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CHEMISTRY SOLVED MCQs

Chemistry Solved MCQs

1. Water is oxidized to oxygen by_____________.

a. H2O2          

b. KMnO4       

c.ClO2               

d. fluorine


2. Oxygen does not react with;

a. Na           

b. P            

c. Cl                 

d. S


3. A variety of water which contains soluble salts of Ca and Mg is known as;

a. soft water           

b. heavy water        

c. conductivity water          

d. hard water


4. 10. Which one of the following substances has the highest proton affinity?

a. NH3          

b. H2O        

c. PH3           

d. H2S


5. The gas O3 (ozone) cannot oxidise;

a. KI      

b. FeSo4     

c. KMnO4     

d. K2MnO4


6. sp2 hybridization is present in;

a. C2H2        

b. C2H4        

c .BeCl2      

d. C2H6


7. Bond angle of 120° is found in

a. PH3         

b. NCl3         

c. ClF3         

d. BCl3


8. Out of Alkane, Alkene & Alkyne, which one is more acidic?

a. Alkane      

b. Alkene        

c. Alkyne            

d. All of them


9. Atomic mass of an atom is present in the __________?

a. Shell    

b. Orbit    

c. Nucleus   

d. Orbital


10. One Water molecule can form maximum ______hydrogen bonds.

a. 1           

b. 2              

c. 3                 

d. 4


11. Cations possess __________ charge?

a. +ve   

b. –ve   

c. Neutral   

d. No charge


12. In a water molecule, Hydrogen & water are held together by ______ bond.

a. Ionic    

b. Covalent     

c. Hydrogen            

d. Dating


13. Positron has __________charge.

a. +ve      

b. –ve    

c. Neutral     

d. No charge


14. The only non-metal exists in liquid state is ___________?

a. Mercury      

b. Bromine    

c. Phosphorus  

d. Iodine


15. The quality of petrol is improved by ____________?

a. Cracking    

b. Reforming   

c. Refining      

d. Hydration


16. Which of the following one is a pure carbon?

a. Coal Tar   

b. Coal gas  

c. Coke    

d. Stone


17. Cathode is a metallic plate where__________ takes place.

a. Oxidation   

b. Reduction      

c. Redox        

d. Substitution


18. In the electrolysis of aqueous Sodium Flouride, the species that moves towards Anode is _________?

a. Flouride     

b. Sodium     

c. H2O     

d. CH4


19. The quantity of petrol can be increased by ___________?

a. Reforming      

b. Induction fueling             

c. Cracking            

d. Refining


20. The product on the oxidation of 2°Alcohol is ________?

a. Aldehyde       

b. Ketone                              

c. Carboxylic acid              

d. Ester


21. In water, Hydrogen is present ________by mass.

a. 11.11%     

b. 33.31%     

c. 31.13%               

d. 15.15%


22. Almost 70% of the universe is made up of __________?

a. Helium       

b. Hydrogen     

c. Oxygen     

d. Carbon


23. In a Dry cell, cathode is made up of_______.

a. Zinc          

b. Carbon (Graphite)              

c. ZnCl²         

d. MnO² (Pyrolusite)


24. Another name of the Marsh gas is _________.

a. Methane             

b. Ethane                         

c. Hydrogen            

d. Nitrogen


25. Which of the following is the radioactive isotope of Hydrogen?

a. Protium               

b. Deuterium                  

c. Tritium               

d. Nichromium


26. The shielding Effect across the period __________.

a. Increases            

b. Decreases                    

c. Remains the same    

d. Increases & decreases


27. d-block elements are also called as __________ elements.

