Chemistry (General Concepts) MCQs with Answers

Which one of the following contains the most acidic proton?

• A.Alcohol
• B.Thiol
• C.Amine
• D.Alkane

The ideal gas law can be rearranged to solve for the number of moles (n) using the equation:

• A.n = PV/RT
• B.n = RT/PV
• C.n = PT/RV
• D.n = RV/PT

Bond which involves 3 shared electron pairs is a ?

• A.Single covalent bond
• B.Double covalent bond
• C.Triple covalent bond
• D.Ionic bond

In diamond, each carbon atom is covalently bonded with four other carbon atoms at an angle of ?

• A.90°
• B.109.5°
• C.120°
• D.180°

The ability to attract shared pair of electron is called ?

• A.Electronegativity
• B.Electron affinity
• C.Ionization energy
• D.Electropositivity

A change that alters the composition of a substance is known as ?

• A.Physical Change
• B.Chemical Change
• C.Nuclear Change
• D.Temporary Change

Born-Haber cycle is a best example of ?

• A.Hess law
• B.Avogadro's law
• C.Graham's law
• D.Boyle's law

Organic chemistry is a branch of chemistry in which we study compounds of?

• A.Oxygen
• B.Carbon
• C.Nitrogen
• D.Hydrogen

What is the energy required to produce an electron-positron pair?

• A.0.51 MeV
• B.2.04 MeV
• C.1.02 MeV
• D.1.50 MeV