Which one of the following is the correct sequence according to atomic weights?

Related Mcqs:

1. The atomic radii decreases by increasing atomic number in________________?

   A. Alkali metal
   B. Alkaline earth metal
   C. Elements from Li to Ne
   D. Halogens

2. Which sequence of steps is correct for the manufacture of cement ?

   A. crushing heating mixing grinding
   B. crushing mixing heating grinding and mixing
   C. crushing grinding mixing heating
   D. mixing heating grinding crushing

3. Which of the following have their outer most shell complete in atomic form ?

   A. Noble gases
   B. Alkali metals
   C. Coinage metals
   D. Gun metals

4. How many isotopes have odd atomic number ?

   A. 154
   B. 280
   C. 86
   D. 300

5. Atom with higher atomic number produces X-rays of__________________?

   A. Shorter wavelength
   B. Larger wavelength
   C. X-ray not produced
   D. All are possible

6. The atomic number of an element having maximum number of unpaired electrons in p-subshell is_______________?

   A. 7
   B. 10
   C. 12
   D. 16

7. Increase in atomic number is observed during_________________?

   A. Alpha emission
   B. Beta emission
   C. Both A & B
   D. Radioactivity

8. The atoms of same element having same atomic number but different mass number are called____________________?

   A. Isobars
   B. Isomers
   C. Isotopes
   D. Isotropes

9. The number of atoms present in 21.6 gram of silver (atomic weight = 108) are same as the molecules in__________?

   A. 1.8 gram of H₂O
   B. 12 moles of KMnO₄
   C. 0.6N H₂SO₄
   D. 4.6 gram of C₂H₅OH

   Submitted by: Muhammad Ali Kunbhar

10. In a group, atomic radii increase due to successive increase of _________ ?

    A. Electronic shells
    B. Proton shells
    C. Neutron shells
    D. Nucleus

    Submitted by: Rashid Mehmood