This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Science > Acids > Class 7 Science Chapter 4 Acids – Quiz 7 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 4 Acids Quiz 7 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the sequence of amino acids that will be translated from the mRNA below?5' UGC GAU ACG GAA 3' A) Tryptophan-Aspartic Acid-Threonine-Glutamic Acid. B) Cysteine-Aspartic Acid-Threonine-Glutamic Acid. C) Cysteine-Glutamic Acid-Threonine-Glutamic Acid. D) Tryptophan-Glutamic Acid-Threonine-Aspartic Acid. Show Answer Correct Answer: B) Cysteine-Aspartic Acid-Threonine-Glutamic Acid. 2. What does the pH scale measure? A) The concentration of acids and bases. B) The malleability of a metal. C) The temperature of the water in a swimming pool. D) The amount of phosphorus in a compound. Show Answer Correct Answer: A) The concentration of acids and bases. 3. Products of a neutralisation reaction are always A) An acid and a base. B) An acid and a salt. C) Salt and water. D) Salt and base. Show Answer Correct Answer: C) Salt and water. 4. Select the correct pair of words that fits into this sentence ..... are corrosive substances characterized as having a strong smell, a sour taste, and a ..... A) Acids; pH greater than 7. B) Bases; pH greater than 7. C) Acids; pH less than 7. D) Bases; pH less than 7. Show Answer Correct Answer: C) Acids; pH less than 7. 5. What methods can you use to measure the pH of a solution? A) Measuring mass or volume. B) Using acid base-indicators or pH meters. C) Measuring density or electrical conductivity. D) Observing color or clarity. Show Answer Correct Answer: B) Using acid base-indicators or pH meters. 6. Name the acid with the formula, H$_{2}$SeO$_{4}$? A) Selenic acid. B) Selenate acid. C) Selenous acid. D) Selenite acid. Show Answer Correct Answer: A) Selenic acid. 7. How does base tastes A) Bitter. B) Sweet. C) Salty. D) Sour. Show Answer Correct Answer: A) Bitter. 8. In which scenario given could a weak acid have a lower pH than a strong acid? A) A significantly diluted weak acid is compared to a highly concentrated strong acid. B) A significantly diluted strong acid is compared to a highly concentrated weak acid. C) A highly concentrated weak acid is compared to a highly concentrated strong acid. D) A significantly diluted weak acid is compared to a significantly diluted strong acid. Show Answer Correct Answer: B) A significantly diluted strong acid is compared to a highly concentrated weak acid. 9. Sulfuric (H$_{2}$SO$_{4}$) is a A) Weak Acid. B) Strong base. C) Weak Base. D) Strong Acid. Show Answer Correct Answer: D) Strong Acid. 10. Which of the following is a weak acid?(a) Hydrochloric Acid(b) Nitric Acid(c) Acetic Acid(d) Sulphuric Acid A) A. B) B. C) D. D) C. Show Answer Correct Answer: D) C. 11. When acids react with metals, they produce hydrogen gas and salt. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 12. Which of the following is the weakest base? A) Blood-7.4. B) Oven cleaner-13.5. C) Soap-10. D) Lemon juice-2.5. Show Answer Correct Answer: A) Blood-7.4. 13. Forms hydronium ions in water. A) Acids. B) Bases. C) All. D) None of the above. Show Answer Correct Answer: A) Acids. 14. Which of the following substances would be most basic? A) PH = 10. B) PH = 7. C) PH = 2. D) PH = 9. Show Answer Correct Answer: A) PH = 10. 15. Hydrophobic amino acid side chains are A) Forced to go to outside of protein. B) Electrically negative. C) Electrically positive. D) Electrically neutral and nonpolar. Show Answer Correct Answer: D) Electrically neutral and nonpolar. 16. Accepts a pair of electrons A) Lewis Acid. B) Arrhenius Acid. C) Arrhenius Base. D) Bronsted Lowry Acid. Show Answer Correct Answer: A) Lewis Acid. 17. Which substance is acid? A) Vinegar. B) Toothpaste. C) Soap. D) Ammonia. Show Answer Correct Answer: A) Vinegar. 