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Chapter No.8-Chemical Reactivity
Multiple Choice Questions, Fill In The Blanks And Concept Map
SECTION- A: MULTIPLE CHOICE QUESTIONS
Tick Mark (✓) the correct answer
1. Which one metal belongs to Alkaline earth metal?
(a) B
(b) Bi
(c) Br
(d) Ba ✓
2. Which one is Barium:
(a) Bi
(b) Be
(c) Ba ✓
(d) Br
3. Chlorine can be displaced by _____.
(a) F ✓
(b) Br
(c) I
(d) At
4. Which one is strong acid?
(a) HF
(b) HCl
(c) HBr
(d) HI ✓
5. Which Halogen exists in liquid state?
(a) F2
(b) CI2
(c) Br2 ✓
(d) I2
6. Non-metals of ____ group are gases.
(a) VI-A
(b) VII-A
(c) VIII-A ✓
(d) VIII-B
7. Which one is Metalloid?
(a) Br
(b) Se
(c) S
(d) Sr
(Note: Non of the above is metalloid. Boron (B), Silicon (Si), Germanium (Ge), Arsenic (As), Antimony (Sb), Tellurium (Te), Polonium (Po) and Astatine (At) are metalloids.
8. Which one of the following act as oxidizing agent?
(a) Be
(b) Mg
(c) Na
(d) Cl ✓
9. Which gas can turn lime water milky?
(a) O2
(b) NO2
(c) CO2 ✓
(d) N2
10. Which compound is known as lunar caustic?
(a) KNO3
(b) AgNO3 ✓
(c) NaOH
(d) NaNO3
11. The property of substance to undergo chemical reaction with any material is called:
(a) electrochemistry
(b) chemical reactivity ✔
(c) chemical bonding
(d) chemical equilibrium
12. Reactivity of metals depends upon its tendency to:
(a) lose electron ✔
(b) accept electron
(c) lose proton
(d) accept proton
13. Reactivity of non-metals depends upon its tendency to:
(a) lose electron
(b) accept electron ✔
(c) lose proton
(d) accept proton
14. The most abundant element found in air is:
(a) oxygen
(b) argon
(c) hydrogen
(d) nitrogen ✔
15. Most abundant elements found in earth's crust are:
(a) Silicon, Aluminium, Oxygen
(c) Oxygen, Silicon, Aluminium
(b) Oxygen, Aluminium, Silicon ✔
(d) Silicon, Aluminium, Oxygen
16. The most abundant element found in the universe is:
(a) helium
(b) hydrogen ✔
(c) oxygen
(d) carbon
17. Most abundant elements found in human body are:
(a) Oxygen, Carbon, Hydrogen ✔
(c) Carbon, Hydrogen, Oxygen
(c) Carbon, Oxygen, Hydrogen
(d) Oxygen, Hydrogen, Carbon
18. The element which readily loses electron and easily form cation is termed as:
(a) non-metal
(b) metal ✔
(c) gas
(d) liquid
19. All B group elements are metals and known as:
(a) alkali metals
(b) alkaline earth metals
(c) chemical bonding
(d) chemical equilibrium
12. Reactivity of metals depends upon its tendency to:
(a) lose electron ✔
(b) accept electron
(c) lose proton
(d) accept proton
13. Reactivity of non-metals depends upon its tendency to:
(a) lose electron
(b) accept electron ✔
(c) lose proton
(d) accept proton
14. The most abundant element found in air is:
(a) oxygen
(b) argon
(c) hydrogen
(d) nitrogen ✔
15. Most abundant elements found in earth's crust are:
(a) Silicon, Aluminium, Oxygen
(c) Oxygen, Silicon, Aluminium
(b) Oxygen, Aluminium, Silicon ✔
(d) Silicon, Aluminium, Oxygen
16. The most abundant element found in the universe is:
(a) helium
(b) hydrogen ✔
(c) oxygen
(d) carbon
17. Most abundant elements found in human body are:
(a) Oxygen, Carbon, Hydrogen ✔
(c) Carbon, Hydrogen, Oxygen
(c) Carbon, Oxygen, Hydrogen
(d) Oxygen, Hydrogen, Carbon
18. The element which readily loses electron and easily form cation is termed as:
(a) non-metal
(b) metal ✔
(c) gas
(d) liquid
19. All B group elements are metals and known as:
(a) alkali metals
(b) alkaline earth metals
(c) transition metals ✔
(d) rare metals
20. Elements of group IA are called:
(a) alkali metals ✔
(b) alkaline earth metals
(c) transition metals
(d) rare metals
