Description : Which of the following compounds will dissolve in aqueous NaOH after undergoing reaction with Hinsberg reagent? (a) CH3CH2NH2 (b) (CH3CH2)2NH (c) (CH3CH2)3N (d) (CH3)3N
Last Answer : CH3CH2NH2
Description : Which of the following compounds show geometrical isomerism (a) (CH3)3N (b) CH3CH=CH2 (c) (CH3)2NH (d) CH3CH=CHCH
Last Answer : CH3CH=CHCH
Description : What type of intermolecular interactions does (CH3CH2)2NH undergo? (a) induced dipole-induced dipole (b) dipole-dipole (c) hydrogen bonding (d) all of these
Last Answer : all 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 : A salt solution of `Cd^(2+)` in dilute HCl, on treatment with a solution of `BaCl_(2)` gives a white precipitate, which is insoluble in concentrated `
Last Answer : A salt solution of `Cd^(2+)` in dilute HCl, on treatment with a solution of `BaCl_(2)` gives a white precipitate, ... C. `NO_(2)^(-)` D. `S^(2-)`
Description : A dilute solution of `H_(2)SO_(4)` is made by adding 5 mL of `3N H_(2)SO_(4)` to 245 mL of water. Find the normality and molarity of the diluted solut
Last Answer : A dilute solution of `H_(2)SO_(4)` is made by adding 5 mL of `3N H_(2)SO_(4)` ... of water. Find the normality and molarity of the diluted solution.
Description : Ethyl acetoacetate undergoes acid-hydrolysis with dilute HCl to form (a) Acetoacetic acid (b) Succinic acid (c) Acetic acid (d) Adipic acid
Last Answer : Acetoacetic acid
Description : What happen when mango is placed in dilute aqueous soln. of HCl?
Last Answer : Ans. When mango is placed in dilute aqueous soln. of HCl it swells.
Description : Baeyer's reagent is (a) dilute KMnO4 (b) HCl + ZnCl2 (c) Br2 in CCl4 (d) NH2NH2
Last Answer : dilute KMnO4
Description : CH3CONH2 is a weaker base than CH3CH2NH2 .
Last Answer : Due to resonance, the lone pair of electrons on the nitrogen atom in CH3CONH2 is delocalised over the keto gp. There is no such effect in CH3CH2NH2 . Due to reduction in electron density on N of CH3CONH2 , it is a weaker base than CH3CH2NH2 .
Description : Which compound has the highest boiling point? 1. CH3CH2CH3 2. CH3CH2OH 3. CH3CH2NH2 (a) 1 (b) 2 (c) 3 (d) 2 and 3 have similar boiling points
Last Answer : 2
Description : Diethyl ether reacts with excess of hot concentrated HI to form (a) CH3CH2I + CH3CH2OH (b) Only CH3CH2OH (c) CH3CH2OH + CH2=CH2 (d) Only CH3CH2
Last Answer : Only CH3CH2
Description : Which of the following is not normally considered to be a nucleophile? (a) NH3 (b) CH3NH2 (c) HC≡C:– (d) CH3CH2+
Last Answer : CH3CH2+
Description : Compound A(`C_7H_8O`)is insoluble in water, dilute HCl & aqueous `NaHCO_3`, it dissolves in dilute NaOH.When A is treatedwith `Br_2` water it is conve
Last Answer : Compound A(`C_7H_8O`)is insoluble in water, dilute HCl & aqueous `NaHCO_3`, it dissolves in dilute NaOH.When A ... . The structure ofA is A. B. C. D.
Description : Ion which is not present in dilute HCl.
