Carbon and its compounds

Question 1

Question: Which of the following statements is not applicable to cabon compounds?

1.	They have low melting and boiling points.
2.	They are ionic in nature.
3.	They form homologous series.
4.	They are generally soluble in organic solvents.

Answer: 2

Question 2

Question: Which of the following properties is not true regarding organic compounds.

1.	They are generally covalent compounds.
2.	Show isomerism.
3.	Compounds have high melting and boiling points.
4.	Generally insoluble in water.

Answer: 3

Question 3

Question: The property of catenation is more marked in case of _________.

1.	silicon
2.	hydrogen
3.	oxygen
4.	carbon

Answer: 4

Question 4

Question: The open chain aliphatic hydrocarbon with molecular formula C₉H₁₆ is _________.

1.	an alkane
2.	an alkene
3.	an alkyne
4.	acyclic

Answer: 3

Question 5

Question: The double bond between the two carbon atoms in the C₂H₄ molecule indicates

1.	Two pairs of mobile electrons
2.	Two pairs of shared electrons
3.	Two pairs of unpaired electrons
4.	Two pairs of lone electrons

Answer: 2

Question 6

Question: Alkenes and alkynes are _________.

1.	saturated aliphatic hydrocarbons
2.	unsaturated aliphatic hydrocarbons
3.	unsaturated aromatic hydrocarbons
4.	cyclic hydrocarbons

Answer: 2

Question 7

Question: Which of the following compounds have a ring-carbon chain structure?

1.	Ethane
2.	Ethene
3.	Ethyne
4.	Benzene

Answer: 4

Question 8

Question: The structural formula of 2-butene is _________.

1.	CH3 - CH = C = CH2
2.
3.	CH3 = CH - CH2 - CH3
4.	CH3 - CH = CH - CH3

Answer: 4

Question 9

Question: IUPAC name of

is _________.

1.	propanol
2.	butanol
3.	2-butanol
4.	isobutanol

Answer: 3

Question 10

Question: Maximum number of bonds between two atoms of a covalent bond can be

1.	Four
2.	Two
3.	Three
4.	One

Answer: 3

Question 11

Question: The correct formula of ethanol is ________.

1.	C2H6OH
2.	C2H5OH
3.	CH3OH
4.	CH3CH2CH2OH

Answer: 2

Question 12

Question: The functional group of ketones is _______________.

1.	COOH
2.	CH=O
3.	>C=O
4.	O

Answer: 3

Question 13

Question: The IUPAC name of simplest alcohol is _____.

1.	methanol
2.	ethanol
3.	ethyl alcohol
4.	methyl alcohol

Answer: 1

Question 14

Question: In ethane (C₂H₆) each carbon atom is bonded to

1.	Six atoms
2.	Three atoms
3.	Two atoms
4.	Four atoms

Answer: 2

Question 15

Question: Which of the following does not contain carbonyl group?

1.	Ethanal
2.	Ethanol
3.	Methanal
4.	Propanone

Answer: 2

Question 16

Question: The term 'Isomerism' applies to organic compounds with same

1.	molecular formula but different structural formulae.
2.	molecular formula but different empirical formulae.
3.	empirical formula but different molecular formulae.
4.	structural formulae but different molecular formula.

Answer: 2

Question 17

Question: A hydrocarbon compound burns with a non-luminous flame. Which hydrocarbon type does it indicate?

1.	Alicyclic hydrocarbon
2.	Aromatic hydrocarbon
3.	Unsaturated hydrocarbon
4.	Acyclic hydrocarbon.

Answer: 2

Question 18

Question: The chlorination of methane, is an example of _________.

1.	addition reaction
2.	reduction reaction
3.	elimination reaction
4.	substitution chain reaction

Answer: 4

Question 19

Question: Organic compounds are generally soluble in

1.	Polar solvents
2.	Protic solvents
3.	Immiscible solvents
4.	Non-polar solvents

Answer: 4

Question 20

Question: On heating ethyl alcohol with alumina at 350^oC we get _________.

1.	ethene
2.	diethyl ether
3.	acetaldehyde
4.	ethane

Answer: 1

Question 21

Question: The polar end of the sodium stearate soap molecule C₁₇H₃₅COONa contains______.

1.	CH3(CH2)16- chain
2.	Na
3.	C17
4.	-COO-Na+ group

Answer: 4

Question 22

Question: The non-polar hydrocarbon group of a soap molecule _________.

1.	repels water but attracts oil and dirt particles
2.	does not attract oil or dirt
3.	faces outward towards the water
4.	has a -COO-Na+ group

Answer: 1

Question 23

Question: Micelles are_________.

1.	soap molecules in clean water
2.	drops of oil or dirt that surrounds the molecule
3.	a tadpole shaped fatty acid
4.	cluster of soap molecules surrounding the dirt particle

Answer: 4

Question 24

Question: 1-propanol and 2-propanol are

1.	chain isomers
2.	position isomers
3.	functional isomers
4.	homologues

Answer: 2

Question 25

Question: Diamond is not conducting electricity because

1.	Its structure is very compact.
2.	There are only carbon atoms present.
3.	There are no free electrons.
4.	It is crystalline in nature.

Answer: 3