CLASS VIII SCIENCE MCQ

QUESTION 1 The microbe that reproduce only inside the body of the host organism

a) Bacteria b) Virus c) Protozoa d) Fungi

QUESTION 2 Disease like Dysentery and Malaria are caused by:

a) Fungi b) Bacteria c) Protozoa d) Virus

QUESTION 3 Micro organism use in the baking industry for making breads

a) Algae b) Fungi c) Yeast d) Moulds

QUESTION 4 Edward Jenner in 1798 discovered the vaccine for ______________

a) Chicken pox b) Polio c) Small pox d) Rabies

QUESTION 5 Disease causing micro organisms are called________________

a) Carriers b) Pathogens c) Antibodies d) Microbes

QUESTION 6 Dengue fever is spread by

a) House fly b) Female Anopheles mosquito c) Female Aedes mosquito d) Bees

QUESTION 7 Hepatitis B is spread by:

a) Bacteria b) Virus c) Protozoa d) Fungi

QUESTION 8 Anthrax is caused by____________

a) Fungi b) Bacteria c) Protozoa d) Virus

QUESTION 9 Robert Koch in 1876 discovered the microbe causing _____________ disease

a) Foot and mouth disease b) Rust of wheat

c) Citrus Canker d) Anthrax

QUESTION 10 Yellow vein mosaic of bhindi is a disease caused in plants by___________

a) Bacteria b) Virus c) Protozoa d) Fungi

QUESTION 11 Sodium Benzoate is a _______________

a) Vaccine b) Preservative c) Antibiotic d) Pesticide

QUESTION 12 Jellies are preserved by________________

a) Salt b) Vinegar c) Sugar d) Air tight packets

QUESTION 13 Raw mangoes are preserved by___________.

a) Sugar b) Salt c) oil d) Cold treatment

QUESTION 14 Rhizobium is a kind of ______________.

a) Virus b) Bacteria c) Fungi d) Protozoa

QUESTION 15 Fixing nitrogen in the soil is done by______________.

a) Protozoa b) Bacteria c) Fungi d) Virus

QUESTION 16 Setting of curd is promoted by____________.

a) Yeast b) Virus c) Lacto bacillus d) Rhizobium

QUESTION 17 AIDS is caused by_________________.

a) Bacteria b) Virus c) Yeast d) Algae

QUESTION 18 Yeast is used in the production of ________________.

a) Sugar b) Alcohol c) Hydrochloric acid d) Oxygen

QUESTION 19 The following is an antibiotic.

a) Sodium bi carbonate b) Streptomycin c) Alcohol d) Yeast

QUESTION 20 The most common carrier of communicable disease is_______________.

a) Spider b) Dragon fly c) House fly d) Ant