home | about us | contact us | advertise | suggestion 

 

 

 
CATEGORIES (Non Flash)
FLASH QUIZ
MATHS MAGIC
Numbers
Algebra
Geometry
Test
Data
Measurement
Math Puzzles
Definitions
STORY TIME
Moral Stories
Short Stories
GAMES & FUN
TUTORIAL
Web Designing
FTP
Front Page
Dremweaver

 

 

 

 

 
SCIENCE QUIZ :: 01 :: 02 :: 03 :: 04 :: 05 :: 06 :: 07 :: 08 :: 09 :: 10 :: 11 :: 12 :: 13
 

Science Quiz 01

  1. Some lasers are referred to as being “cw.” What does “cw” mean?

    Circular wave

    Constant white

    Continuous wave

    Clear white

  2. What is the process responsible for producing photons in a diode laser?

    Fermi level shift

    Majority carrier injection

    Carrier freeze out

    Electron-hole recombination

  3. What are three types of lasers?

    Gas, metal vapor, rock

    Pointer, diode, CD

    Diode, inverted, pointer

    Gas, solid state, diode

  4. What was the active medium used in the first working laser ever constructed?

    A diamond block

    Helium-neon gas

    A ruby rod

    Carbon dioxide gas

  5. After the first photons of light are produced, which process is responsible for amplification of the light?

    Blackbody radiation

    Stimulated emission

    Planck’s radiation

    Einstein oscillation

  6. Once the active medium is excited, the first photons of light are produced by which physical process?

    Blackbody radiation

    Spontaneous emission

    Synchrotron radiation

    Planck’s oscillation

  7. The first step to getting output from a laser is to excite an active medium. What is this process called?

    Pumping

    Exciting

    Priming

    Raising

  8. Breaking of a larger hydrocarbon molecule into a smaller one by heating in the presence of a catalyst is called ___.

    Cracking

    Orthofugation

    Centrifugation

    Thermogenation

  9. A primary fuel is that which is used in the same form as it occurs in nature. Which of the following is not a primary fuel?

    Kerosene

    Wood

    Coal

    Natural Gas

  10. Where was the first oil well struck in the world?

    Kuwait

    USA

    Saudi Arabia

    Australia

  11. What is the process used to separate the different components of oil?

    Deadly Distillation

    Simple Distillation

    Fractional Distillation

    Destructive Distillation

  12. What is the main constituent of coal gas?

    Oxygen

    Water

    Nitrogen

    Methane

  13. Which variety of coal contains the highest percentage of carbon?

    Anthracite

    Peat

    Bituminous

    Lignite

  14. Coal is formed due to the process of...?

    Evaporation

    Centrifugation

    Conjugation

    Carbonization

  15. Which of these has the highest calorific value?

    Rubber

    Wood

    Coal

    Hydrogen

  16. What is the main component of biogas and natural gas?

    Ethane

    Methane

    Methane

    Butane

  17. Heating fuels in the absence of air is called 'Destructive Distillation', as it 'destroys' it to form simpler substances. What do we get when we do the same to wood?

    Tar

    Acetic Acid

    Charcoal

    All of these

  18. If you wanted to lighten your hair at home, what is the active ingredient in the dye preparation that will lighten your hair?

    Hydrogen peroxide

    Acetic acid

    Sodium hydroxide

    Phenol

  19. "Antifreeze" is used in car radiators to stop the liquid that cools the engine from, well, freezing when it gets cold outside. Water is one component of antifreeze; what is the other main component?

    Ethylene glycol

    Acetone

    Sodium chloride

    Benzene

  20. Aspirin can be found in many household medicine cabinets. But what is it chemically?

    Paracetamol

    Acetylsalicylic acid

    Acetaminophen

    Ibuprofen

Another Quiz by QuizTrial

 
 
     

     

 

 FLASH Quiz Menu      Animal         Films      Food & Drink       General Knowledge        Geography Quiz     

NON FLASH Quiz Menu      Animal Quiz       Books Quiz     Computer Quiz       Cricket Quiz

 

SUBSCRIBE TO
QuizTrial
 Newsletter

 
 
     
 

 QuizTrial, Site Best viewed in 800 X 600 Resolution with more than 256 colors.
mail to info@quiztrial.com with comments about this web site -- copyright © QuizTrial

All materials in this site is subject to the views and opinion of the developers who cannot be held responsible towards any misconception
and misinterpretation. All information on this site is only for general use and in the interest of the public
 Privacy Policy

  
 

Online Classes | Quizzes | Games | Practice Sessions |