Description : What happens to the dissociation of PCl5 in a closed vessel if He gas is introduced into it at the same temperature?
Last Answer : Ans. No effect.
Description : Explain why PCl5 is trigonal bipyramidal and IF5is square pyramidal?
Last Answer : Ans. PCl5 has 5 bond pairs of electrons around central atom while in IF5 there are 5 bond pair & 1 lone pair of electrons around central atom.
Description : Are all the five bonds in PCl5 molecule equivalent ?
Last Answer : Ans – PCl5 has a trigonal bipyramidal structure and the three equatorial p-cl bonds are equivalent . while trhe two axial bonds are different and longer than equatorial bonds.
Description : Compound (A) when reacted with PCl5 and then with ammonia gave (B). Compound (B) when treated with bromine and NaOH, produced (C). Compound (C) on treatment with NaNO2/HCl at 0°C and then boiling with H2O ... Compound (A) is (a) o-Toluic acid (b) o-Chlorotoluene (c) m-Toluic acid (d) o-Bromotoluene
Last Answer : o-Toluic acid
Description : Which of the following compounds will react with PCl5 least vigorously? (a) Ethanol (b) Acetic acid (c) Phenol (d) Benzoic acid
Last Answer : Phenol
Description : Which of the following reagents will react with acetamide to form methylamine? (a) LiAlH4 (b) Br2/NaOH (c) PCl5 (d) H2/Ni
Last Answer : Br2/NaOH
Description : Acetamide can be converted into methylamine by (a) P2O5 (b) Br2/NaOH (c) PCl5 (d) LiAlH4
Description : Butyric acid reacts with PCl5 to give (a) Benzoyl chloride (b) 1-Chlorobutane (c) Butyryl chloride (d) 1-Chloropropane
Last Answer : Butyryl chloride
Description : Organic compound (A), C4H8O, does not react with sodium or PCl5. However, it reduces an alkaline solution of a copper (II) salt on heating. Compound (A) could be (a) an aldehyde (b) a primary alcohol (c) a ketone (d) a secondary alcohol
Last Answer : an aldehyde
Description : Ethylene glycol reacts with excess of PCl5 to give (a) Chloroethane (b) 1,2-Dichloroethane (c) Hexachloroethane (d) 1,3-Dichloroethane
Last Answer : 1,2-Dichloroethane
Description : Which of the following reaction mixtures will give an organic product which is ionic? (a) CH3CH2OH + PCl5 (b) CH3CH2OH + KBr + H2SO4 (c) CH3CH2OH + Na (d) CH3CH2OH + SOCl2
Last Answer : CH3CH2OH + Na
Description : Which of the following reagents cannot be used to prepare an alkyl chloride from an alcohol? (a) HCl + ZnCl2 (b) SOCl2 (c) NaCl (d) PCl5
Last Answer : NaCl
Description : Consider the following gaseous equilibrium: PCl3 + Cl2 = PCl5 + heat. Which of the following changes will shift it to the right: w) lower the temperature x) remove some Cl2 y) increase the volume z) add a catalyst
Last Answer : ANSWER: W -- LOWER THE TEMPERATURE
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 : What is the name of the compound with the formula PCl5 ?
Last Answer : Phosphorus pentachloride
Description : Phosphatic fertiliser is graded based on its __________ content. (A) P2O3 (B) PCl5 (C) P2O5 (D) H3PO4
Last Answer : (C) P2O5
Description : In the decomposition of PCl5 represented by, PCl5 ⇌ PCl3 + Cl2, decrease in the pressure of the system will __________ the degree of dissociation of PCl5. (A) Increase (B) Decrease (C) Not alter (D) None of these
Last Answer : (A) Increase
Description : Pick out the wrong statement pertaining to the decomposition of PCl5 represented by, PCl5 ⇌ PCl3 + Cl2.Degree of dissociation of PCl5 will (A) Decrease on addition of Cl2 (B) Increase on addition of ... at constant pressure (C) Decrease on increasing the pressure of the system (D) None of these
Last Answer : (D) None of thes
Description : Ammonia gas can be dried by (A) PCl5 (B) Quick lime (C) CaCl2 (D) Concentrated H2SO4
Last Answer : (B) Quick lime
Description : The substance used as a smoke screen in warfare is (A) C2H2 (B) SiCl4 (C) P2O5 (D) PCl5
Last Answer : Option B
Description : How the change in pressure at equilibrium position effect the following reaction? PCl5 PCl3 + Cl2
Last Answer : According to Le–chatlier’s principle, by increasing pressure the reaction will move toward less number of moles. In the above reaction, by increasing pressure the reaction will move in backward direction.
