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. |
How many recycle streams are there in the following process? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 2. |
Ethane is burnt with 20% excess O₂ at 2 atm, conversion rate of ethane is 50%, what is the pressure at due point? |
| A. | 0.45 atm |
| B. | 0.75 atm |
| C. | 0.9 atm |
| D. | 1 atm |
| Answer» D. 1 atm | |
| 3. |
Which of the following is not a way of condensation of vapor? |
| A. | Cooling at constant volume |
| B. | Cooling at constant pressure |
| C. | Compress it isothermally |
| D. | Compress it |
| Answer» E. | |
| 4. |
Lightning during thunderstorm provides energy for reaction of |
| A. | nitrogen only |
| B. | oxygen only |
| C. | carbon dioxide |
| D. | nitrogen and oxygen |
| Answer» E. | |
| 5. |
State of matter which shows maximum expansion is |
| A. | solids |
| B. | gases |
| C. | liquids |
| D. | plasma |
| Answer» C. liquids | |
| 6. |
Different amounts of gases have different values of |
| A. | m |
| B. | s |
| C. | k |
| D. | t |
| Answer» D. t | |
| 7. |
Excluded volume of gas depends upon |
| A. | volume |
| B. | size of gas |
| C. | shape of gas |
| D. | hydrogen bonding |
| Answer» C. shape of gas | |
| 8. |
Forces of attraction present among gas molecules are |
| A. | excessive |
| B. | negligible |
| C. | highly packed |
| D. | hydrogen bonding |
| Answer» C. highly packed | |
| 9. |
The reactive effects of oxygen gas can be nullified by the help of |
| A. | nitrogen |
| B. | hydrogen |
| C. | helium |
| D. | boron |
| Answer» B. hydrogen | |
| 10. |
Critical temperature is affected by |
| A. | size of gas |
| B. | shape of gas |
| C. | intermolecular of gas |
| D. | all of factors |
| Answer» E. | |
| 11. |
Respiratory diseases in patients are diagnosed by analyzing partial pressure of gases in |
| A. | lungs |
| B. | blood |
| C. | serum |
| D. | trachea |
| Answer» B. blood | |
| 12. |
In Graham's law description 40.5 cm is distance travelled by |
| A. | NH₄Cl |
| B. | ammonia |
| C. | HCl |
| D. | oxygen |
| Answer» D. oxygen | |
| 13. |
The product that is in the liquid state is |
| A. | NaCl |
| B. | MgCl₂ |
| C. | SiCl₄ |
| D. | Al₂Cl₆ |
| Answer» D. Al₂Cl₆ | |
| 14. |
Temperature at which molecular movement is ceased, is |
| A. | absolute zero |
| B. | absolute 1 |
| C. | absolute3 |
| D. | absolute 5 |
| Answer» B. absolute 1 | |
| 15. |
When burned with oxygen, sodium gives off a |
| A. | blue flame |
| B. | violet flame |
| C. | yellow flame |
| D. | pink flame |
| Answer» D. pink flame | |
| 16. |
Expansion in Linde's method takes place from 200 atm to |
| A. | 1 atm |
| B. | 5 atm |
| C. | 7 atm |
| D. | 9 atm |
| Answer» B. 5 atm | |
| 17. |
A large room which is filled with 2600 moles of gases contains 60 kg of nitrogen and 17 kg of |
| A. | oxygen |
| B. | hydrogen |
| C. | carbon dioxide |
| D. | carbon monoxide |
| Answer» B. hydrogen | |
| 18. |
Fourth state of matter is called |
| A. | gas |
| B. | solid |
| C. | liquid |
| D. | plasma |
| Answer» E. | |
| 19. |
Phosphorous reacts with chlorine to form |
| A. | PCl₂ |
| B. | PCl₃ |
| C. | PCl₅ |
| D. | P₂Cl₅ |
| Answer» D. P₂Cl₅ | |
| 20. |
Temperature describes vibrational kinetic energy in |
| A. | liquids |
| B. | solids |
| C. | gases |
| D. | plasma |
| Answer» C. gases | |
| 21. |
Compressibility factor remains constant at constant |
| A. | pressure |
| B. | temperature |
| C. | volume |
| D. | surface area |
| Answer» C. volume | |
| 22. |
The oxidation number of sulfur trioxide is |
| A. | +2 |
| B. | +4 |
| C. | +6 |
| D. | +8 |
| Answer» D. +8 | |
| 23. |
Plasma responds to electric and magnetic fields because of |
| A. | charged particles |
| B. | atoms |
| C. | protons |
| D. | neutrons |
| Answer» B. atoms | |
| 24. |
PM/RT is an expression for |
| A. | density |
| B. | pressure |
| C. | volume |
| D. | temperature |
| Answer» B. pressure | |
| 25. |
Kinetic molecular theory was given in year |
| A. | 1755 |
| B. | 1760 |
| C. | 1750 |
| D. | 1738 |
| Answer» E. | |
| 26. |
Boiling point of water on centigrade scale is |
| A. | 100 |
