This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 4 Acids – Quiz 44 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 4 Acids Quiz 44 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Acid in vinegar: A) Hydrochloric acid. B) Sulfuric acid. C) Acetic acid. D) Carbonic acid. Show Answer Correct Answer: C) Acetic acid. 2. 2-propanol heated with conc. H$_{2}$SO$_{4 }$produced A) Propanoic acid. B) Propane. C) Propene. D) Propanal. Show Answer Correct Answer: C) Propene. 3. Uracil is A) Pyrimidine. B) Present only in RNA. C) Pairs with Adenine. D) All of the above. Show Answer Correct Answer: D) All of the above. 4. A base has a ..... A) Sour taste. B) Positive ion. C) Slippery feel. D) PH of 5. Show Answer Correct Answer: C) Slippery feel. 5. When red ants bites it inject ..... acid A) Acetic acid. B) Hydrogen peroxide. C) Formic acid. D) Benzoic acid. Show Answer Correct Answer: C) Formic acid. 6. Use your codon chart to answer the following question:UAU ACG GCU CCAWhat is the sequence of amino acids that will be translated from the mRNA above? A) Tyrosine-alanine-proline-threonine. B) Threonine-tyrosine-alanine-proline. C) Tyrosine-threonine-alanine-proline. D) Tyrosine-proline-alanine-threonine. Show Answer Correct Answer: C) Tyrosine-threonine-alanine-proline. 7. What is the formula for phosphoric acid? A) HPO $ _ {3} $. B) H$_{3}$PO$_{4}$. C) H$_{2}$PO$_{4}$. D) H$_{3}$PO$_{3}$. Show Answer Correct Answer: B) H$_{3}$PO$_{4}$. 8. A neutralisation reaction produces A) An acid. B) A neutral substance. C) Only water. D) Salt and water. Show Answer Correct Answer: D) Salt and water. 9. Which of the following statements about a dilute aqueous solution of strong acid is correct? A) It is a strong electrolyte. B) It has a pH value of 1. C) It is very sour. D) It reacts with all metals. Show Answer Correct Answer: A) It is a strong electrolyte. 10. Aromatic amino acids include A) Phenyl alanine, tyrosine & tryptophan. B) Phenyl alanine, serine & tryptophan. C) Threonine, tyrosine & tryptophan. D) Spray, Tyrosine & Tryptophan. Show Answer Correct Answer: A) Phenyl alanine, tyrosine & tryptophan. 11. Which of these is a property of acidic solutions? A) They taste sour. B) They feel slippery. C) They are in many cleaning products. D) They taste bitter. Show Answer Correct Answer: A) They taste sour. 12. The Dependent variable is graphed on the A) Y axis. B) X axis. C) D axis. D) You can't graph it. Show Answer Correct Answer: A) Y axis. 13. Ph full meaning A) Potential of hydrogen. B) Potential hydrogen. C) Potential hydroxide. D) None of the above. Show Answer Correct Answer: A) Potential of hydrogen. 14. What is the name of HCN? A) Hydrogen cyanide acid. B) Hydrocyanide acid. C) Hydrocyanic acid. D) Cyanic acid. Show Answer Correct Answer: C) Hydrocyanic acid. 15. The anion part in this H$_{2}$PO$_{4}$ acid is A) Nitrate ion. B) Phosphate ion. C) Phosphite ion. D) Nitrous ion. Show Answer Correct Answer: B) Phosphate ion. 16. Fill in the blank:- ..... shows no change in colour when added to a neutral substance. A) Litmus Paper. B) Phenolphthalein. C) Methyl Orange. D) All of these. Show Answer Correct Answer: D) All of these. 17. When the pH Scale is on 5, the Nature of the substance is- A) Neutral. B) Acidic. C) Basic. D) None of the Above. Show Answer Correct Answer: B) Acidic. 18. Acids present in plants and animals are called ..... A) Mineral Acids. B) Organic Acids. C) Dilute Acids. D) None of the above. Show Answer Correct Answer: B) Organic Acids. 19. FORMIC ACID IS FOUND IN A) CURD. B) AMLA. C) VINEGAR. D) ANT'S STING. Show Answer Correct Answer: D) ANT'S STING. 20. Litmus changes to the colour ..... in the presence of an acid. A) Red. B) Yellow. C) Blue. D) Green. Show Answer Correct Answer: A) Red. 21. Proteins are made up of a combination of how many unique amino acids? A) 10. B) 20. C) 25. D) 50. Show Answer Correct Answer: B) 20. 22. Use your CODON CHART to answer the following question.What amino acid is codded for by the codon GCA? A) Serine. B) Alanine. C) Arginine. D) Proline. Show Answer Correct Answer: B) Alanine. 23. SODIUM HYDROXIDE TURNS BLUE LITMUS PAPER RED A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALSE. 24. What happens when an acid reacts with a metal? A) It forms a salt and water. B) It forms a salt and hydrogen gas. C) It forms a base and water. D) It forms a base and hydrogen gas. Show Answer Correct Answer: B) It forms a salt and hydrogen gas. 25. What is the name of HI? A) Iodic acid. B) Hydroiodic acid. C) Iodous acid. D) Hypoiodous acid. Show Answer Correct Answer: B) Hydroiodic acid. ← PreviousNext →Related 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 7Class 7 Science Chapter 4 Acids Quiz 8Class 7 Science Chapter 4 Acids Quiz 9Class 7 Science Chapter 4 Acids Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books