question Which of the following is a characteristic of a base

Chemistry

Which of the following is a characteristic of a base?

A. Bitter taste
B. Turns blue litmus paper red
C. Releases H⁺ ions
D. Low pH

Bases often have a bitter taste.

Which of the following is a secondary amine?

A. CH₃NH₂
B. (CH₃)₂NH
C. NH₃
D. C₆H₅NH₂

Which molecule has a linear shape due to the absence of lone pairs on the central atom?

A. CO2
B. H2O
C. NH3
D. SO2

In the periodic table, the lanthanides are located in which period?

A. Period 6
B. Period 4
C. Period 5
D. Period 7

What is the function of ribonuclease in cellular processes?

A. Breaks down RNA into nucleotides
B. Synthesizes RNA from DNA template
C. Joins two RNA molecules together
D. Facilitates translation of mRNA

What type of reaction involves the combination of two compounds to form a new compound and a byproduct?

A. Synthesis
B. Decomposition
C. Single displacement
D. Double displacement

What is the IUPAC name for CH₃COCH₃?

A. Acetone
B. Propanone
C. Butanone
D. Ethanal

The balanced chemical equation for the reaction between hydrogen peroxide (H₂O₂) and manganese dioxide (MnO₂) is:

A. H₂O₂ + MnO₂ → Mn(OH)₂ + O₂
B. 2H₂O₂ + MnO₂ → Mn(OH)₂ + O₂
C. H₂O₂ + MnO₂ → MnO + H₂O + O₂
D. 2H₂O₂ + MnO₂ → MnO + H₂O + O₂

The process of a gas changing directly from a gas to a liquid is known as:

A. Condensation
B. Evaporation
C. Sublimation
D. Deposition

The reaction of an alkene with hydrogen halide in the presence of peroxide is known as:

A. Hydrogenation
B. Halogenation
C. Hydration
D. Markovnikov addition

The chemical equation 2H₂O → 2H₂ + O₂ represents a:

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