Carboxylic acids and Their derivatives 1359
1. Which of the following is the weakest acid[CPMT 2001]
(a) (b)
COOHCH3
(c)
HCOOH
(d)
2. Pyruvic acid is obtained by [AFMC 1995]
(a) Oxidation of acetaldehyde cyanohydrin
(b) Oxidation of acetone cyanohydrin
(c) Oxidation of formaldehyde cyanohydrin
(d) None of these
3. The product obtained by dry distillation of calcium
formate on reacting with ammonia yields
(a) Formamide (b) Acetamide
(c) Acetaldehyde ammonia (d) Urotropine
4. In the reaction
3
468 NH
XOHC
The compound X is [Roorkee Qualifying 1998]
(a) Phthalic anhydride (b) Phthalic acid
(c) o-xylene (d) Benzoic acid
5. Ethyl acetate reacts with
MgBrCH 3
to form
[MP PET 1999]
(a) Secondary alcohol (b) Tertiary alcohol
(c) Primary alcohol and acid (d) Acid
6. In quick vinegar process of acetic acid, the
temperature of mixture is [RPMT 2003]
(a) 300 K (b) 427 K
(c) 500 K (d) 350 K
7. Formic acid can reduce [CPMT 1987]
(a) Tollen's reagent (b) Mercuric chloride
(c)
4
KMnO
(d) All of these
8. 0.2 gm of fine animal charcoal is mixed with half
litre of acetic acid
)( SM
solution and shaken for
30 minutes
[BHU 1998]
(a) The concentration of the solution decreases
(b) Concentration increases
(c) Concentration remains same
(d) None of these
9. Dimerisation in carboxylic acid is due to[KCET 2002]
(a) Ionic bond
(b) Covalent bond
(c) Coordinate bond
(d) Intermolcular hydrogen bond
10. A colourless organic compound gives brisk
effervescences with a mixture of sodium nitrite
and dil. HCl. It could be
[CPMT 1978]
(a) Glucose (b) Oxalic acid
(c) Urea (d) Benzoic acid
11. What is formed when benzoyl chloride reacts with
aniline in presence of sodium hydroxide[BHU 1996]
(a) Acetanilide (b) Benzanilide
(c) Benzoic acid (d) Azobenzene
12. Strong acid among the following is
[CBSE PMT 1992; AFMC 1998; B HU 2000]
(a)
COOHCF3
(b)
COOHCBr3
(c)
COOHCH 3
(d)
COOHCCl 3
13. Aspirin is obtained by the reaction of salicylic
acid with
[AFMC 1998]
(a) Acetone (b) Acetaldehyde
(c) Acetyl chloride (d) Acetic anhydride
14. Oxalic acid when reduced with zinc and
42SOH
gives
[Tamil Nadu CET 2001]
(a) Glyoxallic acid (b) Glyoxal
(c) Glycollic acid (d) Glycol
15. A distinctive and characteristic functional group
in fats is
[NCERT 1981; MP PET 1995]
(a) A ketonic group
(b) An ester group
(c) A peptide group
(d) An alcoholic group
OH
COOH
