Description : Pyridine is less basic than trimethylamine because the lone-pair of electrons on N-atom in pyridine resides in (a) sp2 hybrid orbital (b) sp hybrid orbital (c) sp3 hybrid orbital (d) p-orbital
Last Answer : sp2 hybrid orbita
Description : The carbon atom of a carbonyl group is (a) sp hybridized (b) sp2 hybridized (c) sp3 hybridized (d) None of these
Last Answer : sp2 hybridized
Description : All carbon atoms in anthracene are (a) sp hybridized (b) sp3 hybridized (c) sp2 hybridized (d) None of these
Description : All carbon atoms in naphthalene are (a) sp hybridized (b) sp2 hybridized (c) sp3 hybridized (d) None of these
Description : The carbon atoms in a benzene ring are : (a) sp hybridized (b) sp3 hybridized (c) sp2 hybridized (d) None of these
Description : 1,2-Butadiene has (a) only sp hybridized carbon atoms (b) only sp2 hybridized carbon atoms (c) only sp3 hybridized carbon atoms (d) sp, sp2, sp3 hybridized carbon atoms
Last Answer : sp, sp2, sp3 hybridized carbon atoms
Description : The carbon atoms involved in the double bond of an alkene are (a) sp hybridized (b) sp2 hybridized (c) sp3 hybridized (d) None of these
Description : Triethylamine [(CH3CH2)3N] is a molecule in which the nitrogen atom is __________ hybridized and the CNC bond angle is __________. (a) sp2; >109.5° (b) sp2; 109.5° (d) sp3;
Last Answer : sp3;
Description : What is the hybridization of the carbon atom in CH3NH2? (a) 3sp3 (b) sp (c) sp2 (d) sp3
Last Answer : sp3
Description : What is the hybridization of the nitrogen atom in CH3NH2? (a) sp (b) sp2 (c) sp3 (d) s-sp3
Description : Where are the two lone pairs of electrons of the oxygen atom in an alcohol molecule located? (a) in two p orbitals (b) in two sp orbitals (c) in two sp2 orbitals (d) in two sp3 orbitals
Last Answer : in two sp3 orbitals
Description : What is the hybridization of the oxygen atom in CH3CH2OH? (a) sp (b) 4sp3 (c) sp2 (d) sp3
Description : What is the predicted shape, bond angle, and hybridization for CH3+? (a) trigonal planar, 120°, sp2 (b) trigonal planar, 120°, sp3 (c) trigonal planar, 109.5°, sp2 (d) trigonal pyramidal, 120°, sp2
Last Answer : trigonal planar, 120°, sp2
Description : Pi bonds are formed by the overlap of: w) unhybridized p orbitals x) sp2 hybridized orbitals y) sp hybridized orbitals z) unhybridized s orbitals
Last Answer : ANSWER: W -- UNHYBRIDIZED P ORBITALS
Description : Pyrrole is less basic than pyridine because the lone-pair of electrons on Natom in pyrrole (a) is part of the delocalized π molecular orbital. (b) is not part of the delocalized π molecular orbital. (c) resides in sp2 hybrid orbital (d) resides in sp hybrid orbital
Last Answer : is part of the delocalized π molecular orbital.
Description : The hybridization of nitrogen in an amine is (a) sp (b) sp3 (c) sp2 (d) sp4
Description : What is the hybridization of the carbonyl oxygen in carboxylic acids? (a) sp (b) sp2 (c) sp3 (d) s-sp2
Last Answer : sp2
Description : What two atomic orbitals or hybrid atomic orbitals overlap to form the carbon-carbon σ bond in ethyne? (a) sp3–sp3 (b) sp2–sp2 (c) s–s (d) sp–sp
Last Answer : sp–sp
Description : What is the hybridization of the central carbon of allene (1,2-propadiene)? (a) sp (b) sp2 (c) sp3 (d) p
Last Answer : sp
Description : The lone-pair electrons of the methyl anion occupy a __________ orbital. (a) s (b) sp (c) sp2 (d) sp3
Description : What is the hybridization of the carbon atoms numbered 1 and 2 respectively in the following structure? (a) sp3, sp2 (b) sp2, sp2 (c) sp, sp (d) sp2, sp
Last Answer : sp2, sp
Description : When the carbon atom is sp2 hybridized in a compound, it is bonded to (a) 2 other atoms (b) 4 other atoms (c) 3 other atoms (d) 5 other atoms
Last Answer : 3 other atoms
Description : Which of the following is not correct concerning substitution and elimination reactions of alkyl halides? (a) The electrophile replaces the leaving group. (b) Compounds containing electron-donating groups bonded to an ... replaced by another atom or group in substitution reactions. (d) (a) and (b)
Last Answer : (a) and (b)
Description : Which of the following describes the orientation of bonds in an sp3 hybridized atom? w)triagonal x)linear y)tetrahedral z)planar
Last Answer : ANSWER: Y -- TETRAHEDRAL
Description : The N–H bond in the ammonium ion, NH4+, is formed by the overlap of what two orbitals? (a) sp3–sp3 (b) sp3–sp2 (c) sp2–sp2 (d) sp3–s
Last Answer : sp3–s
Description : Which statement about the carbonyl group is NOT true? (a) The carbonyl carbon is sp2 hybridized. (b) The bond angles among the three atoms attached to the carbonyl carbon are 120°. (c) ... attached to the carbonyl carbon form a nonplanar geometry. (d) The carbonyl group forms resonance structures.
Last Answer : The three atoms attached to the carbonyl carbon form a nonplanar geometry
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.