Last Answer : Ion which is not present in dilute HCl. A. `H^(+)` B. `H_(3)O^(+)` C. `Cl^(-)` D. `HCl`
Description : Compound `A,C_(7)H_(8)O`, is insoluble in water, dilute `HCl`, and aquenous `NaHCO_(3)`, it dissolves in dilute `NaOH`. When `A` is treated with bromi
Last Answer : Compound `A,C_(7)H_(8)O`, is insoluble in water, dilute `HCl`, and aquenous `NaHCO_(3)`, it ... . o-cresol B. m-cresol C. p-cresol D. anisole
Description : An unknown substance (P) functions as weak base in water. It produces silver mirror test. It reacts with dilute `HCl` to produce (Q) which turns blue
Last Answer : An unknown substance (P) functions as weak base in water. It produces silver mirror test. It reacts with dilute `HCl` ... ` C. `NH_(2)OH` D. `HPO_(3)`
Description : Componds `(A)` and `B` are treated with dilute `HCl` separately. The gases liberated are `Y` and `Z` respectively. `Y` turns acidified `K_2 Cr_2 O_7`
Last Answer : Componds `(A)` and `B` are treated with dilute `HCl` separately. The gases liberated are `Y` and `Z` ... )SO_(4)` D. `NaC1 and Na_(2)CO_(3)`
Description : A crystalline solid X reacts with dilute HCl to liberate a gas Y. The gas Y decolourises acidified `KMnO_(4)`. When a gas Z is slowly passed into aque
Last Answer : A crystalline solid X reacts with dilute HCl to liberate a gas Y. The gas Y decolourises acidified `KMnO_(4)`. When ... 2)S` D. `Na_(2)SO_(4),SO_(2)`
Description : The metal that does not give H2 on treatment with dilute HCl is (a) Zn (b) Fe (c) Ag (d) Ca
Last Answer : Ans:(c)
Description : he metal does not give H2 on treatment with dilute HCL is?
Last Answer : :Ag
Description : Glass lined vessels are not used for handling/storing (A) Dilute H2SO4 (B) Dilute HNO3 (C) Dilute HCl (D) Hydrofluoric acid
Last Answer : (D) Hydrofluoric acid
Description : Lead pipes are not safe for carrying drinking water, because water, containing dissolved oxygen attacks lead thereby forming poisonous Pb(OH)2 . Lead pipes are readily corroded by (A) Dilute HCl (B) Acetic acid (C) Concentrated H2SO4 (D) None of these
Last Answer : (B) Acetic acid
Description : Ammonia present in the coke oven gas is removed by washing with (A) Caustic solution (B) Dilute ammoniacal liquor (C) Dilute HCl (D) Ethanolamine
Last Answer : (B) Dilute ammoniacal liquor
Description : When black copper oxide placed in a beaker is treated with dilute HCl, its colour changes to......... a) Whiteb) Red c) Blue-green d) No change
Last Answer : c) Blue-green
Description : Flushing liquor used for cooling coke oven gas constitutes of (A) Ammoniacal liquor (B) K2CO3 solution (C) Dilute H2SO4 (D) Dilute HCl
Last Answer : (A) Ammoniacal liquor
Description : Phosphoric acid is produced in wet process from phosphate rock and (A) Dilute H2SO4 (B) Concentrated H2SO4 (C) Concentrated NHO3 (D) Concentrated HCl
Last Answer : (A) Dilute H2SO4
Description : Which one of the following compounds will (a) decolorizes dilute cold KMnO4 ; (b) decolorizes bromine water ; and (c) gives a white precipitate with ammoniacal AgNO3 solution. (a) 1-Hexene (b) 1-Hexyne (c) 2-Hexene (d) 2-Hexyne
Last Answer : 1-Hexyne
Description : Benzoic acid and diphenyl ketone are both solids insoluble in water. A mixture of these compounds can be separated if we (a) add the mixture to a solution of NaOH in water, and filter. (b) add ... benzene. (d) It is impossible to separate a mixture of two solids when both are insoluble in water.
Last Answer : add the mixture to a solution of NaOH in water, and filter
Description : Which of the following compounds is least acidic? (a) HCl (b) Phenol (c) Acetylene (d) Picric acid
Last Answer : Acetylene
Description : Which of the following pairs of compounds could NOT be used to create a buffer solution? Would it be: w) HCL and NaCl (read: H - C - L and N - A - C - L) x) HCN and NaCN (read: H - C - N and N - A - C - N) y) NH3 ... - H - 4 - C - L) z) HNO2 and NaNO2 (read: H - N - O -2 and N - A - N - O - 2)
Last Answer : ANSWER: W -- HCL AND NaCl (read: H - C - L and N - A - C - L)
Description : Hello, please there is no well-founded chemist who would know what would be created by mixing these substances, in approximately the given ratio: toluene 70%, ethanol 20%, gasoline 9.5% and potassium salt of ... its properties. Please advise how to dissolve it - and release it ... Thanks, Alfi.
