Addition of HOX
Trending Questions
Q. An organic compund ′A′ on treatment with NH3 gives ′B′ which on heating gives ′C′, ′C′ when treated with Br2 in the presence of KOH produces ethylamine. Compound ′A′ is :
- CH3 CH2 COOH
- CH3COOH
- CH3 CH2 CH2 COOH
Q. To prepare 3-ethylpentan-3-ol, the reactants needed are
- CH3CH2MgBr+CH3COCH2CH3
- CH3MgBr+CH3CH2CH2COCH2CH3
- CH3CH2MgBr+CH3CH2COCH2CH3
- CH3CH2CH2MgBr+CH3COCH2CH3
Q. Acetylene reacts with excess of hypochlorous acid to produce
- Acetylene tetrachloride
- Acetylene chlorohydrin
- Acetaldehyde
- Dichloroacetaldehyde
Q. Maleic acid reacts with Br2/CCl4. The product formed is
- Meso-2, 3-dibromosuccinic acid
- (±) 2, 3-dibromosuccinic acid
- (+) 2, 3 dibromosuccinic acid
- (-) 2, 3-dibromosuccinic acid
Q. The predominant product formed, when 3-methyl-2-pentene reacts with HOCl, is
Q. Which of the following compounds does not give a silver mirror with Tollen's reagent?
- Aromatic aldehyde
- Propanone
- Methanal
- Both (a) and (c) above
Q. Tollen's reagent used for the distinction of aldehydes with ketones is
- aq.CuSO4
- [Ag(NH3)2]+
- Cu(Citrate)2−2
- None of the above
Q. Acetylene reacts with excess of hypochlorous acid to produce
- Acetylene tetrachloride
- Acetylene chlorohydrin
- Acetaldehyde
- Dichloroacetaldehyde
Q. Find the product of given reaction.
Q. The treatment of CH3MgX with CH3−C≡C−H produces:
- CH3−CH=CH2
- CH4
- CH3−C≡C−CH3
- CH3−CH=CH−CH3
Q. An important reaction of acetone is auto-condensation in presence of concentrated sulphuric acid to give the aromatic compound is:
- mesitylene
- mesityl oxide
- trioxane
- phorone
Q. Give one chemical test to distinguish between Aniline and N-methylaniline.
Q.
Nitrobenzenei. Br2/Fe−−−−−−→ii. H2/Pt(A)i. NaNO2/HCl, 0−5 ∘C−−−−−−−−−−−−−−→ii. Cu2Cl2/HCl(B)
The product (B) is:
Q. Write the reactions of (i) aliphatic and (ii) aromatic primary amines with nitrous acid:
Q. When acetaldehyde is treated with excess of acid then unsaturated product will be?
- Alcohol
- Aldehyde
- Acid
- Alkyl halide
Q. An organic compound contains C, H and O, and its aqueous solution is neutral. 1.44 g of A on refluxing with dilute H2SO4 produces two organic compounds B and C of which the only B is resolvable and gives effervescence with NaHCO3. Also, neutralization of entire B requires 0.4 g of NaOH. B on reduction with HI/red phosphorus produces a hydrocarbon D which is non-resolvable. Also D on monochlorination yield three alkyl halide in which the only one is resolvable. Deduce structures of A to D.
Q. How is methyl cyanide obtained from acetamide?
Q. Chloroethane reacts with X to give diethyl ether. The compound X is:
- NaOH
- NaOEt
- Na2S2O3
- H2SO4
Q. An organic compound 'A', C8H6 on reacting with dil H2SO4 and HgSO4 gives a compound 'B' which can also be obtained from reaction of benzene with acid chloride in the presence of anh. AlCl3. Compound 'B' when reacted with iodine and aq. NaOH yields 'C' and a yellow compound 'D' . Identify A to D with proper justification.
Q. One litre of a mixture of O2 and O3 at NTP was allowed to react with an excess of acidified solution of KI. The iodine liberated required 40ml of M/10 sodium thiosulphate solution for titration. What Is the weight percent of ozone in the mixture? Ultraviolet radiations of wavelength 300 nm can decompose ozone. Assuming that one photon can decompose one ozone molecule, how many photons would have been required for the complete decomposition of ozone in the original mixture ?
Q. "Concentrated HNO3 converts graphite into metallic acid C6(COOH)6."
Answer whether the above statement is true or false.
If true enter 1, else 0
Answer whether the above statement is true or false.
If true enter 1, else 0
Q. During the reaction of ethyl alcohol with ammonia to form ethylamine, which of the following represents the reaction conditions?
- Al2O3 at 350 oC
- Al2O3 at 35 oC
- AlCl3 at 350 oC
- AlCl3 at 35 oC
Q. What is the action of the following reagents on ethanol?
(a) Lucas reagent
(b) Phosphorus pentachloride
(c) Red phosphorus and bromine
(d) Acidified potassium dichromate.
(a) Lucas reagent
(b) Phosphorus pentachloride
(c) Red phosphorus and bromine
(d) Acidified potassium dichromate.
Q. Paraldehyde on distillation with H2SO4 gives:
- acetaldehyde
- phorone
- acetic Acid
- metaldehyde
Q. Among the following compounds which will react with acetone to give a product containing RR′C=N− is:
- C6H5NH−CH3
- (CH3)3N
- C6H5NHC6H5
- C6H5NH−NH2
Q. Alkyl cyanide is reduced with sodium metal in ethanol.
Q. Of the following statements :
(P)C6H5N=CH−C6H5 is a Schiff's base.
(Q)A dye is obtained by the reaction of aniline and C6H5N+≡NCl.
(R)C6H5CH2NH2 on treatment with [NaNO2+HCl] gives diazonium salt.
(S)p−Toluidine on treatment with [HNO2+HCl] gives diazonium salt.
(P)C6H5N=CH−C6H5 is a Schiff's base.
(Q)A dye is obtained by the reaction of aniline and C6H5N+≡NCl.
(R)C6H5CH2NH2 on treatment with [NaNO2+HCl] gives diazonium salt.
(S)p−Toluidine on treatment with [HNO2+HCl] gives diazonium salt.
- only (P)and(Q) are correct
- only (P)and(R) are correct
- only (R)and(S) are correct
- (P), (Q)and(S) are correct
Q. The predominant product formed, when 3-methyl-2-pentene reacts with HOCl, is
Q. (CH3)2C=OZn−Hg/ConHCl→X. Here X is :
- CH3−CH2−CH2OH
- CH3−CH(OH)−CH3
- CH3−CH2−CHO
- CH3−CH2−CH3
