MCQOPTIONS
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MCQOPTIONS
This section includes 200 Mcqs, each offering curated multiple-choice questions to sharpen your Organic Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What will be the product when HNO3 reacts with NH4OH? |
| A. | NH4 NO3 |
| B. | 2NH4 NO3 |
| C. | NH4 (NO3)2 |
| D. | NH2NO3 |
| Answer» B. 2NH4 NO3 | |
| 2. |
Which of the following is neither an acid nor base? |
| A. | CH3COOH |
| B. | HCl |
| C. | KCl |
| D. | CH3OH |
| Answer» D. CH3OH | |
| 3. |
What will be the X in the following equation?MgO + 2HCl —-> X + H2O |
| A. | Mg2Cl |
| B. | 2MgCl |
| C. | MgCl |
| D. | MgCl2 |
| Answer» E. | |
| 4. |
Which of the following is wrongly mapped? |
| A. | Sodium carbonate – Washing soda |
| B. | Sodium chloride – common salt |
| C. | Calcium carbonate – slaked lime |
| D. | Sodium hydroxide – caustic soda |
| Answer» D. Sodium hydroxide – caustic soda | |
| 5. |
A Strong acid is same as concentrated acid. |
| A. | False |
| B. | True |
| Answer» B. True | |
| 6. |
Which one is correctly matched? |
| A. | Acids – pH range above7 |
| B. | Acids – pH range below 7 |
| C. | Acids – pH range 7(neutral) |
| D. | Acids – pH range 8-9 |
| Answer» C. Acids – pH range 7(neutral) | |
| 7. |
A poisonous gas released in exhaust fumes is |
| A. | SO₂ |
| B. | CO₂ |
| C. | CO |
| D. | P₂O₅ |
| Answer» D. P₂O₅ | |
| 8. |
Consider equation PbO + NaOH + H₂O → Na₂Pb(OH)₄. balancing of equation requires how much moles of NaOH? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 9. |
A base is a substance which neutralizes an |
| A. | acid |
| B. | base |
| C. | alkali |
| D. | non-metals |
| Answer» B. base | |
| 10. |
Chemical formula for Caustic Potash is |
| A. | NaOH |
| B. | KOH |
| C. | MgO |
| D. | Ca(OH)₂ |
| Answer» C. MgO | |
| 11. |
The carboxylic acids are generally |
| A. | weak acids |
| B. | weak bases |
| C. | strong acids |
| D. | amphoteric |
| Answer» B. weak bases | |
| 12. |
Addition of acid to indicator will shift the equilibrium towards |
| A. | right |
| B. | left |
| C. | up |
| D. | down |
| Answer» C. up | |
| 13. |
CaCO₃ + HCl → |
| A. | Ca(OH)₂ + H₂O |
| B. | CaCl₂ +H₂O |
| C. | CaCl₂ + H₂ + C(s) |
| D. | CaCl₂ + H₂O + CO₂ |
| Answer» E. | |
| 14. |
Digestive fluids in stomach has a pH of |
| A. | 0 |
| B. | 2 |
| C. | 4 |
| D. | 6 |
| Answer» C. 4 | |
| 15. |
Hydrogen Chloride gas (HCl(g)) dissolved in Methylbenzene (C₇H₈) is not acidic because |
| A. | it is ionic in nature |
| B. | it has ample free hydrogen ions |
| C. | it has no free hydrogen ions |
| D. | it can easily form hydroxonium ions |
| Answer» D. it can easily form hydroxonium ions | |
| 16. |
Dye which changes color over a specific pH range is |
| A. | acid-base indicator |
| B. | reactant |
| C. | catalyst |
| D. | product |
| Answer» B. reactant | |
| 17. |
Water reacts with Acyl chlorides in hydrolysis produces |
| A. | carboxylic acids only |
| B. | HCl only |
| C. | H₂SO₄ |
| D. | carboxylic acids and HCl |
| Answer» E. | |
| 18. |
Oxalic acid (H₂C₂O₄) is found in |
| A. | sour milk |
| B. | rhubarb plant |
| C. | limes |
| D. | pears |
| Answer» C. limes | |
| 19. |
In Universal indicators, red color shows a pH of |
| A. | 0 to 3 |
| B. | 1 to 3 |
| C. | 1 to 7 |
| D. | 0 to 7 |
| Answer» B. 1 to 3 | |
| 20. |
Consider equation ZnO + NaOH + H₂O → Na₂Zn(OH)₄. Moles of NaOH required to balance equation would be |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 21. |
According to Lowry and Bronsted theory of acid and bases, water can act as |
| A. | acid only |
| B. | base only |
| C. | ionic salt |
| D. | acid and base |
| Answer» E. | |
| 22. |
Common salt is |
| A. | acidic |
| B. | alkaline |
| C. | neutral |
| D. | basic |
| Answer» D. basic | |
| 23. |
Amphoteric oxides react with an alkali to form |
| A. | salt |
| B. | water |
| C. | acids |
| D. | both a and b |
| Answer» E. | |
| 24. |
If soil is treated with a mild acid, flowers in Hydrangea shrub are of |
| A. | blue color |
| B. | pink color |
| C. | white color |
| D. | brown color |
| Answer» B. pink color | |
| 25. |
Toothpaste has an average pH of |
| A. | 0 |
| B. | 4 |
| C. | 8 |
| D. | 12 |
| Answer» D. 12 | |
| 26. |
In the first stage in Contact process, sulfur (S₈) is burned to form |
