MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The butane (C |
| A. | 63.71g/mol |
| B. | 58.122g/mol |
| C. | 51.19g/mol |
| D. | 55.12g/mol |
| Answer» C. 51.19g/mol | |
| 2. |
The formula ZnCl |
| A. | +2 |
| B. | +1 |
| C. | −2 |
| D. | −1 |
| Answer» B. +1 | |
| 3. |
In the electrolysis of H |
| A. | hydroxide ions are difficult to discharge |
| B. | Sulphate ions are discharged |
| C. | SO |
| D. | fumes can be collected |
| E. | oxygen gas is given off |
| Answer» E. oxygen gas is given off | |
| 4. |
The monomer of nucleic acid is |
| A. | peptides |
| B. | amino acid |
| C. | lipid |
| D. | nucleotide |
| Answer» E. | |
| 5. |
Sodium-potassium (NA |
| A. | enzyme |
| B. | carrier protein |
| C. | is very common in all plant cells |
| D. | is not found in animal cells |
| Answer» C. is very common in all plant cells | |
| 6. |
Sum of all the biochemical reactions in the body are referred to as |
| A. | metabolism |
| B. | biochemistry |
| C. | condensation |
| D. | molecular biology |
| Answer» B. biochemistry | |
| 7. |
Vibrio cholerae bacterium can not survive if the |
| A. | pH is between 4.5 and 7 |
| B. | pH is below 4.5 |
| C. | pH is above 11 |
| D. | pH is between 7 and 11 |
| Answer» C. pH is above 11 | |
| 8. |
Calcium carbonate CaCO |
| A. | liquid |
| B. | solid |
| C. | aqueous |
| D. | gas |
| Answer» C. aqueous | |
| 9. |
Consider the equation: Pb+2 (aq) + 2OH- (aq) → Pb(OH) |
| A. | blue color |
| B. | green color |
| C. | white color |
| D. | brown color |
| Answer» D. brown color | |
| 10. |
A salt (s) and H |
| A. | an acid and a metal |
| B. | an acid and oxide |
| C. | an acid and a sodium hydrogen carbonate |
| D. | an acid and base |
| Answer» B. an acid and oxide | |
| 11. |
Reaction of Carbon(s) with O |
| A. | Thermal decomposition |
| B. | combustion |
| C. | Respiration |
| D. | Neutralization |
| Answer» C. Respiration | |
| 12. |
CuO + H |
| A. | hydrogen gas |
| B. | water |
| C. | Copper crystals |
| D. | oxygen gas |
| Answer» B. water | |
| 13. |
Consider the reactants: HNO |
| A. | the reaction results in Barium nitrate |
| B. | reaction takes place in aquatic state |
| C. | the reaction may not occur at all |
| D. | reaction results in barium nitrite |
| Answer» D. reaction results in barium nitrite | |
| 14. |
Consider the equation P |
| A. | 4 |
| B. | 2 |
| C. | 8 |
| D. | 6 |
| Answer» E. | |
| 15. |
Smooth muscles do not found in |
| A. | tunica externa |
| B. | tunica intima |
| C. | either of these |
| D. | tunica media |
| Answer» B. tunica intima | |
| 16. |
In a reaction between CuSO |
| A. | copper is being reduced |
| B. | copper gains electrons |
| C. | all of these |
| D. | copper experiences a decrease in oxidation state |
| Answer» D. copper experiences a decrease in oxidation state | |
| 17. |
To balance Cu + H |
| A. | 2 |
| B. | 1 |
| C. | 4 |
| D. | 3 |
| Answer» B. 1 | |
| 18. |
KOH, NaOH and CuSO |
| A. | non-electrolyte |
| B. | strong electrolyte |
| C. | None of Above |
| D. | weak electrolyte |
| Answer» C. None of Above | |
| 19. |
The molar mass of potassium hydrogen carbonate KHCO |
| A. | 100.115g/mol |
| B. | 90.15g/mol |
| C. | 119.21g/mol |
| D. | 111.127g/mol |
| Answer» B. 90.15g/mol | |
| 20. |
Consider the equation: Fe+3 (aq) + 3OH- (aq) → Fe(OH) |
| A. | blue color |
| B. | green color |
| C. | white color |
| D. | brown color |
| Answer» E. | |
| 21. |
The symbol of silver is |
| A. | Se |
| B. | Si |
| C. | Ag |
| D. | Sn |
| Answer» D. Sn | |
| 22. |
Conversion of ammonium nitrate NH |
| A. | Thermal decomposition |
| B. | combustion |
| C. | dissolving |
| D. | Neutralization |
| Answer» D. Neutralization | |
| 23. |
The relative molecular mass of Na |
| A. | 128 |
| B. | 98 |
| C. | 198 |
| D. | 286 |
| Answer» E. | |
| 24. |
The formula K |
| A. | 2 ions of Kalium are combined with 1 sulphate ion |
| B. | 2 ions of Kalium are combined with 4 molecules of oxygen |
| C. | None of Above |
| D. | 2 ion sof potassium are combined with one sulphur and 4 oxygen molecules |
| Answer» B. 2 ions of Kalium are combined with 4 molecules of oxygen | |
| 25. |
To balance Al(OH) |
| A. | 2 |
| B. | 1 |
| C. | 4 |
| D. | 3 |
| Answer» B. 1 | |
| 26. |
Consider the chemical reaction ZnCO |
| A. | 2 |
| B. | 1 |
| C. | 4 |
| D. | 3 |
| Answer» B. 1 | |
| 27. |
The molar mass of copper oxide Cu |