18. Organic acids occur chemically in animal and plant materials A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 19. Turmeric stain in clothes when washed with soap or detergent turns A) Yellow. B) Red. C) Green. D) Blue. Show Answer Correct Answer: B) Red. 20. Bases are located where on the pH scale? A) Any number can be a base. B) Below 7. C) Above 7. D) Number 7 is a base. Show Answer Correct Answer: C) Above 7. 21. Acids Which are commonly used in laboratories are called ..... A) Organic Acids. B) Natural Acids. C) Minaral Acids. D) Man-Made Acids. Show Answer Correct Answer: C) Minaral Acids. 22. Which formula is for hydrochloric acid A) H$_{2}$Cl. B) HNO$_{3}$. C) HCl. D) H$_{2}$SO$_{4}$. Show Answer Correct Answer: C) HCl. 23. The process of using the information in mRNA to make a protein is know as- A) Exocytosis. B) Endocytosis. C) Translation. D) Transcription. Show Answer Correct Answer: C) Translation. 24. Forms a OH-hydroxide ion A) Lewis Base. B) Bronsted Lowry Acid. C) Arrhenius Base. D) Bronsted Lowry Base. Show Answer Correct Answer: C) Arrhenius Base. 25. Used to increase the taste of food ..... A) Cooking soda. B) Sodium chloride. C) Hydrogen chloride. D) Baking soda. Show Answer Correct Answer: B) Sodium chloride. 26. Lactic acid present high value in A) Milk. B) Tamarind. C) Water. D) Curd. Show Answer Correct Answer: A) Milk. 27. Which property does hydrochloric acid have? A) It reacts with any metal to give hydrogen. B) It reacts with any base to give a salt. C) It turns red litmus paper blue. D) It liberates ammonia from ammonium salts. Show Answer Correct Answer: B) It reacts with any base to give a salt. 28. According to the Bronsted-Lowry definition, an acid is a proton ..... while a base is a proton ..... A) Accept;donor. B) User; eliminator. C) Donor;accept. D) User; creator. Show Answer Correct Answer: C) Donor;accept. 29. What is the difference in hydrogen ion concentration between a pH of 3 and a pH of 6? A) A pH of 3 has a hydrogen ion concentration that is 3 times greater than a pH of 6. B) A pH of 3 has a hydrogen ion concentration that is 30 times smaller than a pH of 6. C) A pH of 3 has a hydrogen ion concentration that is 30 times greater than a pH of 6. D) A pH of 3 has a hydrogen ion concentration that is 1000 times greater than a pH of 6. Show Answer Correct Answer: D) A pH of 3 has a hydrogen ion concentration that is 1000 times greater than a pH of 6. 30. Which of these solutions is an acid? A) Tomato Soup:pH of 4. B) Baking Soda:pH of 9. C) Dish Soap:pH of 12. D) Drain Cleaner:pH of 14. Show Answer Correct Answer: A) Tomato Soup:pH of 4. 31. The DNA sequence ATCAGCGCTGGC is part of a gene. how many amino acids are coded for by this message? A) 4. B) 20. C) 8. D) 12. Show Answer Correct Answer: A) 4. 32. Name this compound:Li$_{2}$SO$_{3}$ A) Lithium sulfide. B) Lithium sulfite. C) Lithium sulfate. D) Lithium (I) suflite. Show Answer Correct Answer: B) Lithium sulfite. 33. Accepts a proton (H+ hydrogen ion) A) Lewis Acid. B) Bronstead Lowry Base. C) Lewis Base. D) Arrhenius Base. Show Answer Correct Answer: B) Bronstead Lowry Base. 34. The color of the Finaptian index in alkaline solvents A) Orange. B) Yellow. C) Pink. D) Green. Show Answer Correct Answer: C) Pink. 35. Which base is only found in RNA? A) Uracil. B) Guanine. C) Thymine. D) Adenine. Show Answer Correct Answer: A) Uracil. 36. An acid in water solution tastes ..... A) Tasteless. B) Bitter. C) Sour. D) Spicy. Show Answer Correct Answer: C) Sour. 37. Potassium hydroxide A) KOH. B) K2OH. C) K(OH)2. D) None of the above. Show Answer Correct Answer: A) KOH. 38. Which of the following is used in antacids? A) Ammonium hydroxide. B) Potassium hydroxide. C) Magnesium hydroxide. D) Sodium hydroxide. Show Answer Correct Answer: C) Magnesium hydroxide. 39. The higher the concentration of negative (hydroxide) ions in the solution, the stronger the base is. