1. Which of the following is an example of top-down approach for the preparation of nanomaterials? Explanation: Mechanical grinding is an example of top-down approach for the preparation of nanomaterials. All the other options are the example of bottom-up approach.
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What is the top-down approach Mcq?
Solution(By Examveda Team)
Top down approach is used for development. A top-down approach (also known as stepwise design and in some cases used as a synonym of decomposition) is essentially the breaking down of a system to gain insight into its compositional sub-systems in a reverse engineering fashion.
Which of the following is an example of bottom-up approach Mcq?
Which of the following is an example of Bottom Up approach? Explanation: Colloidal dispersion is an example of bottom up approach in the synthesis of Nano particles. Attrition, milling and etching are typical top down methods.
Which of the following method is an example of top down method of synthesis of nanomaterials?
Explanation: mechanical grinding is an example of top-down approach for the preparation of nanomaterials.
What is top-down approach in nanotechnology?
Top-down approach involves the breaking down of the bulk material into nanosized structures or particles. Top-down synthesis techniques are extension of those that have been used for producing micron sized particles.
What is used in top-down approach?
Top-down analysis generally refers to using comprehensive factors as a basis for decision making. The top-down approach seeks to identify the big picture and all of its components. These components are usually the driving force for the end goal. Top-down is commonly associated with the word “macro” or macroeconomics.
Which of the following is true about the top-down design approach Mcq?
Which of the following is true about top-down design process? Explanation: Top-down design is an approach for deriving a modular design in which the overall design.
Which of the following approaches is also known as the bottom-up approach Mcq?
B. C. D. Explanation: colloidal dispersion is an example of bottom up approach in the synthesis of nano particles.
Which of the following is an example of bottom Upapproach for the preparation of nanomaterials?
Explanation: dip pen nanolithography is an example of bottom-down approach for the preparation of nanomaterials. all the other options are the example of top-down approach.
What is top-down and bottom up approaches for nanomaterials?
In general, bottom-up approach is meant by synthesis of nanoparticles by means of chemical reactions among the atoms/ions/molecules (Figure 1a). Whereas top-down involves the mechanical methods to crush/breaking of bulk into several parts to form nanoparticles (Figure 1b).
Which technique is used in the making of biochips Mcq?
Which technique is used in the making of biochips? A. Nanolithography.
Is sol-gel method top-down approach?
Top-down approach:
Then carving and cutting is done until desired shape is achieved. Example: Different kinds of lithographic techniques cutting (such as electron beam, photo ion beam or X-ray lithograph cutting), etching, grinding, ball milling and sol gel technique.
Which are examples of bottom-up approach of nanotechnology?
Some of the methods used in bottom-up approach include plasma arcing, chemical vapor deposition process, metal organic decomposition, laser pyrolysis, molecular beam epitaxy, solgel method, wet synthesis, and self-assembly processes.
Which process is the top-down approach to synthesize metal nanoparticles?
The top-down approach usually involves the following processes:
- Evaporation/condensation. This has to do with metal evaporation through heating and then condensing of the obtained vapor for the purpose of obtaining nanopowders.
- Laser Pyrolysis.
- Ionic/electronic irradiation.
- Chemical techniques.
Is called as top-down approach?
A “top-down” approach is where an executive decision maker or other top person makes the decisions of how something should be done. This approach is disseminated under their authority to lower levels in the hierarchy, who are, to a greater or lesser extent, bound by them.
Which is bottom-up approach to database design Mcq?
Answer is “Normalization“
What is top-down design explain with example?
In top-down design, a system’s overview is designed, specifying, yet not detailing any first-level subsystems. Then, every subsystem is refined in greater detail, for example, sometimes dividing into many different levels of subsystem, so that the whole specification is decomposed to basic elements.
Which one of the following is a top-down parser Mcq?
3. Which one of the following is a top-down parser? Explanation: Recursive Descent also known as top down parsing also known to be LL(1).
What is top-down parser in MCQ answer?
Top down parsing: Top down parsing technique parses the input by starts constructing a parse tree from the root node moving down to the leaf nodes. Top down parser uses the left most derivation to generate the string.
Which is used in top down parsing Mcq?
Which of the following derivations does a top-down parser use while parsing an input string? Explanation: In top down parser takes input from Left to right constructing leftmost derivation of the sentence.
Which of the following approach is used by C++ Mcq?
Explanation: C++ is an object-oriented language and OOL uses a bottom-up approach to solve/view a problem.