Question Discussion & Solution

Explanation:

Option 1 is correct, i.e. Anthracite.

• Anthracite, also called the hard coal is a highly metamorphosed form of coal.
• The calorific value of a substance is defined as the amount of heat released by a unit weight of a substance during complete combustion.
• Anthracite coal has the highest calorific value.

Anthracite is a type of coal that has the highest carbon content.

• Anthracite: 87-96%
• Bituminous: 45-86%
• Lignite: 25 - 35%

Extra information:​

• The most common volatile matter in coal is water, carbon dioxide, and sulfur dioxide.
•  Volatile matter is directly related to coal rank; as coal rank increases, volatile matter content decreases.
• Peat has the highest volatile matter.

Here, all except Nohkalikai are names of different diseases while ‘Nohkalikai’ is a waterfall in India.

In alphabet group there is difference of five except ‘QU’

E + 5 → J

O + 5 → T

Q + 4 → U

 M + 5 → R

The correct answer is Stapes.

• Stapes is the smallest bone in the human body.

Key Points

• The smallest bone in the human body is called stapes, located in the middle ear.
• The size of the staples is 3mm × 2.5 mm. 
• There are three bones in the middle ear, ​Malleus, Stapes, and Incus.
• ​The Stapes is the smallest of the three bones and it looks like a bell.​
• It is the innermost bone of our auditory ossicles in the middle ear, which are responsible for transmitting sound waves from the air outside to the fluid-filled labyrinth (cochlea).

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Additional Information

• The malleus or hammer is a hammer-shaped small bone or ossicle of the middle ear which connects with the incus and is attached to the inner surface of the eardrum.
  • The word is Latin for hammer or mallet.
  • It transmits the sound vibrations from the eardrum to the incus.
• The incus, also known as the “anvil,” is the middle of three small bones in the middle ear.
  • The incus transmits vibrations from the malleus to the stapes.
• In anatomy, the scapula (plural scapulae or scapulas), also known as the shoulder bone, shoulder blade, wing bone, or blade bone,
  • It is the bone that connects the humerus (upper arm bone) with the clavicle (collar bone).
• The rib cage is the arrangement of ribs attached to the vertebral column and sternum in the thorax of most vertebrates that encloses and protects vital organs such as the heart, lungs, and great vessels.
• The hip bone (os coxae, innominate bone, pelvic bone, or coxal bone) is a large irregular bone, constricted in the center and expanded above and below. In some vertebrates (including humans before puberty).
• it is composed of three parts: the ilium, ischium, and the pubis.

The correct answer is 740 meters.

• The approximate height of Dhosi hill above sea level is 740 meters.

Key Points

• Dhosi hill
  • ​Dhosi Hill is an extinct volcano.
  • It is standing alone at the northwest end of the Aravalli mountain range, of which it is a part, with height varying from about 345 to 470 meters from the surrounding land.
  • It is 740 meters from sea level. 
  • Dhosi Hill is located on the borders of Haryana and Rajasthan.

Additional Information

Top 3 Major mountain peaks of the Aravali Ranges of Rajasthan: