ALCOHOLS, PHENOLS AND ETHERS QUIZ-12
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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: 2,6-Diamethyl-4-nitrophenol (I) is more acidic than3,5-dimethyl-4-nitrophenol(II)
Statement 2: It is due to the steric inhibition of the resonance of (-NO_2)group with two (Me) groups in (II)
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: Reduction potential value (E°) of O-benzoquine
(I) is greater than p-benzoquinone (II)
Statement 2: Two adjacent (C=O)groups in(I) destabilise (I) relative to (II)
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: The major products formed by heating compound (A) in
with excess HI are:
Statement 2: ArSN reaction takes place if the ring is activated by EW (e.g., (-NO_2) group), at o-,p-, and m-position
Solution
(c) Explanation is correct reason for statement.
(c) Explanation is correct reason for statement.
Q4. Statement 1: Furan is more soluble than DHF (Dihydrofuran; in H_2 O Statement 2: Greater the e ̅density on the O atom stronger is the H-bonding and more soluble is the ether
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: The boiling point of diethyl ether is greater than furan
Statement 2: Furan is more compact and has less surface area
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: Benzoic acid is stronger acid than phenol
Statement 2: Resonating structures of phenoxide ion has negative charge on less electronegative carbon atom
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: The major products formed by heating
Statement 2: Benzyl carbocation is more stable
Solution
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