Q. What is the IUPAC name of CH3CH2CH2OH?
A.
Propan-1-ol
B.
Butan-1-ol
C.
Pentanol
D.
Butanol
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Solution
The compound CH3CH2CH2OH is named butan-1-ol as it has four carbon atoms and the hydroxyl group is on the first carbon.
Correct Answer: B — Butan-1-ol
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Q. What is the IUPAC name of CH3CH2OCH2CH3?
A.
Ethyl methyl ether
B.
Dimethyl ether
C.
Diethyl ether
D.
Ethyl ether
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Solution
The compound CH3CH2OCH2CH3 is named diethyl ether, as it consists of two ethyl groups bonded to an oxygen atom.
Correct Answer: C — Diethyl ether
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Q. What is the IUPAC name of CH3CHO?
A.
Ethanal
B.
Propanal
C.
Acetaldehyde
D.
Butanal
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Solution
The IUPAC name of CH3CHO is ethanal, which is also known as acetaldehyde.
Correct Answer: A — Ethanal
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Q. What is the IUPAC name of CH3COCH2CH3?
A.
Butan-2-one
B.
Butanal
C.
Propan-2-one
D.
Pentanal
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Solution
The IUPAC name of CH3COCH2CH3 is Butan-2-one, as it has a ketone functional group at the second carbon.
Correct Answer: A — Butan-2-one
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Q. What is the IUPAC name of CH3COCH2CHO?
A.
3-oxobutanal
B.
4-oxobutanal
C.
2-oxobutanal
D.
2-butanone
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Solution
The IUPAC name of CH3COCH2CHO is 3-oxobutanal.
Correct Answer: A — 3-oxobutanal
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Q. What is the IUPAC name of CH3COCH3?
A.
Propanal
B.
Butan-2-one
C.
Acetone
D.
Ethyl methyl ketone
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Solution
CH3COCH3 is known as acetone, which is the simplest ketone.
Correct Answer: C — Acetone
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Q. What is the IUPAC name of CH3COOH?
A.
Methanoic acid
B.
Ethanoic acid
C.
Propanoic acid
D.
Butanoic acid
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Solution
CH3COOH is known as Ethanoic acid in IUPAC nomenclature.
Correct Answer: B — Ethanoic acid
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Q. What is the IUPAC name of CH3NH2?
A.
Methylamine
B.
Ethylamine
C.
Propylamine
D.
Dimethylamine
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Solution
The IUPAC name of CH3NH2 is methylamine.
Correct Answer: A — Methylamine
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Q. What is the IUPAC name of the alkane with the formula C5H12?
A.
Pentane
B.
Butane
C.
Hexane
D.
Propane
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Solution
The alkane with the formula C5H12 is named Pentane.
Correct Answer: A — Pentane
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Q. What is the IUPAC name of the alkane with the formula C6H14?
A.
Hexane
B.
Pentane
C.
Heptane
D.
Octane
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Solution
The alkane with the formula C6H14 is named Hexane.
Correct Answer: A — Hexane
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Q. What is the IUPAC name of the alkene with the formula C5H10?
A.
Pentene
B.
Butene
C.
Hexene
D.
Cyclopentene
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Solution
The IUPAC name of the alkene with the formula C5H10 is pentene.
Correct Answer: A — Pentene
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Q. What is the IUPAC name of the compound CH2=CH-CH2-CH3?
A.
Butene
B.
Propene
C.
1-Butene
D.
2-Butene
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Solution
The compound CH2=CH-CH2-CH3 is named 1-Butene as the double bond is between the first and second carbon.
Correct Answer: C — 1-Butene
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Q. What is the IUPAC name of the compound CH3-CH2-CH2-CH3?
A.
Butane
B.
Propane
C.
Pentane
D.
Hexane
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Solution
The IUPAC name for CH3-CH2-CH2-CH3 is Butane.
Correct Answer: A — Butane
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Q. What is the IUPAC name of the compound CH≡C-CH2-CH3?
A.
1-butyne
B.
2-butyne
C.
1-pentyne
D.
3-pentyne
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Solution
The IUPAC name of CH≡C-CH2-CH3 is 1-butyne.
Correct Answer: A — 1-butyne
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Q. What is the IUPAC name of the compound with the formula C2H5-CO-CH3?
A.
Butan-2-one
B.
Propan-2-one
C.
Butan-1-one
D.
Propan-1-one
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Solution
The compound is a ketone with four carbons, and the carbonyl group is on the second carbon, thus it is Butan-2-one.
Correct Answer: A — Butan-2-one
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Q. What is the IUPAC name of the compound with the formula C4H6?
A.
1-butyne
B.
2-butyne
C.
Cyclobutene
D.
Butadiene
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Solution
The compound C4H6 is named 2-butyne according to IUPAC nomenclature.
Correct Answer: B — 2-butyne
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Q. What is the IUPAC name of the compound with the formula C6H5-CH2-CHO?
A.
Benzaldehyde
B.
Benzylaldehyde
C.
Phenylacetaldehyde
D.
Phenylaldehyde
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Solution
The compound has a benzyl group and an aldehyde functional group, making the correct name Benzylaldehyde.
Correct Answer: B — Benzylaldehyde
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Q. What is the IUPAC name of the compound with the formula C6H5CH3?
A.
Toluene
B.
Benzaldehyde
C.
Phenol
D.
Aniline
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Solution
The compound C6H5CH3 is known as toluene, which is a methyl-substituted derivative of benzene.
Correct Answer: A — Toluene
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Q. What is the IUPAC name of the compound with the structure CH3-CH(CH3)-C(CH3)2-CH2-CH3?
A.
2,3-Dimethylpentane
B.
3,3-Dimethylpentane
C.
2,2-Dimethylpentane
D.
3-Methylpentane
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Solution
The longest chain has 5 carbons, and there are two methyl groups on the third carbon, so the name is 3,3-Dimethylpentane.
Correct Answer: B — 3,3-Dimethylpentane
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Q. What is the Kb of ammonia (NH3) if the pKa of its conjugate acid (NH4+) is 9.25?
A.
1.8 x 10^-5
B.
5.6 x 10^-10
C.
1.0 x 10^-14
D.
3.2 x 10^-5
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Solution
Kb = Kw / Ka = 1.0 x 10^-14 / 5.6 x 10^-10 = 1.8 x 10^-5
Correct Answer: A — 1.8 x 10^-5
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Q. What is the Ksp expression for the salt Ag2SO4?
A.
Ksp = [Ag+]^2[SO4^2-]
B.
Ksp = [Ag2+]^2[SO4^2-]
C.
Ksp = [Ag+]^2[SO4^2-]^2
D.
Ksp = [Ag+]^2[SO4^2-]^3
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Solution
The solubility product constant (Ksp) for Ag2SO4 is given by Ksp = [Ag+]^2[SO4^2-] because the dissociation is Ag2SO4 ⇌ 2Ag+ + SO4^2-.
Correct Answer: A — Ksp = [Ag+]^2[SO4^2-]
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Q. What is the Ksp of AgCl if the solubility of AgCl in water is 1.0 x 10^-5 M?
A.
1.0 x 10^-10
B.
1.0 x 10^-5
C.
1.0 x 10^-15
D.
1.0 x 10^-20
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Solution
Ksp = [Ag+][Cl-] = (1.0 x 10^-5)(1.0 x 10^-5) = 1.0 x 10^-10.
Correct Answer: A — 1.0 x 10^-10
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Q. What is the latent heat of fusion for ice?
A.
334 J/g
B.
2260 J/g
C.
4190 J/g
D.
1000 J/g
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Solution
The latent heat of fusion for ice is approximately 334 J/g.
Correct Answer: A — 334 J/g
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Q. What is the latent heat of fusion?
A.
Heat required to change a solid to a liquid
B.
Heat required to change a liquid to a gas
C.
Heat required to change a gas to a solid
D.
Heat required to change a liquid to a solid
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Solution
Latent heat of fusion is the heat required to change a solid into a liquid at its melting point.
Correct Answer: A — Heat required to change a solid to a liquid
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Q. What is the length of the altitude from vertex A to side BC in triangle ABC with sides 5 cm, 12 cm, and 13 cm?
A.
5 cm
B.
6 cm
C.
12 cm
D.
13 cm
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Solution
The area of the triangle can be calculated as (1/2) * base * height. The area is 30 cm² (since it's a right triangle). Using area = (1/2) * 12 * height, we find height = 5 cm.
Correct Answer: B — 6 cm
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Q. What is the length of the altitude from vertex A to side BC in triangle ABC with sides a = 6, b = 8, and c = 10?
A.
4.8
B.
5.4
C.
6.0
D.
7.2
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Solution
Using the area formula, Area = 1/2 * base * height. First, find the area using Heron's formula, then use it to find the height.
Correct Answer: A — 4.8
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Q. What is the length of the altitude from vertex A to side BC in triangle ABC with sides AB = 6, AC = 8, and BC = 10?
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Solution
Using the area formula, Area = 1/2 * base * height. The area can also be calculated using Heron's formula, which gives 24. Thus, height = (2 * Area) / base = (2 * 24) / 10 = 4.8.
Correct Answer: A — 4.8
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Q. What is the length of the diagonal of a rectangle with vertices at (0, 0), (0, 4), (3, 0), and (3, 4)?
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Solution
Diagonal length = √[(3-0)² + (4-0)²] = √[9 + 16] = √25 = 5.
Correct Answer: C — 5
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Q. What is the length of the diameter of a circle with radius 7?
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Solution
The diameter is twice the radius, so 2 * 7 = 14.
Correct Answer: B — 14
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Q. What is the length of the diameter of a circle with the equation (x - 1)² + (y + 2)² = 16?
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Solution
The radius is √16 = 4, so the diameter is 2 * radius = 8.
Correct Answer: B — 8
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