21. Elements of group IIA are called:
(a) alkali metals
(b) alkaline earth metals ✔
(c) transition metals
(d) rare metals
22. It is a light, strong and highly toxic metal.
(a) Bi
(b) Be ✔
(c) Ba
(d) Br
23. The most abundant metal is:
(a) iron
(b) gold
(c) copper
(d) aluminum ✔
24. The most reactive metal is:
(a) Fe
(b) Al
(c) Cs ✔
(d) Li
25. The lightest metal is:
(a) Al
(b) Cs
(c) Os
(d) Li ✔
26. The heaviest metal is:
(a) Al
(b) Cs
(c) Os ✔
(d) Li
27. Due to this property metals easily lose their valence shell electrons.
(a) Electro positivity ✔
(b) Electronegativity
(c) Electron affinity
(d) Ionization energy
28. Positively charged ion is known as:
(a) cathode
(b) anode
(c) cation ✔
(d) anion
29. Electropositive character of metals:
(a) decreases down the group
(d) rare metals
20. Elements of group IA are called:
(a) alkali metals ✔
(b) alkaline earth metals
(c) transition metals
(d) rare metals
21. Elements of group IIA are called:
(a) alkali metals
(b) alkaline earth metals ✔
(c) transition metals
(d) rare metals
22. It is a light, strong and highly toxic metal.
(a) Bi
(b) Be ✔
(c) Ba
(d) Br
23. The most abundant metal is:
(a) iron
(b) gold
(c) copper
(d) aluminum ✔
24. The most reactive metal is:
(a) Fe
(b) Al
(c) Cs ✔
(d) Li
25. The lightest metal is:
(a) Al
(b) Cs
(c) Os
(d) Li ✔
26. The heaviest metal is:
(a) Al
(b) Cs
(c) Os ✔
(d) Li
27. Due to this property metals easily lose their valence shell electrons.
(a) Electro positivity ✔
(b) Electronegativity
(c) Electron affinity
(d) Ionization energy
28. Positively charged ion is known as:
(a) cathode
(b) anode
(c) cation ✔
(d) anion
29. Electropositive character of metals:
(a) decreases down the group
(b) increases down the group ✔
(c) decreases up the group
(d) None of these
30. They have large atomic size and low ionization potential values:
(a) Alkali metals ✔
(c) Transition metals
(b) Alkaline earth metals
(d) Non-metals
31. The valence shell electronic configuration of alkali metals is:
(a) ns1 ✔
(b) np1
(c) ns2
(d) np2
32. Alkali earth metals form:
(a) monovalent anion
(c) monovalent cation
(b) divalent anion ✔
(d) divalent cation
33. The valence shell electronic configuration of alkaline earth metals is:
(a) ns1
(b) np1
(c) ns2 ✔
(d) np2
(c) decreases up the group
(d) None of these
30. They have large atomic size and low ionization potential values:
(a) Alkali metals ✔
(c) Transition metals
(b) Alkaline earth metals
(d) Non-metals
31. The valence shell electronic configuration of alkali metals is:
(a) ns1 ✔
(b) np1
(c) ns2
(d) np2
32. Alkali earth metals form:
(a) monovalent anion
(c) monovalent cation
(b) divalent anion ✔
(d) divalent cation
33. The valence shell electronic configuration of alkaline earth metals is:
(a) ns1
(b) np1
(c) ns2 ✔
(d) np2
34. The removal of electron from an element requires energy which is known as:
(a) Electro positivity
(b) Electronegativity
(c) Electron affinity
(d) Ionization energy ✔
35. With increasing atomic size, ionization energy values:
(a) increases
(b) decreases ✔
(c) remains the same
(d) becomes zero
36. It is sixth most abundant element and constitutes 2.87% of earth's crust.
(a) Sodium ✔
(b) Silicon
(c) Carbon
(d) Hydrogen
37. It is silvery white alkali metal which is so soft that it can be cut with knife.
(a) Lithium
(b) Cesium
(c) Sodium ✔
(d) Barium
38. Chemical formula of baking soda is:
(a) Na2CO3
(b) NaNO3
(c) NaCl
(d) NaHCO3 ✔
39. It is 8th most abundant element found in earth's crust.
(a) Sodium
(b) Magnesium ✔
(c) Carbon
(d) Calcium
40. Magnesium belongs to:
(a) I A group
(b) II A group ✔
(c) III A group
