Objective Type exam questions in Organic chemistry

Chemistry Objective question answer - Aldehydes and Ketones

Find the correct answer by clicking on the choice given. 1. Which of the following reaction sequences would be the best synthesis of 2-pentanone.
2. Which of the functional groups on the following molecule are susceptible to nucleophilic attack?
	(a)	"a" and "b"
	(b)	"a" and "c"
	(c)	"b" and "c"
	(d)	"a", "b" and "c"
3. Which of the following reaction sequences would be the best synthesis of t-butyl alcohol?
4. Which of these reagents could accomplish the following reduction?
	(a)	NaBH4
	(b)	LiAlH4
	(c)	1 mole H2, poisoned catalyst, low pressure
	(d)	H3O+
5. What is the major product of the following reaction?

Chemistry Objective question answer - Ethers, Amines and Nitriles

Find the correct answer by clicking on the choice given. 1. The reason that CH3NH2 is a stronger base than CH3OH is due to the fact that...
	(a)	hyperconjugation resonance of the product, CH3NH3+, is better than for CH3OH2+.
	(b)	resonance of the product, CH3NH3+, is better than for CH3OH2+.
	(c)	the electronegativity of nitrogen is less than oxygen, thus making the electron pair more available.
	(d)	It isn't. The oxygen atom has 2 non-bonded pairs of electrons making it twice as basic.
2. Which of the following compounds is represented by this infrared spectrum?
3. What is the major product of the following reaction?
4. Which of the following compounds is the strongest Brønsted acid?
5. Which of the following compounds is the strongest Brønsted base?
6. What is the major product of the following reaction?
7. What is the major product of the following reaction?
8. What reagent is needed to accomplish the following synthesis?
9. What is the major product of the following reaction?

Chemistry Exam study materials - Alcohols and Phenols

Find the correct answer by clicking on the choice given. 1. What is the major product of the following reaction?
2. What is the major product of the following reaction?
3. Which of the following reagents could be used to distinguish between the following compounds by a visible reaction...one that produces either gas bubbles or a color change?
	(a)	KMnO4, H+, cold
	(b)	NaOH
	(c)	CH3MgBr
	(d)	LiAlH4
4. The major reason that phenol is a better Brønsted acid than cyclohexanol is...
	(a)	it is a better proton donor.
	(b)	the cyclohexyl group is an electron donating group by induction, which destabilizes the anion formed in the reaction.
	(c)	phenol is able to stabilize the anion formed in the reaction by resonance.
	(d)	the phenyl group is an electron withdrawing group by induction, which stabilizes the anion formed in the reaction.
5. What is the best reagent to convert isopropyl alcohol to isopropyl bromide?
	(a)	HBr
	(b)	SOBr2
	(c)	Br2
	(d)	CH3MgBr
6. What is the major product of the following reaction?
7. What is the major product of the following reaction?

Chemistry Entrance question with answer - Acid-Base Reactions

Find the correct answer by clicking on the choice given. 1. Which of the following compounds is the strongest Brønsted base?
	(a)	CH4
	(b)	NH3
	(c)	H2O
	(d)	HF
2. What is the major product obtained from the following reaction?
3. Which of the following compounds is the strongest Brønsted base?
	(a)	H2PO4-
	(b)	HSO4-
	(c)	NO3-
	(d)	CH3COO-
4. What is the major product obtained from the following reaction sequence?

Multiple Choice Questions on Infrared Spectroscopy

Find the correct answer by clicking on the choice given. 1. What is the structure of the compound that gives the following infrared spectrum?
2. What is the structure of the compound that gives the following infrared spectrum?
3. What is the structure of the compound that gives the following infrared spectrum?
4. What is the structure of the compound that gives the following infrared and PMR spectra?
5. Which of the following bonds would show the strongest absorption in the IR?
	(a)	carbon-hydrogen
	(b)	oxygen-hydrogen
	(c)	nitrogen-hydrogen
	(d)	sulfur-hydrogen
6. Why is the oxygen-hydrogen absorption of CH3OH such a broad band in the infrared?
	(a)	Rotational energy levels broaden the absorption.
	(b)	Hyperconjugation resonance broadens the absorption.
	(c)	Resonance broadens the absorption.
	(d)	Hydrogen bonding broadens the absorption.

Multiple Choice Questions on Aromatic Hydrocarbons

Find the correct answer by clicking on the choice given. 1. Which of the following is an intermediate in the reaction of benzene with CH3Cl and AlCl3?
2. Which of the following is an intermediate in the reaction of benzene with Br2 and AlBr3?
3. Which of the following reagents would be the best reactants for the following synthesis?
4. Which of the following compounds is aromatic?
5. Which of the following represents the best resonance form for H2C=CHF?
6. Which of the following structures represents the best resonance form for the following compound?

Multiple Choice Questions on Alkynes

Choose the best answer by Clicking over it

1. What is the IUPAC name for the following compound?
	(a)	4-vinyl-2-pentyne
	(b)	4-methylhex-2-yn-5-ene
	(c)	3-methylhex-4-yn-1-ene
	(d)	3-methylhex-1-en-4-yne
2. What is the major product expected from the following reaction?
3. What is the major product expected from the following reaction?
4. What is the major product expected from the following reaction?
5. What is the major product expected from the following reaction?