Question Discussion & Solution

The correct answer is the stem.

Key Points

• Jute fibers are the bast fibers, generally soft and shiny.
• Jute is a natural fibre.
• Jute fiber consists of plant material cellulose and lignin.
• The jute fibrous are separated from the stem by using the following process: 
• The process includes three steps:
  • Retting
  • Stripping
  • Picking 
• Retting means soaked in water. In this process, the stem of jute plants is taken and made into bundles.
• These bundles are immersed in slow-running water, so the bundle gets wetted.
• Stripping process - In this process the non-fibrous thing is separated from the bundles. This process is done by hand.
• Picking process - After stripping the workers picked the fibrous from the mass of the stem. So, jute fiber is obtained from the stem of the jute plant. Hence, Option 4 is correct.
• The wetting process is of two types:
  • Ribbon wetting
  • Stem wetting After wetting the stripping process is done.

​ 

• Bast fibers are the fibers extracted from the past which surround the stem.
• Bast is also known as phloem.
• Jute is also called golden fiber due to its golden color and high economical value.
• It is a biodegradable and recyclable fiber. Jute fibers are used to make mats, twins and ropes, gunny sacks, and bags. Jute fiber has high tensile strength, smooth luster, and is silky and shiny.
• The main source of jute fibre is Corchorus olitorius.

India has three distinct crop seasons in the northern and interior parts of the country, namely Kharif, Rabi, and Zaid.

Important Points

Lets' look at the cropping season of India:

• The Kharif season (June-September) largely coincides with Southwest Monsoon under which the cultivation of tropical crops are possible.
  • Major Crops- Rice, Cotton, Jute, Jowar, Bajra, and Tur.
• The Rabi season (October-March) has low-temperature conditions which help in the cultivation of temperate and subtropical crops.
  • Major Crops- Wheat, Gram, and Mustard.
• The Zaid season (April-June) is a short duration summer cropping season beginning after harvesting Rabi crops.
  • Major Crops- Watermelons, Cucumbers, Vegetables, and Fodder Crops.

From the above, we can conclude that Wheat is not a Kharif crop as it is grown in the Rabi season.

The correct answer is Femur.

Key Points

• The largest bone in the human body is the femur, the thighbone.
• It is the largest, longest, and strongest bone in the human body.
• The femur runs from the keen to the hip.
• The Femur or thigh bone is the largest and heaviest bone in the human body.
• At the proximal end of the Femur, there is a rounded prominence which is called the Head of the Femur.
• The femur runs from the keen to the hip.
• It carries all the upper body weight.
• The other parts of the leg are the tibia, femur, fibula, and keep cap also known as patella.

Additional Information

• The human skeleton is made up of 206 bones, including bones of the
  • Skull:  including the jaw bone (mandible, maxilla)
  • Spine: cervical, thoracic and lumbar vertebrae, sacrum and tailbone (coccyx)
  • Chest: ribs and breastbone (sternum)
  • Arms: the shoulder blade (scapula), collar bone (clavicle), radius, humerus and ulna
  • Hands: wrist bones (carpals), metacarpals and phalanges
  • Pelvis: hip bones
  • Legs: the thigh bone (femur), the kneecap (patella), shin bone (tibia) and fibula
  • Feet: tarsals, metatarsals, and phalanges.

The correct answer is Aravali.

• Aravali range forms the main water area for Rajasthan.

Key Points

• Aravali range​
  • The Aravallis of Northwestern India, one of the oldest fold mountains of the world, now form residual mountains with an elevation of 300m. to 900m.
  • They stretch for a distance of 800 km from Himmatnagar in Gujarat to Delhi, spanning Haryana, Rajasthan, Gujarat, and Delhi, the 692 kilometres (km).
  • The Aravallis act as a barrier between the fertile plains in the east and the sandy desert in the west.
  • Historically, it is said that the Aravalli range checked the spread of the Thar desert towards the Indo-Gangetic plains, serving as a catchment of rivers and plains.
  • Thus Aravali range forms the main water area for Rajasthan.

​Additional Information

•  Aravali range formation
  • ​These are fold mountains of which rocks are formed primarily of the folded crust when two convergent plates move towards each other by the process called orogenic movement.
  • The Aravallis date back to millions of years when a pre-Indian sub-continent collided with the mainland Eurasian Plate.
  • Carbon dating has shown that copper and other metals mined in the ranges date back to at least the 5th century BC.

The correct answer is "option 2"

CONCEPT:

Structure in C is a user-defined data type that is used to store the collection of different data types.

The total size of the structure is the sum of the size of every data member.

Union is a user-defined data type that is used to store different data types in the same memory location.

The total size of the union is the size of the largest data member.
 

EXPLANATION:

Given the size of short, float and long is 2 bytes, 4 bytes, and 8 bytes, respectively.

Therefore,

Size of Structure → size of ( short s[5] ) + size of Union  

Here, Size of Union = 8 bytes   { largest data member is long }.

Size of short s[5] → 2×5 → 10 bytes

Size of Structure → 10+8 →18 bytes.

Hence, the correct answer is "option 2".