Triclosan considered harmful when exposed to high levels for a long time, is most likely present in which of the following?
Triclosan considered harmful when exposed to high levels for a long time, is most likely present in which of the following?(2021) a) Food preservatives b) Fruit ripening substances c) reused plastic containers d) Toiletries. Answer: D Triclosan is used as antimicrobial chemicals to increase the shelf life of consumer products. In a recent study it […]
Which one of the following is a reason why astronomical distances are measured in light-years?(2021)
Which one of the following is a reason why astronomical distances are measured in light-years?(2021) a) Distance among stellar bodies do not change. b) Gravity of stellar bodies does not change c) Light always travels in straight line. d) Speed of light is always same. Answer: D Cosmologists use the light year as a measuring […]
With reference to street-lighting, how do sodium lamps differ from LED lamps?
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. As street-lights, sodium lamps have longer life span than LED lamps. 3.The spectrum of visible light from sodium lamps is almost monochromatic while […]
The term ‘ACE2” is talked about in the context of
The term ‘ACE2” is talked about in the context of(2021) a) genes introduced in the genetically modified plants b) development of India’s own satellite navigation system c) radio collars for wildlife tracking d) spread of viral diseases Answer: D On the surface of human cells is an enzyme called ACE2, which acts as the receptor […]
Bisphenol A (BPA), a cause of concern, is a structural/key component in the manufacture of which of the following kinds of plastics?
Bisphenol A (BPA), a cause of concern, is a structural/key component in the manufacture of which of the following kinds of plastics?(2021) a) Low-density polyethylene b) Polycarbonate c) Polyethylene terephthalate d) Polyvinyl Chloride Answer: B BPA is a precursor to important plastics, primarily certain polycarbonates and epoxy resins, as well as some polysulfones and certain […]
Which one of the following is used in preparing a natural mosquito repellent?
Which one of the following is used in preparing a natural mosquito repellent?(2021) a) Congress grass b) Elephant grass c) Lemon grass d) Nut grass Answer: C Self explanatory
With reference to recent developments regarding ‘Recombinant vector Vaccines’, consider the following statements:
With reference to recent developments regarding ‘Recombinant vector Vaccines’, consider the following statements: 1. Genetic engineering is applied in the development of these vaccines. 2. Bacteria and viruses are used as vectors. Which of the statements given above is/are correct?(2021) a) 1 only b) 2 only c) Both 1 and 2 d) Neither 1 nor […]
Bollgard I and Bollgard II technologies are mentioned in the context of
Bollgard I and Bollgard II technologies are mentioned in the context of(2021) a) Clonal propagation of crop plants b) Developing genetically modified crop plants c) Production of plant growth substances d) Production of biofertilizers Answer: B Bollgard I Bt cotton (single-gene technology) is India’s first biotech crop technology approved for commercialization in India in 2002, […]
In a pressure cooker, the temperature at which the food is cooked depends mainly upon which of the following?
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 correct answer using the code given below.(2021) a) 1 and 2 only b) 2 and 3 […]
Which of the above can be cultured in an artificial/ synthetic medium?
Consider the following: 1. Bacteria 2. Fungi 3. Virus Which of the above can be cultured in an artificial/ synthetic medium?(2021) a) 1 and 2 only b) 2 and 3 only c) 1 and 3 only d) 1,2 and 3 Answer: AUnlike bacteria, many of which can be grown on an artificial nutrient medium, viruses […]