Chemistry Questions Answers Online Quiz Test

• 1. A catalyst is a substance which
  

  1. increases the activation energy
  2. increases the rate of reaction and increases the equilibrium concentration of products
  3. changes the equilibrium of a reaction so that the concentration of the product increases
  4. hastens the attainment of equilibrium

• 2. The high reactivity of fluorine is due to ?

  1. small size of fluorine atom
  2. its high electro negativity
  3. availability of d-orbitals
  4. strong F - F bond

• 3. The main chemical constituent of clay is ?

  1. aluminium silicate
  2. zeolites
  3. aluminium borosilicate
  4. silicon oxide

• 4. Which element found in all organic compounds ?

  1. carbon
  2. nitrogen
  3. calcium
  4. none of them

• 5. Alloys made with mercury as one metal are called ?

  1. mixtures
  2. emulsions
  3. solders
  4. amalgams

• 6. All noble gases are ?

  1. colourless
  2. colourless
  3. colourless and odourless
  4. colourless and but have odour

• 7. What is the hardest form of carbon ?

  1. coke
  2. graphite
  3. charcoal
  4. diamond

• 8. What is hottest part of the gas flame is called ?

  1. blue zone
  2. luminous zone
  3. dark zone
  4. non-luminous zone

• 9. Atomic number of an element gives

  1. the number of nucleons in its atom
  2. the number of electrons in its atom
  3. the weight of the atom of the element
  4. the total number of elementary particles in its atom

• 10. Faraday's Law is associated with

  1. Reaction of gases
  2. Pressure of gases
  3. Electrolysis
  4. Temperature and pressure

• 11. Enzymes are
  

  1. Fatty acids
  2. Carbohydrates
  3. Nucleic acids
  4. Proteins

• 12. Elements that show the properties of both metals and non metals are called ?
  

  1. metalloids
  2. allotropes
  3. alloys
  4. colloids

• 13. Ozone is :

  1. Non-magnetic
  2. Paramagnetic
  3. Ferromagnetic
  4. Diamagnetic

• 14. Petroleum is found in ?

  1. Marshy land
  2. Metamorphic rocks
  3. Igneous rock
  4. Sedimentary rocks

• 15. Permanent hardness of water is due to the presence of ?

  1. Magnesium bicarbonate
  2. Calcium bicarbonate
  3. Sodium bicarbonate
  4. Calcium sulphate

• 16. What is laughing gas ?
  

  1. nitrous oxide
  2. nitric oxide
  3. nitrogen oxide
  4. nitrogen peroxide

• 17. The acid generally stored in batteries is

  1. Nitric Acid
  2. Hydrochloric Acid
  3. Sulphuric Acid
  4. Acetic Acid

• 18. Sugars are converted in the liver into

  1. Glycogen
  2. Vitamin
  3. Monosaccharide
  4. None of above

• 19. The ejection of electrons when a metal surface is irradiated is known as

  1. Black body radiation
  2. Photoelectric effect
  3. Zeeman effect
  4. Atomic spectrum

• 20. The cyclotron is used to

  1. accelerating particles
  2. separating elements
  3. purifying metals
  4. making alloys