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MDCAT - UHS Past Papers - Chemistry - Chap No 9 Quiz

Attempt 10 MCQs on MDCAT - UHS Past Papers - Chemistry - Chap No 9 | Quiz 2

11. Which of the following elements has the smallest size?



12. Which of the following has the highest atomic radius in its period?



13. In metals, why does electric conductivity decrease with the increase of temperature?



14. Which oxyacid of halogen is a strong oxidizing agent?



15. What is the proton (atomic number) of an element that has four unpaired electrons in its ground state?



16. Which of the following has the smallest atomic radius?



17. The difference of lithium from the other alkali metals is mainly because of:



18. Graphite and diamond are allotropes of carbon. Diamond is a non-conductor whereas graphite is a good conductor because:



19. The diagram below is a plot of melting points of elements of second period against atomic numbers. Lithium and fluorine are placed at the extreme ends of the plot. Where will you place carbon among the empty slots of melting points?



20. What is the trend of melting and boiling point of the elements of a short period as we move from left to right in the periodic table?



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