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. |
What is the bond order of N2+? |
| A. | 3 |
| B. | 1.5 |
| C. | 2.5 |
| D. | 2 |
| Answer» D. 2 | |
| 2. |
What is the bond angle (in degrees) in the structure of a benzene molecule?_x005F_x000D_ |
| A. | 60_x005F_x000D_ |
| B. | 150_x005F_x000D_ |
| C. | 90_x005F_x000D_ |
| D. | 120 |
| Answer» E. | |
| 3. |
What is the base of the Octal Numeral System? |
| A. | 8 |
| B. | 16 |
| C. | 32 |
| D. | 64 |
| Answer» B. 16 | |
| 4. |
What is the atomic mass of Zirconium?_x005F_x000D_ |
| A. | 91.22 |
| B. | 89.22 |
| C. | 88.22 |
| D. | 90.22 |
| Answer» B. 89.22 | |
| 5. |
What is the atomicity of Phosphorous? |
| A. | Di-atomic |
| B. | Poly-atomic |
| C. | Tetra-atomic |
| D. | Mono-atomic |
| Answer» D. Mono-atomic | |
| 6. |
What is the action of dry HCl gas on dry litmus paper? |
| A. | Blue litmus paper turns white |
| B. | Blue or red litmus paper does not change its colour |
| C. | Blue litmus paper turns red |
| D. | Red litmus paper turns blue |
| Answer» C. Blue litmus paper turns red | |
| 7. |
What is C6H6 ?_x005F_x000D_ |
| A. | Hydro carbon |
| B. | Hydro chloric acid |
| C. | Benzene |
| D. | Aspirin |
| Answer» D. Aspirin | |
| 8. |
What is formed when helium atom loses one electron?_x005F_x000D_ |
| A. | Proton |
| B. | Positive helium ion |
| C. | Negative helium ion |
| D. | Alpha particle |
| Answer» C. Negative helium ion | |
| 9. |
What is Sublimation?_x005F_x000D_ |
| A. | It is the process of conversion of a liquid into gas. |
| B. | It is the process of conversion of a solid into liquid. |
| C. | It is the process of conversion of a solid into vapour. |
| D. | It is the process of conversion of a gas into liquid. |
| Answer» D. It is the process of conversion of a gas into liquid. | |
| 10. |
What is nature of pH of Milk? |
| A. | Slightly Acidic |
| B. | Slightly Basic |
| C. | Highly Acidic |
| D. | Highly Basic |
| Answer» B. Slightly Basic | |
| 11. |
What is formed when Carbon Dioxide is passed through Lime Water? |
| A. | Copper Sulphate |
| B. | Calcium Carbonate |
| C. | Magnesium Oxide |
| D. | Baking Soda |
| Answer» C. Magnesium Oxide | |
| 12. |
What is dry ice? |
| A. | Solid Carbon dioxide |
| B. | Solid Nitrogen dioxide |
| C. | Solid Sulphur dioxide |
| D. | Solid Water |
| Answer» B. Solid Nitrogen dioxide | |
| 13. |
What is dehydration? |
| A. | Removal of acid from a molecule |
| B. | Removal of base from a molecule |
| C. | Removal of water from a molecule |
| D. | Removal of alkali from a molecule |
| Answer» D. Removal of alkali from a molecule | |
| 14. |
What is contained in Chlorophyll ? |
| A. | sodium |
| B. | potassium |
| C. | manganese |
| D. | magnesium |
| Answer» E. | |
| 15. |
What is C12H22O11 also known as |
| A. | Sand |
| B. | Sugar |
| C. | Salt |
| D. | Clay |
| Answer» C. Salt | |
| 16. |
What is an exothermic reaction? |
| A. | Reaction in which heat is released. |
| B. | Reaction in which heat is absorbed. |
| C. | Reaction in which neither heat is released nor absorbed. |
| D. | None |
| Answer» B. Reaction in which heat is absorbed. | |
| 17. |
What is an endothermic reaction? |
| A. | Reaction in which heat is released. |
| B. | Reaction in which heat is absorbed. |
| C. | Reaction in which neither heat is released nor absorbed. |
| D. | None of these |
| Answer» C. Reaction in which neither heat is released nor absorbed. | |
| 18. |
What is a normal pH level in blood? |
| A. | 7.35 - 7.45 |
| B. | 7.45 - 7.55 |
| C. | 7.6 - 7.7 |
| D. | 7 - 7.10 |
| Answer» B. 7.45 - 7.55 | |
| 19. |
What important polymer is located in the nucleus? |
| A. | Ribosomes |
| B. | Chromosomes |
| C. | DNA |
| D. | Proteins |
| Answer» D. Proteins | |
