Which compound is not an isomer of the other three? (a) n-Pentane (b) 2,2-Dimethylpropane (c) 2-Methylbutane

Which compound is not an isomer of the other three?
(a) n-Pentane
(b) 2,2-Dimethylpropane
(c) 2-Methylbutane
by

1 Answer

Answer :

2,3-Dimethylbutane
by

Related questions

Out of pentane, 2-methylbutane and 2,2-dimethylpropane which has the highest boiling point and why?

Description : Out of pentane, 2-methylbutane and 2,2-dimethylpropane which has the highest boiling point and why?

Last Answer : Ans. Pentane having a continuous chain of five carbon atoms has the highest boiling point (309.1K) whereas 2,2 - dimethylpropane boils at 282.5K. With increase in number ... and therefore weak intermolecular forces between spherical molecules, which are overcome at relatively lower temperatures

Which of the following statements about propene, CH3CH=CH2, is correct? (a) All nine atoms lie in the same plane. (b) The compound has a cis and trans isomer. (c) There is a total of eight sigma bonds. (d) All the carbon atoms are sp2 hybridized

Description : Which of the following statements about propene, CH3CH=CH2, is correct? (a) All nine atoms lie in the same plane. (b) The compound has a cis and trans isomer. (c) There is a total of eight sigma bonds. (d) All the carbon atoms are sp2 hybridized

Last Answer : There is a total of eight sigma bonds.

The hydrolysis of 2-bromo-3-methylbutane by `S_(N^(1))` mechanism gives meinly:

Description : The hydrolysis of 2-bromo-3-methylbutane by `S_(N^(1))` mechanism gives meinly:

Last Answer : The hydrolysis of 2-bromo-3-methylbutane by `S_(N^(1))` mechanism gives meinly: A. 3-methyl-2- ... . 2,2-dimethyl-2-propanol D. 2-methyl-1-butanol

Arrange the three isomers of pentane in increasing order of their boiling points?

Description : Arrange the three isomers of pentane in increasing order of their boiling points?

Last Answer : Ans.2, 2-Dimethylpropane

Which of the alkyl chlorides listed below undergoes dehydrohalogenation inthe presence of a strong base to give 2-pentene as the only alkene product?(a) 1-chloropentane(b) 2-chloropentane(c) 3-chloropentane(d) 1-chloro-2-methylbutane

Description : Which of the alkyl chlorides listed below undergoes dehydrohalogenation in the presence of a strong base to give 2-pentene as the only alkene product? (a) 1-chloropentane (b) 2-chloropentane (c) 3-chloropentane (d) 1-chloro-2-methylbutane

Last Answer : 3-chloropentane

Which of the alkyl chlorides listed below undergoes dehydrohalogenation in the presence of a strong base to give 2-pentene as the only alkene product? (a) 1-chloropentane (b) 2-chloropentane (c) 3-chloropentane (d) 1-chloro-2-methylbutane

Description : Which of the alkyl chlorides listed below undergoes dehydrohalogenation in the presence of a strong base to give 2-pentene as the only alkene product? (a) 1-chloropentane (b) 2-chloropentane (c) 3-chloropentane (d) 1-chloro-2-methylbutane

Last Answer : 3-chloropentane

Catalytic hydrogenation of 3-methyl-1-butene gives : (a) Isobutane (b) 2,2-Dimethylbutane (c) 2-Methylbutane (d) 2,3-Dimethylbutane

Description : Catalytic hydrogenation of 3-methyl-1-butene gives : (a) Isobutane (b) 2,2-Dimethylbutane (c) 2-Methylbutane (d) 2,3-Dimethylbutane

Last Answer : 2-Methylbutane

Which hydrocarbons are the major constituents of 'LPG'? (1) Methane and Ethane (2) Propane and Butane (3) Pentane and Benzene (4) Only Methane

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Last Answer : (2) Propane and Butane Explanation: Cooking gas, also known as Liquefied Petroleum Gas (LPG) is primarily propane (C3Hg) and butane (C4H10).

(a) What effect the branching of an alkane has on its melting point? (L-III) (b) Which of the following has highest boiling point?(L-III) (1) 2-methyl pentane. (2) 2, 3-diethyl butane. (3) 2, 2- dimethyl butane.

Description : (a) What effect the branching of an alkane has on its melting point? (L-III) (b) Which of the following has highest boiling point?(L-III) (1) 2-methyl pentane. (2) 2, 3-diethyl butane. (3) 2, 2- dimethyl butane.

Last Answer : Ans.(a) In general conception, as the branching increases packing of the molecules in the crystals becomes less close and have melting point decreases accordingly. (b) As the branching increases, ... attraction decreases and hence the boiling point decreases. So, 2-methyl pentane has highest B.pt.

