question Which quantum number describes the shape of an orbital

Chemistry

Which quantum number describes the shape of an orbital?

A. Azimuthal
B. Principal
C. Magnetic
D. Spin

The azimuthal quantum number determines the orbital shape.

What is the term for the weighted average mass of an element's isotopes?

A. Atomic mass
B. Atomic number
C. Molar mass
D. Isotopic mass

What is the primary function of lipoproteins in the body?

A. Transporting fats in the bloodstream
B. Storing excess glucose
C. Facilitating muscle contraction
D. Serving as antioxidants

The reaction 2NaOH + H₂SO₄ → Na₂SO₄ + 2H₂O is an example of a:

A. Neutralization
B. Combustion
C. Synthesis
D. Decomposition

A reaction in which a compound gains electrons is known as:

A. Reduction
B. Oxidation
C. Hydrolysis
D. Esterification

Which of the following indicators is commonly used to test for the presence of acids and bases?

A. Litmus paper
B. Thermometer
C. Barometer
D. pH meter

In DNA, guanine (G) pairs with which nucleotide?

A. Cytosine (C)
B. Adenine (A)
C. Thymine (T)
D. Uracil (U)

What is the name of the reaction between an acid and a carbonate, producing carbon dioxide gas?

A. Acid-base reaction
B. Neutralization reaction
C. Precipitation reaction
D. Effervescence reaction

The citric acid cycle (Krebs cycle) takes place in which cellular organelle?

A. Mitochondria
B. Nucleus
C. Endoplasmic reticulum
D. Golgi apparatus

What is the IUPAC name for CH₃CH₂CH₂COOCH₃?

A. Ethyl acetate
B. Methyl acetate
C. Butyl acetate
D. Propyl acetate

What is the IUPAC name for CH₃CH₂CH₂NHCH₃?

A. Methyl ethylamine
B. Ethyl methylamine
C. Dimethylamine
D. Diethylamine