Description : Which of the following alkanes will have the highest boiling point? (a) n-Octane (b) Isopentane (c) n-Butane (d) Neopentane
Last Answer : n-Octane
Description : Consider the three isomeric alkanes n-hexane, 2,3-dimethylbutane, and 2- methylpentane. Which of the following correctly lists these compounds in order of increasing boiling point? (a) 2,3-dimethylbutane < 2- ... < 2, 3-dimethylbutane < n-hexane (d) n-hexane < 2-methylpentane < 2,3-dimethylbutane
Last Answer : 2,3-dimethylbutane < 2-methylpentane < n-hexane
Description : 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
Last Answer : (4) n-heptane Explanation: Octane rating or octane number is a standard measure of the performance of a motor or aviation fuel. The higher the octane number, the more compression the fuel can withstand. Isooctane (upper) has an octane rating of 100 whereas n-heptane has an octane rating of O.
Description : 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
Last Answer : n-heptane
Description : Which of the following binary systems is an example of a maximum boiling azeotrope? (A) Water-hydrochloric acid (B) Acetone-carbon disulphide (C) Water-ethyl alcohol (D) n-heptane-n-octane
Last Answer : (A) Water-hydrochloric acid
Description : How do the boiling points of butane, propane, and ethane compare? (a) the boiling point of ethane is greatest. b) the boiling point of butane is greatest. (c) the boiling point of propane is greatest. (d) there is no relationship among these three alkanes and their boiling points
Last Answer : the boiling point of butane is greatest.
Description : The branching of alkanes that produces symmetrical structures : (a) raises the boiling point ; raises the melting point (b) raises the boiling point ; lowers the melting point (c) lowers the boiling point ; lowers the melting point (d) lowers the boiling point ; raises the melting point
Last Answer : raises the boiling point ; raises the melting point
Description : As the molecular weight of alkanes increases, how do the boiling point and melting point change? (a) boiling point increases ; melting point increases. (b) boiling point increases ; ... decreases (d) boiling point increases ; melting point increases sequentially for alkanes over four carbons.
Last Answer : boiling point increases ; melting point increases sequentially for alkanes over four carbons.
Description : The high boiling points of alcohols, as compared to the corresponding alkanes, are due to (a) Hydrogen bonding (b) Heavy oxygen atom (c) Water solubility (d) None of these
Last Answer : Hydrogen bonding
Description : Which statements about alkenes and alkanes of corresponding chain lengths is true? (I) Alkenes have slightly lower melting points than alkanes (II) Alkenes have slightly higher melting points than alkanes (III) Alkenes have higher boiling ... (a) I and III (b) II and IV (c) I and IV (d) II and III
Last Answer : I and III
Description : A fuel with octane number 90 means it is as good as a mixture of : (a) 90% Isooctane + 10% n-heptane (b) 90% n-Heptane + 10% isooctane (c) 2 Litre of 90% isooctane + 2 litre of benzene (d) 2 Litre of 90% n-heptane + 2 litre of benzene
Last Answer : 90% Isooctane + 10% n-heptane
Description : Which of the following compounds is assigned the Octane Number of 100 : (a) n-Heptane (b) 2,3,3-Trimethylpentane (c) n-Octane (d) 2,2,4-Trimethylpentane
Last Answer : 2,2,4-Trimethylpentane
Description : Which of the following compounds is assigned the Octane Number of zero : (a) n-Octane (b) 2,3,3-Trimethylpentane (c) n-Heptane (d) 2,2,4-Trimethylpentane
Last Answer : n-Heptane
Description : In any fuel, the percentage by volume of isooctane in a mixture of isooctane and n-heptane which will knock under same conditions as the fuel being tested, is called : (a) Cracking (b) Iodine number (c) Aromatization (d) Octane number
Last Answer : Octane number
Description : Benzene reacts with H2 at 150°C at 30 atm in the presence of Ni catalyst to give (a) Cyclohexane (b) Cyclohexene (c) n-Hexane (d) No reaction occurs
Last Answer : Cyclohexane
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
