PG TRB free online chemistry test

MARAN ACADEMY

PG TRB CHEMISTRY

  

 

1. The high reactivity of Cyclobutadiene is due to
   1.   Aromatic
   2.   Steric Strain
   3.   Anti aromatic
   4.   Smaller Ring size
2. Pyrrole is a ------ base then pyridine
   1.   Stronger
   2.   Slightly Stronger
   3.   Weaker
   4.   Slightly weaker
3. What is called as Partial bond fixation
   1.   Non equivalency of bonds
   2.   Non bond resonance
   3.   Position of bonds in the Canonical Structure
   4.   Phenomenon of resonance
4. Azulene is a Aromatic according to
   1.   Hammond Postulate
   2.   Sequence Rule
   3.   Hukcle’s Rule
   4.   Craig’s
5. Which of following Anti Aromatic is
   1.   [18] annulene
   2.   [14] annulene
   3.   [12] annulene
   4.   [10] annulene
6. .
   Which one of the following not exhibit Aromatic Character
   
   1.   Trophiliunm ion
   2.   Furan
   3.   Anthracene
   4.   Cyclooctatetrene
7. .
   In Aromatic compound the energy of the open chain ----- the ring
   
   1.   Greater than
   2.   Lesser than
   3.   Equal to
   4.   Cannot be related
8. When a compound has the ability to sustain an induced ring current is said to be
   1.   Aromatic
   2.   Non Aromatic
   3.   Anti Aromatic
   4.   Aliphatic
9. Adamantane is named as
   1.   Tricyclo [3.3.1]decane
   2.   Tricyclo [3.3.1.1]decane
   3.   Tricyclo [3.3.1.1]decane
   4.   Tricyclo [3.3.1] nonane
10. Cyclobutadiene is
    1.   Aromatic
    2.   Non Aromatic
    3.   Anti Aromatic
    4.   Aliphatic
11. Which of following reagents is used in Oppenauer Oxidation?
    1.   Aluminum isoproxide
    2.   NaBH4
    3.   SeO2
    4.   Raney-Ni
12. CH3COCH2COOCH3 → CH3CHOHCH2CH2OH
    1.   Baker’s Yeast
    2.   SeO2
    3.   OSO4
    4.   Lithium Aluminium Hydride
13. Location of double bond is effecting with
    1.   Hydrolysis
    2.   Reduction
    3.   Ozonolysis
    4.   Oxidation
14. Ethylmethyl Ketone is converted into diacetyl by using reagent
    1.   CrO3
    2.   NH2-NH2/OH-
    3.   SeO2
    4.   H2O2
15. .
    A solution of CrO3 in Aqueous Sulphuric acid is called
    
    1.   Collin’s Reagent
    2.   Gilman’s Reagent
    3.   Baker’s Reagent
    4.   Jones Reagent
16. A reagents used forces-hydroxylation of double bond is
    1.   SeO2
    2.   Lead tetraacetate
    3.   NBS
    4.   OSO4
17. .
    Which of following reagents is suitable for stereospecific reduction of β-ketoester and β-diketoens?
    1.   NaBH4
    2.   DCC
    3.   Baker’s yeast
    4.   SeO2
18. A mixture of CrO3 and pyridine is known as
    1.   Collin’s Reagent
    2.   Gilman’s Reagent
    3.   Baker’s Reagent
    4.   Jones Reagent
19. The reagent used in Rosenmund reduction is
    1.   Pd coated with BaSO4
    2.   Pd
    3.   Ni coated with BaSO4
    4.   none of the above
20. Primary amides get converted into primary amines by:
    1.   Addition
    2.   Oxidation
    3.   Reduction
    4.   Acylation