MCQOPTIONS
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MCQOPTIONS
This section includes 217 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the general formula of alkenes? |
| A. | CnH2n |
| B. | CnH2n-2 |
| C. | CnH2n+2 |
| D. | CnH2n+OH |
| Answer» B. CnH2n-2 | |
| 2. |
Why alkanes are known as saturated hydrocarbon? |
| A. | It consists of triple bond. |
| B. | It consists of double bond. |
| C. | It consists of single bond. |
| D. | None of the above |
| Answer» D. None of the above | |
| 3. |
Name a hydrocarbon which is a main component of natural gas? |
| A. | Methyl |
| B. | Methane |
| C. | Ethyl |
| D. | Methanol |
| Answer» C. Ethyl | |
| 4. |
Name an open chain hydrocarbon which is odourless? |
| A. | Aldehydes |
| B. | Aromatic |
| C. | Aliphatic |
| D. | Acetate |
| Answer» D. Acetate | |
| 5. |
Name an organic compound in which RCOOCOR is a functional group? |
| A. | Ester |
| B. | Acid anhydride |
| C. | Dimethyl ether |
| D. | Aliphatic hydrocarbon |
| Answer» C. Dimethyl ether | |
| 6. |
Aromatic hydrocarbons are also known as ........... ? |
| A. | Acetaldehyde |
| B. | Butyne |
| C. | Arenes |
| D. | Arines |
| Answer» D. Arines | |
| 7. |
In which hydrocarbon all the four valencies of carbon are linked together with single bond? |
| A. | Alkanes |
| B. | Alkenes |
| C. | Alkynes |
| D. | None of the above |
| Answer» B. Alkenes | |
| 8. |
In water alkanes are .......... ? |
| A. | Soluble |
| B. | Insoluble |
| C. | Bitter in taste |
| D. | Sweet in taste |
| Answer» C. Bitter in taste | |
| 9. |
Which compound is used for making perfumes and dyes? |
| A. | |
| B. | |
| C. | |
| D. | |
| Answer» C. | |
| 10. |
What is the old name of alkenes? |
| A. | Olefins |
| B. | Paraffin |
| C. | Acetylene |
| D. | None of the above |
| Answer» B. Paraffin | |
| 11. |
The outermost electrons in an atom are called: |
| A. | Valence electrons |
| B. | Valency |
| C. | Neutrons |
| D. | Protons |
| Answer» B. Valency | |
| 12. |
When the concentration of acid is determined by neutralising it, is called: |
| A. | Transition state |
| B. | Theoretical yield |
| C. | Titration |
| D. | Thermodynamics |
| Answer» B. Theoretical yield | |
| 13. |
The number of moles of solute per kilogram of solvent in a solution is called: |
| A. | Molar mass |
| B. | Molar Volume |
| C. | Molality |
| D. | Molarity |
| Answer» D. Molarity | |
| 14. |
A substance that slows down chemical reaction is called: |
| A. | Inhibitor |
| B. | Ketone |
| C. | Kelvin |
| D. | Nuclear reaction |
| Answer» B. Ketone | |
| 15. |
When two substances don’t dissolve they are called: |
| A. | Solute |
| B. | Solvent |
| C. | . Immiscible |
| D. | Solution |
| Answer» D. Solution | |
| 16. |
The elements in group 17 of a periodic table are called: |
| A. | Halogens |
| B. | Zerovalent |
| C. | Transition elements |
| D. | Actinide series |
| Answer» B. Zerovalent | |
| 17. |
The measurement of how much molecules on a liquid tend to stick to each other is called: |
| A. | Suspension |
| B. | Synthesis |
| C. | Surface Tension |
| D. | Transition State |
| Answer» D. Transition State | |
| 18. |
When a solid can change directly into gas, it is called: |
| A. | Boiling |
| B. | Condensation |
| C. | Sublimation |
| D. | Evaporation |
| Answer» D. Evaporation | |
| 19. |
The solid that gets dissolved in a solution is called: |
| A. | Solvent |
| B. | Sol |
| C. | Solute |
| D. | None of the above |
| Answer» D. None of the above | |
| 20. |
A reaction that has both oxidation and reduction, is called: |
| A. | Redox reaction |
| B. | Decomposition reaction |
| C. | Synthesis reaction |
| D. | Double displacement reaction |
| Answer» B. Decomposition reaction | |
| 21. |
What is the substance that has an unstable nucleus that can fall apart called? |
| A. | Organic compound |
| B. | Radioactive |
| C. | Nuclear fission |
| D. | Nuclear fusion |
| Answer» C. Nuclear fission | |
| 22. |
When a substance loses electrons, it is called: |
| A. | Corrosion |
| B. | Rust |
| C. | Oxidation |
| D. | Osmosis |
| Answer» D. Osmosis | |
| 23. |
When a gas moves through an opening into a chamber that contains no pressure, it is called: |
| A. | Effusion |
| B. | Diffusion |
| C. | Combustion |
| D. | Osmosis |
| Answer» B. Diffusion | |
| 24. |
What is the process called when a compound combines with oxygen gas to form water, heat and carbon dioxide? |
| A. | Electrolysis |
| B. | Combustion |
| C. | Diffusion |
| D. | Calorimetry |
| Answer» C. Diffusion | |
| 25. |
The study of heat flow is called: |
| A. | Combustion |
| B. | Calorimetry |
| C. | Diffusion |
| D. | Electrolysis |
| Answer» C. Diffusion | |
| 26. |
What are the different physical forms in which an element can exist called? |
| A. | Alkane |
