MCQOPTIONS
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MCQOPTIONS
This section includes 48 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Sometimes, indigestion is caused by the secretion of too much hydrochloric acid in the stomach. To ease the pain caused, a tablet can be taken that reacts to reduce the amount of acid present. Which one among the following would be inappropriate for a manufacturer to include as a major reactant in the tablet? |
| A. | CaCO |
| B. | MgCO |
| C. | NaOH |
| D. | Mg(OH) |
| Answer» D. Mg(OH) | |
| 2. |
Tc99m-DTPA (diethylenetriaminepenta-acetic acid) is used for |
| A. | Brain imaging |
| B. | pancreatric analysis |
| C. | total water content in the body |
| D. | detecting disfunctioning of liver |
| Answer» B. pancreatric analysis | |
| 3. |
pH of human body varies within the range of |
| A. | 6.0 to 6.5 |
| B. | 5.5 to 5.8 |
| C. | 7.0 to 7.8 |
| D. | 7.0 to 11.0 |
| Answer» D. 7.0 to 11.0 | |
| 4. |
To protect tooth decay we are advised to brush our teeth regularly. The nature of the tooth paste commonly used is |
| A. | acidic |
| B. | neutral |
| C. | basic |
| D. | corrosive |
| Answer» D. corrosive | |
| 5. |
Which one of the following acids is used for etching glass ? |
| A. | H |
| B. | SO |
| C. | HNO |
| D. | HF |
| E. | HCI |
| Answer» D. HF | |
| 6. |
Mildness of shaving cream is enriched by which one of the following ? |
| A. | Sodium silicate |
| B. | Free fatty acid |
| C. | Potassium carbonate |
| D. | Sodium chloride |
| Answer» D. Sodium chloride | |
| 7. |
The acid in gastricjuice is |
| A. | acetic acid |
| B. | nitric acid |
| C. | hydrochloric acid |
| D. | sulphuric acid |
| Answer» D. sulphuric acid | |
| 8. |
Human stomach produces acid 'X' which helps in digestion of food. Acid 'X' is |
| A. | acetic acid |
| B. | methanoic acid |
| C. | hydrochloric acid |
| D. | citric acide |
| Answer» D. citric acide | |
| 9. |
In pure water hydrogen ion concentration is |
| A. | 10 |
| B. | 10 |
| C. | 10 |
| D. | 10 |
| Answer» B. 10 | |
| 10. |
According to Arrhenius theory of an acid and base, an acid is a substance which given ...........ions in water. |
| A. | H |
| B. | ions |
| C. | OH |
| D. | Both |
| E. | None |
| Answer» B. ions | |
| 11. |
The negative logarithmic value of hydrogen on is called |
| A. | pH |
| B. | pOH |
| C. | pK |
| D. | pK |
| Answer» B. pOH | |
| 12. |
The matel reacts with an acid to give |
| A. | N |
| B. | O |
| C. | CI |
| D. | H |
| Answer» E. | |
| 13. |
An acid is a substance which |
| A. | donates a proton |
| B. | accepts an electron |
| C. | give H |
| D. | in water |
| E. | all of these |
| Answer» E. all of these | |
| 14. |
Which is the weakest acid ? |
| A. | HCI |
| B. | HCN |
| C. | HNO |
| D. | HCIO |
| Answer» C. HNO | |
| 15. |
The acid used in lead storage battery is |
| A. | Oxalic acid |
| B. | HNO |
| C. | H |
| D. | SO |
| E. | HCI |
| Answer» D. SO | |
| 16. |
A base is a substance which |
| A. | is bitter in taste |
| B. | gives OH |
| C. | ions in aqueous solution |
| D. | can donate electron |
| E. | All |
| Answer» E. All | |
| 17. |
Which is not a Lewis acid ? |
| A. | BF |
| B. | AICI |
| C. | FeCI |
| D. | NH |
| Answer» E. | |
| 18. |
When Metal carbonate reacts with dilute acids, forms |
| A. | H |
| B. | S |
| C. | NO |
| D. | CO |
| E. | CO |
| Answer» D. CO | |
| 19. |
pH value of alkaline solution is |
| A. | <7 |
| B. | 7 |
| C. | >7 |
| D. | None |
| Answer» D. None | |
| 20. |
The pH of water at 25 C is 7 When it is heated to 100 C, the pH of water |
| A. | increases |
| B. | decreases |
| C. | remains same |
| D. | decreases up to 50 C and then increases |
| Answer» C. remains same | |
| 21. |
pH value of acidic solution is |
| A. | <7 |
| B. | >7 |
| C. | 7 |
| D. | None |
| Answer» B. >7 | |
| 22. |
The element common to all the acids is known as |
| A. | Oxygen |
| B. | Hydrogen |
| C. | Carbon |
