If the for a given reaction has a negative value then which of the following gives the correct relationships for the values of G° and Keq?
< 0; Keq > 1
<0; Keq < 1
> 0; Keq < 1
> 0; Keq > 1
Which of the following is an example for heterogeneous catalysis reaction?
2SO2(g) + O2 2SO3(g)
Hydrolysis of aqueous sucrose solution in the presence of a aqueous mineral acid
2H2O2 (l) 2H2O2(l) + O2(g)
Hydrolysis of liquid in the presence of aqueous mineral acid
The relative reactivities of acyl compounds towards nucleophilic substitution are in the order of
acyl chloride > acid anhydride > ester > amide
ester > acyl chloride > amide > acid anhydride
acid anhydride > amide > ester > acyl chloride
acyl chloride> ester> acid anhydride > amide
Clemmensen reduction of a ketone is carried out in the presence of which of the following?
Zn-Hg with HCl
LiAlH4
H2 and Pt as catalyst
Glycol with KOH
Which one of the following is employed as antihistamine?
Diphenyl hydramine
Norethindrone
Omeprazole
Chloramphenicol
In DNA, the complimentary bases are
adenine and thymine; guanine and cy1osine
adenine and thymine; guanine and uracil
adenine and guanine, thymine and cytosine
uracil and adenine; cytosine and guanine
Which of the following is not a resonating form of benzaldehyde?
B.
The structure in which, more electronegative atom carries positive charge and electropositive atom carries negative charge highly unstable or in other words such structure is not possible.
Resonance of benzaldehyde is:
Which one of the following does not undergo iodoform reaction?
Secondary butyl alcohol
Iso-propyl alcohol
Diethyl ketone
Ethyl alcohol
Which of the following compounds gives carbylamine test?
N-methyl-o-methyl aniline
N, N-dimethyl aniline
2, 4-diethyl aniline
p-methyl-N-methyl benzylamine