Question Discussion & Solution

The correct answer is option 4, i.e. Ocean, snow and rain, underground water.

• Water resources available on earth are :
  • Freshwater: Glaciers, ice caps, and snow
  • Groundwater
  • Oceans, seas, streams, rivers, lakes, ponds
  • Wetlands- lagoons, swamps, and marshes
  • Precipitation- Rain, snow, and dew

Hence, from the above points, we can clearly infer that the resources of water on the earth are ocean, snow and rain, underground water.

Option(2) is correct.

Argument I: Yes, banning will reduce misuse: No, definitely not, banning mobile phones is not a solution as the Mobile phone is used for several purposes, for study, for payment, and more, So the argument I is not strong.

Argument II: No, it will have only a very limited impact: Moblie phone has several benefits, Online classes, useful videos, internet banking, etc. it is the very useful and very low impact of missuse.So, argument II is strong.

Hence, the correct answer is an option(2)i.e., Argument II is strong.

The correct answer is Shark — Tortoise — Otter.

Key Points

• Shark - Scientists believe that sharks came into existence around 400 million years ago. It is believed that they descended from a small leaf-shaped fish that had no eyes, bones on fins.
  • These fish then evolved into two main groups of fish that are found today.
  • Bony fish and cartilaginous fish which include shark and Chimaira.
  • Sharks are on the top of the marine food chain and are the only huge marine reptiles that exist today.
• Tortoise is believed to have existed for 250 million years.
  • They belong to the reptile species of the family Testudinidae.
  • Tortoise has a hard shell to protect from the outside environment. They are believed to have evolved from very large body sizes of around 100 kgs. They are among the longest-living land animals in the world.
• Otters are believed to have existed on earth for the past 23 million years.
  • They have evolved significantly and have gone through many adaptations to survive till this time.

Additional Information

• They have the ability to move both on water and land except sea otters. The rest of the otters have webbed feet which help them to move in the water.
• They have five toes which help them to move on land as well. It is believed that they were once land animals only but they ended up going in the water to be safe from predators.
• It is also believed that the food sources were available in limited quantities on land so they started hunting in water to survive.

The answer is Bundi.

Key Points

• Kanak Sagar is a historic lake at the Dugari town of the Bundi district in Rajasthan. 
  • It is famous for migrated birds hanging around the whole year like Pelicans, Black-tailed Godwit.
  • The Dugari fort is another attraction of this Kanak Sagar. 

Important Points

Major lakes of Rajasthan:

The correct answer is Spinning.

• The process of making thread from the fibre is called Spinning.

Key Points

• Spinning is the process done as a major part of the textile industries.
  • It is the manufacturing process for creating polymer fibres.
  • In the Spinning process, fibres are drawn and twisted from the cotton mass which brings them together to form a yarn
• Ring, Rotor, Air Jet are the different types of spinners used in the textile industries.

Additional Information

• Weaving is a method of textile production in which two different sets of yarns or threads are interlaced at right angles to form a fabric or cloth.
• Ginning is the process of removing the seeds and debris from cotton.