| 20. |
What happens when one S and one P orbital is hybridized? |
| A. | We get three orbitals in a plane |
| B. | We get two orbitals at 180 degrees |
| C. | We get two mutually perpendicular orbitals |
| D. | We get four orbitals directed tetrahedrally |
| Answer» C. We get two mutually perpendicular orbitals | |
| 21. |
What happens to electrons in an ionic bond? |
| A. | collision of electrons |
| B. | Sharing of electrons |
| C. | Both A & B |
| D. | Transfer of electrons |
| Answer» E. | |
| 22. |
What happens when two atoms form a chemical bond? |
| A. | Two atoms fuse together to form a chemical bond |
| B. | The atoms share or transfer electrons |
| C. | A chemical bond forms when two atoms transfer or share protons to achieve a stable nucleus |
| D. | Like charges in the atoms cause them to stick together |
| Answer» C. A chemical bond forms when two atoms transfer or share protons to achieve a stable nucleus | |
| 23. |
What happens in an oxidation reaction? |
| A. | Protons are lost. |
| B. | Electrons are lost |
| C. | Neutrons are lost. |
| D. | Electrons are gained. |
| Answer» C. Neutrons are lost. | |
| 24. |
What happens as we go down the group in the periodic table? |
| A. | The number of shells decreases |
| B. | Valence electrons decreases |
| C. | The number of shells increases |
| D. | Atomic size decreases |
| Answer» D. Atomic size decreases | |
| 25. |
What element is used to disinfect swimming pools? |
| A. | Fluorine |
| B. | Chlorine |
| C. | Bromine |
| D. | Sulphur |
| Answer» C. Bromine | |
| 26. |
What enables an electric current to flow in a circuit?_x005F_x000D_ |
| A. | The motion of electrons |
| B. | The motion of neutrons |
| C. | The motion of positrons |
| D. | The motion of protons |
| Answer» B. The motion of neutrons | |
| 27. |
What element is found in all organic compounds? |
| A. | Hydrogen |
| B. | Calcium |
| C. | Nitrogen |
| D. | Carbon |
| Answer» E. | |
| 28. |
What element behaves most like magnesium? |
| A. | Silicon |
| B. | Strontium |
| C. | Sulphur |
| D. | Tin |
| Answer» C. Sulphur | |
| 29. |
What does one mole of H2O correspond to |
| A. | 16 gms |
| B. | 18 gms |
| C. | 20 gms |
| D. | 22 gms |
| Answer» C. 20 gms | |
| 30. |
What does the Aufbau Principle state |
| A. | Electrons will be added to an atom starting from the lowest possible level or sublevel. |
| B. | Electrons will be added to an atom only if the orbitals are different colors. |
| C. | Electrons will be added to an atom in a random order. |
| D. | Electrons will be added to an atom in a symmetrical manner. |
| Answer» B. Electrons will be added to an atom only if the orbitals are different colors. | |
| 31. |
What does a catalyst do in a reaction?_x005F_x000D_ |
| A. | A catalyst is nothing but the final product of a reaction |
| B. | Does not alter the rate of reaction |
| C. | Speeds up chemical reaction |
| D. | Slows down chemical reaction |
| Answer» E. | |
| 32. |
What determines the mass number of an element? |
| A. | Number of protons |
| B. | Number of electrons and protons |
| C. | Number of protons and neutrons |
| D. | Number of neitrons |
| Answer» D. Number of neitrons | |
| 33. |
What change will occur to the pH of a solution if its Hydrogen ion concentration is increased?_x005F_x000D_ |
| A. | The pH will decrease. |
| B. | The pH will first increase and after some time, decrease. |
| C. | The pH will remain the same. |
| D. | The pH will increase. |
| Answer» B. The pH will first increase and after some time, decrease. | |
| 34. |
What chemical is injected into a person's body when an ant bites? |
| A. | Formic Acid |
| B. | Acetic Acid |
| C. | Tartaric Acid |
| D. | Citric Acid |