Description : What is the hybridization of carbon atoms in alkanes ?
Last Answer : Ans. Sp3
Description : What is the hybridization of carbon in carbon dioxide ?
Last Answer : Ans sp
Description : Find hybridization and shape i) XeF2 ii) XeO3 iii) XeF4
Last Answer : Ans: i) sp3d, Linear ii) sp3, Pyramidal iii) sp3d2 , Square planar
Description : The hybridization of nitrogen in an amine is (a) sp (b) sp3 (c) sp2 (d) sp4
Last Answer : sp3
Description : What is the hybridization of the carbon atom in CH3NH2? (a) 3sp3 (b) sp (c) sp2 (d) sp3
Description : What is the hybridization of the nitrogen atom in CH3NH2? (a) sp (b) sp2 (c) sp3 (d) s-sp3
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 : 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 is the hybridization of the oxygen atom in CH3CH2OH? (a) sp (b) 4sp3 (c) sp2 (d) sp3
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 : 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 : How many atoms are attached to an atom having a sp hybridization? (a) 0 (b) 1 (c) 2 (d) 3
Last Answer : 2
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 : Sp3d2 hybridization of central atom of a molecule would lead to............ geometry. a) square planar b) Tetrahedral c) Trigonal bipyramidal d) Octahedral
Last Answer : d) Octahedral
Description : 9. Which one of the following is a case of wrong matching ? (1) Callus - Unorganised mass of cells produced in tissue culture (2) Somatic hybridization - Fusion of two diverse cells (3) Vector DNA - Site for t-RNA synthesis (4) Micropropagation - In vitro production of plants in large number
Last Answer : Vector DNA - Site for t-RNA synthesis
Description : 13. Which one of the following pairs is isostructural (i.e. having the same shape and hybridization)? (1) 4 4 [BF and NH ] (2) 3 3 [BCl and BaCl ] (3) 3 3 [NH and NO ] (4) [NF3 and BF3 ] Sol: [1] In both the compounds, central atom i
Last Answer : (1) 4 4 [BF and NH ]
Description : Which of the following phrases is NOT appropriate for a description of benzene? w) characteristic reactivity of an alkene x) volatile liquid y) aromatic hydrocarbon z) resonance hybridization
Last Answer : ANSWER: W -- CHARACTERISTIC REACTIVITY OF AN ALKENE
Description : The nuclear particles which are assumed to hold the nucleons together are - (1) positrons (2) neutrons (3) electrons (4) mesons
Last Answer : (4) mesons Explanation: The nuclear particles which are assumed to hold the nucleons together are mesons.
Description : What is somatic hybridization in plants? -Biology
Last Answer : answer:
Description : What is the role of polyethylene glycol in somatic hybridization? -Biology
Description : What is interspecific hybridization? -Biology
Description : What are the main steps that are involved in the hybridization process? -Biology
Description : Difference between hybridization and inbreeding? -Biology
Description : What do you mean by hybridization ?
Last Answer : Hybridization is the process by which two or more different but closely related orbitals come together to form an equal number of new orbitals of the same strength.
Description : What is Metal Hybridization ?
Last Answer : Metal hybridization is the process of mixing two or more metals in a certain proportion to form a hybrid through the required heat and pressure in a particular furnace.
Last Answer : Hybridization of orbitals : The process of combining two or more different but closely related orbitals together to form an equal number of new orbitals of the same strength is called hybridization.
Description : The hybridization states of boron and nitrogen in borazole respectively
Last Answer : The hybridization states of boron and nitrogen in borazole respectively A. sp, sp B. sp, `sp^(2)` C. `sp^(2),sp^(2)` D. `sp^(2),sp^(3)`