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Chemical Reactivity of Metals, Non-metals and Metalloids Solved MCQs

Chemical Reactivity of Metals, Non-metals & Metalloids


Chemical Reactivity


1. Which metal is commonly used in the commercial production of soap?

   a) Sodium  

   b) Calcium  

   c) Magnesium  

   d) All of the above


2. In the beverage industry, which metal is often used to soften water?

   a) Sodium  

   b) Calcium 

   c) Magnesium  

   d) Potassium


3. Which of the following metals is responsible for the "hardness" in water?

   a) Sodium  

   b) Calcium  

   c) Magnesium  

   d) Iron


4. Which metal is commonly used in the production of fireworks to give a bright, intense flame colour?

   a) Sodium  

   b) Calcium  

   c) Magnesium  

   d) Aluminum


5. In the food industry, which metal is often used as a reducing agent and leavening agent in baked goods?

   a) Sodium  

   b) Calcium  

   c) Magnesium  

   d) Zinc


6. Which metal is commonly used in electrical wiring due to its high conductivity?

   a) Aluminum  

   b) Copper  

   c) Iron  

   d) Zinc


7. Which non-metal is essential for life and forms the basis of organic molecules?

   a) Oxygen  

   b) Nitrogen  

   c) Carbon  

   d) Hydrogen


8. Which metalloid is used in the semiconductor industry for making electronic components?

   a) Silicon  

   b) Boron  

   c) Arsenic  

   d) Selenium


9. Which metal is primarily used in the production of stainless steel?

   a) Iron  

   b) Nickel  

   c) Chromium  

   d) Aluminum


10. What non-metal is commonly used in the production of fertilizers and explosives?

   a) Phosphorus  

   b) Sulfur  

   c) Fluorine  

   d) Chlorine


11. What property distinguishes soft metals from hard metals?

   a) Conductivity

   b) Ductility

   c) Density

   d) Hardness


12. Which of the following metals is generally considered a soft metal?

   a) Iron

   b) Lead

   c) Titanium

   d) Nickel


13. What is the primary characteristic of hard metals?

   a) Low melting point

   b) High density

   c) Brittle nature

   d) Low conductivity


14. Which alloy is known for its hardness and is commonly used in making cutting tools?

   a) Brass

   b) Bronze

   c) Steel

   d) Tungsten carbide


15. Soft metals are often preferred for applications requiring:

   a) Strength

   b) Malleability

   c) Corrosion resistance

   d) High melting points


16. Which metal is renowned for being both soft and having excellent conductivity?

   a) Aluminum

   b) Zinc

   c) Gold

   d) Chromium


17. The hardness of a metal is generally associated with its:

   a) Atomic mass

   b) Crystal structure

   c) Electrical conductivity

   d) Thermal expansion coefficient


18. In the context of metals, what does the term "work-hardening" refer to?

   a) Increasing ductility

   b) Reducing conductivity

c) Enhancing hardness through deformation

   d) Lowering melting point


19. Which metal is commonly used for its softness in plumbing applications?

   a) Copper

   b) Silver

   c) Aluminum

   d) Mercury


20. Hard metals are often utilized in manufacturing processes where:

   a) Precision cutting is required

   b) Flexibility is essential

   c) Low density is preferred

   d) Electrical conductivity is crucial


21. What trend is observed in the ionization energy of alkali metals down a group?

   a) Increases

   b) Decreases

   c) Remains constant

d) Sometimes increases and sometimes decreases 


22. Which alkali metal has the highest ionization energy?

   a) Lithium

   b) Sodium

   c) Potassium

  d) all have equal energy 


23. Among alkaline earth metals, which element has the highest ionization energy?

   a) Beryllium

   b) Magnesium

   c) Calcium

   d) None of them 


24. What trend is observed in the ionization energy of alkaline earth metals down a group?

   a) Increases

   b) Decreases

   c) Remains constant

  d) Changes invariably 


25. Compared to alkali metals, alkaline earth metals generally have:

   a) Higher ionization energy

   b) Lower ionization energy

   c) Similar ionization energy

    d) None of them 


26. What is the common oxidation state of alkali metals?

   a. +1

   b. +2

   c. -1

   d. 0


27. Which alkali metal is the most reactive?

   a. Lithium

   b. Sodium

   c. Potassium

   d. Rubidium


28. Alkali metals react vigorously with water to produce:

   a. Hydrogen gas

   b. Oxygen gas

   c. Nitrogen gas

   d. Carbon dioxide


29. What is the common oxidation state of alkaline earth metals?

   a. +1

   b. +2

   c. -1

   d. 0


30. Which alkaline earth metal is commonly found in bones and teeth?

   a. Magnesium

   b. Calcium

   c. Strontium

   d. Barium


31. Alkaline earth metals are generally ..................... compared to alkali metals.

   a. Reactive

   b. Less reactive

   c. Highly reactive 

   d) None of them 


32. Which is the primary characteristic used to classify elements as metals?

a) High electronegativity  

b) Ability to conduct electricity  

c) Presence of a gaseous state  

d) Brittle nature


33. Which of the following elements is a metalloid?

a) Sodium (Na)  

b) Silicon (Si)  

c) Chlorine (Cl)  

d) Fluorine (F)


34. Which group of elements is typically found on the right side of the periodic table and exhibits non-metallic properties?

