Description : Thiols are alcohol analogs in which the oxygen has been replaced by sulfur (e.g., CH3SH). Given the fact that the S-H bond is less polar than the O-H bond, which of the following ... (c) Hydrogen bonding forces would be the same. (d) No comparison can be made without additional information
Last Answer : Hydrogen bonding forces are weaker in thiols.
Description : Assertion : o-Hydrozybenaldehyde is less soluable in water than p-Hydroxybenzalbenzaldehye. Reason : Intra molecular hydrogen bonding in o-Hydrozbenza
Last Answer : Assertion : o-Hydrozybenaldehyde is less soluable in water than p-Hydroxybenzalbenzaldehye. Reason : Intra ... D. Assertion is false, Reason is true
Description : Intramolecular hydrogen bonding is not present in :-
Last Answer : Intramolecular hydrogen bonding is not present in :- A. p-fluoro phenol B. Chloral hydrate C. o-nitro phenol D. o-fluoro phenol
Description : During discharge of a lead-acid storage battery, which of the following actions occurs? A. The acid becomes stronger. B. Both plates change chemically to ammonium chloride. C. The acid becomes weaker. D. Hydrogen gas is liberated.
Last Answer : Answer: C
Description : Which of the following statements is true : (a) o-Nitrobenzoic acid is more acidic than p-nitrophenol (b) o-Nitrobenzoic acid is less acidic than p-nitrophenol (c) o-Nitrobenzoic acid and p-nitrobenzoic acid have the same acid strength (d) None of these statements is true
Last Answer : o-Nitrobenzoic acid is more acidic than p-nitrophenol
Description : Assertion:Among chalcogens, catenation tendency is maximum for sulphur Reason: S-S bond is stronger than O - O single bond.
Last Answer : Assertion:Among chalcogens, catenation tendency is maximum for sulphur Reason: S-S bond is stronger ... is not correct and Statement-II is correct
Description : How will you separate a mixture of o-nitrophenol and p- nitrophenol ?
Last Answer : o-nitrophenol is steam volatile therefore it can be separated by Steam distillation.
Description : Which of the following compounds is most acidic? (a) o-Cresol (b) p-Nitrophenol (c) p-Cresol (d) p-Chlorophenol
Last Answer : p-Nitrophenol
Description : P and Q are isomer of dicraboxylic acid `C_(4)H_(4)O_(4)` Both decolourixe `Br_(2)//H_(2)O`. On heating , P forms the cyclic anhydride. Upon treatment
Last Answer : P and Q are isomer of dicraboxylic acid `C_(4)H_(4)O_(4)` Both decolourixe `Br_(2)//H_(2)O`. On ... sequences V and W are respectively A. B. C. D.
Description : Phenol is (a) stronger acid than acetic acid (b) weaker acid than acetic acid (c) stronger base than methylamine (d) weaker base than methylamine
Last Answer : weaker acid than acetic acid
Description : Which of the following statements is false about the acid-strength of acetic acid? (a) Acetic acid is a stronger acid than monochloroacetic acid. (b) Acetic acid is a stronger acid than propionic acid. ... is a weaker acid than trichloroacetic acid. (d) Acetic acid is a weaker acid than formic acid
Last Answer : Acetic acid is a stronger acid than monochloroacetic acid
Description : In protolytic reactions in which the reactants are much stronger as an acid and a base than the products, the proton transfer reaction: w) does not occur x) approaches completeness y) produces a much stronger acid and a much weaker base z) produces a much weaker acid and a much stronger base
Last Answer : ANSWER: X -- APPROACHES COMPLETENESS
Description : The covalent bonding of atoms forms a/an a. Molecule. b. Ion. c. Element. d. Isomer.
Last Answer : a. Molecule.
Description : .Which of the following statements is correct about an aqueous solution of an acid and of a base? (i) Higher the pH, stronger the acid (ii) Higher the pH, weaker the acid (iii) Lower the pH, stronger the base (iv) Lower the pH, ... (i) and (iii) (b) (ii) and (iii (c) (i) and (iv) (d) (ii) and (iv)
Last Answer : (d) (ii) and (iv)
Description : The stronger the acid __________. (a) the less stable its conjugate base (b) the larger the pKa (c) the weaker its conjugate base (d) the larger the pH
Last Answer : the weaker its conjugate base
Description : Which of the following statements is correct? (a) The stronger the acid, the weaker its conjugate base. (b) The stronger the acid, the stronger its conjugate base. (c) The stronger the base, the stronger its conjugate base. (d) The stronger the acid, the weaker its conjugate acid.
