Question Discussion & Solution

The correct answer is between 13 to 20 days.

Key Points

• The life span of the WBC is between 13 to 20 days. 
• The life span of the RBC is 20-120 days and it gets destroyed in the spleen area of the human body to recycle Iron content.
• The life span of the blood platelets is 3-5 days. 
• WBC's are mainly responsible for the protection of the body from diseases.

Additional Information

 Important Points

• WBCs are also called leukocytes or white corpuscles.
• The life span of WBCs is 13 to 20 days.
• Total WBCs count ranges from 4,500 to 10,000.
• WBCs are a cellular component of the blood that lacks hemoglobin, has a nucleus, is capable of mobility, and producing antibodies.
• They act as a " Soldier or Guard " of our body.
• The size of WBCs is 12 to 17 µm in Diameter and about three times RBCs.
• WBCs do not have any Fixed shape, it may be circular, rhomboid, or any other shape.

A 2007 survey by the Ministry of Women and Child Development showed that 53% of children in India had been sexually abused. 

Important Points The Protection of Children against Sexual Offences Act (POCSO) was passed by both houses of Parliament on May 22, 2012.  

• It came into effect on Children’s Day, November 14, 2012.
• Salient Feature of POCSO- 
  • It is gender-neutral.
  • It makes the reporting of abuse mandatory.
  • It makes the recording of sexual abuse mandatory.
  • It lists all known types of sexual offences towards minors.
  • It provides for the protection of minors during the judicial process.

From the above, it is clear that the Protection of Children against Sexual Offences Act (POCSO) came into effect on Children’s Day, November 14, 2012.

The correct answer is Copper.

Key Points

• Conductor of electricity
  • In physics and electrical engineering, a conductor is an object or type of material that allows the flow of charge in one or more directions.
  • Materials made of metal are common electrical conductors. 
  • Copper is considered to be a conductor because it conducts the electron current or flow of electrons fairly easily. Most metals are considered to be good conductors of electrical current. Copper is just one of the more popular materials that are used for conductors. Hence, Option 4 is correct.
  • If you have to define the meaning of electrical conductors in the simplest way, they are materials that allow electricity to flow through them easily.
  • If we compare two types of material and the first one allows better flow of electricity through it, then that material is said to be a good conductor of electricity.
  • An electrical conductor allows the electric charges to easily flow through them. The property of conductors to conduct electricity is called conductivity.
  • Such materials offer less opposition or resistance to the flow of charges.
  • Conducting materials allow easy charge transfer because of the free movement of electrons through them.

Additional Information

• • Some examples of conductors of electricity are
    • Copper
    • Aluminum
    • Silver
    • Gold
    • Graphite
    • Platinum
    • Water
    • People

The correct answer is Daya Bai.

Key Points 

• Daya Bai-
  • She was born in Dehra village, Alwar.
  • She was the disciple of Charandas ji.
  • The Daya Bodh and Vinaya Malika texts were written by her.

Additional Information 

• Meera Bai was a disciple of Sant Raidas Ji, Tika Ra Govinda, Narsi Mehta Ri Hundi, Rukmani Mangal, and Meera Padvaliya were written by her.
• Ratan Kumari Jhali was the disciple of Raidas Ji and was Mirabai's mother-in-law.
• Sahajo Bai was the disciple of Charandas Ji.
  • Sahaj Prakash Granth was written by her.

The correct answer is connective.

• Blood is a type of connective tissue. 

Key Points

• ​Connective tissue
  • This is a kind of biological tissue that supports, connects, or separates different types of tissues and organs of the body.
  • Examples- Tendons, ligaments, cartilage, bone, blood.
• Blood has a fluid (liquid) matrix called plasma, in which red blood corpuscles (RBCs), white blood corpuscles (WBCs), and platelets are suspended.
  • The plasma contains proteins, salts, and hormones.
  • Blood flows and transports gases, digested food, hormones, and waste materials to different parts of the body.

Additional Information

• Epithelial tissue:
  • The epithelial tissues are formed by cells that cover the organ surface such as the surface of the skin, the airways, the reproductive tract, and the inner lining of the digestive tract.
• Muscular tissues:
  • Muscular tissue is a soft tissue that composes muscles.
  • Skeletal muscle (voluntary muscles), cardiac muscle (involuntary muscles) are examples of it.
• Nervous tissue:
  • The main components of the nervous system are the brain, spinal cord, and nerves which regulate and control body functions.
  • It is made up of neurons that have important functions in the nervous system.