Q.1.
Which is the suitable catalyst for bringing out the transformation given below?
- a) BF3. Et20
- b) NaOEt
- c) tungsten lamp
- d) dibenzoyl peroxide
Q.2.
Which of the will give effective reduction of 3-hexyne to trans-3-hexene?
- a) H2/Lindlar’s catalyst
- b) Na/liq. NH3
- c) Fe/NaCl
- d) DIBAL
Q.3.
Which of the reagent will give effective transformation of given compounds?
- a) CH2N2
- b) CH3Li
- c) (CH3)2CuLi
- d) Ph3P = CH2
Q.4.
Which is the mildest reducing agent which reduces only carbonyl group in presence of nitro, carboxyl, double bond and ester groups?
- a) LiAIH4
- b) Na-NH3
- c) NaBH4
- d) H2-Ni
Q.5.
What will be the product for the given reactant and reagents?
- a)
- b)
- c)
- d)
Q.6.
Which is the correct combination of reagent which can carry out following conversion?
- a) (i) CH3 – MgBr then H+ (ii) H2S04 / ∆ (iii) NH2 – NH2 / KOH
- b) (i) (CH3)2 CuLi then H+ (ii) NaBH4 EtOH (iii) H2S04 / ∆
- c) (i) CH3 – Li, then H+ (ii) PCC / ∆
- d) (i) NaBH4 ∙ CeCl3 then H+ (ii) MnO2 (iii) CH3 – Li
Q.7.
How acetophenone can be converted to phenol by reaction?
- a) m-CPBA followed by base catalysed hydrolysis
- b) conc. HN03
- c) iodine and NaOH
- d) Singlet oxygen followed by base catalysed hydrolysis product
Q.8.
How can we prepare RR’ R” OH by the action of excess of a suitable Grignard reagent on which of the following reactants?
- a) nitrile or an aldehyde
- b) ester or an alcohol
- c) aldehyde or a ketone
- d) ketone or an ester
Q.9.
What is used to carry out the following conversion?
- a) hydroboration oxidation followed by Jones oxidation
- b) Wacker oxidation followed by haloform reaction
- c) oxymercuration-determination followed by Jones oxidation
- d) ozonolysis followed by haloform reaction
Q.10.
How many isomers of C4Hwhen reacts with CH3MgBr followed by acidification to alcohol (only consider carbonyl isomers and Including stereoisomers)?
- a) 2
- b) 3
- c) 4
- d) 5