Question Discussion & Solution

The correct answer is Banas River.

• Banas River is known as "Forest's Hope".

Key Points

• Banas River
  • The Banas is a river that lies entirely within the state of Rajasthan.
  • It is a tributary of the Chambal River, itself a tributary of the Yamuna, which in turn merges into the Ganga.
  • Banas river originates in the Khamnor Hills of the Aravalli Range, near Kumbhalgarh in Rajsamand.
  • The name "Banaas" literally translates as "forest-hope" (Ban-aas) meaning "Hope-of-the-forest" or 'Van Ki Aasha.' 

Additional Information 

• Bedach River
  • The Berach River, a tributary of the Banas River.
• Bandi River
  • ​The Bandi is a tributary of the Luni River in the Pali district of Rajasthan state.
  • It merged in the Luni river in the Jodhpur district. 
• Arvari
  • ​The Arvari River is a small river flowing through the Alwar District of Rajasthan.

The correct answer is Cancer.

Concept: 

Infectious diseases:

• Infectious disease are diseases caused by bacteria, fungi, viruses, or parasites.
• Infectious diseases are transmitted by infectious agents.
• Infectious disease is spread by humans, plants, and insects. 
• Agents that spread pathogens or pass them on are known as vectors or disease intermediaries.

Explanation:

• Cancer is not an infectious disease. 
• Cancer cannot be passed from one person to another by breathing the same air, sharing a toothbrush, touching.
• Cancer is a disorder in which cell growth is uncontrolled.
• Changes in genes that control how our cells function, particularly how they grow and divide, cause cancer.
• Accelerating cell division rates or inhibiting normal control can result in gene mutations. 
• Cancer is sometimes caused by the genes we inherit from our parents.
• Cancer's Causes
  • Carcinogens such as tobacco, chemicals, alcohol, and ultraviolet radiation from the sun are among the leading causes of cancer.

Additional Information

• Cholera:
  • Cholera is a severe diarrheal infectious disease caused by Vibrio cholerae bacteria.
  • People who consume cholera-contaminated food or water may become ill.
  • The infection is frequently mild or without symptoms, but it can also be severe and life-threatening.
  • The disease's deadly effects are caused by a toxin produced by bacteria in the small intestine.
• TB (Tuberculosis):
  • Tuberculosis (TB) is an infectious disease caused by a Mycobacterium tuberculosis bacteria.
  • It was transmitted from person to person via microscopic droplets released into the air.
  • Usually bacteria attack the lungs, but tuberculosis bacteria can attack any part of the body, including the brain, kidney, and spine.
• Conjunctivitis: 
  • Conjunctivitis or pink eye is a viral disease that is caused by allergies or bacterial or viral infection.
  • It is the Inflammation or infection of the eyeball's outer membrane and the inner eyelid.
  • Conjunctivitis is highly contagious and is spread through contact with infected people's eye secretions

i) Shyam travels 5 km towards East and turns left and moves 6 km further.

ii) He then turns right and moves 9 km.

iii) Finally, he turns once again to his right and moves 6 km.

Drawing the Diagram as per the given information:

AB = 5 km

DE = BC = 9 km

Distance between the starting point and the final point = AB + BC = 5 + 9 = 14 km

Hence, the correct answer is "14 km".

Explanation:- 

• Oxidation is a chemical reaction in which oxygen is added to a substance or hydrogen is removed from the substance. The oxidizing agent is the chemical compound that provides oxygen or removes hydrogen from the reactants. Oxidizing agents are also known as Oxidant or Oxidizer. 
• Here, Aluminium is the only metal that forms a protective layer of its own oxide Al₂O₃. This Aluminium Oxide layer serves as a barrier and prevents the element Aluminium from further corrosion.

Additional Information

•  Gold (Au):- Gold is a noble metal, it belongs to group 11 and it is least reactive. It shows +1 and +3 oxidation states.
• Silver (Ag):-  It is a white lustrous element of group 11. Being a noble metal it is less reactive in nature. Silver is a good conductor of electricity.
• Aluminum (Al):- Aluminium is a metal from group 13, It is a light-weighted silvery metal with 3+ valency. Common Oxidation states shown by Aluminium is +1, +2, +3. 
• Iron (Fe):- Iron is a highly reactive metal, It reacts with the oxygen present in the air very easily and forms Iron oxides like FeO, Fe₂O_3, Therefore, Iron undergoes rusting

 .Hint :- Au, Ag, both are  less reactive in nature, Iron is highly reactive, whereas Al is reactive in nature but doesn't react with air due to the formation of Al₂O₃ 

Explanation:

• Bacteria are the sole members of the Kingdom Monera. They are the most abundant micro-organisms.
• On the basis of origin, bacteria can be divided into two types - Archaebacteria & Eubacteria

Archaebacteria:

• These bacteria are special since they live in some of the harshest habitats such as extreme salty areas (halophiles), hot springs (thermoacidophiles) and marshy areas (methanogens).
• Archaebacteria differ from other bacteria in having a different cell wall structure and this feature is responsible for their survival in extreme conditions.
• For example - Methanogens are present in the gut of several ruminant animals such as cows and buffaloes and they are responsible for the production of methane (biogas) from the dung of these animals.

Additional Information 

Eubacteria:

• There are thousands of different eubacteria or ‘true bacteria’.
• They are characterised by the presence of a rigid cell wall, and if motile, a flagellum.
• The Eubacteria can be both autotrophic & heterotrophic.