miscellaneous

Question 1

BOD full form

Answer 1

biochemical oxygen demand

Question 2

BOD for clean water

Answer 2

<5 ppm

Question 3

BOD of highly polluted water

Answer 3

> 17ppm

Question 4

heavy metals as inorganic pollutants

Answer 4

Cd, Hg, Ni

Question 5

what does heavy metal do

Answer 5

damage CNS, liver, kidneys

Question 6

which metal interferes with the maturity of RBC

Answer 6

Pb

Question 7

what is eutrophication

Answer 7

loss of biodiversity

Question 8

tolerable limit of nitrates

Answer 8

50 ppm

Question 9

nitrates causes

Answer 9

blue baby syndrome

Question 10

tolerable limit of flourides

Answer 10

1 to 2 ppm

Question 11

effect of flourides

Answer 11

bones and teeth degradation

Question 12

tolerable limit of sulphates

Answer 12

500 ppm

Question 13

effect of sulphates

Answer 13

laxative effect

Question 14

tolerable limit of lead

Answer 14

50 ppb

Question 15

effect of Pb

Answer 15

kidney, brain, liver, RBS DEGRADATION

Question 16

pH of drinking water

Answer 16

5.5-9.5

Question 17

when was DDT banned

Answer 17

1985

Question 18

eg of organochlorines

Answer 18

DDT, BHC, aldrein, endrin, dieldrin

Question 19

which pesticides are less persistent

Answer 19

carbamates, organophosphates

Question 20

hebricides eg

Answer 20

sodium chlorate, sodium arsenite

Question 21

biodegradable waste are produced by

Answer 21

cotton mills, food processing units, paper mills, textile factories

Question 22

non biodegradable waste are produced by

Answer 22

fertilizer industries, mud and tailing from metal industries, slag from steel industries, fly ash from thermal power plants

Question 23

how can we do prevention of industrial waste

Answer 23

incineration

Question 24

what was earlier used a s a solvent for dry cleaning

Answer 24

tetrachloroethene

Question 25

new solvent for dry cleaning

Answer 25

H2O2

Question 26

new compound for bleaching paper

Answer 26

H2O2

Question 27

replacement of halogenated solvent is

Answer 27

liquid CO2

Question 28

herbicide is produced by what in green chemistry

Answer 28

catalytic hehydrogenation of diethanolamine

Question 29

which drug is successfully prepared by green chemistry

Answer 29

ibuprofen

Question 30

preparation of ethanal requires which catalyst

Answer 30

Pd/Cu in water

Question 31

who won nobel prize for metathesis

Answer 31

yves chauvin, robert h grubbs, richard r schrokk