Set of Chemistry CEE -2
Posted by Set of Chemistry CEE -2
1. Which of the following is not a property of acids?
a) Sour taste
b) Turns blue litmus paper red
c) Slippery feel
d) Reacts with metals to produce hydrogen gas
2. The charge on a proton is:
a) Negative
b) Positive
c) Neutral
d) Zero
3. What is the molar volume of an ideal gas at STP (Standard Temperature and Pressure)?
a) 22.4 L
b) 24.0 L
c) 10.0 L
d) 44.8 L
4. The bond angle in a tetrahedral molecule is:
a) 120°
b) 90°
c) 180°
d) 109.5°
5. Which of the following is an example of a covalent compound?
a) NaCl
b) K2O
c) CO2
d) MgCl2
6. What is the pH of a solution of 1 × 10⁻⁴ M HCl?
a) 1
b) 4
c) 7
d) 10
7. Which of the following compounds is used as a disinfectant in drinking water?
a) Chlorine
b) Ammonia
c) Nitrogen
d) Carbon dioxide
8. Which of the following is the most common form of carbon found in nature?
a) Graphite
b) Diamond
c) Charcoal
d) Fullerene
9. The rate of a chemical reaction is generally increased by:
a) Decreasing the temperature
b) Increasing the concentration of reactants
c) Decreasing the surface area of reactants
d) Decreasing the pressure
10. The number of moles in 5.6 L of hydrogen gas at STP is:
a) 0.25 mol
b) 1 mol
c) 2 mol
d) 22.4 mol
11. Which of the following is the strongest acid?
a) HCl
b) H2SO4
c) HNO3
d) CH3COOH
12. In which of the following types of reactions is a single product formed from two or more reactants?
a) Decomposition reaction
b) Combination reaction
c) Displacement reaction
d) Double displacement reaction
13. Which of the following is an example of an alkali metal?
a) Calcium
b) Magnesium
c) Sodium
d) Iron
14. What is the oxidation state of nitrogen in NH₃?
a) +3
b) +1
c) -3
d) 0
15. Which of the following has the highest electronegativity?
a) Sodium
b) Oxygen
c) Chlorine
d) Fluorine
16. Which of the following is a property of metals?
a) They are brittle
b) They are good conductors of electricity
c) They are poor conductors of heat
d) They have high ionization energies
17. The gas produced when hydrochloric acid reacts with zinc is:
a) Oxygen
b) Nitrogen
c) Carbon dioxide
d) Hydrogen
18. Which of the following compounds has a trigonal planar molecular geometry?
a) NH₃
b) H₂O
c) CO₂
d) BF₃
19. Which of the following is an example of a Lewis base?
a) BF₃
b) NH₃
c) CO₂
d) H₂O
20. The molecular formula of glucose is:
a) C6H12O6
b) C6H6O6
c) C5H10O5
d) C4H8O4
21. What is the IUPAC name for the compound CH₃-CH₂-OH?
a) Methanol
b) Ethanol
c) Propanol
d) Butanol
22. The electrons in an atom are arranged in:
a) Energy levels
b) Nuclei
c) Orbitals
d) Neutrons
23. Which of the following types of radiation has the greatest penetrating power?
a) Alpha radiation
b) Beta radiation
c) Gamma radiation
d) Ultraviolet radiation
24. Which of the following compounds is used in the preparation of artificial fertilizers?
a) Ammonia
b) Hydrogen chloride
c) Sodium hydroxide
d) Carbon monoxide
25. The formula of sulfuric acid is:
a) H₂SO₃
b) H₂SO₄
c) H₃SO₄
d) HSO₃
26. What is the main constituent of vinegar?
a) Acetic acid
b) Citric acid
c) Hydrochloric acid
d) Lactic acid
27. Which of the following is an example of a combustion reaction?
a) 2H₂ + O₂ → 2H₂O
b) NaCl → Na + Cl₂
c) CH₄ + 2O₂ → CO₂ + 2H₂O
d) 2Na + Cl₂ → 2NaCl
28. The structure of an atom is described by:
a) Dalton’s model
b) Thomson’s model
c) Rutherford’s model
d) Bohr’s model
29. Which of the following statements is true about catalysts?
a) They increase the activation energy of a reaction.
b) They are consumed in the reaction.
c) They decrease the rate of reaction.
d) They increase the rate of reaction without being consumed.
