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A garments factory employs 3 categories of workers K, M and N. The efficiency of the 3 categories of workers to do a specific task is in the ratio of 3 : 5 : 6 respectively and the factory employs 15 of category K, 12 of category M and 3 of category N. If the total wages paid to the entire group of 30 workers is Tk. 492 per hour, what will be the wages earned by a category N worker for an 8-hour day?
ক Tk. 144
খ Tk. 72
গ Tk. 192
ঘ Tk. 576
Microorganisms which are normal flora of vagina and cause meningitis in newborn are
ক E. coli
খ Streptococcus agalactiae
গ Candida albicans
ঘ Ureaplasma urealyticum
ঙ Staphylococcus epidermidis
After phagocytosis microorganisms are killed by
ক Hydrogen peroxide
খ Lysozyme
গ Myelo peroxidase alone
ঘ Complement system
ঙ Immunoglobulins
Facultative intracellular microorganisms are
ক Salmonella paratyphi
খ Mycobacterium bovis
গ Bacillus cereus
ঘ Vibrio cholera
ঙ E.coli
Congenital infections caused by microorganisms are
ক Cytomegalo virus
খ Treponema pallidum
গ Toxoplasma gondii
ঘ Streptococcus agalactiae
ঙ Influenzae A virus
Following microorganisms are transmitted through milk
ক Salmonella paratyphi
খ Mycobacterium bovis
গ Vibrio cholerae
ঘ E. coli
ঙ Bacillus cereus
Microorganisms that cause bloody diarrhea are
ক Shigella dysenteriae
খ Enterohemorrhagic Escherichia coli
গ Enterotoxigenic Escherichia coli
ঘ Giardia lamblia
ঙ Rotavirus
Following microorganisms may betransmitted by blood transfusion
ক Leishamania donovani
খ Plasmodium
গ Treponema pallidum
ঘ Wuchereria bancrofti
ঙ Mycobacterium tuberculosis
Microorganisms that are potential cause of blindness include
ক Chlamydia trachomaiis
খ Toxocara canis
গ Neisseria gonorrhoeae
ঘ Onchocerca volvulus
ঙ Loa loa
Chemicals like ________ may be added to different foods or fruits to prevent or retard the growth microorganisms.
ক Potasium
খ Calcium
গ Potassium metabisulphite
ঘ Sulphur

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