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. |
In lock and key model of enzyme action, the substrate fits into |
| A. | enzymatic site |
| B. | active site |
| C. | none |
| D. | specific site |
| Answer» C. none | |
| 2. |
Cl has the electronic configuration of |
| A. | 1s2,2s2,3s2,3p5 |
| B. | 1s2,2s2,2p6,3s2 |
| C. | 1s2,2s2,2p6,3s2,3p5 |
| D. | 1s2,2s2,2p6,3p5 |
| Answer» C. 1s2,2s2,2p6,3s2,3p5 | |
| 3. |
A chromium wire resists 400 Ω at ice point and 420 Ω at steam point, and the resistance of wire is 406 Ω, so the room temperature would be |
| A. | 20 °C |
| B. | 10 °C |
| C. | 40 °C |
| D. | 30 °C |
| Answer» E. | |
| 4. |
The advantages of using nitrogen fertilizers does not include |
| A. | disruption of nitrogen cycle |
| B. | soil acidity |
| C. | All of Above |
| D. | growth of river plants |
| Answer» E. | |
| 5. |
An unmarked alcohol thermometer has l |
| A. | −20 °C |
| B. | −10 °C |
| C. | −40 °C |
| D. | −30 °C |
| Answer» E. | |
| 6. |
Faraday unit is named after a scientist |
| A. | Faraday John |
| B. | Michael Faraday |
| C. | none |
| D. | Samuel faraday |
| Answer» C. none | |
| 7. |
Which one of the following is not a longitudinal wave? |
| A. | Infrasonic wave |
| B. | Ultrasonic wave |
| C. | Seismic wave |
| D. | Infrared wave |
| Answer» E. | |
| 8. |
Which of these Group IV elements does not have strong covalent bonds? |
| A. | Tin (Sn) |
| B. | Carbon (Diamond) |
| C. | Silicon (Si) |
| D. | Germanium (Ge) |
| Answer» E. | |
| 9. |
The thermometer that can measure rapidly changing temperature is |
| A. | Alcohol-in-glass thermometer |
| B. | Mercury-in-glass thermometer |
| C. | Thermocouple thermometer |
| D. | Platinum resistance thermometer |
| Answer» D. Platinum resistance thermometer | |
| 10. |
The range of Vernier calipers is |
| A. | 1 cm to 5cm |
| B. | 1 cm to 10 cm |
| C. | 1 cm to 20 cm |
| D. | 1 cm to 6 cm |
| Answer» C. 1 cm to 20 cm | |
| 11. |
Which one of the ratios are equal to constant (in refraction) |
| A. | sin r (sin i) |
| B. | sin r/sin i |
| C. | sin i |
| D. | /sin r |
| E. | sin i/sin r |
| Answer» E. sin i/sin r | |
| 12. |
The recurrence of the same pattern in periodic table is called its |
| A. | regular pattern |
| B. | periodicity |
| C. | none |
| D. | intervals |
| Answer» C. none | |
| 13. |
Distance between two consecutive compressions and rarefactions is termed as |
| A. | amplitude |
| B. | frequency |
| C. | wave point |
| D. | wavelength |
| Answer» E. | |
| 14. |
Factors which affect the rate of chemical reaction are |
| A. | temperature, catalysts |
| B. | surface area |
| C. | All of Above |
| D. | concentration |
| Answer» D. concentration | |
| 15. |
According to Lord Kelvin the particles in a gas will stop moving and gas will have zero volume at temperature in °C i.e.; |
| A. | −723 |
| B. | −273 |
| C. | −700 |
| D. | −732 |
| Answer» C. −700 | |
| 16. |
The benefits of cryolite |
| A. | improves electrical conductivity |
| B. | dissolves aluminum oxide |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 17. |
Which of the given Halogen has the highest electronegativity? |
| A. | Br |
| B. | F |
| C. | I |
| D. | Cl |
| Answer» C. I | |
| 18. |
The change in energy after removal of one electron from an atom is called |
| A. | ionization energy |
| B. | enthalpy change |
| C. | none |
| D. | electric energy |
| Answer» B. enthalpy change | |
| 19. |
The production of higher yield of ammonia is done by increasing |
| A. | temperature |
| B. | pressure |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 20. |
The reverse process of boiling is |
| A. | solidification |
| B. | boiling |
| C. | sublimation |
| D. | condensation |
| Answer» E. | |
| 21. |
In metalloids of Group IV, the electrical conductivity increases with |
| A. | decrease in temperature |
| B. | increase in temperature |
| C. | None of Above |
| D. | remains constant |
| Answer» C. None of Above | |
| 22. |
As electrons acceptors, strongest halogen is |
| A. | Cl |
| B. | F |
| C. | I |
| D. | Br |
| Answer» C. I | |
| 23. |
If the temperature is decreased, the rate of evaporation would |
| A. | decrease |
| B. | increase |
| C. | may increase or decrease |
| D. | remain same |
| Answer» B. increase | |
| 24. |
The SI unit of length is |
| A. | kilogram |
| B. | meter |
| C. | None of the above |
| D. | kilometer |
| Answer» C. None of the above | |
| 25. |
The ups and downs in the transverse waves are termed as |
| A. | crests and rarefractions |
| B. | compression and rarefaction |
| C. | crests and troughs |