(d) IV A group
41. It is used in flares and photographic flash bulbs.
(a) Magnesium ✔
(b) Sodium
(c) Calcium
(d) Iridium
42. It is 5th abundant metal in earth's crust. It belongs to IIA group and 4th period.
(a) Magnesium
(b) Sodium
(c) Calcium ✔
(d) Lithium
43. It is essential for healthy teeth and bones.
(a) Sodium
(b) Magnesium
(c) Potassium
(d) Calcium ✔
44. Chemical formula of gypsum is:
(a) Ca(OH)2
(b) 2CaSO4.H2O ✔
(c) CaOCl2
(d) CaCO3
45. CaCO3 is the chemical formula of:
(a) slaked lime
(b) calcium tungstate
(c) Soda ash
(d) Limestone ✔
46. Noble metals are difficult to oxidize because they are:
(a) less electropositive ✔
(b) more electropositive
(c) less electronegative
(d) more electronegative
47. It is the only metal found in a liquid state.
(a) Platinum
(b) Osmium
(c) Mercury ✔
(d) Palladium
48. Which of the following forms alloys with other metals which are known as amalgam?
(a) Platinum
(b) Mercury ✔
(c) Sodium
(d) Silver
49. The only non-metal found in liquid state is:
(a) Xenon
(b) Selenium
(c) Mercury
(d) Bromine ✔
50. Halogen belongs to group:
(a) VA
(b) VIA
(c) VII A ✔
(d) VIII A
FILL IN THE BLANKS:
- Metals have greater tendency to lose electron.
- Non-metals have greater tendency to accept electron.
- The property of substance to undergo chemical reaction with any material is called chemical reactivity.
- Oxides of metals are basic.
- Oxides of metals produce basic solution with water.
- Oxides of Non-metals are Acidic.
- Oxides of Non-metals form Acidic solution with water.
- Ionization Energy decreases down the group.
- Electro positivity increases down the group.
- Group I-A elements are called Alkali Metals.
- Group II-A elements are called Alkaline earth metals.
- Metals of Group I-A, II-A are powerful reducing agents.
- Noble metals like Platinum, Silver, Gold etc are difficult to oxidize.
- VII-A group elements are Non-metals and act as oxidizing agents.
- VII-A group elements are known as Halogens.
- Halogen reacts with metals and form salt.
- Elements of group VIIIA are non-metals and consist of gases.
- Metalloids are elements which have properties intermediate between metals and Non-Metal elements.
- B, Si, Ge, As, Sb, Te are metalloids.
- Beryllium (Be) is a light strong and highly toxic metal.
- Beryllium small grain of 0.25 mg can kill a rat.
- Most abundant metal is aluminum (Al).
- Most useable metal is iron (Fe).
- Most reactive metal is cesium (Cs).
- The lightest metal is lithium (Li).
- The heaviest metal is osmium (Os).
- Most malleable, ductile metals are gold (Au) and silver (Ag).
- Mercury (Hg) is the only metal found in liquid state.
- Tin amalgam is an alloy of tin and mercury.
- Bromine (Br) is the only non-metal found in liquid state.
- Fluorine gas is a yellow color nonmetal.
- Chlorine gas is a green non-metal.
- Iodine is a lustrous purple color nonmetal.
- Diamond is hardest non-metal.
Common compounds with their chemical names and formulas
Common Name | Chemical name | Formula |
---|---|---|
Soda Ash | Sodium carbonate | Na2CO3 |
Baking Soda | Sodium bicarbonate | NaHCO3 |
Table Salt | Sodium chloride | NaCl |
Chile saltpeter | Sodium Nitrate | NaNO3 |
Slaked lime | Calcium hydroxide | Ca(OH)2 |
Gypsum | calcium sulphate dihydrate | 2CaSO4.H2O |
Bleaching powder | Calcium hypochlorite | Ca(OCl)2 |
Limestone | Calcium carbonate | CaCO3 |
Lime | Calcium oxide | CaO |
Lunar caustic | Silver Nitrate | AgNO3 |
Dry ice | Solid Carbon dioxide | CO2 (s) |
Aurum | Gold | Au |
Argentum | Silver | Ag |
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