JIPMER 2010: Which of the following compounds has carbon in a lowest oxidation state? 10:00 AM to 7:00 PM IST all days. Among the alcohols, ethanol, which is considered as the key compound produced by yeasts and LAB, proved to be the most dominant in all samples. Which two compounds among the following can be prepared from cyclopentene in a one-step reaction? Among these 3 BeCL2 has the greatest covalent character. Which of the following is a Newman projection for the following compound as viewed down the indicated bond in the conformation shown? HCl is a weak reducing agent. Which compound among the following is a diastereomer of compound 17? Among the given compounds, benzyl amine is most basic due to localized lone pair of electron on nitrogen atom while other compounds have delocalized lone pair of electron. If an element is in its intermediate oxidation state in a compound, the compound can function both as an oxidising agent as well as reducing agent. Option 2) Serine . The compound below is estradiol, a hormone that triggers the development of female secondary sex characteristics. PqsR ligands 2 – 4 that were identified using the target-based approach demonstrated no selectivity for PqsR over LasR, possibly due to the similarity of binding pockets of both of these proteins. Much of the diversity and complexity of organic forms is due to the capacity of carbon atoms for bonding with one another in various chain and ring structures and three-dimensional conformations as well as for linking with other … Identify the correct statements for the behaviour of ethane-1, 2-diamine as a ligand. Of the carbocations drawn, which is the most stable? MEDIUM. A) I B) II C) III D) IV. (i) [Co(en)3]3+ (ii) trans– [Co(en)2 Cl2]+ (iii) cis– [Co(en)2 Cl2]+ (iv) [Cr (NH3)5Cl] Solution: Option (i) and (iii) are the answers. The correct option is: (d) I > III > II > IV Explanation: The conjugate acid formed by addition of a proton to I is stabilised by two equivalent resonance structures and hence, compound I is the most basic. Which of the following facts about the complex [Cr (NH3)6 ]Cl3 is wrong? Give simple chemical tests to distinguish between the following pairs of compounds. K O 2 : K + has all electrons paired and O 2 − has one unpaired electron so is paramagnetic. The decreasing thermal thermal stability of the hydrogen halides from HF to HI indicates that the reducing character increases down the group as : HF < HCl < HBr < HI Thus, HF is not a reducing agent at all. Identify the optically active compounds from the following : NCERT Exemplar Solutions of Class 12 Chemistry Chapter 9 Coordination Compounds. Phylogeny. The Covalency of compounds depends on the cations and anions.The smaller the cation the greater the polarising power and so it will distort the electron cloud of anion sufficiently. * * In addition to the above answers i would like to point out few thumb rules to determine the order of electrophilic substitution in the nucleus in the presence of different activators and deactivators. asked Mar 17, 2019 in Chemistry by Daisha (70.5k points) Amongst the following, the most basic compound is (a) benzylamine (b) aniline (c) acetanilide (d) p-nitroaniline. Contact us on below numbers. J K CET 2016: Optically active compounds among the following compounds are (i) 1 -Phenylethanol (ii) 2 -Phenylpropan- 1 -ol (iii) 2 -Phenylpro Which structure represents a meso compound? Check Answer and Solution f (hint: count the Carbons) burning natural gas. Contact. D. Benzylamine . (A) Only (B) and (C) and (D) and Solution: (D) on reaction with the given compounds produce . What is the name of this hydrocarbon? 1800-212-7858 / 9372462318. Hydride - Hydride - Covalent hydrides: Covalent hydrides are primarily compounds of hydrogen and nonmetals, in which the bonds are evidently electron pairs shared by atoms of comparable electronegativities. (c) Write the compound which is most reactive towards β-elimination reaction. Ask Question Asked 4 years, 6 ... is the most acidic compound among the 4 due to ring expansion only. UP CPMT 2010: Among the following which is not π-bonded organometallic compound ? Meso-compound: A term for the achiral member(s) of a set of diastereoisomers which also includes one or more chiral members. HARD jee. Academic Partner. Reducing the length of the column will shorten retention times and reduce its effective separation ability. (2.5 pts) Cl Br b) Rank the following compounds from most to least reactive in an SN1 reaction (2.5 pts). So, this compound is optically active. which one of the following compounds is more easily hydrolysed by koh and why 2 chloro butane or chloropropane - Chemistry - TopperLearning.com | k7ko3hjj. Basic Strength of Amines - The basic strength of the amine is expressed as equilibrium constant K b - wherein. (b) Write the compound which is optically active. pentane. GO TO QUESTION. Option 4) Asparagine . (A) K[PtCl3(η2-C2H4)] (B) Fe(η5-C5H5)2 (C) Cr(η6-C6H6)2 (D) (CH3 A) I B) II C) III D) IV . Need assistance? The magnetic moment (spin only) of [NiCl4]2− is. Answer. AIEEE 2011. B. Uranium hydride (UH 3) is the most important hydride of the actinoid metals. Some of the examples are: 1. Answers (1) A admin . 6NH3 (molar mass = 267.5 g mol–1) is … Become our. In the following graph. A solution containing 2.675g of CoCl3. (iii) Write the compound which is most reactive towards b-elimination reaction. organic-chemistry homework acid-base aromatic-compounds. Which activity most likely involves the direct use of saturated hydrocarbons? On the contrary, a longer column has increased separation ability, but longer retention times. Option 3) Histidine . Among the following, the pa... chemistry. B. Acetanilide. The following compounds are given to you: 2-Bromopentane, 2-Bromo-2-methylbutane, 1-Bromopentane (a) Write the compound which is most reactive towards S N 2 reaction. Among tested compounds, only 6c demonstrated relative selectivity for PqsR, whereas the rest of the molecules had shown dual inhibition of both QS pathways . Which among the following will be named as dibromidobis (ethylene diamine) chromium(III) bromide ? Or if I am wrong, please correct me with a detailed solution. 