Description : Which of the following compounds does not dissolve in concentrated H2SO4 on warming? (a) n-Hexane (b) Diethyl ether (c) 1-Butene (d) Aniline
Last Answer : n-Hexane
Description : The two reference fuel used for cetane rating are (a) Cetane and iso octane (b) Cetane and tetra ethyl lead (c) Cetance and n-heptane (d) Cetane and α- methyl naphthalene
Last Answer : Ans : d
Description : Reference fuels for knock rating of SI engine fuels would include (a) Iso octane alpha methyl naphthalene (b) Normal octance and aniline (c) Isooctance and n octane (d) N heptane and iso octane
Description : Octane number of n-heptane is assumed to be (A) 100 (B) 0 (C) 70 (D) ∞
Last Answer : (B) 0
Description : The theoretical minimum work required to separate one mole of a liquid mixture at 1 atm, containing 50 mole % each of n- heptane and n octane into pure compounds each at 1 atm is (A) -2 RT ln 0.5 (B) -RT ln 0.5 (C) 0.5 RT (D) 2 RT
Last Answer : (B) -RT ln 0.5
Description : Which one of the following petroleum refinery products has the lowest boiling point? (1) Kerosene (2) Gasoline (3) Diesel (4) Lubricating oil
Last Answer : (4) Lubricating oil Explanation: Lubricating oil is the most commonly used lubricant because of its wide range of possible applications. The two basic categories of lube oil are mineral and synthetic.
Description : Use the information and data given below to answer the questions Stronger intermolecular forces result in higher boiling point Strength of London forces increases with the number of electrons in the molecule ... here? (c) Why is the boiling point of HF highest while that of HCl lowest?
Last Answer : Ans :( a) In the molecules HCl, HBr and HI, dipole-dipole interaction and London forces are present. (b) Dipole moment of HCl > HBr > HI but boiling point of HCl < HBr
Description : Consider a 1°, 2° and 3° amine, all of equivalent molecular weight. Which amine is most likely to have the lowest boiling point? (a) 1° amine (b) 2° amine (c) 3° amine (d) Not enough information to determine
Last Answer : 3° amine
Description : Which of the following has the lowest boiling point? (a) CH3CH2OH (b) CH3CH2CH2SH (c) HOCH2CH2OH (d) CH3CH2CH2OH
Last Answer : CH3CH2CH2SH
Description : The following compounds have identical molecular weights. Which would have the lowest boiling point? (a) 1-Methoxypropane (b) 1-Butanol (c) 1,1-Dimethylethanol (d) 2-Butanol
Last Answer : 1-Methoxypropane
Description : The compound with the lowest boiling point is (a) H2O (b) CH3CH2OH (c) CH3OCH3 (d) CH3CH2CH3
Last Answer : CH3CH2CH3
Description : Rank the following substances in order of increasing boiling point (lowest → highest): (1) CH3CH2CH2CH2OH, (2) (CH3)2CHOCH3, (3) (CH3)3COH (a) (1) < (2) < (3) (b) (2) < (1) < (3) (c) (2) < (3) < (1) (d) (3) < (2) < (1)
Last Answer : (2) < (3) < (1)
Description : Which of the following will have the lowest boiling point? (a) CH3Cl (b) CH4 (c) CH2Cl2 (d) CHCl3
Last Answer : CH4
Description : Based on the intermolecular forces involved, which of the following molecules will have the lowest boiling point? w) ethane x) methyl alcohol y) methyl amine z) methyl fluoride
Last Answer : ANSWER: W -- ethane
Description : Which of the following aqueous solutions would hav the lowest boiling point? Would it be a 1.0 molal solution of: w) Hydrochloric acid x) Sodium Hydroxide y) Acetic Acid, z) Magnesium Chloride
Last Answer : ANSWER: Y -- ACETIC ACID
Description : Catalyst used in conversion of n-hexane into benzene in:
Last Answer : Catalyst used in conversion of n-hexane into benzene in: A. `AlCl_(3)` B. `SiO_(2)-Al_(2)O_(3)` C. `Cr_(r)O_(3)-Al_(2)O_(3)` D. `MnO_(2)`
Description : The reaction that give good yield of n-Hexane is :-
Last Answer : The reaction that give good yield of n-Hexane is :- A. `undersetoverset(Na//"dry ether")(rarr)(CH_(3)CH_(2 ... 2)CH_(2)CH_(2)CH_(2)Cl` D. All of them
Description : How does the melting point of propane and ethane compare? (a) the melting point of propane is greater. (b) the melting point of ethane is greater. (c) the melting points are within 5°C of one another. (d) no relationship exists among these alkanes and their melting point
Last Answer : the melting point of ethane is greater.
