ALCOHOLS, PHENOLS AND ETHERS QUIZ-11
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IIT JEE exam which consists of JEE Main and JEE Advanced is one of the most important entrance exams for engineering aspirants. The exam is held for candidates who are aspiring to pursue a career in the field of engineering and technical studies.
Chemistry is important because everything you do is chemistry! Even your body is made of chemicals. Chemical reactions occur when you breathe, eat, or just sit there reading. All matter is made of chemicals, so the importance of chemistry is that it's the study of everything..
Q1. Statement 1:The order of reaction can have fractional value.
Statement 2: Phenol cannot be chlorinated because the ring is susceptible to oxidation by Cl_2
Solution
(d) Both statement and explanation are correct but the reason is different
(d) Both statement and explanation are correct but the reason is different
Q2.Statement 1: The solubility of n-alcohol in water decreases with an increase in molecular weight
Statement 2: The reactive proportion of the hydrocarbon part in alcohols increases with increasing molecular weight permits enhanced hydrogen bonding with water:
Solution
(a) Nacl has fcc structure in which each Na^+ is surrounded by six ions and vic versa.In this octahedral arrangement, coordination, number of bothNa^+ and Cl^- is six for which radius ratio lies between 0.414 and 0.732. The radius ratio does not allow Cl^- ions to touch each other.
(a) Nacl has fcc structure in which each Na^+ is surrounded by six ions and vic versa.In this octahedral arrangement, coordination, number of bothNa^+ and Cl^- is six for which radius ratio lies between 0.414 and 0.732. The radius ratio does not allow Cl^- ions to touch each other.
Q3. Statement 1: Diphenyl ether (I) on dinitration gives the product (II)
Statement 2: The ring with first nitro group is deactivated by e ̅-withdrawing NO_2 group, so the second nitro group enters the other ring
Solution
(c) Explanation is correct reason for statement.
(c) Explanation is correct reason for statement.
Q4. Statement 1: Dehydration of gives CH_3 CH_2 CH=CH_2 as the minor product ad CH_3 CH=CHCH_3 as the major product Statement 2: When glycerol is heated with hydrogen iodide, only allyl iodide is formed
Solution
(a) Packing fraction in fcc = 74% Packing fraction in bcc = 67.9%
(a) Packing fraction in fcc = 74% Packing fraction in bcc = 67.9%
Q5.Statement 1: Ethers on reaction with air and light form hydroperoxides. These peroxides decompose violently at high temperature. Allyl n-propyl ether withO_2 in light gives mainly 1-hydroperoxide ally-n-propyl ether
Statement 2: The reaction proceeds via the formation of radical anion
Solution
(d) Both statement and explanation are correct but reason for the statement is different
(d) Both statement and explanation are correct but reason for the statement is different
Q6 Statement 1: Alcohols have higher boiling points than alkanes
Statement 2: O-H bond of alcohol is highly polarized
Solution
(a) For fcc, Number of O^(2-) ions =8(corners)×1/8per corner share +6 (faces)×1/2per face share=4 Number of Si^(4+) ions =1/4×OV=1/4×4=1/unit cell Number Fe^(2+) ions =1/4×TV=1/4×8=2/unit cell ⇒Fe_2 SiO_4
(a) For fcc, Number of O^(2-) ions =8(corners)×1/8per corner share +6 (faces)×1/2per face share=4 Number of Si^(4+) ions =1/4×OV=1/4×4=1/unit cell Number Fe^(2+) ions =1/4×TV=1/4×8=2/unit cell ⇒Fe_2 SiO_4
Q7. Statement 1: When glycerol is heated with hydrogen iodide, only allyl iodide is formed
Statement 2: With hydrogen iodide, glycerol forms three different compounds like propene, isopropyl iodide and allyl iodide
Solution
Q8. Statement 1: When glycerol is heated with hydrogen iodide, only allyl iodide is formed
Statement 2: p-NO_2-C_6 H_4 O^⊖ is a stronger nucleophile than PhO^⊖
Solution
(c) The distance 0.204 nm comes out to be " a⁄√3 " which corresponds to the perpendicular distance between a corner of unit cell and the plane of the three adjacent corners (Fig. III)
(c) The distance 0.204 nm comes out to be " a⁄√3 " which corresponds to the perpendicular distance between a corner of unit cell and the plane of the three adjacent corners (Fig. III)
Q9.
Statement 1: p- Nitrophenol is a stronger acid than o-nitrophenol
Statement 2: Intramolecular hydrogen bonding makes the o-isomer weaker than the p-isomer
Solution
(a) AB_2 has bcc structure, A^(2+) possess face centred cubic lattice. B^- ions occupy all the (100%) tetrahedral voids. Thus each A^(2+) is in contact with B^- and each B^- with 4A^(2+) ions.
(a) AB_2 has bcc structure, A^(2+) possess face centred cubic lattice. B^- ions occupy all the (100%) tetrahedral voids. Thus each A^(2+) is in contact with B^- and each B^- with 4A^(2+) ions.
Q10.Statement 1: Ether have low dipole moments and sp^3 hybridised oxygen atom
Statement 2: Ethers behaves as Lewis base
Solution
(b) All factual statements
(b) All factual statements
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