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. |
A single Pi-bond can be drawn as |
| A. | double cloud of electrons |
| B. | a single cloud of electrons |
| C. | None of Above |
| D. | a triple cloud of electrons |
| Answer» C. None of Above | |
| 2. |
The thermocouple thermometer uses |
| A. | Ammeter |
| B. | Voltmeter |
| C. | Manometer |
| D. | Galvanometer |
| Answer» C. Manometer | |
| 3. |
For most of the people, human reaction error is about |
| A. | 0.3 s |
| B. | 0.03 s |
| C. | 30 s |
| D. | 3 s |
| Answer» B. 0.03 s | |
| 4. |
In Physics' a common instrument to measure diameter of a circle is known as |
| A. | measuring tape |
| B. | rule |
| C. | inch tape |
| D. | calipers |
| Answer» E. | |
| 5. |
Species with higher oxidation are always written in an equation on the |
| A. | right hand side |
| B. | left hand side |
| C. | nowhere |
| D. | middle |
| Answer» C. nowhere | |
| 6. |
The ionization energy between last element of one period and first element of next period receives a rapid |
| A. | decrease |
| B. | increase |
| C. | neutral |
| D. | constancy |
| Answer» B. increase | |
| 7. |
Polypeptides bear long molecules hence they are represented shorthand by |
| A. | numerals |
| B. | three letter abbreviation |
| C. | all of them |
| D. | Roman numbers |
| Answer» C. all of them | |
| 8. |
The hypothesis that the equal volume of all gases possess the same number of molecules is called as |
| A. | Avogadro hypothesis |
| B. | Avogadro constant |
| C. | none |
| D. | both a and b |
| Answer» B. Avogadro constant | |
| 9. |
When a Group II nitrate is heated, toxic NO |
| A. | brown fumes |
| B. | black fumes |
| C. | white fumes |
| D. | blue fumes |
| Answer» B. black fumes | |
| 10. |
Carboxylic acids produce salt plus water by reacting with |
| A. | bases |
| B. | acids |
| C. | water |
| D. | alkalis |
| Answer» B. acids | |
| 11. |
The excellent equilibrium yield of SO3 at 450 °C is |
| A. | 0.2 |
| B. | 0.1 |
| C. | 0.97 |
| D. | 0.79 |
| Answer» D. 0.79 | |
| 12. |
The molecular structure of SF |
| A. | tetrahedral |
| B. | linear |
| C. | octahedral |
| D. | hexagonal |
| Answer» D. hexagonal | |
| 13. |
An aluminum wire resists 70 Ω at ice point and 120 Ω at steam point, and the resistance of wire is 90 Ω the room temperature would be |
| A. | 20 °C |
| B. | 10 °C |
| C. | 40 °C |
| D. | 30 °C |
| Answer» D. 30 °C | |
| 14. |
Two chemical related species will undergo Redox reaction if they are in different |
| A. | reducing states |
| B. | oxidation states |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 15. |
The atom of aluminum has the number of neutrons |
| A. | 27 |
| B. | 13 |
| C. | 13 |
| D. | 14 |
| Answer» E. | |
| 16. |
The ordinary dry cells are used in |
| A. | torches |
| B. | toys |
| C. | car |
| D. | both a and b |
| Answer» E. | |
| 17. |
Which one of the following varies due to gravitational pull variations? |
| A. | Time |
| B. | Mass |
| C. | acceleration |
| D. | Weight |
| Answer» E. | |
| 18. |
The most common polyester used is known as |
| A. | nylon |
| B. | Terylene |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 19. |
In which lens are the light rays are spread out? |
| A. | Diverging lens |
| B. | Converging lens |
| C. | None of the lenses |
| D. | Both lenses |
| Answer» B. Converging lens | |
| 20. |
Liquid-in-glass thermometer has |
| A. | wide range |
| B. | unlimited range |
| C. | no range |
| D. | limited range |
| Answer» E. | |
| 21. |
Occurrence of three species at a same time is unlikely to be found because they will |
| A. | attract |
| B. | collide |
| C. | repel |
| D. | react |
| Answer» C. repel | |
| 22. |
The amino acids used to build proteins in cells can be distinguished through |
| A. | C=O bonding |
| B. | C-OH side chain |
| C. | C-H chain |
| D. | side chain of R groups |
| Answer» E. | |
| 23. |
There are three kinds of equilibrium, which one of the following is the odd one out? |
| A. | Metastable equilibrium |
| B. | Stable equilibrium |
| C. | Neutral equilibrium |
| D. | Unstable equilibrium |
| Answer» B. Stable equilibrium | |
| 24. |
Force acting on a smaller area exerts |
| A. | more pressure |
| B. | less pressure |
| C. | heat |
| D. | no pressure |
| Answer» B. less pressure | |
| 25. |
The difference in potential between metal ion system and another system is called |
| A. | electrode potential |
| B. | electrode difference |
| C. | both a and b |
| D. | potential difference |
| Answer» B. electrode difference | |
| 26. |
Benzene-1,4-dicarboxylic acid and ethan-1,2 diol react together to make |
| A. | Terylene |
| B. | polyester |
| C. | nylon |
| D. | both a and b |
| Answer» E. | |
| 27. |
Ester get fully hydrolyzed when it is refluxed with an |
