Sail E0 Webinar

General Knowledge > General Science


Total Questions : 30 | Page 1 of 3 pages
Question 1. Compounds form when _______________
  1.    atoms of one element bond together
  2.    atoms of two or more elements bond together
  3.    molecules of one element are mixed together
  4.    molecules of two or more elements are mixed together
 Discuss Question
Answer: Option B. -> atoms of two or more elements bond together
Question 2. Soap is a weak base
  1.    they taste sour
  2.    they taste sweet
  3.    they taste bitter
  4.    they taste salty
 Discuss Question
Answer: Option C. -> they taste bitter
Question 3. Which of these solutions is an acid?
  1.    Dish Soap: pH of 12
  2.    Tomato Soup: pH of 4
  3.    Baking Soda: pH of 9
  4.    Drain Cleaner: pH of 14
 Discuss Question
Answer: Option B. -> Tomato Soup: pH of 4
Question 4. Explain what happens when a strong acid and a strong base are poured into the same container
  1.    they form separate layers
  2.    they mix physically but not chemically
  3.    they break apart into separate elements
  4.    they react chemically to form a salt
 Discuss Question
Answer: Option D. -> they react chemically to form a salt
Question 5. Ammonia has a pH of 12
  1.    an acid
  2.    a base
  3.    an element
  4.    a metal
 Discuss Question
Answer: Option B. -> a base
Question 6. Which of the following is a basic solution?
  1.    household ammonia
  2.    HCl dissolved in water
  3.    Vinegar
  4.    Pure water
 Discuss Question
Answer: Option A. -> household ammonia
Question 7. A substance is found to have the following characteristics:Very bitter taste Feels slippery to the touch Produces OH- ions when dissolved in water In what category would the substance be classified?
  1.    acid
  2.    base
  3.    enzyme
  4.    fatty acid
 Discuss Question
Answer: Option B. -> base
Question 8. What completely ionizes in solution?
  1.    Weak acids
  2.    Strong acids
  3.    Strong Salts
  4.    Neutral salts
 Discuss Question
Answer: Option B. -> Strong acids
Question 9. Phenolophalein turns from clear to pink when the pH turns
  1.    acidic
  2.    basic
  3.    saline
  4.    ionic
 Discuss Question
Answer: Option B. -> basic
Question 10. Which of these pH values represent an acid?
  1.    4
  2.    8
  3.    10
  4.    12
 Discuss Question
Answer: Option A. -> 4

Latest Videos

Latest Test Papers