Description : Gasoline with an octane number of 90 is equivalent in knocking characteristics to a mixture of heptane and isooctane of the following composition : (a) 20% heptane + 80% isooctane (b) 90% heptane + 10% isooctane (c) 80% heptane + 20% isooctane (d) 10% heptane + 90% isooctane
Last Answer : 10% heptane + 90% isooctane
Description : How many isomers are possible for heptane? (a) 9 (b) 10 (c) 11 (d) 12
Last Answer : 9
Description : Which petroleum refinery product has the lowest boiling point? -General Knowledge
Last Answer : The answer is 'Gasoline'
Description : Which petroleum refinery product has the lowest boiling point? -Do You Know?
Last Answer : answer:
Description : What is a mixture with the lowest constant boiling point ?
Last Answer : When a mixture boils simultaneously at a temperature lower than the boiling point of its components , it is called a mixture with the lowest fixed boiling point.
Description : The lowest boiling point of helium is due to its
Last Answer : The lowest boiling point of helium is due to its A. inertness B. Gaseous nature C. High polarisability D. Weak van der Waals forces between atoms
Description : Which of the following has lowest boiling point
Last Answer : Which of the following has lowest boiling point A. `H_(2)O` B. `H_(2)Se` C. `H_(2)S` D. `H_(2)Te`
Description : Which temperature for a lubricating oil will be lowest ? (A) Flash point (B) Fire point (C) Pour point (D) Boiling
Last Answer : Ans: C
Description : Which petroleum refinery product has the lowest boiling point?
Last Answer : Gasoline
Description : The distillation carried out in such a way that the liquid with the lowest boiling point is first evaporated and recondensed, then the liquid with the next higher boiling point is then evaporated and ... is called A. cracking B. carbonisation C. fractional distillation D. full distillation
Last Answer : Answer: C
Description : 1. Which country has the briefest Constitution in the world? 2. Which petroleum refinery product has the lowest boiling point? 3. In which policy India opted for Mixed Economy'? 4. In which state ... was given in which year? 20. During which reign was the East India Company founded in London?
Last Answer : Answer : 1. USA 2. Gasoline 3. Industrial Policy of 1948 4. Andhra Pradesh 5. Firdausi 6. 3½ ft 7. Hargobind Khurana 8. B. R. Ambedkar 9. NH 7 10. Punjab and Sind 11. Neutron 12. Junko Tabei 13. ... 16. Dr. F G. Banting 17. About 3 years since Dec 9, 1946 18. Wrought iron 19. 1991 20. Akbar
Description : Explain the effect of increasing the temperature of a liquid, on intermolecular forces operating between its particles. What will happen to the viscosity of a liquid if its temperature is increased? Arrange the following in increasing order of viscosity-water, hexane, glycerine.
Last Answer : Ans. On increasing the temperature , the kinetic energy of liquid molecules increases so that it can overcome the attractive forces between the molecules and hence liquid can flow more easily i.e. viscosity decreases. Order of increasing viscosity : hexane < water < glycerine.
Description : How many isomers are possible for hexane? (a) 4 (b) 5 (c) 6 (d) 7
Last Answer : 5