31.Vinegar is also called
(A) Yeast
(B) Alcohol
(C) Crushed fruit juice
(D) Acetic acid
32.Process of conversion of sugar into alcohol is known as
(A) Ventilation
(B) Pigmentation
(C) Fermentation
(D) Purification
33.Who discovered the process of fermentation in 1857?
(A) Alexander Fleming
(B) Louis Pasteur
(C) Edward Jenner
(D) Adison
34.The medicines which kill or stop the growth of disease causing microorganisms in our body are called ………..
(A) Antibiotics
(B) Vaccination
(C) Painkillers
(D) None of the above
35.Which of the antibiotic is made from fungi and bacteria?
(A) Streptomycin
(B) Tetracycline
(C) Erythromycin
(D) All of the above
36.Who discovered penicillin in 1929?
(A) Alexander Fleming
(B) Edward Jenner
(C) Louis Pasture
(D) None of the above
37.Which of the diseases can be prevented by vaccination?
(A) Cholera
(B) Tuberculosis
(C) Small pox and hepatitis
(D) All of the above
38.Edward Jenner discovered the first vaccine for
(A) Cholera in 1880
(B) Small pox in 1798
(C) Rabies in 1885
(D) Tetanus in 1890
39.Antibiotics are also mixed with the feed of livestock and poultry to check their …………..
(A) Microbial infection
(B) Foot and mouth disease
(C) Both A and B
(D) None of the above
40.The plant waste has been converted into manure by the action of …….
(A) Humus
(B) Nitrogen
(C) Microbes
(D) None of the above
Answers:-
| 31-(D) | 32-(C) | 33-(B) | 34-(A) | 35-(D) | 36-(A) | 37-(D) | 38-(B) | 39-(C) | 40-(C) |