Industrial chemistry Industrial chemistry MCQS#Macromolecules#Polymers1921Choose the best answerThe repeating units that join together to form a polymer are called:ACatalystsBMonomersCRadicalsDCross-links Like 0 Discuss 0Share
Stoichiometry 11#Elements and Molecules1922Choose the best answerWhich pair contains molecules of elements rather than compounds?AO₂ and N₂BH₂O and CO₂CNH₃ and CH₄DHCl and H₂O Like 0 Discuss 0Share
UHS MDCAT 2025 Chemistryuhs mdcat chemistry 2025#Atomic Structure#Planck's Constant1923Choose the best answerThe value of Planck's constant is:A6.626 × 10⁻³⁰ J·secB6.626 × 10⁻³² J·secC6.626 × 10⁻³⁴ J·secD6.626 × 10⁻³⁶ J·sec Like 0 Discuss 0Share
Chemical BondingSigma and Pi Bonds1924Choose the best answerWhich statement about σ and π bonds is incorrect?AA σ bond forms before a π bond between two atomsBA π bond is generally weaker than a σ bondCElectron density in a π bond is lower above and below the internuclear axisDA σ bond has cylindrical symmetry about the internuclear axis Like 0 Discuss 0Share
Alkyl HalidesE2 Elimination1925Choose the best answer2-Bromobutane reacts with alcoholic KOH mainly through:ASN₁BSN₂CE1DE2 Like 0 Discuss 0Share