Description : Which of the following statements about ethene, C2H4, is incorrect? (a) The H–C–H bond angles are approximately 109.5°. (b) There is a total of five sigma bonds. (c) The carbon atoms are sp2 hybridized. (d) The H–C–H bond angles are approximately 120°.
Last Answer : The H–C–H bond angles are approximately 109.5°.
Description : Which of the following contain sp2 hybridized carbon atoms? w) alkanes x) alkenes y) alkynes z) cycloalkanes
Last Answer : ANSWER: X -- ALKENES
Description : Which of the following is not a correct statement about the electrophilic substitution mechanism of benzene? (a) Benzene functions as a nucleophile. (b) Formation of a carbocation intermediate is the ... hybridized carbon in the ring. (d) The addition product is a frequently observed minor product.
Last Answer : The addition product is a frequently observed minor product.
Description : Which of the following statements about benzene is correct? (a) All of the carbon atoms are sp3 hybridized. (b) It has no delocalized electrons. (c) The carbon-carbon bond length is longer than that of ethane. (d) It is a planar molecule.
Last Answer : It is a planar molecule.
Description : Which of following statements is false about propane? (a) all bond angles are 109.5° (b) each carbon is sp3 hybridized (c) the compound is combustible (d) the compound undergoes polymerization to give polypropylene.
Last Answer : the compound undergoes polymerization to give polypropylene.
Description : What is the hybridization and geometry of the carbonyl carbon in carboxylic acids and their derivatives? (a) sp3, tetrahedral (b) sp2, trigonal planar (c) sp2, tetrahedral (d) sp3, trigonal planar
Last Answer : sp2, trigonal planar
Description : Which of the following statements is correct for a saturated alkyl halide? (a) the C-X bond results from overlap of the s orbital of carbon and the p orbital of the halogen (X) (b) the C-X bond ... the C-X bond results from overlap of the sp2 orbital of carbon and the p orbital of the halogen (X)
Last Answer : the C–X bond results from overlap of the sp3 orbital of carbon and the p orbital of the halogen (X)
Description : What orbitals overlap to create the H–C bond in CH3+? (a) sp3–sp3 (b) sp2–sp3 (c) s–p (d) s–sp2
Last Answer : s–sp2
Description : The delocalized π system in benzene is formed by a cyclic overlap of 6 orbitals. (a) s (b) p (c) sp (d) sp2
Last Answer : p
Description : For which molecule can the bonding be described in terms of sp3 hybrid orbitals of the central atom? w) CH4 x) SF6 y) BF3 z) PCL5
Last Answer : ANSWER: B -- CH4
Description : In a period from Li to F, ionisation potential – (1) cannot be predicted (2) increases (3) decreases (4) remains same
Last Answer : (1) cannot be predicted
Description : All chiral D-sugars rotate plane-polarized light : (a) clockwise (b) counterclockwise (c) +20.0° (d) in a direction that cannot be predicted but must be determined experimentally
Last Answer : in a direction that cannot be predicted but must be determined experimentally
Description : In a period from Li to F, ionisation potential (1) cannot be predicted (2) increases (3) decreases (4) remains same
Last Answer : cannot be predicted
Description : How many atoms are attached to an atom having a sp hybridization? (a) 0 (b) 1 (c) 2 (d) 3
Last Answer : 2
Description : Who received the Nobel Prize in Physics in 1922 for his theory which predicted the electron orbits of the Hydrogen atom?
Last Answer : ANSWER: (NIELS) BOHR
Description : SQL> SELECT * FROM MY_SCHEMA.MY_TABLE; SP2-0678: Column or attribute type cannot be displayed by SQL*Plus Why I’m getting this error?
Last Answer : The table has a BLOB column.
Description : At the same gas flow rate, the pressure drop in a packed tower being irrigated with liquid __________ that in dry packed tower. (A) Is greater than (B) Is lower than (C) Is same as (D) Cannot be predicted as data are insufficient
Last Answer : (A) Is greater than
Description : In furnaces operating at very high temperature (say) 1250°C, e.g. soaking pit), the maximum heat transfer takes place by (A) Conduction (B) Convection (C) Radiation (D) Cannot be predicted
Last Answer : (C) Radiation
Description : Power loss in an orificemeter is __________ that in a Venturimeter. (A) Less than (B) Same as (C) More than (D) Data insufficient, cannot be predicted
Last Answer : (C) More than
Description : Which of the following interhalogens exist at room temperature and have central atom hybridization `sp^3d^2`. (a) `ClF_3` (b) `ClF_5` (C) `BrCl_3` (d)
Last Answer : Which of the following interhalogens exist at room temperature and have central atom hybridization `sp^3d^2`. (a ... `lBr_5 `(j) `BrF_3` (k) `ClBr_5`
Description : The species in which the cantral atom uses `sp^(2)` hybrid orbital in its bonding is:
Last Answer : The species in which the cantral atom uses `sp^(2)` hybrid orbital in its bonding is: A. `PH_(3)` B. `NH_(3)` C. `CH_(3)^(+)` D. `SbH_(3)`
Description : In which of the following central atom makes use of `sp^(3)` hybrid orbitals
Last Answer : In which of the following central atom makes use of `sp^(3)` hybrid orbitals A. `SO_(2)` B. `SO_(3)` C. `H_(2)S` D. `H_(2)O`
Description : Which of the following reagents will react with furan to form 2-furansulfonic acid? (a) SO3 in pyridine at 100°C (b) Dilute H2SO4 at 200°C (c) SO2 at 100°C (d) Dilute H2SO4 at 100°C
Last Answer : SO3 in pyridine at 100°C