Question Discussion & Solution

The correct answer is Generation.

• The letter 'G' has been used for Generation in 4G technology in mobile communication.

Key Points

• Meaning of 'G' in mobile signal
  • The G in 2G, 3G and 4G stands for Generation, and they refer to the 2nd, 3rd and 4th generation of wireless technology. 
  • The higher the generation the better, fast, and powerful will be the network.
  • Letter G stands for GPRS (General Packet Radio Service).
  • It indicates the slowest speed of internet data transfer on our mobile phone.

​Additional Information

• Meaning of 'E' in mobile signal
  • Letter E stands for EDGE (Enhanced Data Rates for GSM Evolution).
  • It is also called Enhanced GPRS.
  • This technology lies somewhere in between 2G and 3G technology.
  • So, some people refer to it as 2.5G.

The correct answer is Sarah Taylor.

• Former England wicketkeeper batter Sarah Taylor has become the first woman coach in men's professional franchise cricket.
• She was named assistant coach of Team Abu Dhabi for the Abu Dhabi T10 league beginning 19 November 2021.
• She became the first woman specialist coach at a men’s county side with Sussex in the United Kingdom.
• She played in 10 Tests, 126 ODIs, and 90 T20Is before retiring in 2019.

The correct answer is Liver.

Key Points

• The liver secretes bile juice, which is a digesting juice.
• Bile is stored in the gallbladder.
• Bilirubin and biliverdin, as well as bile salts and cholesterol, make up bile juice.
• Bile juice helps in the emulsification of fat.
• Large fat globules are broken down into smaller globules by bile juice, making it easier for pancreatic enzymes to act on them.
• The human liver is the largest gland in the body.
• The liver is situated on the right side of the stomach.
• The main function of the liver is to produce bile pigment.
• Ammonia and urea are produced in the liver.

Additional Information

• Insulin and Glucagon are the hormones secreted by the pancreas.
• The nutrients in digested food are absorbed from the small intestine.
• The stomach is a hollow organ that holds food while it is being mixed with stomach enzymes.

The correct answer is gain of oxygen

Concept:

Chemical Reactions:

• A process in which one or more compounds are formed as products completely different from the reacting substances is known as a chemical reaction.
• There is generally a change in heat, colour, or appearance when a chemical reaction takes place.
• The evolution of gas may also occur.
• A chemical reaction may be reversible or irreversible in nature.

Oxidation reaction:

• Oxidation Reaction refers to a reaction in which either the addition of Oxygen takes place or the removal of Hydrogen takes place.
• It can also be said as the process of loss of one or more electrons by atoms or ions.
• Example is:

Mg + O2 = Mg2O

Reduction Reaction:

• Reduction Reaction refers to a reaction in which either the addition of Hydrogen takes place or the removal of oxygen takes place.

• In the process of reduction, a chemical species also gains electrons.
• It is the reverse of the oxidation reaction.
• Example is:

H2 + F2 → HF

Explanation:

Oxidation is a chemical reaction that is characterized by 

• loss of electron
• addition of oxygen atom
• removal of the hydrogen atom 

The substance that undergoes oxidation is said to be oxidized.

The loss of electrons and an increase in the oxidation state are the characteristics of an oxidation reaction.

For example:

H2S + Cl2 → 2HCl + S

In this reaction, the chlorine is getting reduced to hydrochloric acid (HCl) on the addition of hydrogen provided by Hydrogen sulfide (H2S).

LAN :

• LAN stands for Local Area Network.
• It's a group of computers which belong to the same organisation, and are linked within a small geographic area using a network using the same technology (Ethernet).
• E.g. Wi-Fi

MAN :

• MANs (Metropolitan Area Networks) connect multiple geographically nearby LANs to one another at high speeds.
• A MAN lets two remote nodes communicate as if they were part of the same local area network.
• E.g. microwave antenna on a TV news van, extended high in the air, beaming video and sound back to the main TV studio.

WAN:

• A WAN (Wide Area Network or extended network) connects multiple LANs to one another over great geographic distances.
• WANs operate using routers, which can "choose" the most appropriate path for data to take to reach a network node.
• E.g.: Internet

PAN:

• A personal area network (PAN) is a network used for data transmission amongst devices such as computers, telephones, tablets, personal digital assistants, fax machines and printers, that are located close to a single user

E.g. Bluetooth