Last Answer : The stronger the acid, the weaker its conjugate base
Description : Which acid is weaker than benzoic acid? (a) p-Methylbenzoic acid (b) p-Chlorobenzoic acid (c) p-Nitrobenzoic acid (d) o-Chlorobenzoic acid
Last Answer : p-Methylbenzoic acid
Description : When benzene sulphonic acid and P-nitrophenol are treated with `NaHCO_3`, the gases released, respectively, are :
Last Answer : When benzene sulphonic acid and P-nitrophenol are treated with `NaHCO_3`, the gases released, respectively, are : A. ` ... CO_(2)` D. `CO_(2), CO_(2)`
Description : Assertion (A): Alkyl aryl ethers on reaction with HI give alkyl iodide phenols Reason (R): Aryl - oxygen bond is weaker than alkyl oxygen bond
Last Answer : Assertion (A): Alkyl aryl ethers on reaction with HI give alkyl iodide phenols Reason (R): Aryl - oxygen ... is false D. A is false but R is true
Description : What's stronger than a boulder, but weaker than a flying insect? -Riddles
Last Answer : Gravity
Description : Pick up the correct statement from the following: (A) Illite bond is weaker than Kaolinite bond (B) Illite bond is stronger than montmorillonite bond (C) Illite does not swell when wet (D) All the above
Last Answer : Answer: Option D
Description : For same weight, same material, same length a. Solid shaft is always stronger than a hollow shaft b. Solid shaft is always weaker than a hollow shaft and strength ratio will depend upon Do/Di of ... of a solid shaft is always weaker and the strength ratio will depend upon Do/Di of hollow shaft
Last Answer : b. Solid shaft is always weaker than a hollow shaft and strength ratio will depend upon Do/Di of hollow shaft
Description : Do polar compounds have stronger or weaker attractions between molecules?
Last Answer : Polar compounds have stronger attractions between molecules.
Description : Unraveling an electromagnetic givesA. stronger field B. weaker field C. moderate field D. wider field
Last Answer : weaker field
Description : . Lap joints are preferred over butt joints in soldering/brazing, because these joints are (A) Weaker in tension but stronger in shear (B) Weaker in shear but stronger in tension (C) Stronger in both shear and tension (D) The lap joints are easily made
Last Answer : r: Option D
Description : Higher pitch of the roof (i) Results in stronger roof (ii) Results in weaker roof (iii) Requires more covering material (iv) Requires less covering material The correct answer is (A) (i) and (iii) (B) (i) and (iv) (C) (ii) and (iii) (D) (ii) and (iv)
Last Answer : Option A
Description : The greater the pressure gradient the: a. Closer the isobars and the lower the temperatures b. Further the isobars will be apart and the higher the temperature c. Closer the isobars and the stronger the wind d. Further the isobars will be apart and the weaker the wind
Last Answer : c. Closer the isobars and the stronger the wind
Description : The less mercury remaining in condensed amalgam: A. The stronger the restoration which contains fewer matrix alloys and fewer voids B. The weaker the restoration C. The more matrix alloys D. The more voids E. None of the above
Last Answer : A. The stronger the restoration which contains fewer matrix alloys and fewer voids
Description : Assertion (A): o-phenol sulphonic acid on heating at `100^(@)C` changes to p-phenol sulphonic acid. Reason : Sulphonation of phenol is a reversible pr
Last Answer : Assertion (A): o-phenol sulphonic acid on heating at `100^(@)C` changes to p-phenol sulphonic acid. ... in correct D. A is incorrect but R is correct
Description : Which one of the following can be oxidized to the corresponding carbonyl compound - (1) O-Nitrophenol (2) Phenol (3) 2-methyl-2-hydroxy propane (4) 2-hydroxy propane
Last Answer : (4) 2-hydroxy propane
Description : Acetamide is a much weaker base than ammonia. This is because (a) the electron withdrawing effect of the C=O group makes the lone pair of electrons on nitrogen atom less available for protonation. (b) ) ... NH2 group. (d) an H atom from the nitrogen is less easily lost from CH3CONH2 than from NH3.
Last Answer : the electron withdrawing effect of the C=O group makes the lone pair of electrons on nitrogen atom less available for protonation
Description : In the following compounds phenol (I), p-cresol (II), m-nitrophenol (III) and p-nitrophenol (IV), the order of acidity is:
Last Answer : In the following compounds phenol (I), p-cresol (II), m-nitrophenol (III) and p- ... `IgtIVgtIIIgtII` C. `IIgtIgtIIIgtIV` D. `IVgtIIIgtIgtII`
Description : Assertion `:-` Conditional reabsorption of `Na^(o+)` and water takes place in DCT. Reason `:-` DCT is also capacble of selective secretion of hydrogen
Last Answer : Assertion `:-` Conditional reabsorption of `Na^(o+)` and water takes place in DCT. Reason `:-` ... False. D. If both Assertion & Reason are false.