| A. | 139.33g/mol |
| B. | 113.14g/mol |
| C. | 143.09g/mol |
| D. | 173.298g/mol |
| Answer» D. 173.298g/mol | |
| 28. |
An Excess amino acids can be |
| A. | used to build elastin in lungs |
| B. | used to build cell walls |
| C. | are taken from liver to kidneys |
| D. | are fatal for the body |
| Answer» D. are fatal for the body | |
| 29. |
In lock and key hypothesis, substrate is the |
| A. | lock |
| B. | key |
| C. | None of above |
| D. | Both A and B |
| Answer» C. None of above | |
| 30. |
Which Carbon atom number is not part of the ring in C |
| A. | 3 |
| B. | 1 |
| C. | 6 |
| D. | 5 |
| Answer» E. | |
| 31. |
The molar mass of Calcium Carbonate CaCO |
| A. | 99.0154g/mol |
| B. | 100.0869 g/mol |
| C. | 101.087g/mol |
| D. | 110.018g/mol |
| Answer» C. 101.087g/mol | |
| 32. |
Consider the reaction: CuO + H |
| A. | fractional distillation |
| B. | crystallization |
| C. | centrifugation |
| D. | vacuum distillation |
| Answer» D. vacuum distillation | |
| 33. |
Consider the equation PbO + HCl → PbCl |
| A. | 2 |
| B. | 1 |
| C. | 4 |
| D. | 3 |
| Answer» B. 1 | |
| 34. |
The molar mass of urea NH |
| A. | 55.89g/mol |
| B. | 59.51g/mol |
| C. | 65.32g/mol |
| D. | 60.055 g/mol |
| Answer» E. | |
| 35. |
In KHCO |
| A. | Potassium |
| B. | Oxygen |
| C. | Hydrogen |
| D. | Carbon |
| Answer» C. Hydrogen | |
| 36. |
The force provided by breaking system of train if it is decelerating at the rate of -3ms |
| A. | -40,000 N |
| B. | -30,000 N |
| C. | 30,000 N |
| D. | -50,000 N |
| Answer» C. 30,000 N | |
| 37. |
The height of atmosphere if atmospheric density is 1.29 kgm |
| A. | 7829.4 m |
| B. | 7839.4 m |
| C. | 7859.4 m |
| D. | 7849.4 m |
| Answer» B. 7839.4 m | |
| 38. |
Consider the equation: Cu+2 (aq) + 2OH- (aq) → Cu(OH) |
| A. | blue color |
| B. | green color |
| C. | white color |
| D. | brown color |
| Answer» B. green color | |
| 39. |
Which option is incorrect? Rate of transpiration is |
| A. | zero at night |
| B. | maximum during the night |
| C. | depends upon the thickness of the cuticle |
| D. | proportional to the active transport of water through root hairs |
| Answer» C. depends upon the thickness of the cuticle | |
| 40. |
The transmission cycle of cholera can be broken by |
| A. | by destroying the small intestine lining were cholera virus grows |
| B. | treating with medications |
| C. | chlorination of water |
| D. | by boiling all vegetables and fruits before consuming |
| Answer» D. by boiling all vegetables and fruits before consuming | |
| 41. |
If water potential increases, water may |
| A. | move out of the cell |
| B. | enter the cell |
| C. | the metabolic reactions will stop |
| D. | osmosis may occur |
| Answer» C. the metabolic reactions will stop | |
| 42. |
Well organized transport system needs a |
| A. | are found in most of the jellyfish and sea anemones |
| B. | large surface area compared to total volume |
| C. | may rapidly develop carcinogens |
| D. | need pump to keep fluid moving through them |
| Answer» E. | |
| 43. |
A rapid increase in cases around the world is called |
| A. | prodemic |
| B. | pandemic |
| C. | epidemic |
| D. | endemic |
| Answer» C. epidemic | |
| 44. |
Hydroxyl ions in C |
| A. | 3 |
| B. | 1 |
| C. | 7 |
| D. | 5 |
| Answer» E. | |
| 45. |
People who are suffering from Emphysema have |
| A. | rapid breathing rate |
| B. | slow breathing rate |
| C. | None of above |
| D. | normal breathing rate |
| Answer» B. slow breathing rate | |
| 46. |
Gas exchanging system can not be damaged by |
| A. | CO |
| B. | Carcinogens |
| C. | any of these |
| D. | Nicotine |
| Answer» C. any of these | |
| 47. |
An Active transport occurs |
| A. | out of the cell |
| B. | into the cell |
| C. | across the stomatal pores |
| D. | both into and out of the cell |
| Answer» E. | |
| 48. |
The Benedict's solution consists of |
| A. | copper sulphate |
| B. | aluminum sulphate |
| C. | sodium carbonate |
| D. | calcium hydroxide |
| Answer» B. aluminum sulphate | |
| 49. |
Excessive of Glucose may |
| A. | stop the respiration |
| B. | slow down the respiration |
| C. | All of above |
| D. | may cause water to move out of cell |
| Answer» E. | |
| 50. |
On the outer edge of the endosperm is |
| A. | embryo |
| B. | waterproof protective layer |
| C. | aleuronic layer |
| D. | food reserves |
| Answer» D. food reserves | |