171.

The pioneer country in the production of fuel alcohol is

• Saudi Arabia 

• Iran, Iraq

• Brazil

• Japan

Which of the following gland is often referred in relation with AIDS

• Thyroid

• Thymus

• Adrenal

• Pancreas

Which one of the following bacterium is used extensively as biopesticide?

• Bacillus subtilis

• Bacillus thuringiensis

• Streptococcus lactis

• Lactobacillus acidophilus

Koch's postulates are not applicable to

• TB 

• leprosy

• cholera

• diphtheria

Name one frequently used fungicide

• griseofulvin

• chloramphenicol

• cycocel

• ethylene

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

Genetically engineered bacteria are being employed for production of

• thyroxin

• human insulin

• cortisol

• epinephrine

Which one of the following is biological insecticide?

• Tiger beetle

• Caterpillar

• Silkmoth

• Mazra poka

A good producer of citric acid is

• Aspergillus

• Pseudomonas

• Clostridium

• Saccharomyces

Which of the following statement(s) are true?

• Antibiotics can kill bacteria, but disinfectants do not

• Disinfectants have better bactericidal efficiency than antibiotics

• Antibiotics are of microbial origin, but disinfectants are chemical compounds

• Antibiotics can be injected into the patients, whereas disinfectants are not