Last Answer : go to the store, buy it all and try it .. then write how you ended up
Description : A metal salt solution gives a yellow precipitate with silver nitrate. The precipitate dissolves in dilute nitric acid as well as in ammonium hydroxide
Last Answer : A metal salt solution gives a yellow precipitate with silver nitrate. The precipitate dissolves in dilute nitric acid as ... (3-)` D. `SO_(4)^(2-)`
Description : Amongst the compounds gives, the one that would form a brilliant colored dye on treatment with `NaNO_2` in dil. `HCl` followed by addition to an alkal
Last Answer : Amongst the compounds gives, the one that would form a brilliant colored dye on treatment with `NaNO_2` in dil. ... of `beta-`naphthol is A. B. C. D.
Description : Which of the following compounds can form alcohol with `NaNO_(2)//HCl`?
Last Answer : Which of the following compounds can form alcohol with `NaNO_(2)//HCl`? A. B. C. `CH_(3)-CH_(2)-NH_(2)` D. All of these
Description : How many of the following compounds are possible products when chlorine is passed through hypo solution (i) S (ii) HCl (iii) `Na_(2)S` (iv) `Na_(2)SO_
Last Answer : How many of the following compounds are possible products when chlorine is passed through hypo solution (i) S (ii) ... )S_(4)O_(6)` (vi) `HClO_(4)`
Description : Why is concentrated HCl used to dissovle the given metal salt in the flame test ?
Last Answer : Why is concentrated HCl used to dissovle the given metal salt in the flame test ? A. strong acids produce ... the flame in presence of `Cl^(-)` ions.
Description : Is HCl a salt base or acid?
Last Answer : HCl is the chemical formula of hydrochloric acid.
Description : The formula of common salt is (A) CaOH (B) KOH (C) NaCl (D) HCl
Last Answer : (C) NaCl
Description : If A -3n plus 2 and B 5n - 7 what is the value of A - B in simplest form?
Last Answer : A - B = -3n + 2 - (5n - 7) = -3n + 2 - 5n + 7 = 9 - 8n
Description : Write the molecular formulae for the following compounds and name the elements present. (a) Baking soda (b) Common salt (c) Sulphuric acid (d) Nitric acid
Last Answer : (a) Baking soda - NaHCO3 Elements present in Baking soda are sodium, hydrogen, oxygen and carbon. (b) Common salt - NaCl Element present are: Sodium and chlorine. (c) Sulphuric acid - H2SO4 ... , sulphur and oxygen. (d) Nitric acid - HNO3 Elements present are: Hydrogen, nitrogen and oxygen.
Description : simplify (3n – 2m)2 = ? -General Knowledge
Last Answer : (3n - 2m)^2 = 9n^2 - 12mn + 4m^2
Description : Out of 3n consecutive natural numbers 3 natural numbers are chosen at random without replacement. -Maths 9th
Last Answer : (c) \(rac{3n^2-3n+2}{(3n-1)(3n-2)}\)In 3n consecutive natural numbers, (i) n numbers are of the form 3p (ii) n numbers are of the form 3p + 1 (iii) n numbers are of the form 3p + 2 For the ... ) We can select one number from each set.∴ Favourable number of cases = nC3 + nC3 + nC3 + (nC1 nC1 nC1)
Description : Two forces, one with a magnitude of 3N and the other with a magnitude of 5N ,are applied to an object. For which orientations of the forces shown in t
Last Answer : Two forces, one with a magnitude of 3N and the other with a magnitude of 5N ,are applied to an object. For ... of the object the least ? A. B. C. D.
Description : If `X""=""{4^n-3n-1"":""n in N}""a n d""Y""=""{9(n-1)"": n in N}` , where N is the set of natural numbers, then `XuuY` is equal to (1) N (2) Y - X (3)
Last Answer : If `X""=""{4^n-3n-1"":""n in N}""a n d""Y""=""{9(n-1)"": n in N}` , where N is the set of natural numbers ... 3) X (4) Y A. `X` B. `Y` C. `N` D. `Y-X`
Description : If `A=(x : x=4n+1,nle5,n in N}` and `B={3n : n le 8, n in N}`, then find `(A-(A-B))`.
Last Answer : If `A=(x : x=4n+1,nle5,n in N}` and `B={3n : n le 8, n in N}`, then find `(A-(A-B))`.
Description : If 5M=3N, then M:N is____
Last Answer : If 5M=3N, then M:N is____
Description : Prove using mathematical induction that for all n≥1. 1+4+7+....+(3n-2)=n(3n-1)÷2
Last Answer : Prove using mathematical induction that for all n≥1. 1+4+7+....+(3n-2)=n(3n-1)÷2