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. |
Lone pair of electrons in ammonia are |
| A. | 2 |
| B. | 1 |
| C. | 4 |
| D. | 3 |
| Answer» C. 4 | |
| 2. |
The carbonyl compounds have an odor similar to |
| A. | grapes |
| B. | almonds |
| C. | blue cheese |
| D. | fruits |
| Answer» C. blue cheese | |
| 3. |
Rarefactions are formed where air pressure is |
| A. | lower |
| B. | higher |
| C. | zero |
| D. | normal |
| Answer» B. higher | |
| 4. |
The formula for acceleration is |
| A. | distance covered/time taken |
| B. | change in velocity/time taken |
| C. | change in velocity/displacement covered |
| D. | time taken/change in velocity |
| Answer» C. change in velocity/displacement covered | |
| 5. |
Apple green flames are produced by the compounds of |
| A. | calcium |
| B. | Strontium |
| C. | beryllium |
| D. | barium |
| Answer» E. | |
| 6. |
Raw material for PLA is |
| A. | glucose |
| B. | starch |
| C. | all of them |
| D. | oil |
| Answer» C. all of them | |
| 7. |
Only one replaceable hydrogen atom per molecule is present in |
| A. | monoacid bases |
| B. | monobasic acids |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 8. |
Consider the reaction: P |
| A. | 4 |
| B. | 2 |
| C. | 8 |
| D. | 6 |
| Answer» E. | |
| 9. |
Non-polar alkanes do not react with |
| A. | water |
| B. | polar compounds |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 10. |
In C |
| A. | ρ-bonds |
| B. | linear overlap |
| C. | π-bond |
| D. | σ-bond |
| Answer» C. π-bond | |
| 11. |
The smoke released by car exhaust fumes are of |
| A. | nitrates |
| B. | nitrogen |
| C. | ammonia |
| D. | nitrogen oxides |
| Answer» E. | |
| 12. |
Loss of electrons is found in |
| A. | reduction |
| B. | oxidation |
| C. | All of Above |
| D. | Redox-reaction |
| Answer» C. All of Above | |
| 13. |
Two clouds of electrons in a Pi-bond represent |
| A. | two bonds of 4 electrons |
| B. | one bond of two electrons |
| C. | four bonds with 8 electrons |
| D. | three bonds with 6 electrons |
| Answer» C. four bonds with 8 electrons | |
| 14. |
Additional polymerization will have monomers with no repeating functional units in actual chain which forms |
| A. | products |
| B. | backbone |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 15. |
The molecular formula of different compounds shows actual numbers of |
| A. | molecules |
| B. | atoms |
| C. | All of Above |
| D. | moles |
| Answer» C. All of Above | |
| 16. |
CaCl |
| A. | Covalent bond |
| B. | Ionic bond |
| C. | None of Above |
| D. | metallic bond |
| Answer» C. None of Above | |
| 17. |
Potassium oxide reacts and dissolve in water forming alkaline solutions, hence it is |
| A. | basic oxide |
| B. | acidic oxide |
| C. | di-oxide |
| D. | neutral oxide |
| Answer» B. acidic oxide | |
| 18. |
Most simplified version of displayed formula is called |
| A. | empirical formula |
| B. | molecular formula |
| C. | skeletal formula |
| D. | structural formula |
| Answer» D. structural formula | |
| 19. |
Proteins are found in |
| A. | skin |
| B. | hair |
| C. | all of them |
| D. | tendons |
| Answer» D. tendons | |
| 20. |
The centigrade (Celsius) scale can be converted into Kelvin scale by the formula |
| A. | Ω °C = Temperature in Kelvin - 273 |
| B. | Ω °C = Temperature in Kelvin + 273 |
| C. | Ω °C = Temperature in Fahrenheit - 273 |
| D. | Ω °C = Temperature in Fahrenheit + 273 |
| Answer» B. Ω °C = Temperature in Kelvin + 273 | |
| 21. |
For a constant temperature, Boyles law states that |
| A. | the pressure of a fixed amount of gas is inversely proportional to the volume of the gas |
| B. | the pressure of a fixed amount of gas is directly proportional to the volume of the gas |
| C. | None of the above |
| D. | the pressure of a fixed amount of gas is independent of the volume of the gas |
| Answer» B. the pressure of a fixed amount of gas is directly proportional to the volume of the gas | |
| 22. |
A thermometer has l |
| A. | 17.5 °C |
| B. | 25 °C |
| C. | 50 °C |
| D. | 12.5 °C |
| Answer» E. | |
| 23. |
A method which is used to find amount of particular substance in a solution is called as |
| A. | titration |
| B. | Fragmentation |
| C. | stoichiometry |
| D. | electrolysis |
| Answer» B. Fragmentation | |
| 24. |
The volume of gas is inversely proportional to |
| A. | temperature |
| B. | pressure |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 25. |
The objects that don't produce their own light are called |
| A. | Non-luminous objects |
| B. | Luminous objects |
