Punjab 12th Class Chemistry Chapter 1 Periodic Classification of Elements & Periodicity MCQs Test Online Punjab 12th Class Chemistry Chapter 1 Periodic Classification of Elements & Periodicity MCQs Test Online 1234567891011121314151617181920Show paginator Hide paginator Question 1 of 20Chemistry 1. Which one is an incomplete period?1.4th2.5th3.7th4.6th Question 1 of 20Question 2 of 20 2. Mork the correct statement1.Na' is larger than Na atom2.Na- is smaller than Na atom3.CV (ion) and Cl (atom) are equal in size4.Cl - is smaller than CI atomQuestion 2 of 20Question 3 of 20 3. In the Mendeleev's periodic law the properties of elements are periodic function of their:1.Densities2.Volume3.Atomic number4.Atomic massesQuestion 3 of 20Question 4 of 20 4. The concept of atomic number was introduced by1.Dobereiner2.AL-nazi3.Moseley 4.MendeleeveQuestion 4 of 20Question 5 of 20 5. Mark the correct statement1.The ionization energy of calcium is lower than that of magnesium.2.The ionization energy of calcium is higher than that of beryllium.3.The ionization energy of calcium is lower than that of barium.4.The ionization energy of calcium is lower than that of strontium.Question 5 of 20Question 6 of 20 6. Mark the correct statement:1.Meting points of halogens increase down the group.2.Meting points of halogens remain the same throughout the group.3.Melting points of halogens first increase the then decrease down the group4.Meting points of halogens decrease down the group.Question 6 of 20Question 7 of 20 7. Position of isotopes in the periodic table was explained by:1.Mendeleeve2.Newland3.Lother Meyer4.MoseleyQuestion 7 of 20Question 8 of 20 8. Mark the correct statement.1.Metallic character remains the same down the group.2.Metallic character increases from left to right.3.Metallic character remains same from left to right.4.Metallic character increases down the group.Question 8 of 20Question 9 of 20 9. Mark the correct statement:1.Boiling points of Group IVA hydrides decrease down the group.2.The basicity of group HA oxides decreases on descending the group.3.Ionic character of hydrides increases from left to right in a period.4.Covalent character of metal halides increases form left to right in a period.Question 9 of 20Question 10 of 20 10. Mark the correct statement:1.Electron affinity is a measure of energy released by adding an electron2.Electron affinity is measure of energy released by removing an electron.3.Electron affinity is measure of energy required to excite an electron.4.Electron affinity is measure of energy required to remove the electron.Question 10 of 20Question 11 of 20 11. Transition elements in 4th period is220.127.116.11.18Question 11 of 20Question 12 of 20 12. Mark the correct statement1.All the noble gases are present in the same period,2.All the alkali metals are present in the same group,3.All halogens are present in the same period.4.All lanthanides are present in the same group.Question 12 of 20Question 13 of 20 13. Which statement Is Incorrect1.All the metals are good conductor of electricity2.All the metals form positive ions.3.All the metals form acidic oxides.4.All the metals are good conductor of heat.Question 13 of 20Question 14 of 20 14. The numbers of elements classified by Newlands in the periodic table are:1.852.923.384.62Question 14 of 20Question 15 of 20 15. In periodic table all the non-metals are placed under which of the blocks?1.f2.p3.d4.sQuestion 15 of 20Question 16 of 20 16. The elements of group Il-A are called.1.Alkali metals2.Alkaline earth metals3.metalloids4.Coinage metalsQuestion 16 of 20Question 17 of 20 17. Which statement is correct1.Hydrogen resembles in properties with IIA, IVA, and VIA elements2.Hydrogen resembles in properties with IIA. IIIA, and VITA elements.3.Hydrogen resembles in properties with IIIA, IVA, and VA elements.4.Hydrogen resembles in properties with IA, IVA, and VIIA elements.Question 17 of 20Question 18 of 20 18. Period 5 in modem periodic table contains how many elements:18.104.22.1684.8Question 18 of 20Question 19 of 20 19. Keeping in view the size of atoms, which order is the correct one?1.Lu > Ce2.Cl > I3.Mg > Sr4.Ba > MgQuestion 19 of 20Question 20 of 20 20. 6th period contains the number of elements22.214.171.124.32Question 20 of 20 Loading... Test By Subject Punjab Test By Topics 12th Class Chemistry You Can Learn and Gain more Knowledge through our Online Quiz and Testing system Just Search your desired Preparation subject at Gotest.