| D. | compressions and troughs |
| Answer» D. compressions and troughs | |
| 26. |
Atom or ion is more reduced when there is |
| A. | higher positive oxidation |
| B. | higher negative oxidation |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 27. |
The distance between two nuclei of the same type of atom is called |
| A. | atomic radius |
| B. | covalent radius |
| C. | none |
| D. | metallic radius |
| Answer» C. none | |
| 28. |
Some primary amines do not have NH2 group at the end and are indicated by |
| A. | alphabets |
| B. | numbering |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 29. |
Due to triple bond between nitrogen molecule it is |
| A. | unreactive |
| B. | polar |
| C. | reactive |
| D. | compressed |
| Answer» B. polar | |
| 30. |
When an object is raised to a certain height above the ground, it possesses |
| A. | Elastic Potential Energy |
| B. | Chemical Potential Energy |
| C. | Kinetic energy |
| D. | Gravitational Potential Energy |
| Answer» E. | |
| 31. |
The noble gas electron configuration was first suggested by |
| A. | Gilbert Lewis |
| B. | Walther Kossel |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 32. |
Real gases do not behave as expected from an |
| A. | noble gas |
| B. | ideal gas |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 33. |
The mixture of hexane and water is |
| A. | immiscible |
| B. | unreactive |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 34. |
Greenhouse is a good example of |
| A. | convection |
| B. | conduction |
| C. | conduction and radiation both |
| D. | radiation |
| Answer» E. | |
| 35. |
After Fluorine(F), which halogen has the higher electronegativity? |
| A. | F |
| B. | I |
| C. | Cl |
| D. | Br |
| Answer» D. Br | |
| 36. |
Dative covalent bond is found in |
| A. | ammonium ion |
| B. | ammonia |
| C. | nitrogen |
| D. | urea |
| Answer» B. ammonia | |
| 37. |
The halogens get less reactive |
| A. | down the groups |
| B. | across the periods |
| C. | d-block |
| D. | f-block |
| Answer» B. across the periods | |
| 38. |
Sulfuric acid is not used in |
| A. | detergents |
| B. | making fertilizers |
| C. | None of Above |
| D. | All of Above |
| Answer» D. All of Above | |
| 39. |
Ethanoyl chloride will react with concentrated ammonia solution to produce |
| A. | ethanoic acid |
| B. | methanamine |
| C. | ethanamide |
| D. | both a and b |
| Answer» D. both a and b | |
| 40. |
The ice point is a point on which |
| A. | water freezes |
| B. | mercury freezes |
| C. | steam condenses |
| D. | ice melts |
| Answer» B. mercury freezes | |
| 41. |
Upon reacting with alkalis, insoluble oxides of non-metals of Period 3 form |
| A. | soluble salts |
| B. | Insoluble salts |
| C. | aqueous solutions |
| D. | H |
| E. | (g) |
| Answer» B. Insoluble salts | |
| 42. |
The number of protons and the number of electrons are always equal in |
| A. | molecules |
| B. | neutral atom |
| C. | compounds |
| D. | ions |
| Answer» C. compounds | |
| 43. |
Physical quantities are also known as |
| A. | Base quantities |
| B. | Derived quantities |
| C. | Energetic quantities |
| D. | Professional quantities |
| Answer» B. Derived quantities | |
| 44. |
The buffers present in blood include |
| A. | hemoglobin |
| B. | HCO3- |
| C. | all of them |
| D. | H2PO4- |
| Answer» D. H2PO4- | |
| 45. |
The incident ray, reflected ray and normal lie at different points is a |
| A. | false law of reflection |
| B. | true law of reflection |
| C. | it |
| D. | neutral law of reflection |
| Answer» B. true law of reflection | |
| 46. |
Which of the following is one of the characteristic of air resistance |
| A. | It decreases with the speed of the object |
| B. | It does not oppose the motion |
| C. | It increases with the density of the air |
| D. | It decreases with the surface area |
| Answer» D. It decreases with the surface area | |
| 47. |
The side chains can be |
| A. | basic |
| B. | acidic |
| C. | both of these |
| D. | None of Above |
| Answer» D. None of Above | |
| 48. |
A non-polar molecule of Bromine at room temperature is found in state |
| A. | liquid |
| B. | solid |
| C. | vapor |
| D. | gas |
| Answer» B. solid | |
| 49. |
Meals can be heat up when camping by the help of |
| A. | auto heating food box |
| B. | self heating food box |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 50. |
The formula of an ionic compound by rule is always its |
| A. | empirical formula |
| B. | molecular formula |
| C. | none |
| D. | both a and b |
| Answer» B. molecular formula | |