Question Discussion & Solution

The correct answer is Jodhpur.

• The 'Central Arid Zone Research Institute (ICAR)' of Rajasthan is located in Jodhpur.

Key Points

• Central Arid Zone Research Institute (ICAR):
  • It was established by the Government of India in 1959.
  • Its current director is Dr. O.P. Yadav.
  • This institute does arid zone research and development.  
  • It comes under the Indian Council of Agricultural Research.
  • ICAR comes under the aegis of the Ministry of Agriculture and Farmers Welfare.

TRUNCATE

• Is a DDL command hence it cannot be rolled back.
• It resets the identity of the table and locks that state of the table.
• Hence, Commit and Rollback will have no effect after TRUNCATE.

DELETE

• Is a DML command hence it can be rolled back
• It does not rest the identity of the table, it just locks the table row
• Hence Commit and Rollback can have effect depending on the lock techniques used.

Hence, it can be said that after the execution of ‘TRUNCATE’ operation, COMMIT, and ROLLBACK statements cannot be performed to retrieve the lost data, while ‘DELETE’ allows it.

It can also be said that after the execution of ‘DELETE’ operation, COMMIT and ROLLBACK statements can be performed to retrieve the lost data, while TRUNCATE does not allow it

NOTE

The correct answer is 14-Nov-2012.

• The POSCO Act was enacted on 14-Nov-2012.

Key Points

• The POSCO Act,2012:
  • The act is an acronym Protection Of Children from Sexual Offences Act.
  • The act was enacted on June 19, 2012.
  • It was enforced on November 14, 2012.
  • The act was enacted to protect children from offences of sexual assault, sexual harassment, and pornography and safeguard the interest and well-being of children.
  • According to the act, the definition of a child is any person below eighteen years of age.
  • It also defines different forms of sexual abuse which include penetrative and non-penetrative assault as well as sexual harassment and pornography.

The correct answer is Thymine and Cytosine.

Key Points

• The pyrimidines in DNA are C & T. In RNA, U replaces T.

• Cytosine (C) formula is C₄H₅N₃O and Thymine (T) formula is C₅H₆N₂O₂.

Additional Information

• Deoxyribonucleic acid, commonly known as DNA, is the hereditary complex molecule present in humans and almost all other organisms.
• The information in DNA (double helix structure) is stored as a code made up of four chemical bases: adenine (A), guanine (G), cytosine (C), and thymine (T).
  • DNA has two base pairs, A-T and G-C, attached to a sugar-phosphate backbone.
• DNA is a long molecule that contains our unique genetic code.
  • It holds the instructions for making all the proteins in our bodies and the function of living things.
• In the cell nucleus, the DNA (deoxyribonucleic acid) molecule is packaged into thread-like structures called chromosomes.
  • A chromosome (microscopic structure) is made up of DNA tightly coiled many times around proteins called histones that support its structure.
  • A chromosome has two arms - a p arm (short arm) and a q arm (long arm), joined in the location of the centromere.

• Watson and Crick Proposed the Double Helix structure of DNA with the two strands connected by hydrogen bonds.

Explanation:

• The metallic property of the elements of the periodic table decreases when we move across the group whereas it increases when we go down the group, as we go down the number of electrons increases and thereby their distance from the nucleus increases. 
• This increase causes them to shed more electrons and thereby have a greater electropositive or metallic character. 

Among the given compounds Na shows maximum Metallic character.