| C. | Opaque objects |
| D. | Transparent objects |
| Answer» B. Luminous objects | |
| 26. |
Commonly transition elements have high |
| A. | melting points |
| B. | densities |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 27. |
If a bulb uses energy of 100 J and remains on for 25 s, the power consumed by the bulb will be |
| A. | 4 W |
| B. | 125 W |
| C. | 75 W |
| D. | 2500 W |
| Answer» B. 125 W | |
| 28. |
The moment of force is 8 N m and the distance of pivot from the handle is 2 N, the force applied would be |
| A. | 10 N |
| B. | 4 N |
| C. | 16 N |
| D. | 6 N |
| Answer» C. 16 N | |
| 29. |
The Acyl chloride react with nucleophile breaking C-Cl bond producing white fumes of |
| A. | carbon chloride |
| B. | hydrogen chloride |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 30. |
The bond length is C=C is |
| A. | 0.143 |
| B. | 0.154 |
| C. | 0.116 |
| D. | 0.134 |
| Answer» E. | |
| 31. |
An acidic oxide |
| A. | reacts well with acids |
| B. | reacts well with water |
| C. | water, acids and bases all three |
| D. | reacts well with bases |
| Answer» E. | |
| 32. |
Polymers whose monomers are bonded to each other by ester link are called |
| A. | peptides |
| B. | amides |
| C. | polyesters |
| D. | polyamides |
| Answer» D. polyamides | |
| 33. |
Amines in which alkyl group is bonded amines are |
| A. | secondary amines |
| B. | primary amines |
| C. | all of them |
| D. | tertiary amines |
| Answer» C. all of them | |
| 34. |
Vanillin is used to give flavor in |
| A. | chocolate |
| B. | ice-cream |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 35. |
Resulting a loss of electrons forms |
| A. | negative ions |
| B. | positive ions |
| C. | anodes |
| D. | cathodes |
| Answer» C. anodes | |
| 36. |
Deceleration is also known as |
| A. | acceleration |
| B. | retardation |
| C. | inertia |
| D. | opposite velocity |
| Answer» C. inertia | |
| 37. |
The sodium burns with the flame of color |
| A. | red |
| B. | blue |
| C. | apple green |
| D. | yellow |
| Answer» E. | |
| 38. |
Bromine reacts with phenol and decolorize orange color and turns it to |
| A. | pink precipitate |
| B. | white precipitate |
| C. | none |
| D. | blue precipitate |
| Answer» C. none | |
| 39. |
Every substance in our world is made up of |
| A. | electrons |
| B. | matter |
| C. | chemical elements |
| D. | protons |
| Answer» D. protons | |
| 40. |
A machine uses total energy of 5000 J and within the process one-fourth of the energy is lost to the surroundings. The efficiency of the machine is |
| A. | 0.5 |
| B. | 0.25 |
| C. | 0.9 |
| D. | 0.75 |
| Answer» E. | |
| 41. |
Rocks for building are made by blocks using mortar with the element |
| A. | limestone |
| B. | carbon |
| C. | sulfur |
| D. | silicon |
| Answer» B. carbon | |
| 42. |
The amount of heat required to raise the temperature of 1 kg of a substance by 1 K or 1 °C is termed as |
| A. | Specific heat capacity |
| B. | Heat capacity |
| C. | Specific latent heat capacity |
| D. | Latent heat capacity |
| Answer» B. Heat capacity | |
| 43. |
Magnesium and Aluminum burns with bright white flames and reacts vigorously when heated with |
| A. | oxygen |
| B. | nitrogen |
| C. | sulfuric acid |
| D. | carbon dioxide |
| Answer» B. nitrogen | |
| 44. |
A cube-shaped block of pinewood has a surface area of 9 m |
| A. | 4500 kg |
| B. | 4500 g |
| C. | 13500 kg |
| D. | 13500 g |
| Answer» D. 13500 g | |
| 45. |
The energy in the waves is transfer and the medium is |
| A. | not transferred |
| B. | also transferred |
| C. | may transfer or may not transfer |
| D. | medium does not exist |
| Answer» B. also transferred | |
| 46. |
The minimum length an instrument can measure is called its |
| A. | estimate |
| B. | accuracy |
| C. | limitations |
| D. | precision |
| Answer» E. | |
| 47. |
The substrate must have the |
| A. | correct shape to fit the active site of the enzyme |
| B. | correct size to fit the active site of the enzyme |
| C. | None of Above |
| D. | both of these |
| Answer» E. | |
| 48. |
The noble gases which exists as isolated atoms are |
| A. | argon |
| B. | neon |
| C. | oxygen |
| D. | both a and b |
| Answer» E. | |
| 49. |
The strongest type of intermolecular force is called as |
| A. | van der vaal forces |
| B. | hydrogen bonding |
| C. | dipole-dipole forces |
| D. | dipole reaction |
| Answer» C. dipole-dipole forces | |
| 50. |
The oxidation number of sulpher dioxide is |
| A. | +4 |
| B. | +2 |
| C. | +8 |
| D. | +6 |
| Answer» B. +2 | |