Question Set
Q11. The number of moles in twenty-two point four liters of carbon dioxide at standard temperature and pressure is
a) Zero point five
b) One
c) Two
d) One point five
Answer: b) One
a) Zero point five
b) One
c) Two
d) One point five
Answer: b) One
Q12. Which of the following is a strong electrolyte?
a) Urea
b) Glucose
c) Sodium chloride
d) Acetic acid
Answer: c) Sodium chloride
a) Urea
b) Glucose
c) Sodium chloride
d) Acetic acid
Answer: c) Sodium chloride
Q13. Which of the following has the highest ionization energy?
a) Sodium
b) Magnesium
c) Aluminum
d) Neon
Answer: d) Neon
a) Sodium
b) Magnesium
c) Aluminum
d) Neon
Answer: d) Neon
Q14. The pH of a neutral solution at twenty five degrees Celsius is
a) One
b) Seven
c) Fourteen
d) Zero
Answer: b) Seven
a) One
b) Seven
c) Fourteen
d) Zero
Answer: b) Seven
Q15. Which compound exhibits resonance?
a) Methane
b) Ethane
c) Benzene
d) Ethyne
Answer: c) Benzene
a) Methane
b) Ethane
c) Benzene
d) Ethyne
Answer: c) Benzene
Q16. Which of the following is used as an antiseptic?
a) Aspirin
b) Paracetamol
c) Iodine
d) Ether
Answer: c) Iodine
a) Aspirin
b) Paracetamol
c) Iodine
d) Ether
Answer: c) Iodine
Q17. The Avogadro number is approximately
a) Six point zero two into ten to the power twenty three
b) Three point zero one into ten to the power twenty three
c) Nine point zero three into ten to the power twenty three
d) One point zero two into ten to the power twenty three
Answer: a) Six point zero two into ten to the power twenty three
a) Six point zero two into ten to the power twenty three
b) Three point zero one into ten to the power twenty three
c) Nine point zero three into ten to the power twenty three
d) One point zero two into ten to the power twenty three
Answer: a) Six point zero two into ten to the power twenty three
Q18. Which metal is liquid at room temperature?
a) Sodium
b) Mercury
c) Aluminium
d) Zinc
Answer: b) Mercury
a) Sodium
b) Mercury
c) Aluminium
d) Zinc
Answer: b) Mercury
Q19. Which gas is released when an acid reacts with a metal carbonate?
a) Oxygen
b) Nitrogen
c) Carbon dioxide
d) Hydrogen
Answer: c) Carbon dioxide
a) Oxygen
b) Nitrogen
c) Carbon dioxide
d) Hydrogen
Answer: c) Carbon dioxide
Q20. Which of the following is not an allotrope of carbon?
a) Graphite
b) Diamond
c) Buckminsterfullerene
d) Quartz
Answer: d) Quartz
a) Graphite
b) Diamond
c) Buckminsterfullerene
d) Quartz
Answer: d) Quartz
Q21. Which of the following is not a noble gas?
a) Helium
b) Neon
c) Oxygen
d) Argon
Answer: c) Oxygen
a) Helium
b) Neon
c) Oxygen
d) Argon
Answer: c) Oxygen
Q22. Which of the following has the highest electronegativity?
a) Chlorine
b) Oxygen
c) Fluorine
d) Nitrogen
Answer: c) Fluorine
a) Chlorine
b) Oxygen
c) Fluorine
d) Nitrogen
Answer: c) Fluorine
Q23. Which of the following is used in water purification?
a) Baking soda
b) Washing soda
c) Bleaching powder
d) Quick lime
Answer: c) Bleaching powder
a) Baking soda
b) Washing soda
c) Bleaching powder
d) Quick lime
Answer: c) Bleaching powder
Q24. The atomic number of an element represents
a) Number of neutrons
b) Number of protons
c) Number of electrons
d) Both b and c
Answer: d) Both b and c
a) Number of neutrons
b) Number of protons
c) Number of electrons
d) Both b and c
Answer: d) Both b and c
Q25. Which of the following elements is a metalloid?
a) Silicon
b) Sulfur
c) Sodium
d) Iodine
Answer: a) Silicon
a) Silicon
b) Sulfur
c) Sodium
d) Iodine
Answer: a) Silicon
Q26. What is the color of copper sulfate solution?
a) Green
b) Blue
c) Yellow
d) Colorless
Answer: b) Blue
a) Green
b) Blue
c) Yellow
d) Colorless
Answer: b) Blue
Q27. Which one of the following is an example of an endothermic reaction?
a) Combustion of methane
b) Photosynthesis
c) Neutralization
d) Respiration
Answer: b) Photosynthesis
a) Combustion of methane
b) Photosynthesis
c) Neutralization
d) Respiration
Answer: b) Photosynthesis
Q28. Which gas is used in fire extinguishers?
a) Oxygen
b) Nitrogen
c) Carbon dioxide
d) Hydrogen
Answer: c) Carbon dioxide
a) Oxygen
b) Nitrogen
c) Carbon dioxide
d) Hydrogen
Answer: c) Carbon dioxide
Q29. The chemical formula of gypsum is
a) Calcium carbonate
b) Calcium sulfate dihydrate
c) Calcium hydroxide
d) Calcium oxide
Answer: b) Calcium sulfate dihydrate
a) Calcium carbonate
b) Calcium sulfate dihydrate
c) Calcium hydroxide
d) Calcium oxide
Answer: b) Calcium sulfate dihydrate
Q30. Rusting of iron is an example of
a) Decomposition
b) Redox reaction
c) Displacement
d) Precipitation
Answer: b) Redox reaction
a) Decomposition
b) Redox reaction
c) Displacement
d) Precipitation
Answer: b) Redox reaction