2) 2-bromopentane (Figure B) has chiral carbon in it. 2U + 3H 2 → 2UH 3 This compound is useful chemically for the preparation of uranium compounds. Education Franchise × Contact Us. For example, most nonmetal hydrides are volatile compounds, held together in the condensed state by relatively weak van der Waals intermolecular interactions (see chemical bonding). N 2 O: all electrons are paired so is diamagnetic. Estradiol is best described as which of the following? Most acidic compound amongs the following unsaturated ketones? 22. This is due to there being less area for gas molecules to travel, therefore less time for the column to separate the compounds well. Primary alkyl halides are most reactive for S N 2. Volatility depends on intermolecular interactions of a compound, as molecular weight increases so do the Vander wals forces. Which is the most suitable reagent among the following to distinguish compound (3) from rest of the compounds? AIEEE 2012 . N a 2 O 2 : N a + has all electrons paired and O 2 − 2 has no unpaired electron. Basicity in these compounds is due to the presence lone pair of electrons on N atom of N H 2 group. (ii) Write the compound which is optically active. Among the following compounds most basic amino acid is : Option 1) Lysine . Among the following compounds, the most acidic is(a) p-nitrophenol (b) p-hydroxybenzoic acid(c) o-hydroxybenzoic acid (d) p-toluic acid - 8161223 Which of the following cycloalkanes has the most angle strain? A) I B) II C) III D) IV. (i) Propanal and Propanone (ii) Acetophenone and Benzophenone (iii) Phenol and Benzoic acid (iv) Benzoic acid and Ethyl benzoate (v) Pentan-2-one and Pentan-3-one (vi) Benzaldehyde and Acetophenone (vii) Ethanal and Propanal. Acetic acid (hexyl ester) was not previously reported in sourdough fermented breads. Among the following, the paramagnetic compound is: A. N a 2 O 2 B. N 2 O. C. K O 2 D. None of these. The enzyme dissimilatory (bi)sulfite reductase, dsrAB (EC 1.8.99.5), that catalyzes the last step of dissimilatory sulfate reduction, is the functional gene most used as a molecular marker to detect the presence of sulfate-reducing microorganisms. 27. The State of Minnesota’s Department of Health classifies volatile organic compounds as the following; “Volatile organic compounds (VOCs) are a large group of chemicals that are present in many products that are used to construct and maintain a home. (i) 1-bromopropane. Which of the following is a wedge and dash structure for the following Newman projection? A. Among the following compounds, the most basic compound is : Further 2 ° amines (III) are more basic than 1 ° amines (II) while amides (IV) are least basic due to delocalisation of lone pair of electrons of N over the CO group. The slope of line gives the information of the (A) Value of (B) Value of (C) Value of AIEEE 2011. C. Aniline. Write IUPAC names of the products obtained by the ozonolysis of the following compounds : asked Jun 7, 2018 in Chemistry by rubby (51.6k points) hydrocarbons; … How to solve this problem- Among the following compounds most basic amino acid is : # Engineering. 3.0k views. The presence of … Following compounds are given to you : 2-Bromopentane, 2-Bromo-2-methylbutane, 1-Bromopentane (i) Write the compound which is most reactive towards SN2 reaction. 1 answer. For example: For example: There is a plane of symmetry in the examples given in IUPAC GOLD book (shown in colour) . organic chemistry; jee; jee mains; Share It On Facebook Twitter Email. Structure of the given compounds are: 1) As we can see in the above figures, (A), contains the least steric hindrance so towards the S N 2 reaction 1- bromopentane will be most reactive. AIIMS 2004: Among the following the aromatic compound is (A) Image A (B) Image B (C) Image C (D) Image D. Check Answer and Solution for above question For Study plan details. 1 Answer +1 … B. Among the following compounds, which will produce with . Answer. When lone pair is localized on N atom, it can be easily donated to a suitable Lewis acid. asked Dec 26, 2018 in Hydrocarbons by monuk (68.0k points) hydrocarbons; neet; 0 votes. This pyrophoric black powder is prepared by reaction with hydrogen at 300 °C (570 °F). Post Answer. 26. Acetic acid (hexyl ester) was detected in sourdough bread samples, although in lower relative proportion as compared to other compounds. GO TO QUESTION. Amongest the following the most basic compound is: A. p-nitro aniline. Amongst the following, the most basic compound is (a) benzylamine (b) aniline ← Prev Question Next Question → 0 votes . GO TO QUESTION. or own an. As we … an alkyne an alkene an alkane an aromatic. Carbon - Carbon - Compounds: More than one million carbon compounds have been described in chemical literature, and chemists synthesize many new ones each year. a) Rank the following compounds from most to least reactive in an S 2 reaction. (A) CO2 (B) CO (C) CH4 (D) CCl4. The answer given is (a) but explanation is needed . Is not π-bonded organometallic compound estradiol is best described as which of the following cycloalkanes has greatest. That triggers the development of female secondary sex characteristics these compounds is due to presence... A ) but explanation is needed: Option 1 ) Lysine the ( a ) I B II. A term for the preparation of uranium compounds the column will shorten retention times and reduce effective! Sourdough bread samples, although in lower relative proportion as compared to other compounds ) CH4 ( D IV! O 2 − has one unpaired electron so is paramagnetic following Newman projection A. p-nitro aniline as... 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Which activity most likely involves the direct use of saturated hydrocarbons 2018 in hydrocarbons by monuk ( 68.0k )...