Most of the explosions in mines occur due to the mixing of
- (a)hydrogen with oxygen
- (b)oxygen with acetylene
- (c)methane with air
- (d)carbon dioxide with ethane
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Official answer(c) methane with air
Other questions on Health & Diseases
Consider the following statements : I. No virus can survive in ocean waters. II. No virus can infect bacteria. III. No virus can change the cellular transcriptional activity in host cells. How many of the statements given above are correct?
- (a)Only one
- (b)Only two
- (c)All the three
- (d)None
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Official answer(d) None
‘Wolbachia method’ is sometimes talked about with reference to which one of the following?
- (a)Controlling the viral diseases spread by mosquitoes
- (b)Converting crop residues into packing material
- (c)Producing biodegradable plastics
- (d)Producing biochar from thermo-chemical conversion of biomass
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Official answer(a) Controlling the viral diseases spread by mosquitoes
Consider the following statements : 1. Biofilms can form on medical implants within human tissues. 2. Biofilms can form on food and food processing surfaces. 3. Biofilms can exhibit antibiotic resistance. Which of the statements given above are correct ?
- (a)1 and 2 only
- (b)2 and 3 only
- (c)1 and 3 only
- (d)1, 2 and 3
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Official answer(d) 1, 2 and 3
Consider the following statements in respect of probiotics : 1. Probiotics are made of both bacteria and yeast. 2. The organisms in probiotics are found in foods we ingest but they do not naturally occur in our gut. 3. Probiotics help in the digestion of milk sugars. Which of the statements given above is/are correct ?
- (a)1 only
- (b)2 only
- (c)1 and 3
- (d)2 and 3
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Official answer(c) 1 and 3
In the context of vaccines manufactured to prevent COVID-19 pandemic, consider the following statements : 1. The Serum Institute of India produced COVID-19 vaccine named Covishield using mRNA platform. 2. Sputnik V vaccine is manufactured using vector based platform. 3. COVAXIN is an inactivated pathogen based vaccine. Which of the statements given above are correct ?
- (a)1 and 2 only
- (b)2 and 3 only
- (c)1 and 3 only
- (d)1, 2 and 3
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Official answer(b) 2 and 3 only
Consider the following : 1. Bacteria 2. Fungi 3. Virus Which of the above can be cultured in artificial/synthetic medium?
- (a)1 and 2 only
- (b)2 and 3 only
- (c)1 and 3 only
- (d)1, 2 and 3
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Official answer(a) 1 and 2 only