a) Alkali metals  

b) Halogens  

c) Transition metals  

d) Noble gases


35. What property is associated with the classification of metalloids?

a) Malleability  

b) Ability to conduct electricity  

c) Intermediate properties of metals and non-metals  

d) High melting point


36. What is a defining characteristic of metals in terms of chemical reactivity?

a) They tend to gain electrons  

b) They tend to lose electrons  

c) They neither gain nor lose electrons

d) They tend to gain Protons


37. Which element is a typical non-metal based on its chemical reactivity?

a) Sodium  

b) Chlorine  

c) Aluminum

d) Bromine  


38. What is the primary characteristic of metalloids regarding chemical reactivity?

a) They always lose electrons  

b) They have properties of both metals and non-metals  

c) They are inert and do not react  

d) None of them 


39. In chemical reactions, metals generally form:

a) Positive ions (cations)  

b) Negative ions (anions)  

c) Neutral atoms  

d) None of them 


40. Which of the following is a metalloid known for its semiconductor properties?

a) Silicon  

b) Oxygen  

c) Sodium

d) Chlorine  


41. What is the chemical reactivity of metalloids?

a) Highly reactive

b) Moderately reactive

c) Low reactivity

d) Varied reactivity


42. Which metalloid exhibits a tendency to form covalent compounds rather than purely metallic ones?

a) Boron

b) Silicon

c) Arsenic

d) Tellurium


43. Which metalloid is known for its semiconducting properties and is widely used in electronics?

a) Germanium

b) Antimony

c) Selenium

d) Polonium


44. How do metalloids generally behave in terms of conducting electricity?

a) Good conductors

b) Insulators

c) Semiconductors

d) Superconductors


45. Which metalloid is commonly used in the production of glass and as a semiconductor in solar cells?

a) Boron

b) Silicon

c) Arsenic

d) Tellurium


46. What is the general trend in the chemical reactivity of nonmetals as you move across a period in the periodic table?

   a. Increases

   b. Decreases

   c. Remains constant

  d. Changes invariably 


47. Which nonmetal is known for its high reactivity and tendency to form compounds with many elements?

   a. Oxygen

   b. Fluorine

   c. Nitrogen

   d. Chlorine 


48. When nonmetals react with metals, which type of compound is typically formed?

   a. Ionic compound

   b. Covalent compound

   c. Metallic compound

   d. Non metallic compound


49. Which nonmetal is essentially used in archeology and forensic science?

   a. Nitrogen

   b. Carbon

   c. Sulfur

  d. Nitrogen 


50. Which nonmetal is commonly used in the semiconductor industry and is a crucial component of electronic devices?

   a. Silicon

   b. Phosphorus

   c. Chlorine

   d. Fluorine 


51. In the reaction between a nonmetal and oxygen, what type of compound is usually formed?

   a. Oxide

   b. Hydride

   c. Chloride

   d. Fluoride 


52. Which nonmetal is a major component of Earth's atmosphere and is essential for respiration in living organisms?

   a. Nitrogen

   b. Oxygen

   c. Hydrogen

  d. Carbon dioxide 


53. What happens to the reactivity of nonmetals as you move down a group in the periodic table?

   a. Increases

   b. Decreases

   c. Remains constant

  d. Changes invariably 


54. Which metal reacts vigorously with water to produce hydrogen gas and metal hydroxide?

   a) Copper

   b) Iron

   c) Sodium

   d) Gold


55. What is the general trend in reactivity of alkali metals as you move down the group?

   a) Reactivity decreases

   b) Reactivity increases

   c) Reactivity remains constant

   d) Reactivity fluctuates


56. Which metal is known for not reacting with most acids and bases?

   a) Aluminium

   b) Zinc

   c) Platinum

   d) Calcium


57. When metals react with acids, they produce:

   a) Water only

   b) Salt and water

   c) Hydrogen gas and salt

   d) Carbon dioxide


58. Which metal is commonly used as a sacrificial anode to protect other metals from corrosion?

   a) Lead

   b) Zinc

   c) Silver

   d) Nickel


59. What is the term for the minimum energy required to initiate a chemical reaction?

   a) Activation energy

   b) Reaction energy

   c) Heat of reaction

   d) Threshold energy


60. Which factor primarily determines the rate of a chemical reaction?

   a) Temperature

   b) Pressure

   c) Volume

   d) Density


61. In a redox reaction, which substance undergoes reduction?

   a) Oxidizing agent

   b) Reducing agent

   c) Catalyst

   d) Solvent


62. What does the term "catalyst" refer to in a chemical reaction?

   a) A substance that initiates a reaction

   b) A substance that slows down a reaction

c) A substance that increases the rate of a reaction without being consumed

d) A substance that increases the activation energy


63. Which type of reaction involves the combination of a substance with oxygen, often producing heat and light?

   a) Substitution reaction

   b) Combustion reaction

   c) Synthesis reaction

   d) Decomposition reaction


64. What is the role of enzymes in biological reactions?

   a) Increase activation energy

   b) Inhibit reactions

   c) Act as catalysts to speed up reactions

   d) Only participate in synthesis reactions


65. Which factor influences the equilibrium position of a chemical reaction?

a) Initial concentration of reactants and products

   b) Temperature only

   c) Pressure only

   d) Catalyst presence


66. What is the product of the neutralization reaction between an acid and a base?

   a) Salt and water

   b) Gas and solid

   c) Acid and base

   d) Metal and non-metal


67. In a spontaneous reaction, what happens to the Gibbs free energy?

   a) Increases

   b) Decreases

   c) Stays constant

   d) Becomes zero


68. Which law states that the total mass of substances involved in a chemical reaction remains constant?

   a) Law of conservation of energy

   b) Law of conservation of mass

   c) Boyle's law

   d) Avogadro's law


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