Description : Assertion :- Oxidation state of Hydrogen is `+1` in `H_(2)O` while `-1` in `CaH_(2)`. Reason :- `CaH_(2)` is a metal hydride and for metal hydrides, h
Last Answer : Assertion :- Oxidation state of Hydrogen is `+1` in `H_(2)O` while `-1` in `CaH_(2)`. ... Reason is False. D. If both Assertion & Reason are False.
Description : Assertion (A): Diethyl ether reacts with hot Conc `H_(2)SO_(4)` and gives ethyl hydrogen sulphate Reason (R): The reaction involves cleavage of C-O bo
Last Answer : Assertion (A): Diethyl ether reacts with hot Conc `H_(2)SO_(4)` and gives ethyl hydrogen sulphate Reason (R ... R is false D. A is false but R is true
Description : Assertion : Tibia is stronger and inner whereas fibula is the slander and outer bone of lower leg or shank. Reason : Tibia has a sharp crest in the sh
Last Answer : Assertion : Tibia is stronger and inner whereas fibula is the slander and outer bone of lower leg or ... . D. If both Assertion and Reason are false.
Description : Caution must be exercised during the charging of lead-acid storage batteries as _____________. A. the acid will become weaker B. hydrogen gas is being continuously liberated C. both plates are changing chemically to lead sulfate D. lead peroxide in the negative plate is poisonous
Last Answer : Answer: B
Description : The ionisation isomer of `[Cr(H_(2)O)_(4) Cl (NO_(2))]Cl`
Last Answer : The ionisation isomer of `[Cr(H_(2)O)_(4) Cl (NO_(2))]Cl` A. `[Cr(H_(2)O)_(4)(O_(2)N)]Cl_(2)` B. `[Cr( ... D. `[Cr(H_(2)O)_(4)Cl_(2)(NO_(2))].H_(2)O`
Description : Statement-I : Conc. `H_(2)SO_(4)` is low volatillity and viscos nature acid Statement-II : It is due to Hydrogen bonding
Last Answer : Statement-I : Conc. `H_(2)SO_(4)` is low volatillity and viscos nature acid Statement-II : ... Statement-I is not correct and Statement-II is correct
Description : Using H2O, how can I explain the difference between intramolecular and intermolecular forces?
Last Answer : H2O is a polar covalent molecule. Polar covalent molecules occur when heterogeneous molecules occur between atoms of different electro-negativity (E.N.), which is a measure of how strongly an atom attracts a ... molecule and the δ- dipole (in this case O) of an adjacent molecule. Hope that helps.
Description : In the scheme given below, the total number of intramolecular aldol condensation products formed from (Y) is
Last Answer : In the scheme given below, the total number of intramolecular aldol condensation products formed from (Y) is
Description : The mutarotation of glucose is characterized by : (a) a change from an aldehyde to ketone structure. (b) a change of specific rotation from a (+) to a (–) value. (c) the presence of an intramolecular bridge structure. (d) the irreversible change from α-D to the β-D form.
Last Answer : the presence of an intramolecular bridge structure.
Description : What makes acetic acid a stronger acid than phenol ?
Last Answer : Ans. Greater resonance stabilization of acetate ion over phenoxide ion.
Description : The most suitable method of separation of a mixture of ortho and para nitrophenol in the ratio `1:1` is :
Last Answer : The most suitable method of separation of a mixture of ortho and para nitrophenol in the ... B. Distillation C. Sublimation D. Chromatography
Description : Which of the following compounds is most acidic? (a) Phenol (b) m-Nitrophenol (c) m-Cresol (d) m-Bromophenol
Last Answer : m-Nitrophenol
Description : Assertion `(A) :` Hydrogen bomb is more powerful than atomic bomb. Reason `(R) :` In hydrogen bomb, fusion reaction is initiated. a)If both `(A)` and
Last Answer : Assertion `(A) :` Hydrogen bomb is more powerful than atomic bomb. Reason `(R) :` In hydrogen bomb, fusion ... D. If both (A) and (R ) are incorrect.
Description : Assertion : Phenol has lower boiling point then water Reason : Water forms more number of hydrogen bonds
Last Answer : Assertion : Phenol has lower boiling point then water Reason : Water forms more number of hydrogen ... false D. Assertion is false, Reason is true
Description : Maximum hydrogen bonding would be observed in which compound? -Do You Know?
Last Answer : answer: