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Question 21 Mark
True or False : Various products like food and cosmetics are produced on a large scale with the help of micro - organisms.
Answer
False : Various products like food and medicines are produced on a large scale with the help of micro-organisms
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Question 31 Mark
True or False : Useful microbes become inactive due to antibiotics, probiotics make them active again.
Answer
True
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Question 41 Mark
True or False : Soyabean sauce is produced with the help of fungus Aspergillus oryzae
Answer
False : Soyabean sauce is produced with the help of froigus Aspergillus oryzae.
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Question 51 Mark
True or False : Probiotics are used for treatment of cough and cold.
Answer
False : Probiotics are used in the treatment of diarrhea.
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Question 61 Mark
True or False : On storing for 3 to 12 months, very hard cheese called Parmesan cheese is formed.
Answer
False : On storing for 3 to 12 months, semi-hard cheddar cheese is formed.
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Question 71 Mark
True or False : Nowadays, probiotics are used for treatment of diarrhoea and treatment of poultry.
Answer
True
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Question 111 Mark
True or False : Microbial enzymes are inactive at low temperature.
Answer
False: Microbial enzymes are active at low temperature
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Question 151 Mark
True or False : Industrial microbiology uses microbes for garbage management and pollution control.
Answer
True
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Question 171 Mark
True or False : Cheese is produced on large scale from abundantly available cow milk all over the world.
Answer
True
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Question 181 Mark
True or False : Bio-fuel is among non-renewable source of good energy.
Answer
False: Bio-fuel is among renewable source of good energy.
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Question 191 Mark
True or False : Basic process for production of yoghurt, cheese and cream is different.
Answer
False : Basic process for production of yoghurt, cheese and cream is same.
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Question 201 Mark
True or False : Bacteria used to clear oil spills are called phenol oxidising bacteria.
Answer
False : Bacteria used to clear oil spills are called hydrocarbonoclastic bacteria (HCB).
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Question 211 Mark
True or False : Bacterial strains of Streptococcus thermophilus and Lactobacillus delbrueckii are added to warm temperature milk in 2:1 proportion.
Answer
False : Bacterial strains of Streptococcus thermophilus and Lactobacillus delbruecku are added to warm temperature milk in 1 : 1 proportion.
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Question 221 Mark
True or False : Antibiotics maintain the balance of intestinal microorganisms.
Answer
False : Probiotics maintain the balance of intestinal microorganisms.
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Question 241 Mark
True or False : Acetic acid is bleached with the help of potassium permanganate.
Answer
False : Acetic acid is bleached with the help of potassium ferrocynide.
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Question 251 Mark
Find An Odd One Out : Spirulina, Chlorella, Blue green algae, Actinomycetes.
Answer
Actinomycetes : Species of fungi – others are probiotic algae.
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Question 261 Mark
Find An Odd One Out : Penicillin, Erythromycin, Gentamycin, Acetic acid.
Answer
Acetic acid – Others are antibiotics.
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Question 271 Mark
Find An Odd One Out : Oxidoreductases, tranferases, ligases, papain.
Answer
Papain Enzyme present in papaya plant – whereas others are microbial enzymes.
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Question 281 Mark
Find An Odd One Out : Lactobacillus lactis, Lactobacillus delbrueckii. Lactobacillus cremoris. Streptococcus thermophilus,
Answer
Lactobacillus delbrueckii – Others are used in cheese production, whereas Lactobacillus delbrueckii is used in yoghurt production.
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Question 291 Mark
Find An Odd One Out : Gentamycin, Streptomycin, Natamycin, Neomycin.
Answer
Natamycin – Others are antibiotics, wherens Natamycin is used as microbial restrictor.
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Question 301 Mark
Find An Odd One Out : Cutting, washing, rubbing, scrubbing.
Answer
Scrubbing: This process is not included in cheese production.
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Question 311 Mark
Find An Odd One Out : Citric acid, Malic acid, Glutamic acid, Lactic acid.
Answer
Glutamic acid – Others are used to impart acidity whereas glutamic acid is used for protein binding.
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Question 321 Mark
Find An Odd One Out : Chilli sauce, soya sauce, vinegar, monosodium glutamate.
Answer
Chili sauce: Others are formed by microbial fermentation
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Question 341 Mark
Find An Odd One Out : Beta carotene, lycopene, Xanthene, Xanthan.
Answer
Xanthan Others are used as edible colours – whereas Xanthan gum is used to impart thickness.
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Question 351 Mark
Find An Odd One Out : Actinomycetes, Streptomyces, Nocardia, Pseudomonas
Answer
Pseudomonas – HCB bacteria. Others are fungi which decomposes rubber
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Question 361 Mark
Find An Odd One Out : Acidophilus, Bifidobacterium bifidum, Clostridium, Lactobacillus casei.
Answer
Clostridium: Others are useful microbes. whereas Clostridium is a harmful microbe.
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Question 431 Mark
Name the Following :Substances which are used as essence.
Answer
Vanillin, Ethyl butyrate (fruit flavour), peppermint flavour, essence of various fruits and flowers
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Question 461 Mark
Name the Following :Substances which are edible colours.
Answer
Beta carotene, lycopene, xanthenes, lutein.
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Question 481 Mark
Name the Following :Substances which are antioxidants and vitamins.
Answer
Ascorbic acid (Vit C), B12, B2
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Question 491 Mark
Name the Following :Steps for process of cheese production.
Answer
Cutting, washing, rubbing, salting, mixing, ripening.
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Question 501 Mark
Name the Following :Species of fungi which decompose rubber from garbage
Answer
Actinomycetes, Streptomyces. Nocardia. Actinoplanes.
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Do As Directed. - Science STD 10 Questions - Vidyadip