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. |
Cations are much smaller than their |
| A. | molecules |
| B. | atoms |
| C. | All of Above |
| D. | protons |
| Answer» C. All of Above | |
| 2. |
The theory that 'all the object falling under gravity accelerate at the same constant rate' was discovered by |
| A. | Robert Hooke |
| B. | Albert Einstein |
| C. | Galileo Galilei |
| D. | Sir Isaac Newton |
| Answer» D. Sir Isaac Newton | |
| 3. |
1 faraday is equal to |
| A. | 12700C |
| B. | 96500 C |
| C. | 96000C |
| D. | 987690C |
| Answer» C. 96000C | |
| 4. |
If ethene is reactant then the product will be |
| A. | triol |
| B. | ethanol |
| C. | propanol |
| D. | butanol |
| Answer» C. propanol | |
| 5. |
Which of the given Halogen has the lowest electronegativity? |
| A. | Cl |
| B. | Br |
| C. | F |
| D. | I |
| Answer» E. | |
| 6. |
Under standard conditions common metallic form of tin is |
| A. | white tin |
| B. | grey tin |
| C. | none |
| D. | both a and b |
| Answer» B. grey tin | |
| 7. |
The naming of compounds was given by German chemist |
| A. | John |
| B. | Alfred Stock |
| C. | none |
| D. | J.J Thomson |
| Answer» C. none | |
| 8. |
A constant force on an object given by the product of the force and the distance moved by the object in the direction of the force is termed as |
| A. | Efficiency |
| B. | Work done |
| C. | Energy |
| D. | Power |
| Answer» C. Energy | |
| 9. |
Hydrogen atom has an approximate diameter of |
| A. | 10-10m |
| B. | 10-9m |
| C. | none |
| D. | 9-10m |
| Answer» C. none | |
| 10. |
The pathway of electron is called |
| A. | orbital |
| B. | orbit |
| C. | electric path |
| D. | axis |
| Answer» B. orbit | |
| 11. |
Zwitterion ions are |
| A. | soluble in water |
| B. | crystalline solid |
| C. | all of them |
| D. | amphoteric |
| Answer» D. amphoteric | |
| 12. |
Ammonia and amides will produce salts on reacting with |
| A. | dilute HCl |
| B. | water |
| C. | all of them |
| D. | ethylamine |
| Answer» B. water | |
| 13. |
Metals can be hammered into different shapes and drawn into wires hence they are |
| A. | malleable |
| B. | soft |
| C. | weaker |
| D. | strong |
| Answer» B. soft | |
| 14. |
The potential component of internal energy is due to |
| A. | the stretch and compression of intermolecular bonds as the particles vibrate |
| B. | the stretch and compression of intermolecular bonds as the particles are heated |
| C. | the stretch of the intermolecular bonds as the particles are heated |
| D. | the stretch and compression of intermolecular bonds as the particle collide |
| Answer» B. the stretch and compression of intermolecular bonds as the particles are heated | |
| 15. |
Electrons occupy separate orbital within the same sub-shell to reduce |
| A. | repulsion |
| B. | attraction |
| C. | conductivity |
| D. | polarity |
| Answer» B. attraction | |
| 16. |
The bond energy of C=O bond is |
| A. | 610kJ/mol |
| B. | 350 kJ/mol |
| C. | 740kJ/mol |
| D. | 360kJ/mol |
| Answer» D. 360kJ/mol | |
| 17. |
The weak forces of attraction which exists in a molecule like Bromine are called |
| A. | van der vaal forces |
| B. | dipole moment |
| C. | All of Above |
| D. | hydrogen bonding |
| Answer» B. dipole moment | |
| 18. |
Wide range of different hydrocarbons are separated into fractions in |
| A. | fractional distillation |
| B. | fractional decomposition |
| C. | none |
| D. | both a and b |
| Answer» B. fractional decomposition | |
| 19. |
When rate of gain of electrons will be equal to loss of electrons state obtained will be |
| A. | neutral |
| B. | Redox equilibrium |
| C. | unstable |
| D. | constant |
| Answer» C. unstable | |
| 20. |
Reaction of Acyl chlorides with alcohols and phenols will give |
| A. | carboxylates |
| B. | esters |
| C. | all of them |
| D. | water |
| Answer» C. all of them | |
| 21. |
The waxy layer of plants are attacked which increases water loss hence making it prone to pest and bacteria which is due to |
| A. | acid rain |
| B. | chemicals |
| C. | all of them |
| D. | fertilizers |
| Answer» B. chemicals | |
| 22. |
The reaction between phenyl amine and nitrous acid producing diazonium ion while making azo dye is called |
| A. | desorption |
| B. | denaturation |
| C. | all of them |
| D. | diazotization |
| Answer» E. | |
| 23. |
A pendulum bob moves at a speed of 2 m s |
| A. | 0.25 J |
| B. | 1 J |
| C. | 2 J |
| D. | 0.5 J |
| Answer» C. 2 J | |
| 24. |
Low boiling points of Halogens indicate that the molecular structure is |
| A. | giant molecules |
| B. | giant metallic structure |
| C. | None of Above |
| D. | simple molecules |
| Answer» E. | |
| 25. |
Kilograms is the unit of |
| A. | Tension |
| B. | Weight |
| C. | Mass |
| D. | Resistance |
| Answer» D. Resistance | |
| 26. |
Avogadro constant is the number which was first calculated by |
| A. | Amedeo Avogadro |
| B. | Joseph Loschmidt |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 27. |
In Group IV, an increase in temperature may cause |
| A. | decrease in the conductivity of metals |
