Question Discussion & Solution

The correct answer is Comodo.

• Comodo is a firewall software, used to protect information from an unsecured public network.

Key Points

• A Database Management System (DBMS) is software designed to store, modify, and manage data in a database.
  • Examples of DBMS are SQL Server, My SQL, Oracle, MS Access, File Maker, Bigtable.
• A database is a data structure that stores organized information.
• The telephone directory is a good example of a database.
  • SQL stands for Structured Query Language.
    • It was designed by Donald D. Chamberlin and Raymond F. Boyce.
  • Oracle Database is a multi-model database management system produced by Oracle Corporation.
  • MySQL is  an open-source relational database management system.
    • Developer: Oracle Cor  poration.

The correct answer is 7.

Key Points

• The pH value of salts of strong acid and strong base is 7.
  • The salts are from a strong acid and strong base do not hydrolyze and the resulting salt pH will remain 7.
  • The anion in the salt form's strong base does not attract the H+ from the water.

Additional Information

• Salt of a strong acid and a weak base is acidic with a pH value less than 7 because acid is strong which retains the pH value less than 7.
• Salt of a weak acid and strong base is basic with a pH value of more than 7 because the base is strong hence pH of the whole solution will be more than 7.
• Salt of a strong acid and strong base is neutral because both are strong and cancels strong effects of each other, the pH will be 7.

The logic followed here is:-

The first two words are antonyms of each other.

'Always' is antonym of 'Never'.

Similarly,

The fourth word should be the antonym of the third word.

'Down' is antonym of 'Up'.

So, Never : Always :: Up : Down.

Hence, the correct answer is "Down".

Key Points

• Microbes belong to diverse organisms – bacteria, fungi, protozoa, viruses.
• Microbes influence man's life in several ways- they are found in clothes, jams, shoes, dead wood, food products, soil, etc.
• Spore Formation is a method in asexual reproduction.
• Spore formation can be seen in the bread mold / Rhizopus.
• The presence of sugar and carbohydrate on bread provides proper conditions for spore formation. 

Rhizopus is the correct option. 

Additional Information

• Yeast is used as a fermentation agent in the bakery (bread industry) and brewery (wine industry). So, Saccharomyces cerevisiae is also called “Baker’s yeast”.
• Wart disease is caused by the fungus Synchytrium endobioticum. 
• Aspergillus is a Fungus genus that belongs to the class Ascomycetes or the sac fungi.

Bahlul Lodhi was the founder of the Lodhi Dynasty in 1451. By the end of the 15th-century Bahlul Lodi firmly established the Lodi dynasty at Delhi. He succeeded in bringing a large area of North India under his control. After his death, his son Sikandar Lodi succeeded him to the throne.

• In the sixteenth century the Lodi Empire, under Sultan Sikandar Lodi, in North India reached its zenith.
• The annexation of Dholpur paved the way for the expansion of Afghan rule in the regions of Rajputana and Malwa. The forts of Narwar and Chanderi were annexed while the Khanzada of Nagaur acknowledged the suzerainty of the Lodi Sultan in 1510-11.
• In short, the whole of North India, from Punjab in the northwest to Saran and Champaran in north Bihar in the east, and Chanderi to the south of Delhi were brought under the Lodi rule.
• Unlike his father, Sultan Ibrahim Lodi had to face the hostility of the 108 Political Structures Afghan nobility soon after his accession to the throne in 1517.
• He found himself surrounded by powerful nobles bent upon weakening the center to gain an upper hand for themselves. His father had to fight against his brothers and relatives and was supported by the nobles who wanted to replace the princes in the resourceful provinces. Upon the death of Sultan Sikandar Lodhi, the nobles decided to divide the Empire between Sultan Ibrahim Lodi and his younger brother Prince Jalal Khan Lodi, the governor of Kalpi.

Hint

The rulers of Delhi: