This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 4 Acids – Quiz 12 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 4 Acids Quiz 12 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following is a property of an acid(a) Slippery feel(b) Non-reactive(c) Sour taste(d) Strong color A) A. B) B. C) C. D) D. Show Answer Correct Answer: C) C. 2. What dictates the shape of a protein? A) The shape of the RBC. B) The consumed amino acids. C) How much you eat. D) The position of all amino acids in the chain. Show Answer Correct Answer: D) The position of all amino acids in the chain. 3. If a student places a few drops of hydrochloric acid on a piece of blue litmus paper, what will happen? A) It will stay blue. B) It will turn red. C) It will turn black. D) It will turn yellow. Show Answer Correct Answer: B) It will turn red. 4. Stronger acids have a pH closer to ..... A) 7. B) 14. C) 0. D) 9. Show Answer Correct Answer: C) 0. 5. The correct name for this acid CH$_{3}$COOH is A) Hydrochloric acid. B) Acetic acid. C) Hydroacetic acid. D) Acetate acid. Show Answer Correct Answer: B) Acetic acid. 6. A scale used to specify how acidic or basic a water-based solution is. Acidic solutions have a lower pH, while basic solutions have a higher pH A) PH Scale. B) Triple beam balance. C) Grocery store scale. D) Plate scale. Show Answer Correct Answer: A) PH Scale. 7. Concentration is A) The amount of solute in the solvent. B) The amount of solvent in the solute. C) A measure of how strong an acid or base is. D) The size of the particles in a solution. Show Answer Correct Answer: A) The amount of solute in the solvent. 8. Amino Acids: A) Are a type of marinade. B) Help transport fats in the body. C) Are the building blocks from which proteins are made. D) Are only found in plants. Show Answer Correct Answer: C) Are the building blocks from which proteins are made. 9. HNO$_{2}$ A) A base. B) A salt. C) An acid. D) An ionic compound. Show Answer Correct Answer: C) An acid. 10. H$_{3}$PO$_{4}$ A) Hydrophsophorus acid. B) Phosphoric acid. C) Hydrogen phosphorous. D) Phosphori hydroxide. Show Answer Correct Answer: B) Phosphoric acid. 11. The correct name for this acid H$_{2}$SO$_{3}$ is A) Hydrosulfiric acid. B) Sulfurous acid. C) Sulfiric acid. D) Sulfate acid. Show Answer Correct Answer: B) Sulfurous acid. 12. IF A DROP OF CHINA ROSE INDICATOR IS GIVEN TO AN ACID. IT CHANGES IT'S COLOUR FROM LIGHT PINK TO ..... A) MAGENTA. B) GREEN. C) YELLOW. D) REMAINS SAME. Show Answer Correct Answer: A) MAGENTA. 13. What was Rosalind Franklin's role in the discovery of the structure of DNA? A) She discovered that DNA is made of nucleotides. B) She carried out X-ray diffraction experiments leading to the determination that DNA is a double helix. C) She carried out X-ray diffraction experiments and concluded that DNA strands run in opposite directions. D) She produced the three-dimensional molecular model of DNA to show that it is a double helix. Show Answer Correct Answer: B) She carried out X-ray diffraction experiments leading to the determination that DNA is a double helix. 14. If you neutralize an acid with a base what will be produced? A) Sugar and water. B) Sugar and salt. C) Salt and water. D) Water. Show Answer Correct Answer: C) Salt and water. 15. What is the function of RNA? A) Messenger carrying instructions from DNA for controlling the synthesis of proteins. B) Carries genetic information. C) Allows things to enter/leave the cell. D) Tells you it is a nucleic acid and not a protein. Show Answer Correct Answer: A) Messenger carrying instructions from DNA for controlling the synthesis of proteins. 16. Name the acid that uses an acetate ion:HC$_{2}$H$_{3}$O$_{2}$ A) Acetic acid. B) Acetous acid. C) Hydrogen Acetate acid. D) Hydrogen Acetatic acid. Show Answer Correct Answer: A) Acetic acid. 17. Bicarbonate of soda (pH 9) be used to treat a bee sting. A bee sting is ..... A) Acidic. B) Basic. C) Neutral. D) Salt. Show Answer Correct Answer: A) Acidic. 18. PH value ..... A) 5.5. B) 5.6. C) 5. D) 7. Show Answer Correct Answer: A) 5.5. 19. Why should curd and sour substance not be kept in brass and copper vessels? A) Because they are acids, the acid will react and the container will be corroded. B) Because they are bases. C) They are indicators. D) Because they are olfactory indicators. Show Answer Correct Answer: A) Because they are acids, the acid will react and the container will be corroded. 20. All sour tasting fruits and vegetables contain ..... A) Sugar. B) Salt. C) Acid. D) None of the above. Show Answer Correct Answer: C) Acid. 21. What does an acid release when placed in water? A) Hydroxide ions (OH-). B) Hydrogen ions (H+). C) Ions. D) Nothing. Show Answer Correct Answer: B) Hydrogen ions (H+). 22. Vinegar is a dilute solution of ..... acid A) Acetic. B) Formic. C) Oxalic. D) Oleic. Show Answer Correct Answer: A) Acetic. 23. Bases are compounds which are characterized by ..... A) Bitterness in taste. B) A soapy touch. C) Sourness in taste. D) Both a & b. Show Answer Correct Answer: D) Both a & b. 24. A bronsted lowry base A) Produces hydroxide ions in a solution. B) Is a proton donor. C) Produces hydrogen ions in a solution. D) Is a proton acceptor. Show Answer Correct Answer: D) Is a proton acceptor. 25. Acid + Metal $\rightarrow$? A) Salt + Water. B) Salt + Hydrogen. C) Salt. D) Hydrogen. Show Answer Correct Answer: B) Salt + Hydrogen. ← 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