| B. | increase in the conductivity of metals |
| C. | None of Above |
| D. | Conductivity does not change |
| Answer» B. increase in the conductivity of metals | |
| 28. |
Which one of the given compounds with same number of electrons, have lower boiling point? |
| A. | pentane |
| B. | 2,2 dimethyl propane |
| C. | both of these |
| D. | None of Above |
| Answer» C. both of these | |
| 29. |
While going through a heap of junk in her garage, Jackie found an uncalibrated mercury thermometer. After a few experiments, she succeeded in calibrating it. Her notes show that the ice point of the thermometer corresponds to 3 cm while the steam point corresponds to 30 cm of mercury. If Jackies calculations are fine then length = 15 cm would correspond to |
| A. | 44 °C |
| B. | 46 °C |
| C. | 40 °C |
| D. | 42 °C |
| Answer» B. 46 °C | |
| 30. |
By refluxing excess sodium hydroxide the salts produced will be of |
| A. | amino ethanoic acid |
| B. | 2-amino carboxylic acids% |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 31. |
The mass of each element in a compound helps in determining of |
| A. | molecular formula |
| B. | empirical formula |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 32. |
No free radicals are produced in the step of |
| A. | propagation step |
| B. | initiation step |
| C. | all of them |
| D. | termination step |
| Answer» E. | |
| 33. |
Amides give products of sodium salt of caboxylic acid and primary amine in presence on aqueous sodium hydroxide by reacting with |
| A. | bases |
| B. | acids |
| C. | metals |
| D. | alkalis |
| Answer» E. | |
| 34. |
The ratio of oxygen to hydrogen in a water molecule is equal to |
| A. | 0.0430555555555556 |
| B. | 0.0423611111111111 |
| C. | 0.0555555555555556 |
| D. | 0.0486111111111111 |
| Answer» D. 0.0486111111111111 | |
| 35. |
The carbon or graphite rod which is used to conduct electricity in electrolyte is called |
| A. | anode |
| B. | electrode |
| C. | All of Above |
| D. | cathode |
| Answer» D. cathode | |
| 36. |
Acidic foods are mostly preserved by help of solution made from |
| A. | ammonium nitrate |
| B. | sulfur dioxide |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 37. |
The quality to attact electrons and distort an anion is called |
| A. | ion power |
| B. | charge power |
| C. | polarizing power |
| D. | lattice power |
| Answer» D. lattice power | |
| 38. |
The released energy when gaseous ions dissolves in water is called enthalpy change of |
| A. | hydration |
| B. | solution |
| C. | electron affinity |
| D. | atomization |
| Answer» B. solution | |
| 39. |
The unit for latent heat is |
| A. | Joules |
| B. | Watts |
| C. | Pascals |
| D. | Ohms |
| Answer» B. Watts | |
| 40. |
1 °C is equal to |
| A. | Temperature in Fahrenheit + 273 |
| B. | Temperature in kelvin + 273 |
| C. | Temperature in Fahrenheit - 273 |
| D. | Temperature in kelvin - 273 |
| Answer» E. | |
| 41. |
Ionic bonding is very strong hence it needs a |
| A. | low temperatures |
| B. | high temperatures |
| C. | high pressure |
| D. | constant temperature |
| Answer» C. high pressure | |
| 42. |
The platinum electrode is inert hence its part in reaction is |
| A. | none |
| B. | more |
| C. | often |
| D. | neutral |
| Answer» B. more | |
| 43. |
Attractions of electrons towards anode shows |
| A. | electrons carry very small mass |
| B. | electrons are negatively charged |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 44. |
The temperature of the core of the earth is equal to 3727 °C. This temperature in Kelvins is equal to |
| A. | 3727 K |
| B. | 4000 K |
| C. | None of the above |
| D. | 3454 K |
| Answer» C. None of the above | |
| 45. |
Ethanol is biofuel and are said to be |
| A. | hydrogen neutral |
| B. | carbon neutral |
| C. | all of them |
| D. | oxygen neutral |
| Answer» C. all of them | |
| 46. |
The amount of thermal energy required to change a solid to liquid state and vice versa without any change if temperature is termed as |
| A. | Latent Heat of Vaporization |
| B. | Latent Heat of Fusion |
| C. | Specific Heat Capacity |
| D. | Heat Capacity |
| Answer» C. Specific Heat Capacity | |
| 47. |
If the acceleration and deceleration of an object is zero, |
| A. | there is no force because there is no acceleration or deceleration |
| B. | force is still acting on it, even if the object is stationary |
| C. | force is still acting on it because the object is moving with constant velocity |
| D. | there is no force because the object is not moving |
| Answer» D. there is no force because the object is not moving | |
| 48. |
In S |
| A. | +2 |
| B. | +1 |
| C. | +4 |
| D. | +3 |
| Answer» C. +4 | |
| 49. |
The highly reactive element which can burn glass, metals and water in stream of gas is even when cold is |
| A. | fluorine |
| B. | iodine |
| C. | bromine |
| D. | chlorine |
| Answer» B. iodine | |
| 50. |
If an unmarked alcohol thermometer has l |
| A. | 60 °C |
| B. | 50 °C |
| C. | 10 °C |
| D. | 75 °C |
| Answer» C. 10 °C | |