| B. | 200 |
| C. | 300 |
| D. | 120 |
| Answer» B. 200 | |
| 27. |
Constants which are termed as van der Waal constants are |
| A. | a and b |
| B. | c and d |
| C. | d and e |
| D. | e and f |
| Answer» B. c and d | |
| 28. |
Minimum temperature which has been attained is |
| A. | 10-5 |
| B. | 10-7 |
| C. | 10-8 |
| D. | 10-9 |
| Answer» B. 10-7 | |
| 29. |
Sulfur reacts with chlorine to form |
| A. | SCl₂ only |
| B. | S₂Cl₂ only |
| C. | SCl₃ |
| D. | SCl₂ and S₂Cl₂ |
| Answer» E. | |
| 30. |
When crops are harvested, the nitrogen in the harvested portions is |
| A. | reduced |
| B. | increased |
| C. | oxidized |
| D. | kept same |
| Answer» B. increased | |
| 31. |
Nitrogen belongs to which group? |
| A. | Group-II |
| B. | Group-IV |
| C. | Group-V |
| D. | Group-VI |
| Answer» D. Group-VI | |
| 32. |
Gases are compressed at about 200atm pressure for |
| A. | liquefaction |
| B. | solidification |
| C. | heating |
| D. | gaseous form |
| Answer» B. solidification | |
| 33. |
The relative molecular mass of a substance can be found by using |
| A. | relative spectrometer |
| B. | mass spectrometer |
| C. | weight spectrometer |
| D. | radius spectrometer |
| Answer» C. weight spectrometer | |
| 34. |
Most of matter on earth is in |
| A. | solid state |
| B. | liquid state |
| C. | gaseous state |
| D. | plasma state |
| Answer» B. liquid state | |
| 35. |
760 mm of Hg is taken at an area of |
| A. | 1 cm square |
| B. | 2 cm square |
| C. | 3 cm square |
| D. | 4 cm square |
| Answer» B. 2 cm square | |
| 36. |
P' is given by formula |
| A. | a/V square |
| B. | a/V cube |
| C. | a square/V |
| D. | a/P |
| Answer» B. a/V cube | |
| 37. |
The pressure which is exerted by any one has in a mixture is called |
| A. | partial pressure |
| B. | compressed pressure |
| C. | open pressure |
| D. | close pressure |
| Answer» B. compressed pressure | |
| 38. |
When acid rain falls in the river and lakes, the pH of water will |
| A. | increase |
| B. | lowered |
| C. | remain unaltered |
| D. | none of above |
| Answer» C. remain unaltered | |
| 39. |
When heated, a metal burns with a blue flame in a jar of oxygen, this metal is |
| A. | Na(s) |
| B. | Mg(s) |
| C. | Al(s) |
| D. | S(s) |
| Answer» E. | |
| 40. |
Gases have low value of |
| A. | density |
| B. | volume |
| C. | gravity |
| D. | both a and b |
| Answer» B. volume | |
| 41. |
Thing collected at bottom of expansion chamber in linde's method is |
| A. | liquid air |
| B. | hydrogen |
| C. | nitrogen |
| D. | ice |
| Answer» B. hydrogen | |
| 42. |
Gases have weak intermolecular |
| A. | spaces |
| B. | atoms |
| C. | volume |
| D. | forces |
| Answer» E. | |
| 43. |
Laws of gases are obtained by |
| A. | pressure |
| B. | volume |
| C. | ideal gas equation |
| D. | Joule Thomson effect |
| Answer» D. Joule Thomson effect | |
| 44. |
Charle's law was given by |
| A. | Dutch scientist |
| B. | French scientist |
| C. | Polish scientist |
| D. | American scientist |
| Answer» C. Polish scientist | |
| 45. |
Lowest temperature for a substance to be in gaseous state is |
| A. | atmosphere |
| B. | 273.16 degree negative |
| C. | 208 K |
| D. | 0 degree centigrade |
| Answer» C. 208 K | |
| 46. |
Units of R can be calculated easily by |
| A. | Avogadro's law |
| B. | Dalton's law |
| C. | Archimedes law |
| D. | Boyle's law |
| Answer» B. Dalton's law | |
| 47. |
The advantages of using nitrogen fertilizers do not include |
| A. | soil acidity |
| B. | disruption of nitrogen cycle |
| C. | growth of river plants |
| D. | soil alkalinity |
| Answer» D. soil alkalinity | |
| 48. |
Excluded volume of gas is represented by |
| A. | a |
| B. | c |
| C. | b |
| D. | d |
| Answer» D. d | |
| 49. |
Unit used by meteorologists is |
| A. | centibar |
| B. | millibar |
| C. | millimeter |
| D. | decibar |
| Answer» C. millimeter | |
| 50. |
According to kinetic theory PV is equal to |
| A. | 1/3mN*mean square velocity |
| B. | 1/5mN*mean square velocity |
| C. | 1/37mN*mean square velocity |
| D. | 1/9mN*mean square velocity |
| Answer» B. 1/5mN*mean square velocity | |