Important Questions of Microbes in Human Welfare Biology | Zigya

Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.
Advertisement

 Multiple Choice QuestionsMultiple Choice Questions

Advertisement
71.

Leprosy is also called as

  • Hansen's disease

  • sarcoma

  • slim disease

  • leukamia


72.

A simple technology has been developed in India for plant breeders and farmers to use two plants as biofertilizers for growing rice. These are

  • Azotobacter and Rhizobium

  • Chlorella and Spirulina

  • Azolla and nitrogen fixing blue-green algae

  • Riccia and Marchantia


73.

Yeast is used in the production of :

  • acetic acid

  • citric acid

  • ethyl alcohol

  • curd


74.

Streptomycin was isolated first time by :

  • A. Flemming

  • Robert Koch

  • N. Borlaug

  • S. Waksman


Advertisement
75.

Which of the following micro-organism is used for conversion of milk into curd?

  • Xanthomonas citri

  • Bacillus megatherium

  • Acetobacter aceti

  • None of the above


76.

Which of the following is the product of glucose fermentation by yeast?

  • C6H12O6

  • C2H5OH

  • (C6H10O5)n

  • CH2OH


77.

The pesticide used as preventive measure in buildings is :

  • aldrin

  • dieldrin

  • endrin

  • DDT


78.

Cheese and yogurt are the products of

  • dehydration

  • fermentation

  • pasteurization

  • distillation


Advertisement
79.

Curdling of milk in small intestine occurs due to the action of

  • rennin

  • erypsine

  • trypsin

  • chymotrypsin


80.

Which of the following pesticides is an acetylcholinesterase inhibitor?

  • Aldrin

  • BHC

  • Endosulfan

  • Malathion


Advertisement