MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following is not a Lewis acid? |
| A. | aluminium chloride |
| B. | sodium ion |
| C. | sulphur tetrafluoride |
| D. | hydroxide ion |
| Answer» E. | |
| 2. |
Water in case of HCl acts as a/an ___________, in case of ammonia acts as a/an ________ |
| A. | base, base |
| B. | base, acid |
| C. | acid, base |
| D. | acid, acid |
| Answer» C. acid, base | |
| 3. |
Hydroxide ion is a bronsted base. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 4. |
Which of the following is the strongest hydracid known? |
| A. | HCN |
| B. | HClO4 |
| C. | HCl |
| D. | HNO3 |
| Answer» C. HCl | |
| 5. |
Identify a conjugate pair in the equation: NH3 + H2O \(\rightleftharpoons\) NH4+ + OH–. |
| A. | ammonia and water |
| B. | water and hydroxide ion |
| C. | ammonium ion and hydroxide ion |
| D. | ammonia and hydroxide ion |
| Answer» C. ammonium ion and hydroxide ion | |
| 6. |
Lewis concept does explain the behaviour of __________ |
| A. | bases |
| B. | salts |
| C. | protonic acids |
| D. | amphoteric substances |
| Answer» D. amphoteric substances | |
| 7. |
Silver ion is a Lewis acid. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
Which of the following is a Lewis base? |
| A. | ammonia |
| B. | magnesium chloride |
| C. | aluminium chloride |
| D. | sodium ion |
| Answer» B. magnesium chloride | |
| 9. |
Which of the following substances cannot act as both acid as well as a base? |
| A. | amphoteric substance |
| B. | amphiprotic substance |
| C. | ampholyte |
| D. | protophilic |
| Answer» E. | |
| 10. |
A strong acid has a ______________ |
| A. | weak conjugate acid |
| B. | weak conjugate base |
| C. | strong conjugate base |
| D. | strong conjugate acid |
| Answer» C. strong conjugate base | |
| 11. |
Arrhenius theory could not explain the acidic and basic behaviour in non-aqueous solutions. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 12. |
A proton donor is a ____________ substance. |
| A. | protongenic |
| B. | protophilic |
| C. | amphoteric |
| D. | amphiprotic |
| Answer» B. protophilic | |
| 13. |
HCl is an Arrhenius ___________ |
| A. | acid |
| B. | base |
| C. | salt |
| D. | water |
| Answer» B. base | |
| 14. |
Bases turn red litmus blue. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 15. |
Which of the following is not a property of an acid according to Robert Boyle? |
| A. | turns blue Litmus red |
| B. | sour in taste |
| C. | neutralize bases |
| D. | bitter in taste |
| Answer» E. | |