Science-technology Questions - upsc Practice

#1

Consider the following statements regarding Nano technology: 1. It is the manipulation of matter on a near-atomic scale to produce new structures, materials and devices having a length scale between 1 and 100 nanometers. 2. Materials made of nanoparticles have a much greater surface area per unit volume ratio compared with the materials made up of bigger particles. Which of the statements given above is/are correct?

1 only 2 only Both 1 and 2 Neither 1 nor 2

#2

Consider the following statements regarding nanotechnology application in agriculture: 1. Nano priming with zinc and silica improves seed germination. 2. Nanocomposite films enhance food packaging strength. 3. Silica nanoparticles protect plants from UV radiation. 4. Nano-coatings on fruits speed up ripening. Which of the statements given above are correct?

1, 2 and 3 only 1 and 3 only 2 and 4 only All of the above

#3

With reference to the Nano Fibres, consider the following statements: 1. They are one-dimensional nanomaterials of fibre shape with a diameter in the range of ten to hundreds of nanometres. 2. Electrospinning is one technique available for the synthesis of nanofibres. Which of the statements given above is/are incorrect?

1 only 2 only Both 1 and 2 Neither 1 nor 2

#4

In the context of nanotechnology, the term ‘nanomicelles’ is used for which of the following?

They are nanoparticles for targeted drug delivery in cancer treatment. It refers to the process of using nanorobots in the automobile industry. They are the nano fibres used in the technical textile industry. They are critical nanoparticles used in the aerospace industry.

#5

Which of the following statements about Carbon Nanotubes (CNTs) are correct? 1. They can be used in electrical wires to decrease losses and enhance efficiency. 2. These tubes emit high heat due to their small size. 3. They are used in solar cells to enhance the efficiency of energy conversion. Select the correct answer using the code given below:

1 and 2 only 2 and 3 only 1 and 3 only 1, 2, and 3

#6

The term “Cor-AuNPs” is often mentioned in the news is related to:

A nano genome editing technique as an alternative to Crisper Cas9, to induce desired change in the DNA. Nanoparticles derived from the synthesis of parasitic fungus and gold salts , which can do targeted drug delivery. A molecular-scale motor made by using the DNA origami method A new carbon nanotube based fiber able to conduct heat and electricity.

#7

Consider the following statements with reference to the Triboelectric Nanogenerator (TENG): 1. It can convert mechanical energy into electricity for use in Internet of Things (IoT) devices. 2. It can be used to generate electricity from raindrops and waves. Which of the statements given above are correct?

1 only 2 only Both 1 and 2 Neither 1 nor 2

#8

Which of the following statements about Nanomedicine is/are correct? 1. Nanomedicine uses nanoparticles to deliver drugs with high precision, targeting specific diseased cells while minimizing damage to healthy cells. 2. Nanoparticles such as liposomes are used exclusively for enhancing imaging techniques and have no role in drug delivery systems. 3. Quantum dots are commonly used in nanomedicine because of their fluorescence properties, which assist in diagnostics and imaging. Select the correct answer using the code given below:

1 only 1 and 3 only 2 and 3 only 1, 2, and 3

#9

Consider the following statements about Indian Nanoelectronics User Program: 1. Under the project, the Centre of Excellence in Nanoelectronics has been created at all IIT’s. 2. The major focus is research and training of inhouse researchers and students. 3. The program is funded by the Department of Science and Technology. How many of the statements given above are correct?

Only one Only two All three None

#10

Which one of the following best describes the term “GRAY GOO” sometimes seen in news?

It is a hypothetical situation where self-replicating nano robots go out of control, and destroy all other life forms on the earth. It is a Micro-Electromechanical System to detect explosives. It is a condition in which an infant experiences a life threatening reaction to the antibiotic Chloramphenicol. None of the above