Questions

Russia has decided to venture into Internet of things with new satellite system 'Marathon'.

Digital payments firm Paytm has partnered with China's Alibaba to launch AI-based cloud computing platform 'Paytm AI Cloud'.

The platform will offer business-centric apps to developers, startups and enterprises that need cloud-computing solutions including customer engagement and easy-to-integrate payments.

a.) Testing and Debugging 

Testing is process of verifying if the application matches requirements and reporting bugs; Testing is usually done by an independent testing team while debugging is a process of finding and fixing bugs with the intention of reducing bugs; Debugging is usually done by the programmer.

b.) Two tier and Three tier architecture

In a two tier architecture there is a data server and a client application. Client application directly accesses the server data. In a three tier architecture there is a data server, a client application and a server application. Client application calls the server application which in turn fetches data from the data server and returns back to client application.

c.) Alpha testing and Beta testing

Alpha testing is conducting acceptance testing in the environment where the application was developed. It is done by the customer. Beta testing is conducting acceptance testing is the customer environment. It is done by the group of customers or users who will actually be using it.

d.) Static testing and dynamic testing

Static testing is checking the application without actually running the application whereas dynamic testing checks the application by running it.

Oxidizing and reducing agents depend upon the reactant. Oxidizing and reducing agents are key terms used in describing the reactants in redox reactions that transfer electrons between reactants to form products.

No work done as there is no external external pressure in free expansion. 

Hence, Work done in a free expansion process is Zero.

Heat energy can be transferred by three major methods. They are 

1. Conduction,

2. Convection and

3. Radiation.

Conduction is the movement of heat through a substance by the collision of molecules

Convection occurs when particles with a lot of heat energy in a liquid or gas move and take the place of particles with less heat energy.

Radiation is the transfer of energy by means of photons in electromagnetic waves governed by the same laws. It occurs through a vacuum or any transparent medium.

Chemical weathering is what happens when rocks are broken down and chemically altered.

Chemical weathering is the breakdown of rocks by chemical reactions. Chemical weathering involves changes in the chemical composition of the existing rock to form new rock. Some examples of chemical weathering are hydrolysis, oxidation, carbonation, dissolution, etc.