The combustion of Pentane produces : (a) Pentene (b) HCl + H2O (c) Pentyne (d) CO2 + H2O

Description : The combustion of Pentane produces : (a) Pentene (b) HCl + H2O (c) Pentyne (d) CO2 + H2O

Last Answer : CO2 + H2O

How many isomers are possible for pentane? (a) 2 (b) 3 (c) 4 (d) 5

Description : How many isomers are possible for pentane? (a) 2 (b) 3 (c) 4 (d) 5

Last Answer : 2

The R/S designation for the following stereoisomers of 1,3-Dibromo-2-methylbutane is :

Description : The R/S designation for the following stereoisomers of 1,3-Dibromo-2-methylbutane is :

Last Answer : The R/S designation for the following stereoisomers of 1,3-Dibromo-2-methylbutane is : A. 2R, 3R B. 2R, 3S C. 2S, 3R D. 2S, 3S

The R/S designation for the following stereoisomers of 1,3-Dibromo-2-methylbutane is :

Description : The R/S designation for the following stereoisomers of 1,3-Dibromo-2-methylbutane is :

Last Answer : The R/S designation for the following stereoisomers of 1,3-Dibromo-2-methylbutane is : A. 2R, 3R B. 2R, 3S C. 2S, 3R D. 2S, 3S

For the complex [Fe(en)2Cl2], Cl, (en = ethylene diamine), identify (i) the oxidation number of iron, (ii) the hybrid orbitals and the shape of the complex, (iii) the magnetic behaviour of the complex, (iv) the number of geometrical isomers, (v) whether there is an optical isomer also, and (vi) name of the complex. (At. no. of Fe = 26) \ -Chemistry

Description : For the complex [Fe(en)2Cl2], Cl, (en = ethylene diamine), identify (i) the oxidation number of iron, (ii) the hybrid orbitals and the shape of the complex, (iii) the magnetic behaviour of the complex, (iv) ... an optical isomer also, and (vi) name of the complex. (At. no. of Fe = 26) \ -Chemistry

Last Answer : i) [Fe(en)2Cl2] Cl or x + 0 + 2 (-1) + (-1) = 0 x + (- 3) = 0 or x = + 3 ∴ Oxidation number of iron, x = + 3 (ii) The complex has two bidentate ligands and two ... )2Cl2] Cl, only cis-isomer shows optical isomerism. (vi) Name of complex: Dichloridobis (ethane-1, 2- diamine) Iron (III) chloride

Give IUPAC name of the ionization isomer of [Ni(NH3)3NO3]Cl. -Chemistry

Description : Give IUPAC name of the ionization isomer of [Ni(NH3)3NO3]Cl. -Chemistry

Last Answer : IUPAC name : Triammine chlorido nickel (II) nitrate [Ni(NH3)3NO3]Cl

Give IUPAC name of ionization isomer of [Ni(NH3)3NO3]Cl. -Chemistry

Description : Give IUPAC name of ionization isomer of [Ni(NH3)3NO3]Cl. -Chemistry

Last Answer : IUPAC name : Triammine nitrato nickel (III) chloride

which spin isomer would be 100% at OK?

Description : which spin isomer would be 100% at OK?

Last Answer : Ans. PARA H2

While separating a mixture of ortho and para-nitro phenols by steam distillation, name the isomer which will be steam volatile. Give reasons.

Description : While separating a mixture of ortho and para-nitro phenols by steam distillation, name the isomer which will be steam volatile. Give reasons.

Last Answer : In o-nitrophenol, there is intramolecular hydrogen bonding as follows : In p-nitrophenol, there is intramolecular hydrogen bonding as follows :   Due to intermolecular H ... -nitrophenol. Hence o-nitraphenol due to its lower b. p. is steam volatile while pnitrophenol is not.

Which of the following is optically inactive? a. equimolar mixture of enantiomers b. Solution of pure enantiomer c. Mixture of enantiomers with enantiomeric excess of one isomer d. Molecule without symmetry elements

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Last Answer : a. equimolar mixture of enantiomers

What is the melting point of pentane ?

Last Answer : melting point of pentane - 130 degrees

Is pentane an unsaturated hydrocarbon?

Description : Is pentane an unsaturated hydrocarbon?

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Iso-octane is used as a reference substance in the definition of octane number and it is assigned an octane number value of 100. Iso-octane is chemically known as (A) α-methyl naphthalene (B) 2-2-4 tri methyl pentane (C) 1, 3 butadiene (D) Tetra methyl ethylene

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Last Answer : (B) 2-2-4 tri methyl pentane

Write the next homologue of Methane and Pentane

Description : Write the next homologue of Methane and Pentane

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Write the isomers of pentane (C 5 H 12 ).

Description : Write the isomers of pentane (C 5 H 12 ).

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Last Answer : (B) 100

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Description : What single isomer would be found in greatest yield when isopropyl chloride undergoes a Friedel-Crafts alkylation with t-butylbenzene ?

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Which one of the following has an optical isomer ? (en=ethylenediamine )

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Which of the following has an optical isomer?

Description : Which of the following has an optical isomer?

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The ionisation isomer of `[Cr(H_(2)O)_(4) Cl (NO_(2))]Cl`

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(A) Nuclear isomers have same atomic number and same mass number but with different radioactive properties. `U_((A))` and `U_((Z))` are nuclear isomer

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Assertion: `p`-nitrophenol is a stronger acid than `o`-nitrophenol. Reason: Intramolecular hydrogen bonding makes the `o`-isomer weaker than the `p-`i

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Which of the following is not an isomer of diethyl ether?

Description : Which of the following is not an isomer of diethyl ether?

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An isomer of ethanol is:

Description : An isomer of ethanol is:

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What type of isomer for C2H2Br2?

Description : What type of isomer for C2H2Br2?

Last Answer : Probable you think to CH2Br2, dibromomethane.

Living cells have the unique ability to synthesize only _________ the form of optical isomer due to _________. (A) ‘d’ form, stereospecific enzymes (B) ‘l’ form stereospecific enzymes (C) ‘d’ form, DNA (D) ‘L’ form, DNA

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An L-isomer of monosaccharide formed in human body is (A) L-fructose (B) L-Erythrose (C) L-Xylose (D) L-Xylulose

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Which isomer is common in nature?

Description : Which isomer is common in nature? 

Last Answer : D variety of sugars are common in nature.

Lindane is (A) Not a fumigant (B) BHC (Benzene Hexachloride) containing 99% γ-isomer (C) A by-product of BHC manufacture (D) Both (B) and (C)

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The covalent bonding of atoms forms a/an a. Molecule. b. Ion. c. Element. d. Isomer.

Description : The covalent bonding of atoms forms a/an a. Molecule. b. Ion. c. Element. d. Isomer.

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Methyl propane is an isomer of

Description : Methyl propane is an isomer of

Last Answer : n-butane

The compound that has the least value for octane number is – (1) 2-methyl heptane (2) Iso-octane (3) 2,2-dimethyl hexane (4) n-heptane

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What is the principle of Dumas method for the estimation of N in the organic compound?

Description : What is the principle of Dumas method for the estimation of N in the organic compound?

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An organic compound (A) has a molecular weight 78 and an empirical formula CH. (A) is resistant to attack by oxidizing agents but undergoes substitution and addition reactions. X-ray analysis shows that the distance between adjacent carbon atoms is 1.39Å (intermediate between single and double bond lengths). The evidence suggests that compound (A) is (a) Benzene (b) Cyclohexane (c) Toluene (d) n-Hexane

Description : An organic compound (A) has a molecular weight 78 and an empirical formula CH. (A) is resistant to attack by oxidizing agents but undergoes substitution and addition reactions. X-ray analysis shows that the ... suggests that compound (A) is (a) Benzene (b) Cyclohexane (c) Toluene (d) n-Hexane

Last Answer : Benzene

An organic compound (A) has a molecular weight 78 and an empirical formula CH. (A) is resistant to attack by oxidizing agents but undergoes substitution and addition reactions. X-ray analysis shows that the distance between adjacent carbon atoms is 1.39Å (intermediate between single and double bond lengths). The evidence suggests that compound (A) is (a) Benzene (b) Cyclohexane (c) Toluene (d) n-Hexane

Description : An organic compound (A) has a molecular weight 78 and an empirical formula CH. (A) is resistant to attack by oxidizing agents but undergoes substitution and addition reactions. X-ray analysis shows that the ... suggests that compound (A) is (a) Benzene (b) Cyclohexane (c) Toluene (d) n-Hexane

Last Answer : Benzene

The compound methylamine, H3C–NH2, contains a C–N bond. In this bond, which of the following best describes the charge on the nitrogen atom? (a) slightly positive (b) uncharged (c) slightly negative (d) –1

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Last Answer : slightly negative

What is the possible number of optical isomers for a compound containing n dissimilar asymmetric carbon atoms? (a) n2 (b) 2n (c) n + 1(d) n + 2

Description : What is the possible number of optical isomers for a compound containing n dissimilar asymmetric carbon atoms? (a) n2 (b) 2n (c) n + 1 (d) n + 2

Last Answer : 2n