P-Block Elements
Q. What is the correct IUPAC name for the compound CH3-CH2-CH(CH3)-OH?
A.
2-Propanol
B.
1-Butanol
C.
3-Methyl-1-butanol
D.
2-Methyl-1-propanol
Show solution
Solution
The correct IUPAC name for CH3-CH2-CH(CH3)-OH is 2-Methyl-1-propanol, as the longest chain has three carbons and the hydroxyl group is on the first carbon.
Correct Answer: D — 2-Methyl-1-propanol
Learn More →
Q. What is the IUPAC name of the compound with the formula C4H10O that has a branched structure?
A.
Butanol
B.
2-Butanol
C.
Butoxyethane
D.
1-Butanol
Show solution
Solution
The compound with the formula C4H10O and a branched structure is 2-Butanol, which has the hydroxyl group (-OH) on the second carbon.
Correct Answer: B — 2-Butanol
Learn More →
Q. What is the main product of the dehydration of 2-butanol?
A.
Butene
B.
Butyne
C.
Butanol
D.
Butanal
Show solution
Solution
The dehydration of 2-butanol primarily produces butene through an elimination reaction.
Correct Answer: A — Butene
Learn More →
Q. What is the stereochemical configuration of 2-bromobutane?
A.
R
B.
S
C.
R and S
D.
Neither
Show solution
Solution
2-bromobutane can exist as two enantiomers, R and S, due to the presence of a chiral center at the second carbon.
Correct Answer: C — R and S
Learn More →
Q. Which functional group is present in all alcohols?
A.
Aldehyde
B.
Ketone
C.
Hydroxyl
D.
Carboxylic acid
Show solution
Solution
All alcohols contain a hydroxyl group (-OH) as their functional group.
Correct Answer: C — Hydroxyl
Learn More →
Q. Which of the following compounds is a secondary alcohol?
A.
1-Butanol
B.
2-Butanol
C.
3-Pentanol
D.
Cyclohexanol
Show solution
Solution
2-Butanol is a secondary alcohol because the hydroxyl group is attached to a carbon that is connected to two other carbons.
Correct Answer: B — 2-Butanol
Learn More →
Q. Which of the following compounds is an example of a p-block element?
A.
NaCl
B.
SiO2
C.
Mg(OH)2
D.
Fe2O3
Show solution
Solution
SiO2 contains silicon, which is a p-block element in group 14 of the periodic table.
Correct Answer: B — SiO2
Learn More →
Q. Which of the following is a functional group characteristic of phenols?
A.
Aldehyde
B.
Hydroxyl
C.
Carboxylic acid
D.
Ether
Show solution
Solution
Phenols contain a hydroxyl (-OH) functional group directly attached to an aromatic ring.
Correct Answer: B — Hydroxyl
Learn More →
Q. Which of the following is the correct IUPAC name for CH3-CH2-CH2-CH(OH)-CH3?
A.
2-Pentanol
B.
3-Pentanol
C.
1-Pentanol
D.
2-Methyl-1-butanol
Show solution
Solution
The correct IUPAC name for CH3-CH2-CH2-CH(OH)-CH3 is 3-Pentanol, as the hydroxyl group is on the third carbon of the longest chain.
Correct Answer: B — 3-Pentanol
Learn More →
Q. Which p-block element is known for forming stable covalent bonds?
A.
Sodium
B.
Calcium
C.
Carbon
D.
Iron
Show solution
Solution
Carbon is a p-block element known for forming stable covalent bonds due to its tetravalency.
Correct Answer: C — Carbon
Learn More →
Showing 1 to 10 of 10 (1 Pages)