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 40. Bases have many uses. They are mainly used to make A) Cleaning products. B) Soaps. C) Concrete. D) All of the answer choices. Show Answer Correct Answer: D) All of the answer choices. 41. Metal oxides are generally A) Acidic in nature. B) Neutral. C) Some may be acidic some may be basic. D) Basic in nature. Show Answer Correct Answer: D) Basic in nature. 42. A substance with a pH of 11 is which of the following? A) Acid. B) Base. C) Neutral. D) None of the above. Show Answer Correct Answer: B) Base. 43. Vinegar is a base. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 44. Which of the following is a property of a base? A) Sour taste. B) Salty. C) Bitter button. D) Reacts with metals. Show Answer Correct Answer: C) Bitter button. 45. Acids change the colour of methyl orange to A) Amber. B) Red. C) Pink. D) Yellow. Show Answer Correct Answer: D) Yellow. 46. Foods that are short of one or more of the essential amino acids A) Incomplete protein. B) Complete protein. C) Maillard reaction. D) Aldehydes. Show Answer Correct Answer: A) Incomplete protein. 47. Which of the foll is not mineral acid A) Citric acid. B) H2SO4. C) HNI3. D) HCL. Show Answer Correct Answer: A) Citric acid. 48. Which of these is not an acid? A) Curd. B) Soap solution. C) Orange juice. D) Vinegar. Show Answer Correct Answer: B) Soap solution. 49. Insulin is an exceptional molecule (made up of 51 amino acids), it is an example of: A) A protein. B) A monosaccharide. C) A polysaccharide. D) A nucleotide. Show Answer Correct Answer: A) A protein. 50. Chemical symbol of chlorine is A) Ch. B) C. C) Cl. D) Cr. Show Answer Correct Answer: C) Cl. 51. An alkali is produced when A) An acid reacts with a base. B) A salt dissolves in water. C) An acid dissolves in water. D) A base dissolves in water. Show Answer Correct Answer: D) A base dissolves in water. 52. Compare the elements that are present in a protein to those in a carbohydrate. A) Protein = C, H, O, N (S) and Carbohydrate = C, H, O. B) Protein = C, H, O, N and Carbohydrate = C, H, N. C) Protein = C, H, O, N, P and Carbohydrate = C, H, O. D) None of the above. Show Answer Correct Answer: A) Protein = C, H, O, N (S) and Carbohydrate = C, H, O. 53. Acetic acid is present in A) Vinegar. B) Tomato. C) Lemon. D) Curd. Show Answer Correct Answer: A) Vinegar. 54. Carbon do oxide turns lime water miljy A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 55. Which compound has the highest boiling point? A) Propan-1-the. B) Butane. C) Acetic acid. D) Dimethyl ether. Show Answer Correct Answer: C) Acetic acid. 56. Which acid is present in your stomach A) Sulpher. B) Naoh. C) Hcl. D) Salt. Show Answer Correct Answer: C) Hcl. 57. All bases have a sour taste. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 58. Which of the following pH values represents a base? A) 4.6. B) 2.1. C) 6.8. D) 8.1. Show Answer Correct Answer: D) 8.1. 59. If AAGAGG went through DNA replication, the complementary bases would be ..... A) TTCTCC. B) UUCUCC. C) All the above. D) None of the above. Show Answer Correct Answer: A) TTCTCC. 60. Confirmatory test for Carbon dioxide gas is: A) Carbon dioxide turns lime water milky. B) Carbon dioxide burns with a POP sound. C) Carbon dioxide turn red litmus blue. D) It smells of burning Sulphur. Show Answer Correct Answer: A) Carbon dioxide turns lime water milky. ← PreviousNext →Related QuizzesScience QuizzesClass 7 QuizzesClass 7 Science Chapter 4 Acids Quiz 1Class 7 Science Chapter 4 Acids Quiz 2Class 7 Science Chapter 4 Acids Quiz 3Class 7 Science Chapter 4 Acids Quiz 4Class 7 Science Chapter 4 Acids Quiz 5Class 7 Science Chapter 4 Acids Quiz 6Class 7 Science Chapter 4 Acids Quiz 8Class 7 Science Chapter 4 Acids Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books