All Free Chemistry MCQs with Answers

• A. Slowly
• B. Do not ionize
• C. Ionize rapidly
• D. None of these

Explanation: An electrolyte is a medium containing ions that is electrically conducting through the movement of ions so the strong electrolytes are…

• A. Anion
• B. Cation
• C. The ligand is positively charged
• D. Acid

Explanation: Ligands are ions or neutral molecules that bond to a central metal atom or ion.

• A. Br-
• B. CH4
• C. NH3
• D. H2O

Explanation: An electrophile is a species that lack electrons or has a positive charge on it. Br- is a nucleophile, along with H2O and NH3.

• A. 2
• B. 3
• C. 4
• D. 5

Explanation: The explanation for this question will be added soon.

• A. Ethane
• B. Ethanoic Acid
• C. Ethanol
• D. Ethyl Ethanoate

Explanation: The explanation for this question will be added soon.

• A. Aldehydes and ketone
• B. Alcohols and ketone
• C. Carboxylic acid and alcohols
• D. Carboxylic acid and aldehydes

Explanation: Esterification is the process of combining an organic acid (RCOOH) with an alcohol (ROH) to form an ester (RCOOR) and water; or a chemical…

• A. Anhydride > Acylchloride > ester
• B. Ester > Anhydride > Acylchloride
• C. Amide > Acylchloride > ester
• D. Acylchloride > Anhydride > ester

Explanation: Acyl chlorides are the most reactive carboxylic acid derivatives. The electronegative chlorine atom pulls electrons toward it in the C-Cl…

• A. i only
• B. iii only
• C. i and ii only
• D. i and iii only
• E. ii and iii only

Explanation: The explanation for this question will be added soon.

• A. Pressure
• B. Temperature
• C. Volume
• D. Number of moles

Explanation: Correct option is B. Charles's law states that: "the volume of a given mass of gas is directly proportional to its absolute temperature…

• A. Monodentate
• B. Bidentate
• C. Polydentate
• D. Tridentate
• E. None of the above

Explanation: The explanation for this question will be added soon.

• A. Rancidification value
• B. Saponification value
• C. Acid Value
• D. Iodine Value

Explanation: The explanation for this question will be added soon.

• A. Alicyclic and Aromatic
• B. Open chain and branched chain
• C. Aromatic and non-aromatic
• D. Antiaromatic and antialicyclic

Explanation: They are divided into alicylic and aromatic.

• A. CH2 = CH2
• B. CH3 - O - CH3
• C. CH3 - NH2
• D. C6H6

Explanation: Aromatic compounds are also called arenes and the only correct option showing a benzene ring / aromatic compound is option D.

• A. Animals
• B. Plants
• C. Bacteria
• D. All of these

Explanation: Option A: According to the vital force theory, animals were considered to possess a vital force or vital principle that enabled them to…

• A. Arrangement of atoms in the compound
• B. Arrangement of electrons in the compound
• C. Arrangement of orbitals that are involved in bonding
• D. Lewis structure of compounds

Explanation: Option A: Arrangement of atoms in the compound: This option refers to the structural formula's main purpose, which is to depict the…

• A. Candle wax
• B. Kerosine oil
• C. Paraffin oil
• D. Vegetable ghee

Explanation: Candle wax is typically made from natural waxes, such as beeswax or plant-based waxes like soy wax or palm wax, or synthetic waxes like…

• A. Inorganic
• B. Polar
• C. Ionic
• D. Non-polar

Explanation: The electronegativity of carbon is 2.55 and of hydrogen is 2.2, the difference between them is 0.33.

• A. Hydrogen
• B. Oxygen
• C. Carbon
• D. Both Hydrogen and Carbon

Explanation: Hydrocarbons, as the name suggests, consist of "carbon" and "hydrogen" both.

• A. Ionic
• B. Non-ionic
• C. Non-covalent.
• D. Covalent

Explanation: Organic compounds are covalent in nature. This means that the atoms in organic compounds are held together by covalent bonds, which are…

• A. Volatile
• B. Non-volatile
• C. Fissible
• D. None of these options are correct

Explanation: Volatile organic compounds (VOCs) are organic chemicals (containing Carbon) that have a high vapor pressure at room temperature.