M.Sc. (Semester IV) (CBCS) Examination Mar/Apr-2018
Agrochemicals And Pest Management
MANUFACTURE OF AGROCHEMICALS
Time: 2½ Hours
Max. Marks:70
Instructions: All Sections are compulsory. Attempt any Two questions each from Section II. Attempt any Two questions each from Section III. All questions carry equal marks
Section I
Q.1
Choose the correct answer from options given below:-
14
Maneb is sold in the market as
Heptachlor
Sevin
Dithione
Rogar
Rogar is also called as
Parathion
Diazinon
Dimenthoate
Malathion
Diethyl amine and acetoacetic acid is the starting material used for preparation of
Dimethoate
Malathion
Phosphamidon
Chloropyriphos
Cost arising when product components and materials fail to meet quality requirements prior to transfer of ownership to customer is known as cost.
Failure
Optimizing
Prevention
Appraisal
During the assessment of the purchase order, the copy of order is send to the store
To make the funds available for purchase of goods
To confirm that goods arrive in satisfactory condition
To assure that goods are coming
All of these
Imidacloprid is used as
Herbicide
Fungicide
Neonicotinoid insecticide
Rodenticide
A generalized fragment usually an ion produced by disconnection is
Synthon
Synthetic equivalent
Reagent
Product
A species which is chemically equivalent to synthon is called
Synthon
Synthetic equivalent
Reagent
Product
For the synthesis 4-D what is used as starting material?
Benzene
Phenol
Acetone
Cumene
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SLR-UA-22
10) Chlorothalonil is used as
Herbicide
Insecticide
Fungicide
Rotenticide
11) LD-50 value of thiophenate methyl is
1 mg/kg
6640 mg/kg
50 mg/kg
10000 mg/kg
12) Drying involves the removal of relatively small amount of from the solute.
Solution
Moisture
Solute
All the above
13) Volatile components from the mixture are separated by process.
Filtration
Distillation
Evaporation
None of these
14) Two solvents used in solvent extraction should be
Miscible
Immiscible
Partially miscible
None of these
Section II
Q.2
a)What is distillation? Describe fractional distillation with diagram.
07
b)Write the synthesis, properties, uses, mode of action and environmental fate of thiophenate metalaxyl.
07
Q.3
a)Define disconnection and describe types of disconnections.
07
b)Explain the main features of industrial licensing policy.
07
Q.4
a)Write synthesis, mode of action, environmental fate and applications of thiacloprid.
07
b)Explain synthesis and unit process of dimethoate.
07
Section III
Q.5
a)Describe types of dryers.
05
b)Describe R and D laboratory specifications.
05
c)Write a note on industrial safety.
04
Q.6
a)Describe liquid-liquid type of extraction.
05
b)Describe agrograde suphur.
05
c)Write a note on ASTM and BIS specifications.
04
Q.7
a)Explain what precautions should be taken while handling hazardous chemicals?
05
b)Define synthon, synthetic equivalent, FGI and target molecule.
05
c)Write a note on centrifuge machine.
04