| A. | base |
| B. | acid |
| C. | all of them |
| D. | alkali |
| Answer» E. | |
| 28. |
Ketones are formed by the oxidation of |
| A. | secondary alcohol |
| B. | primary alcohols |
| C. | amines |
| D. | tertiary alcohol |
| Answer» B. primary alcohols | |
| 29. |
Halogens are present in group |
| A. | VI |
| B. | V |
| C. | II |
| D. | VII |
| Answer» E. | |
| 30. |
Reduction in efficiency of cars by 20 percent is a |
| A. | negative effect of friction |
| B. | positive effect of friction |
| C. | combined effect (positive and negative both) |
| D. | neutral effect |
| Answer» B. positive effect of friction | |
| 31. |
Exothermic enthalpy changes are shown as |
| A. | positive values |
| B. | negative values |
| C. | constant |
| D. | neutral |
| Answer» C. constant | |
| 32. |
The composition of a standard hydrogen electrode is |
| A. | H+ ions |
| B. | hydrogen gas |
| C. | all of them |
| D. | platinum electrode |
| Answer» D. platinum electrode | |
| 33. |
Factories producing fertilizers usually have plants of |
| A. | nitric acid production |
| B. | ammonia production |
| C. | all of them |
| D. | ammonium nitrate production |
| Answer» D. ammonium nitrate production | |
| 34. |
Each sub-shell has at least one or two |
| A. | axis |
| B. | atomic orbital's |
| C. | zones |
| D. | lobes |
| Answer» C. zones | |
| 35. |
The specific latent heat of fusion is |
| A. | the amount of heat required to change the phase of a substance from solid to liquid without any chan |
| B. | the amount of heat required to raise the temperature of a 1 kg of a substance by 1 K |
| C. | the amount of heat required to change the phase of a 1 kg of substance from liquid to gas without an |
| D. | the amount of heat required to change the phase of a 1 kg of substance from solid to liquid without |
| Answer» E. | |
| 36. |
Hydrogen is also obtained as by-product of cracking of heavy fractions from |
| A. | crude oil |
| B. | coal |
| C. | all of them |
| D. | petrol |
| Answer» B. coal | |
| 37. |
Six carbon atoms bonded together in particular way making hexagon reflects a |
| A. | aldehydes |
| B. | benzene ring |
| C. | carboxylic |
| D. | ketone |
| Answer» C. carboxylic | |
| 38. |
If different functional groups are present it is termed as |
| A. | functional group isomerism |
| B. | position isomerism |
| C. | all of them |
| D. | chain isomerism |
| Answer» B. position isomerism | |
| 39. |
Brine is gained from dissolving rock salt in |
| A. | base |
| B. | acid |
| C. | water |
| D. | alcohol |
| Answer» D. alcohol | |
| 40. |
The Centigrade (Celsius) scale has two fixed points which are |
| A. | ice point and steam point |
| B. | Melting point and boiling point |
| C. | subliming point and solidifying point |
| D. | condensing point and freezing point |
| Answer» B. Melting point and boiling point | |
| 41. |
Which of the following is not the characteristic of air resistance |
| A. | It decrease with the speed of the object |
| B. | It always opposes the motion |
| C. | It increases with the density of the air |
| D. | It increases with the surface area |
| Answer» B. It always opposes the motion | |
| 42. |
The bond breaking in which the atoms at each end of bond is left with one electron from the pair forming covalent bond is |
| A. | heterolytic fission |
| B. | homolytic fission |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 43. |
Consider the reaction: Na(s) + O |
| A. | 2 |
| B. | 1 |
| C. | 4 |
| D. | 3 |
| Answer» D. 3 | |
| 44. |
Among their own selves the molecules or amino acids |
| A. | repel |
| B. | react |
| C. | fuse |
| D. | dissolve |
| Answer» C. fuse | |
| 45. |
Farmers raise the pH of acidic soil by using |
| A. | slake lime |
| B. | limestone |
| C. | none |
| D. | both a and b |
| Answer» B. limestone | |
| 46. |
The estimated range of voltage of ordinary dry cells is |
| A. | 1.2-5V |
| B. | 1.5-5V |
| C. | 2V |
| D. | 1.5-2V |
| Answer» E. | |
| 47. |
Which one of the waves cannot be seen through electromagnetic spectrum? |
| A. | micro waves |
| B. | radio waves |
| C. | ultraviolet waves |
| D. | infrared waves |
| Answer» D. infrared waves | |
| 48. |
A concrete pole of mass 50 kg was lifted up at a height of 12 m, taking the gravitational pull of earth, the E |
| A. | 6000 J |
| B. | 2.4 J |
| C. | 5 J |
| D. | 60 J |
| Answer» B. 2.4 J | |
| 49. |
In the Period table, the elements with 2 electrons in the outermost principal quantum shell are present in |
| A. | Period III |
| B. | Period II |
| C. | Group III |
| D. | Group II |
| Answer» E. | |
| 50. |
In which of the following, Kinetic energy is the highest and intermolecular bonds are the weakest? |
| A. | Gel |
| B. | Solid |
| C. | Gas |
| D. | Liquid |
| Answer» D. Liquid | |