M.Sc. (AGPM) (Semester Examination 2017
CHEMISTRY OF PESTICIDES AND THEIR FORMULATIONS-I
Day Date: Tuesday, 18-04-2017 Max. Marks: 70
Time: 10.30 AM to 01.00 PM
N.B. All Questions carry equal marks.
All sections are Compulsory.
Solve any two Questions from Section-II and III.
Figures to the right indicate full marks.
Section- I
Q.1 Select most correct alternative of the following each carry one
mark.
14
Sulphonation of benzene is an example of
Nucleaphilic substitution Electrophilic substitution
Nucleaphilic addition Electrophilic addition
Name the following reaction
C6H5CHO+(CH3CO)20
→ C6H5 CH=CH-COOH+CH3 COOH
1800C
Reformatsky reaction Mannich reaction
Perkins reaction Cannizzaro's reaction
Aromatic aldehydes when condensed in presence sodium or
potassium cyanide and ethanol gives α hydroxy ketone. This
reaction is known as.
Benzoin condensation Perkin's condensation
Aldol condensation Stobbe condensation
Which of the following alkyl halide under goes SN1 reaction?
Methyl bromide Isopropyl bromide
n-butyl bromide Tertiaryl butyl bromide
Which of the following is synthetic pyrathroid?
Cypermethrin Jasmolin Cyanrin Pyrethrin
Which of the is insect repellent.
Dimethyl benzamide N-N diethyl aniline
N-N diethyl benzamide None of these
Page 2 of 3
SLR-RA 06
Name the following synthetic pesticide.
Fluvalinate Deltamethrin
Cypermethrin Permethrin
Natural pyrethroids can not used in the field because of
Low activity Poor stability Toxicity High cost
Which of the following pesticide is not organo phosphorus
pesticide?
Malethion Thiamate Monocrotophos Dicofol
10) Rogar is trade name of
Malathion Dimethioale Phorate Diazinon
11) Condensation of trimethyl phosphate with enol form of nmethylamide
of acetoacetic ester gives.
Monocrophos Qninolphos Diazinon Phorate
12) Name the following pesticide.
Quinolphos Chloropyriphos Diazinon Dimethioate
13) Sulphur is formulated in the form of
Dust Granules Spray All the above
14) Baygon is used in the form of
Dust Bait Emulsion concentrate granules
Section- II
Attempt any two questions from this Section:
Q.2 Discus knoevenagel's reaction with mechanism 07
Give synthesis and uses of chloropyriphos and Diazinon 07
Q.3 Describe the following pesticide formulation. 07
Granules ii) Dust
What are pest and pesticides? Give their classification based on
chemical nature and types of targets
07
Q.4 Give synthesis uses of Maththion and Diamethioate 07
Discuss pinacol-pinacolone rearrangement reaction with
mechanism.
07
Section- III
Attempt any two question from this Section
Q.5 Describe the recent insect attractants and repellents 05
Give synthesis and uses of Finitrothion 05
Discuss E2 Elimination reaction with mechanism. 04
Q.6 Discuss Cannizarro's reaction with mechanism. 05
Describe the use Neem extract for pest control. 05
Describe the formulation of Aerosols 04
Q.7 Discuss SN1 reaction with mechanism. 05
Give synthesis and use of Deltamethrin 05
Give synthesis and use of Quinalphos. 04