 1 gram of water by 1 degree Celsius. This is the scientific definition of the small calorie (cal). Note that 1 Calorie (with capital C, used in nutrition) equals 1000 small calories.

Multiple choice general knowledge science & technology

This extension refers usually to what kind of file? (.TTF )

  1. Image File

  2. True Type Font

  3. Audio File

  4. Programming/Script Related File
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

.TTF stands for TrueType Font, a widely used font format developed by Apple and Microsoft. It contains outline font data for displaying text on screens and in print. It is not an image file format (like .JPG or .PNG), audio file (.MP3), or programming file (.PY, .JS).

Multiple choice general knowledge science & technology

This extension refers usually to what kind of file? (.ICO )

  1. Icon

  2. Audion File

  3. Animation/Movie File

  4. Image Color Matching Profile File
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

.ICO is the standard file extension for icon files used in Windows operating systems. These files contain small bitmap images at multiple sizes and color depths. Option D 'Image Color Matching Profile File' refers to .ICM files, not icons. Audio files use extensions like .MP3 or .WAV.