a. Inner Transition    

b. Outer Transition     

c. Alkali Metals        

d. Both B & C


28. The Electronegativity of Hydrogen is _____.

a. 2.8          

b. 2.2           

c. 3.1            

d. 1.8


29. The Ionization energy of Hydrogen is __________.

a. 10.54ev  

b. 12.54ev   

c. 13.6ev   

d. 15.6ev


30. Which of the following is a non-spontaneous cell?

a. Electrolytic cell      

b. Galvanic cell        

c. Daniel cell            

d. Dry cell


31. The equation that represents the relationship of Faraday’s first law of electrolysis is _______.

a. Z=At                   

b. w=ZAt                            

c. w=Z/At                

d. Z= At/M


32. Black foot disease is caused by the pollution of groundwater as a consequence of increased seepage of__________.

a. Nitrates               

b. Fluorides                     

c. Arsenic              

d. Mercury


33. Which one of the following radiation has the longer wavelength?

a. infra-red             

b. gamma rays               

c. x-ray                   

d. ultra violet


34. Which of the following processes is involved in the Bosch Process?

a. Reduction            

b. Oxidation                  

c. Isomerization       

d. Crackling


35. Milk tastes sour when kept in the open for some time due to the formation of __________.

a. lactic acid           

b. citric acid                   

c. acetic acid           

d. carbonic acid


36. The radio-active element that is used in heart pacemakers is;

a. Uranium              

b. Deuterium                 

c. Plutonium 

d. Radium


37. The source of the Sun’s energy is the process of ____________.

a. Photoelectric emission                              

b. Nuclear fission                                            

c. Nuclear fusion                                         

d. Thermionic emission


38. Atom is the smallest particle which is_________.

a. Indivisible           

b. Divisible                    

c. Both  of them        

d. None of them


39. __________ is actually the allotropic modifications of carbon.

a. Silicon                 

b. Diamond                    

c. Iodine        

d. Graphite


40. When the radiation of light is passed through a prism, it undergoes __________.

a. reflection             

b. interference               

c. diffraction            

d. refraction


41. The radiations with highest speed are _______.

a. Alpha radiations                                         

b. Gamma radiations                                  

c. Beta radiations                                            

d. All of them


42. Word Chemistry has been taken from the ……language.

a. Latin    

b. English  

c. Arabic     

d. Greek


43. A metallic atom loses its valence electron to form a/an _________.

a. anion                   

b. cation                          

c. anion – cation      

d. none of them​


44. An acid-Base Reaction is always a/an __________ reaction.

a. Endothermic        

b. Exothermic             

c. Fission                

d. Fusion


45. What is the Boiling Point of Ethyl Alcohol?

a. 78°C    

b. 58°C    

c. 73°C       

d. 56°C


46. The process by which solid changes directly into vapours without passing through liquid state is called;

a. Decantation         

b. Sublimation            

c. Evaporation         

d. Decomposition


47. Which one of the following serve as aquatic solar fuel cell?

a. Bacteria    

b. Virus   

c. Fungi      

d. Algae


48. Polyamides are synthetic polymers commonly known as___________.

a. synthetic             

b. Protein                         

c. Cellulose             

d. Nylon


49. The pH of milk is_______.

a. 6.0 – 6.5             

b. 6.5 – 7.0                         

c. 7.0 – 7.5             

d. 7.5 – 8.0


50. The element that used for the formation of alloys is__________.

a. Iron                     

b. Calcium                        

c. Mercury              

d. Chromium


51. Which gas is used for artificial ripening of green fruit?

a. Carbon dioxide    

b. Acetylene                  

c. Ethane                

d. Ethylene


52. Which of the following molecules have stronger London dispersion forces?

a. Hydrogen gas      

b. Water                        

c. Bromine              

d. Hydrochloric acid


53. Which of the following is the most Viscous?

a. Glycerin    

b. Milk    

c. Honey     

d. Spirit


54. Which one of the following is artificial and manmade fiber?

a. Boron                  

b. Saffron                         

c. Rayon                

d. All of them


55. Carbon, Diamond and Graphite altogether are called___________.

a. Allotropes          

b. Isomers                       

c. Isomorphs           

d. Isotopes


56. What the metal bearing rocks are called?

a. Bitumen               

b. Bauxite                       

c. Metalloids            

d. Ores


57. The process that is used to separate insoluble particles from liquids is called;

a. Drying                 

b. Filtration                   

c. Sieving      

d. Extraction


58. In the entire Periodic Table, which element is the most Reducing Agent?

a. Chlorine              

b. Lithium                      

c. Helium       

d. Neon


59. How many isomeric aldoses are possible for the molecular formula of glucose (C6H12O6)?

a. 6            

b. 8            

c. 12             

d.16


60. A helium nucleus comprising of two protons and two neutrons with a charge of 2e is _________.

a. Beta particle        

b. Gamma particle       

c. Alpha particle     

d. Negative particle


Further Chemistry Related Solved MCQs as Suggestrd Reading 

1. Fundamentals of Chemistry Solved MCQs 

2. Fundamentals of Chemistry Short Notes 

3. Matter in Chemistry Solved MCQs 

4. Chemical Bonding Solved MCQs 

5. Acids, Bases & Salts Solved MCQs 

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Location: Larkana, Sindh, Pakistan

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