| A. | sulfur dioxide gas |
| B. | sulfur trioxide |
| C. | sulfur tetraoxide |
| D. | sulfuric acid (H₂SO₄) |
| Answer» B. sulfur trioxide | |
| 27. |
Acyl chlorides are highly |
| A. | unreactive |
| B. | reactive |
| C. | stable |
| D. | none of above |
| Answer» C. stable | |
| 28. |
Sulfuric acid (H₂SO₄) is used in |
| A. | tanning leather |
| B. | pickling |
| C. | car batteries |
| D. | all of above |
| Answer» E. | |
| 29. |
Basic oxides neutralize |
| A. | water |
| B. | acids |
| C. | non-metal oxides |
| D. | hydroxonium ions |
| Answer» C. non-metal oxides | |
| 30. |
The excellent equilibrium yield of SO₃ at 450 °C is |
| A. | 0.1 |
| B. | 0.2 |
| C. | 0.79 |
| D. | 0.97 |
| Answer» E. | |
| 31. |
One of the most important manufactured chemical is |
| A. | sulfuric acid |
| B. | nitric acid |
| C. | benzoic acid |
| D. | acetic acid |
| Answer» B. nitric acid | |
| 32. |
Bases include |
| A. | metal oxides |
| B. | metal hydroxides |
| C. | non-metal oxides |
| D. | both a and b |
| Answer» E. | |
| 33. |
Going across Period 3, electrons (e⁻) get more |
| A. | protonegative |
| B. | electronegative |
| C. | electropositive |
| D. | protopositive |
| Answer» C. electropositive | |
| 34. |
The acids which completely dissociate in a solution are called as |
| A. | strong acids |
| B. | weak acids |
| C. | strong bases |
| D. | weak bases |
| Answer» B. weak acids | |
| 35. |
Some hydroxides (OH⁻) of transition metals are weak bases (OH⁻) along with |
| A. | ammonia only |
| B. | amines only |
| C. | nitrogen |
| D. | ammonia and amines |
| Answer» E. | |
| 36. |
Mineral acids |
| A. | have simpler structures |
| B. | are naturally occurring |
| C. | are less corrosive |
| D. | are found in nature |
| Answer» B. are naturally occurring | |
| 37. |
The basic formula for monobasic acid is |
| A. | AH |
| B. | HA |
| C. | Ha |
| D. | aH |
| Answer» C. Ha | |
| 38. |
Acids are |
| A. | corrosive |
| B. | turn litmus from blue to red |
| C. | sour in taste |
| D. | all of these |
| Answer» E. | |
| 39. |
On the description of the proton, the new classification of acid and base was given byA substance which neutralizes a base is calledSaliva neutralizes acid, therefore it is slightly |
| A. | J. Bronsted onlyacidalkaline |
| B. | T. Lowry onlyalkaliacidic |
| C. | J.Daltonalkaloidbasic |
| D. | J. Bronsted and T. Lowryhalogenamphoteric |
| Answer» C. J.Daltonalkaloidbasic | |
| 40. |
PH is an abbreviation of |
| A. | philosophy of humans |
| B. | power of humans |
| C. | power of hydrogen |
| D. | power of hydroxonium ion |
| Answer» D. power of hydroxonium ion | |
| 41. |
Sulfuric acid is not used in |
| A. | making fertilizers |
| B. | detergents |
| C. | toothpaste |
| D. | none of above |
| Answer» E. | |
| 42. |
The sugar in our foods are converted to acid by the bacteria which can attack our tooth's |
| A. | stability |
| B. | enamel |
| C. | color |
| D. | roots |
| Answer» C. color | |
| 43. |
Carboxylates are salts produced during reactions of |
| A. | carboxylic acids |
| B. | acyl compounds |
| C. | alcohols |
| D. | alkenes |
| Answer» B. acyl compounds | |
| 44. |
The oxide that is not acidic is |
| A. | SiO₂ |
| B. | P₄O₁₀ |
| C. | SO₂ |
| D. | MgO |
| Answer» E. | |
| 45. |
Milk has a pH of |
| A. | 3 |
| B. | 6 |
| C. | 9 |
| D. | 12 |
| Answer» C. 9 | |
| 46. |
Products of reaction CuO + HNO₃ → are |
| A. | Cu₂NO₃ + H₂O |
| B. | Cu(NO₃)₂ + H₂O |
| C. | Cu(NO₃)₂ + H₂ |
| D. | Cu(NO₂)4 + H₂ |
| Answer» C. Cu(NO₃)₂ + H₂ | |
| 47. |
In Universal indicators, weak alkalis are indicated through a pH of |
| A. | 4 to 7 |
| B. | 8 to 10 |
| C. | 10 to 14 |
| D. | 7 to 14 |
| Answer» C. 10 to 14 | |
| 48. |
Metal oxides |
| A. | are basic oxides |
| B. | are soluble in water |
| C. | are called alkalis |
| D. | all of these |
| Answer» E. | |
| 49. |
When an alkali is added to acid, water formation is also called as |
| A. | polymerization |
| B. | neutralization |
| C. | formation of hydroxonium ions |
| D. | reversible reactions |
| Answer» C. formation of hydroxonium ions | |
| 50. |
Consider equation Al₂O₃ + NaOH + H₂O →NaAl(OH)₄. Balancing of equation requires how many moles of NaOH? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |