ECAT 2016 Chemistry Portion

ECAT 2016 CHEMISTRY

1. In the alkaline battery the anode, the cathode and electrolyte are, respectively:
   

2. Lead acid batteries discharge with time because of:
   

3. A crystal system in which all axes are equal, but none of the angle 90° is:
   

4. Which of the electronic configuration of Nitrogen is correct?
   

5. Which of the following electronic configurations represents an element that forms a simple ion with a charge of – 3?
   

6. Complete the reaction:
   
   

7. To ensure that ethanol is not used for drinking purposes, it is converted to methylated spirit by adding:
   

8. Pickle ( Achaar in Urdu ) when placed in the path of current:
   

9. Steel is manufactured by Open Hearth process from:
   

10. Which of the following ions has more electrons than protons and more protons than neutrons?
    

11. Which of the following is NOT used as fertilizer:
    

12. Poly (tetra fluoroethene) is a polymer used as a coating in non-stick kitchen utensils and for replacement bone joints. One of the stages in the manufacture of polymer is: Which of the following conditions will shift this equilibrium to the right?
    

13. Balance the following reaction:
    
    
    
    

14. Ethanol can be prepared by fermenting the following in the presence of enzymes:
    

15. The periodic table provides a basic framework to study the periodic behavior of the physical and chemical properties of the:
    

16. The oxidation states of Boron are:
    

17. The atomic masses of sodium and chlorine are 23 and 35 respectively, 29 grams of sodium chlorine is equivalent to:
    

18. Potassium permanganate reacts with hydrogen sulphide (H₂S) to produce:
    

19. Benzene has an extraordinarily stable molecule because of:
    

20. Alkanes or paraffin’s are made up of:
    

21. The volume of a gas at 0^° C is 100 cm³. What will be the volume of the same gas at 546° C. assuming that pressure remains constant?
    

22. When water freezes, it occupies:
    

23. At Murree hills, water will boil at about:
    

24. The noble gases have:
    

25. The transition elements:
    

26. Potassium permanganate is:
    

27. The following functional group is present in both aldehydes and ketones:
    

28. The following is an alcohol:
    

29. Alkanes are non-polar or weakly polar compounds that are insoluble in:
    

30. Aqua Regia is formed when HCl and HNO₃ are mixed in the following ratio:
    

ANSWERS

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