Fundamental Concepts Of Chemistry Q 1-5

5 Questions | Total Attempts: 92

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Chemistry Quizzes & Trivia

Questions and Answers
  • 1. 
    The soul of chemistry is its dealing with :
    • A. 

      Internal structure changes in matter

    • B. 

      Composition of matter

    • C. 

      Properties of matter

    • D. 

      Composition and properties of matter

  • 2. 
    • A. 

      It has 20 mol of Hydrogen atoms

    • B. 

      It has 30 mol of Oxygen atoms

    • C. 

      It has 80 mol of atoms

    • D. 

      It has 30 mol of Hydrogen atoms

  • 3. 
    If [protcon number of two atoms is same then it can be concluded that:
    • A. 

      They are isotopes

    • B. 

      Compounds of both with cl2 will be similar in reactivity towards other compounds

    • C. 

      Both have same color

    • D. 

      Both have same melting points

  • 4. 
    A chemist poured lemon juice on soil, the idea that he may have in his mind is that :
    • A. 

      There may be a possibility of chemical reaction

    • B. 

      Lemon juice is dangerous to health

    • C. 

      Water should be preferred over lemon juice for drinking

    • D. 

      Lemon juice is good for health

  • 5. 
    Dr. Khan has discovered two elements of an element with atomic number 119. The relative abundance of isotopes 119Uue300 and 119Uue305 is 70% and 30% respectively. The average atomic weight of Uue is:
    • A. 

      301.5 a.m.u

    • B. 

      302.5 a.m.u

    • C. 

      303.5 a.m.u

    • D. 

      304.5 a.m.u