30. The element that has an atomic number of 11 is:
a) Sodium (Na)
b) Potassium (K)
c) Lithium (Li)
d) Calcium (Ca)
31. Which of the following has a higher melting point?
a) Sodium chloride
b) Nitrogen
c) Oxygen
d) Methane
32. The reaction between an acid and a carbonate produces:
a) Salt and water
b) Salt and carbon dioxide
c) Water and hydrogen
d) Hydrogen and oxygen
33. Which of the following compounds is known as "quicklime"?
a) CaO
b) CaCO₃
c) Ca(OH)₂
d) CaCl₂
34. Which of the following compounds is an example of a hydrocarbon?
a) CO₂
b) NaOH
c) CH₄
d) H₂SO₄
35. Which element is most likely to form a cation with a +1 charge?
a) Calcium
b) Sodium
c) Magnesium
d) Chlorine
36. In the reaction between sodium and chlorine, sodium:
a) Gains electrons
b) Loses electrons
c) Neither gains nor loses electrons
d) Forms a covalent bond
37. The mass number of an isotope is equal to the sum of the:
a) Protons and electrons
b) Electrons and neutrons
c) Protons and neutrons
d) Electrons only
38. Which of the following is a property of nonmetals?
a) They are good conductors of heat
b) They are ductile
c) They are brittle and non-conductive
d) They are malleable
39. The substance used to test for the presence of starch is:
a) Iodine solution
b) Benedict’s solution
c) Litmus paper
d) Silver nitrate solution
40. Which of the following elements is a noble gas?
a) Oxygen
b) Nitrogen
c) Argon
d) Chlorine
41. Which of the following is the chemical formula for ammonium sulfate?
a) (NH₄)₂SO₄
b) NH₄SO₄
c) (NH₄)₂SO₃
d) NH₃SO₄
42. Which of the following elements is in period 3 of the periodic table?
a) Lithium
b) Sodium
c) Magnesium
d) Chlorine
43. A solution that contains a large amount of solute compared to the solvent is called:
a) Dilute solution
b) Saturated solution
c) Concentrated solution
d) Supersaturated solution
44
. Which of the following compounds is a salt?
a) NaCl
b) NaOH
c) HCl
d) H₂SO₄
45. The molecule H₂O is:
a) Linear
b) Bent
c) Tetrahedral
d) Trigonal planar
46. Which of the following is the correct IUPAC name for CH₃-CH₂-COOH?
a) Methanoic acid
b) Propanoic acid
c) Butanoic acid
d) Ethanoic acid
47. Which of the following processes is an example of a physical change?
a) Burning paper
b) Melting ice
c) Cooking food
d) Rusting of iron
48. What is the name of the compound with the formula Na₂CO₃?
a) Sodium carbonate
b) Sodium bicarbonate
c) Sodium chloride
d) Sodium hydroxide
49. Which of the following is a property of a gas?
a) It has a definite shape and volume
b) Its molecules are closely packed
c) It expands to fill the container
d) It has a definite volume
50. The process in which a liquid changes into a gas is called:
a) Sublimation
b) Evaporation
c) Freezing
d) Condensation
Answer Key:
- c) Slippery feel
- b) Positive
- a) 22.4 L
- d) 109.5°
- c) CO2
- b) 4
- a) Chlorine
- a) Graphite
- b) Increasing the concentration of reactants
- b) 1 mol
- b) H2SO4
- b) Combination reaction
- c) Sodium
- c) -3
- d) Fluorine
- b) They are good conductors of electricity
- d) Hydrogen
- d) BF3
- b) NH3
- a) C6H12O6
- b) Ethanol
- a) Energy levels
- c) Gamma radiation
- a) Ammonia
- b) H2SO4
- a) Acetic acid
- c) CH₄ + 2O₂ → CO₂ + 2H₂O
- d) Bohr’s model
- d) They increase the rate of reaction without being consumed
- a) Sodium (Na)
- a) Sodium chloride
- b) Salt and carbon dioxide
- a) CaO
- c) CH₄
- b) Sodium
- b) Loses electrons
- c) Protons and neutrons
- c) They are brittle and non-conductive
- a) Iodine solution
- c) Argon
- a) (NH₄)₂SO₄
- c) Magnesium
- c) Concentrated solution
- a) NaCl
- b) Bent
- b) Propanoic acid
- b) Melting ice
- a) Sodium carbonate
- c) It expands to fill the container
- b) Evaporation
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