| Answer» B. Acetic Acid | |
| 35. |
What charge is present on a neutron? |
| A. | positive |
| B. | negative_x005F_x000D_ |
| C. | no charge |
| D. | No option is correct |
| Answer» D. No option is correct | |
| 36. |
What are transition elements? |
| A. | Elements whose two outermost shells are incomplete |
| B. | Elements which possess properties of both, metals and non-metals |
| C. | They have eight electrons in the outermost shell |
| D. | Elements whose three outermost shells are incomplete |
| Answer» B. Elements which possess properties of both, metals and non-metals | |
| 37. |
What are the Monomers that make up Proteins? |
| A. | Amino acids |
| B. | Nucleotides |
| C. | Disaccharides |
| D. | Chaperones |
| Answer» B. Nucleotides | |
| 38. |
What are the main components of Brass Alloy? |
| A. | Copper and Zinc |
| B. | Copper and Strontium |
| C. | Copper, Zinc and Nickel |
| D. | Copper and Nickel |
| Answer» B. Copper and Strontium | |
| 39. |
What are stars primarily made of? |
| A. | Oxygen and Hydrogen |
| B. | Hydrogen and Carbon |
| C. | Hydrogen and Helium |
| D. | Oxygen and Helium |
| Answer» D. Oxygen and Helium | |
| 40. |
What are the end products of cellular respiration? |
| A. | ATP, Glucose |
| B. | Glucose, Oxygen |
| C. | Oxygen, Water |
| D. | ATP, Water |
| Answer» E. | |
| 41. |
What are long chains of Carbon Molecules called |
| A. | Ribosomes |
| B. | Hydrocarbons |
| C. | Polymers |
| D. | None |
| Answer» D. None | |
| 42. |
What are isobars? |
| A. | Elements with same atomic number but different mass number |
| B. | Elements with different atomic number but same mass number |
| C. | Elements with different atomic number and different mass number |
| D. | Elements with same atomic number and same mass number |
| Answer» C. Elements with different atomic number and different mass number | |
| 43. |
What are Aldehydes ? |
| A. | Mild oxidising agents |
| B. | Strong oxidising agents |
| C. | Strong reducing agents |
| D. | Mild reducing agents |
| Answer» D. Mild reducing agents | |
| 44. |
What are elements F, Cl, Br, I and At commonly known as? |
| A. | Transition elements |
| B. | Halogens |
| C. | Rare earth elements |
| D. | Actinoids |
| Answer» C. Rare earth elements | |
| 45. |
Wavelength of which of the following colours of the visible spectrum of light are maximally  absorbed by green plants________ |
| A. | Green and Yellow |
| B. | Red and Blue |
| C. | Green and Red |
| D. | Blue and Yellow |
| Answer» C. Green and Red | |
| 46. |
Water is an example of? |
| A. | Element |
| B. | Molecule |
| C. | Compound |
| D. | Both B & C |
| Answer» E. | |
| 47. |
Washing soda is used ______._x005F_x000D_ Â _x005F_x000D_ I. for removing permanent hardness of water_x005F_x000D_ Â _x005F_x000D_ II. for disinfecting drinking water_x005F_x000D_ Â _x005F_x000D_ III. as a cleaning agent for domestic purpose_x005F_x000D_ |
| A. | Only I and II |
| B. | Only I and III |
| C. | Only II and III |
| D. | All I, II and III |
| Answer» C. Only II and III | |
| 48. |
Water always contains hydrogen and oxygen in the ratio 1:8 by weight.This is in accordance with the |
| A. | Law of Multiple Proportions |
| B. | Law of Definite Proportion |
| C. | Law of Conservation of mass |
| D. | Law of Reciprocal Proportions |
| Answer» C. Law of Conservation of mass | |
| 49. |
Water which is suitable for drinking is called _______________ water._x005F_x000D_ |
| A. | hygienic |
| B. | sparkling |
| C. | potable |
| D. | sanitary |
| Answer» D. sanitary | |
| 50. |
Washing soda is the common name for |
| A. | Sodium Bicarbonate |
| B. | Calcium Carbonate |
| C. | Sodium Carbonate |
| D. | Calcium Bicarbonate |
| Answer» D. Calcium Bicarbonate | |