Question Discussion & Solution

• Becquerel is the SI unit of radioactivity.
• 1 Becquerel = 1 disintegration/Second
  • Disintegration: As the radioactive elements are unstable they will disintegrate at any moment by emitting alpha or beta particles and form new elements called daughter elements which are completely different in both physical and chemical properties when compared to the elements they came from.
  • The rate of disintegration does not depend upon external factors like temperature, pressure, etc.

SMTP: simple mail transfer protocol is used for sending e-mail services between the servers.

HTTP: Hypertext transfer protocol for distributed, collaborative, hypermedia information systems.

FTP: It is an application layer protocol for file transfer

The correct answer is Dungarpur.

• Dungarpur district of Rajasthan does not touch two States of India.

Key Points

• Dungarpur district is the third smallest district of Rajasthan.
  • It shares borders with Udaipur and Banswara districts.
  • The district consists of 5 tehsils Aspur, Dungarpur, Sagwara, Simalwara and Bchiwara.
  • Places of historic importance in Dungarpur are Juna Mahal, Udai Bilas Palace, Gaib Sagar Lake and Badal Mahal.

Additional Information

• Dholpur shares border with Bharatpur and Karauli district of Rajasthan
  • It also shares a border with Agra of Uttar Pradesh and Gwalior and Moreana of Madhya Pradesh.
• Bharatpur district touches the district of Alwar, Dholpur and Dausa of Rajasthan.
  • It also shares a border with the Mathura and Agra districts of Uttar Pradesh and Gurgaon district of Haryana.
• Hanumangarh shares its borders with Churu, Sri Ganganagar, Punjab and Haryana.

Concept-

• When the functioning of one or more organs or systems of the body is adversely affected, characterized by various signs and symptoms, we say that we are not healthy, i.e., we have a disease.
• Diseases can be broadly grouped into infectious and non-infectious.
• Diseases that are easily transmitted from one person to another, are called infectious diseases.
• Infectious diseases are very common and every one of us suffers from these at some time or other. Some of the infectious diseases like AIDS are fatal.
• Non-infectious disease cancer is the major cause of death.

Important Points

• Hepatitis B is a liver disease that is caused by the hepatitis B virus (HBV).
• The virus is known to interfere with the functions of the liver and cause pathological damage.
• It can be both acute or chronic disease.
• HBV is spread by contact with the blood or body fluids of an infected person.

Explanation-

• Human beings have been abusing the water bodies around the world by disposing of them all kinds of waste.
• We tend to believe that water can wash away everything not taking cognizance of the fact that the water bodies are our lifeline as well as that of all other living organisms.
• Sewage from our homes as well as from hospitals is likely to contain many undesirable pathogenic microorganisms.
• Its disposal into the water without proper treatment may cause an outbreak of serious diseases, such as dysentery, typhoid, jaundice, cholera, etc.

Therefore Hepatitis-B is not a contaminated water disease.

Mistake Points

• Jaundice and Hepatitis B are not the same.
• Hepatitis B is a disease, while jaundice is a symptom.
• Jaundice symptom can be caused by many different reasons and Hepatitis B is just one of them. It can also be caused due to contaminated water.

Additional Information

Jaundice

• Jaundice can spread through contaminated water.
• It is a disease caused due to the accumulation of bilirubin in the blood and blood tissues.
• The disease causes yellowish discoloration of the skin, eyes, and other mucous membranes. 
• It is common in newborn babies because the newborn’s liver is not fully developed.
• Symptoms of Jaundice are fever, abdominal pain, weight loss, drowsiness, vomiting, etc.

Cholera

• Cholera is an acute diarrhoeal disease that can kill within hours if left untreated.
• It is caused due to the consumption of contaminated food or water.
• The provision of safe water and sanitation is critical to control the transmission of cholera and other waterborne diseases.
• It is caused by the bacterium Vibrio cholera.
• People may feel pain in their abdomen, nausea, vomiting, or watery Diarrhoea.
•  

The correct answer is No weight.

Explanation:

• Gravity is a force that attracts a body toward the centre of the earth or any other mass-bearing physical body.

F = mg
where F is force, 
m is mass, and 
g is acceleration due to gravity.

• The weight of an object is the force that attracts it to the earth.
• A body that is free to fall under the influence of gravity is acted upon by the force of gravity.
• However, the object is not exerting any force on any surface. As a result, the weight of object is no weight (zero).