| B. | Alloy |
| C. | Amine |
| D. | Allotropes |
| Answer» E. | |
| 27. |
What is the mixing of air into a liquid or solid called? |
| A. | Aeration |
| B. | Aldehyde |
| C. | Actinides |
| D. | Allotropy |
| Answer» B. Aldehyde | |
| 28. |
Compounds that contain carbon are called: |
| A. | Organic compound |
| B. | Ionic compound |
| C. | Alkynes |
| D. | Molecular compound |
| Answer» B. Ionic compound | |
| 29. |
What is the part of the solution that dissolves the solute called? |
| A. | Solvent |
| B. | Sol |
| C. | Salt |
| D. | None of the above |
| Answer» B. Sol | |
| 30. |
The organic compounds having the same molecular formula but different structures are called: |
| A. | Atoms |
| B. | Isomers |
| C. | Homologous series |
| D. | Haloalkanes |
| Answer» C. Homologous series | |
| 31. |
The chemical bond formed by the sharing of electrons between two atoms is known as: |
| A. | Ionic bond |
| B. | Triple covalent bond |
| C. | Covalent bond |
| D. | Single covalent bond |
| Answer» D. Single covalent bond | |
| 32. |
Those chemical substances which have a bitter taste are: |
| A. | Acid |
| B. | Bases |
| C. | Salt |
| D. | Concentrated Acids |
| Answer» C. Salt | |
| 33. |
An unsaturated hydrocarbon in which two carbon atoms are connected by a triple bond is called: |
| A. | Alkynes |
| B. | Haloalkanes |
| C. | Alkenes |
| D. | Ketones |
| Answer» B. Haloalkanes | |
| 34. |
What is an unsaturated hydrocarbon in which the two carbon atoms are connected by a double bond called? |
| A. | Alkanes |
| B. | Alkenes |
| C. | Alkynes |
| D. | Ionic bond |
| Answer» C. Alkynes | |
| 35. |
What is a homogeneous mixture of two or more metals called? |
| A. | Salt |
| B. | Alloy |
| C. | Alkali |
| D. | Acid |
| Answer» C. Alkali | |
| 36. |
The chemical bond formed by the sharing of electrons between two atoms is known as |
| A. | Ionic bond |
| B. | Triple covalent bond |
| C. | Covalent bond |
| D. | Single covalent bond |
| Answer» D. Single covalent bond | |
| 37. |
What is the chemical bond formed by the transfer of electrons from one atom to another is called? |
| A. | Single covalent bond |
| B. | Ionic bond |
| C. | Double covalent bond |
| D. | Triple covalent bond |
| Answer» E. | |
| 38. |
A compound formed from an acid by the replacement of the hydrogen in the acid by a metal is called: |
| A. | Base |
| B. | Salt |
| C. | Concentrated Acid |
| D. | Alkali |
| Answer» C. Concentrated Acid | |
| 39. |
The scale on which the strength of acid solutions as well as basic solutions could be represented by making use of hydrogen ion concentrations in them is called: |
| A. | Balance scale |
| B. | Platform scale |
| C. | Pan scale |
| D. | pH scale |
| Answer» E. | |
| 40. |
Those chemical substances which have a sour taste are: |
| A. | Salt |
| B. | Acid |
| C. | Bases |
| D. | None of the above |
| Answer» C. Bases | |
| 41. |
Those reactions in which two or more substances combine to form a single substance is called: |
| A. | Combination reaction |
| B. | Displacement reaction |
| C. | Decomposition reaction |
| D. | Double displacement reaction |
| Answer» B. Displacement reaction | |
| 42. |
A positively charged particle found in the atoms of all elements is called: |
| A. | Ion |
| B. | Electron |
| C. | Proton |
| D. | Neutron |
| Answer» D. Neutron | |
| 43. |
Atoms of the same element having the same atomic number but different mass number are called: |
| A. | Radioactive isotopes |
| B. | Isobars |
| C. | Valence Electrons |
| D. | Isotopes |
| Answer» E. | |
| 44. |
A small positively charged part at the centre of an atom is called: |
| A. | Nucleus |
| B. | Neutron |
| C. | Electron |
| D. | Proton |
| Answer» B. Neutron | |
| 45. |
A neutral particle found in the nucleus of an atom is called: |
| A. | Electron |
| B. | Nucleus |
| C. | Proton |
| D. | Neutron |
| Answer» E. | |
| 46. |
A positively charged particle found in the atoms of all elements is called |
| A. | Ion |
| B. | Electron |
| C. | Proton |
| D. | Neutron |
| Answer» D. Neutron | |
| 47. |
A negatively charged particle found in the atoms of all elements is called: |
| A. | Proton |
| B. | Electron |
| C. | Neutron |
| D. | Ion |
| Answer» C. Neutron | |
| 48. |
A positively and negatively charged atom or group of atoms is called: |
| A. | Nucleus |
| B. | Ion |
| C. | Compound |
| D. | Molecule |
| Answer» C. Compound | |
| 49. |
An electrically neutral group of two or more atoms chemically bonded together is called: |
| A. | Molecule |
| B. | Ion |
| C. | Element |
| D. | Compound |
| Answer» B. Ion | |
| 50. |
The smallest particle of an element that can take part in a chemical reaction is called: |
| A. | Nucleus |
| B. | Metal |
| C. | Atom |
| D. | Molecule |
| Answer» D. Molecule | |