| D. | None of these |
| Answer» C. Carbon | |
| 23. |
Which one of the following is the strongest acid ? |
| A. | HBr |
| B. | HF |
| C. | HCIO |
| D. | HCIO |
| E. | <sub>4</sub> |
| Answer» E. <sub>4</sub> | |
| 24. |
The acidic hydrogen in present in |
| A. | Ethyne |
| B. | Ethene |
| C. | Benzene |
| D. | Ethane |
| Answer» B. Ethene | |
| 25. |
If a solution of pH = 6 is diluted by 100 times the resulting soluting would be |
| A. | basic |
| B. | neutral |
| C. | buffer |
| D. | acidic |
| Answer» B. neutral | |
| 26. |
Water solution base is called |
| A. | Acid |
| B. | Salt |
| C. | Alkali |
| D. | None |
| Answer» D. None | |
| 27. |
Acids reach with bases to give |
| A. | ester |
| B. | alcohol |
| C. | salt |
| D. | none |
| Answer» D. none | |
| 28. |
The pH value of wine is |
| A. | 6.5 |
| B. | 2.8 |
| C. | 8.5 |
| D. | 7.0 |
| Answer» C. 8.5 | |
| 29. |
The pH value of sea water is |
| A. | 8.5 |
| B. | 2.6 |
| C. | 3.0 |
| D. | 2.5 |
| Answer» B. 2.6 | |
| 30. |
Source of vitamin C is |
| A. | nitric acid |
| B. | ascorbic acid |
| C. | oxalic acid |
| D. | aaleic acid |
| Answer» C. oxalic acid | |
| 31. |
pH of human body |
| A. | 6.0 to 6.5 |
| B. | 5.5 to 5.8 |
| C. | 7.0 to 7.8 |
| D. | 7.0 to 11.0 |
| Answer» D. 7.0 to 11.0 | |
| 32. |
To protect |
| A. | acidic |
| B. | neutral |
| C. | basic |
| D. | corrosive |
| Answer» D. corrosive | |
| 33. |
Tc99m-DTPA |
| A. | Brain imaging |
| B. | pancreatric analysis |
| C. | total water content in the body |
| D. | detecting disfunctioning of liver |
| Answer» B. pancreatric analysis | |
| 34. |
Mildness of |
| A. | Sodium silicate |
| B. | Free fatty acid |
| C. | Potassium carbonate |
| D. | Sodium chloride |
| Answer» D. Sodium chloride | |
| 35. |
Human stomach produces acid 'X' which helps in digestion of food. |
| A. | acetic acid |
| B. | methanoic acid |
| C. | hydrochloric acid |
| D. | citric acide |
| Answer» D. citric acide | |
| 36. |
The acid used in eye wash is |
| A. | oxalic acid |
| B. | nitric acid |
| C. | boric acid |
| D. | none |
| Answer» D. none | |
| 37. |
Which of the following is formed by dissolution of base of acid in water ? |
| A. | Endothermic |
| B. | Exothermic |
| C. | Monothermic |
| D. | None of these |
| Answer» C. Monothermic | |
| 38. |
Blue litmus paper is converted into red in solution of |
| A. | acid |
| B. | base |
| C. | alkali |
| D. | salt |
| Answer» B. base | |
| 39. |
The sum of pH and pOH in aqueous solution at 25 C is |
| A. | 7 |
| B. | 14 |
| C. | -7 |
| D. | zero |
| Answer» C. -7 | |
| 40. |
By what factor is a solution with pH = 2 more acidic than one with pH = 6 ? |
| A. | 4 |
| B. | 12 |
| C. | 400 |
| D. | 10 |
| E. | <sup>4</sup> |
| Answer» E. <sup>4</sup> | |
| 41. |
Trataric acid is obtained from |
| A. | apples |
| B. | citrous fruit |
| C. | grapes |
| D. | tomato |
| Answer» D. tomato | |
| 42. |
The acid used to remove rust spot is |
| A. | boric acid |
| B. | furmic acid |
| C. | oxalic acid |
| D. | none |
| Answer» D. none | |
| 43. |
Maleic acid is found in the |
| A. | apples |
| B. | vinegar |
| C. | milk |
| D. | lemons |
| Answer» B. vinegar | |
| 44. |
The increasing order of acid strenght of HCI, HI, HBr, HF is |
| A. | HCI < HI < HBr < HF |
| B. | HI < HCI < HBr < HF |
| C. | HF < HCI < HBr < HI |
| D. | None of these |
| Answer» D. None of these | |
| 45. |
The pH scale had been given by |
| A. | Arrhenius |
| B. | Bronsted |
| C. | Sornsen |
| D. | Lewis |
| Answer» D. Lewis | |
| 46. |
Fromic acid is obtained from |
| A. | red ants |
| B. | fats |
| C. | vinegar |
| D. | orange |
| Answer» B. fats | |
| 47. |
Uric acid is present in |
| A. | sada water |
| B. | rancid butter |
| C. | sour milk |
| D. | urine of mammals |
| Answer» E. | |
| 48. |
Red litmus paper is changed into blue in solution of |
| A. | base |
| B. | acid |
| C. | salt |
| D. | none |
| Answer» B. acid | |