question What is the term for the specific sequence of three nucleotides in mRNA that codes for a particular amino acid during protein synthesis

The Lewis structure for a nitrogen trifluoride (NF3) molecule shows:

A. One single bond and two double bonds
B. One single bond and two triple bonds
C. Three single bonds
D. One double bond and two single bonds

The shape of a molecule with a linear electron domain geometry is:

A. Linear
B. Trigonal planar
C. Tetrahedral
D. Bent

The reaction between an alkane and a halogen in the presence of sunlight is known as:

A. Halogenation
B. Hydrogenation
C. Hydration
D. Dehydration

The process of converting a solid directly into vapor without passing through the liquid phase is called:

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

What is the name of the principle that states that electrons fill the lowest energy orbitals first?

A. Aufbau principle
B. Pauli exclusion principle
C. Hund's rule
D. Heisenberg uncertainty principle

What is the function of a detector in chromatography?

A. Records the separation pattern of components
B. Provides color to the eluent
C. Measures the absorption of light
D. Initiates the chromatographic process

Which type of isomerism occurs in compounds with the same molecular formula but different spatial arrangements around double bonds?

A. Geometric isomerism
B. Structural isomerism
C. Stereoisomerism
D. Optical isomerism

The term "enthalpy of reaction" (ΔHrxn) is also known as:

A. Heat of formation
B. Heat of combustion
C. Heat of solution
D. Heat of fusion

Which of the following is a weak base?

A. NH₃ (Ammonia)
B. KOH (Potassium hydroxide)
C. NaOH (Sodium hydroxide)
D. Ca(OH)₂ (Calcium hydroxide)

The P-T diagram for a phase transition is represented by a line with a negative slope for:

A. Sublimation
B. Condensation
C. Vaporization
D. Melting

Chemistry MCQS - QUESTION DETAILS

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