CBSE Class 12 Microbes in Human Welfare — practice questions
43 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CBSE Class 12 Microbes in Human Welfare in the app →Anabaena and Nostoc are examples of:Milk is converted into curd by which micro-organism?The puffed up appearance of dough is caused by:The yeast used in baking and brewing is:The first antibiotic to be discovered was:Penicillin was discovered by:Municipal waste water is also called:The gas produced by microbes from dung and used as fuel is:Lactic acid bacteria coagulate milk protein by producing:The large holes in Swiss cheese are produced by:Penicillin was named after which mould?Cyclosporin A is obtained from which organism?BOD stands for biochemical oxygen:Sewage is treated until its BOD is:Bacteria that produce methane in a biogas plant are called:A common methane producing bacterium is:Biogas made from cattle dung is commonly called:The fungus developed as a biological control for plant disease is:Baculoviruses are used as biological control agents against:Root nodules of legumes are formed by symbiosis with:Cyanobacteria such as Anabaena serve as biofertilisers in:Milk is turned into curd by bacteria called:Lactic acid bacteria set milk by producing:A small amount of curd added to fresh milk acts as a:Curd improves nutrition by increasing a vitamin of the group:The puffed up look of dosa and idli dough comes from:Bread dough is fermented using baker's:Toddy is a traditional drink made by fermenting sap from:Swiss cheese gets its large holes from which gas:Roquefort cheese is ripened by growing on it a specific:Penicillin was discovered by chance by:Penicillin takes its name from the mould:Penicillin's full potential was established by Howard Florey and:Penicillin was used extensively to treat soldiers wounded in:Fleming, Chain and Florey received the Nobel Prize in:Sewage treatment begins with a stage that removes particles by:Solids settling out in primary treatment form the primary:In secondary treatment the effluent goes into large tanks that are:Masses of bacteria with fungal filaments in aeration tanks are called:The sediment settling after secondary treatment is called activated:The remaining sludge is digested in tanks that are:Biogas produced from dung is commonly called:Bacteria producing biogas are known as: