Question Discussion & Solution

The correct answer is Esterification.

Key Points

• Esterification -
  • Acid + Alcohol = Ester
  • It is a chemical reaction that forms at least one ester.
  • Esters are produced when acids are heated with alcohol.

Additional Information

• Crystallization -
  • The process of obtaining a pure solid in the form of crystals from a saturated solution is called crystallization.
  • In crystallization, the solution is first evaporated to separate a solid from the solution.
  • When the solution becomes very concentrated, the solution is cooled slowly by stopping evaporation, causing crystals to form.
• Saponification -
  • The saponification of a fat or oil is done by using NaOH solution for the hot process.
  • Saponification to the sodium salt of myristic acid takes place with NaOH in water.
  • Soap is formed by a chemical reaction by heating an aqueous solution of vegetable oil or fat and caustic soda or caustic potash, and glycerol is liberated.

The correct answer is Cricket.

• Purushottam Lal Sukhadia, the father of former Rajasthan Chief Minister Mohan Lal Sukhadia, was associated with Cricket.

​Key Points

• Purushottam Lal Sukhadia​
  • Purushottam Lal Sukhadia, the father of former Rajasthan Chief Minister Mohan Lal Sukhadia, was associated with Cricket.
  • He played for the Bombay and Saurashtra teams.

Additional Information

• Mohan Lal Sukhadia
  • ​Mohan Lal Sukhadia was a politician.
  • He served as the Chief Minister of Rajasthan state for 17 years.
  • He became chief minister at the age of 38 and was responsible for bringing major reforms and developments in Rajasthan.
  • For this, he is still widely revered as the "founder of modern Rajasthan".

Table and chair both are made of wood

Similarly, shoes and belt both are made of Leather.

The correct answer is Mangifera indica.

Key Points

• Mangifera indica is the botanical name of mango.
  • In this name, Mangifera represents the genus while indica is a particular species.
• Scientific name
  • This system was given by Carolus Linnaeus.
  • Each name has two components – the Generic name and the specific epithet.
  • This system of providing a name with two components is called Binomial nomenclature.

Additional Information

• Monoon longifolium is an Asian small tree species in the family Annonaceae. Common names include false Ashoka, the Buddha tree, the Indian mast tree, and the Indian fir tree.
• Cocos nucifera is a Coconut tree. It is a tall tree that is native to tropical islands in the western Pacific. 
• Casuarina is a nitrogen-fixing tree through symbiotic relationship with an actinomycete called Frankia. Common names include coast sheoak, beach casuarina, beach oak, beach sheoak, beach pine, whistling tree, etc.

The correct answer is from gypsum.

Key Points

• Plaster of Paris is manufactured by heating gypsum at 423K or 150°C/300° F.
• On heating gypsum at 423 K, it loses water molecules and becomes calcium sulfate hemihydrate.
• This product is known as the plaster of Paris.

Additional Information 

• Characteristics of Gypsum Plaster:
  • Plaster of Paris is usually a white dry plaster powder.
  • It can be effectively worked with metal apparatuses or even abrasive sheets and can be shaped as per the requirements.
  • The strength of plaster of Paris is not as strong as other compounds and it often requires external support when a large amount is used.
  • It is often applied in the form of a quick-setting paste with water.