Question Discussion & Solution

Copper is a type of metal similarly, rupee is a currency of India.

Binary semaphores are also known as Mutex locks, as they are locks that provide mutual exclusion.

Explanation:-

Binary semaphores:- This is also known as mutex lock. It can have only two values 0 and 1. Its value is initialized to 1. It is used to implement the solution of critical section problems with multiple processes.

 Important PointsCounting semaphores:- Its value can range over an unrestricted domain. It is used to control access to a resource that has multiple instances

Using mutex:- A mutex provides mutual exclusion, either producer or consumer can have the key (mutex) and proceed with their work. 

Shared variable:- A semaphore is a shared variable that is used to implement mutual exclusion between system processes.
 Additional InformationSemaphore used:- Semaphores are typically used in one of two ways: To control access to a shared device between task. A Printer is a good example. You don'twant 2 tasks sent to the printer at once, so you create a binary semaphore to control printer access.

Concept-

• The stem is the ascending part of the axis bearing branches, leaves, flowers, and fruits.
• It develops from the plumule of the embryo of a germinating seed.
• The stem bears nodes and internodes. 
• The main function of the stem is spreading out branches bearing leaves, flowers, and fruits.
• It conducts water, minerals, and photosynthates. 

Explanation-

• Some stems perform the function of storage of food, support, protection, and of vegetative propagation. 
• The stem may not always be typically like what they are expected to be.
• They are modified to perform different functions.
• Underground stems of potato, ginger, turmeric, zaminkand, Colocasia are modified to store food in them.

Therefore turnip is not the stem.

Additional InformationTurnip

• Roots in some plants change their shape and structure and become modified to perform functions other than absorption and conduction of water and minerals.
• They are modified for support, storage of food, and respiration.
• Taproots of carrot, turnip, and adventitious roots of sweet potato, get swollen and store food.

The correct answer is Mohan Lal Sukhadia.

• Mohan Lal Sukhadia laid the foundation stone of Jakham Dam.

Key Points

• Jakham Dam
  • Jakham Dam is a dam located in Pratapgarh District.
  • It is located in Anooppura village of Pratapgarh Tehsil, 32 km from Dhariawad and 35 km from Pratapgarh town.
  • The dam is the main irrigation project of the area.
  • This dam is built on the Jakham river.
  • The Jakham dam's foundation was laid on 14 May 1968 by then chief minister Mohan Lal Sukhadia.

​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".

The correct answer is Hygrometer.

Key Points

• Hygrometer
  • A hygrometer is an instrument for measuring the relative humidity of the atmosphere.
  • The hygrometer was invented by Leonardo da Vinci.

Additional Information

• ​Barometer
  • A barometer is an instrument used to measure atmospheric pressure.
  • The barometer was invented by Torricelli.
• Hydrometer
  • A hydrometer is an instrument used to measure the specific gravity of liquids.
  • The hydrometer was invented by Nicholson.
• ​Anemometer
  • An anemometer is an instrument used to measure the velocity of wind and directions.
  • The anemometer was invented by Leon Alberti.