CBSE
Multiple Choice QuestionsWhich one of the following is biological insecticide?
Tiger beetle
Caterpillar
Silkmoth
Mazra poka
Genetically engineered bacteria are being employed for production of
thyroxin
human insulin
cortisol
epinephrine
Which of the following insecticide is obtained from the roots of Derris elliptica ?
Cinerin
Nicotine
Rotenone
Pyrethrum
Which one of the following bacterium is used extensively as biopesticide?
Bacillus subtilis
Bacillus thuringiensis
Streptococcus lactis
Lactobacillus acidophilus
Which of the following gland is often referred in relation with AIDS
Thyroid
Thymus
Adrenal
Pancreas
The pioneer country in the production of fuel alcohol is
Saudi Arabia
Iran, Iraq
Brazil
Japan
Creosote is used to prevent:
rusts of wheat
dry rot of wood
loose smut of oats
brown rust of barley
Increase of BOD in water leads to
increase in the dissolved O2 concentration
decrease in the dissolved O2 concentration
maintenance of dissolved O2 concentration at the same level
no effect on dissolved O2 concentration
Name one frequently used fungicide
griseofulvin
chloramphenicol
cycocel
ethylene
Koch's postulates are not applicable to
TB
leprosy
cholera
diphtheria
