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Science & Tech

Triclosan considered harmful when exposed to high levels for a long time, is most likely present in which of the following? 

(a) Food preservatives  (b) Fruit-ripening substances  (c) Reused plastic containers  (d) Toiletries  Ans: d  Explanation: Triclosan is an antimicrobial active...

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Bisphenol A (BPA), a cause of concern, is a structural/key component in the manufacture of which of the following kinds of plastics?

(a) Low-density polyethylene  (b) Polycarbonate  (c) Polyethylene terephthalate  (d) Polyvinyl chloride  Ans: b  Explanation: PC (polycarbonate) has good transparency and...

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The term ‘ACE2’ is talked about in the context of: 

(a) genes introduced in the genetically modified plants  (b) development of India’s own satellite navigation system  (c) radio collar for...

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With reference to street lighting, how do sodium lamps differ from LED lamps? 

1. Sodium lamps produce light in 360 degrees but it is not so in the case of LED lamps.  2....

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Water can dissolve more substances than any other liquid because: 

(a) it is dipolar in nature  (b) it is a good conductor of heat  (c) it has high value of...

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Consider the following statements: 

Consider the following statements:  1. Adenoviruses have single-stranded DNA  genomes whereas retroviruses have double stranded DNA genomes.  2. Common cold...

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Consider the following: 

Consider the following:  1. Bacteria  2. Fungi  3. Virus  Which of the above can be cultured in an artificial /synthetic...

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In a pressure cooker, the temperature at which the food is cooked depends mainly upon which of the following? 

1. Area of the hole in the lid 2. Temperature of the flame  3. Weight of the lid  Select the...

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Bollgard I and Bollgard II technologies are mentioned in the context of 

(a) clonal propagation of crop plants  (b) developing genetically modified crop plants  (c) production of plant growth substances  (d) production...

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In the context of hereditary diseases, consider the following statements: 

1. Passing on mitochondrial diseases from parent to child can be prevented by mitochondrial replacement therapy either before or after...

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