Play the quiz

5th Sample Papers

Water is a vital, colourless, odourless liquid essential for all life on Earth. About 70% of the earth is covered with water. It is found in the form of oceans, rivers, underground water etc. Water contains hydrogen and oxygen molecules (H2O) in the ratio of 2:1. It exists in 3 different states: solid (ice), liquid (water), and gas (water vapour). Clean water is tasteless, colourless, and odourless. Water is life itself because in our daily life, it is used for drinking, cleaning, agriculture, and various industrial processes. Our body cannot survive without water as each and every cell in our body needs water for their functions. 

Answer the following 

  1. Where can you find more water on the earth?
    Answer:     Oceans or marine source is the largest source of water.
  2. What is the consumable quantity of freshwater?
    Answer:    Only 2.5 – 2.75 % of freshwater is available for consumption.The remaining water is not fit for use.
  3. What are the sources of fresh water?
    Answer:
    Groundwater, and surface water (streams, rivers, lakes, reservoirs)
  4. Write your known sources of water?
    Answer:
    Rain is the major source. Others include ocean, Rivers, Wells, Ponds, canals,and dams.
  5. What are some important rivers of Karnataka?
    Answer:    Kaveri, Tungabhadra, Hemavati, Ghataprabha, Sharavati, Malaprabha, Kali River, Netravati, Bhadra, Tunga, river are some famous rivers in Karnataka.
  6. Write the names of any two water reservoirs in Karnataka.
    Answer:
    Almatti dam, Bhadra dam, Hemavati reservoir, Basava Sagara.
  7. What are some different types of wells?

Answer: Open wells, spring wells, ring wells, bored wells.

  1. Differentiate between pond and reservoir?
    Answer:

Pond

Reservoir

1. Pond is an artificial/ man-made low level portion of land.

2. It is easy to construct when compared to dam.

3. Its capacity of water is less

1. Dams are constructed across the rivers.

2. It needs a lot of resources and time to construct.

3. These are capable of storing water in large scale.
  1. Write the uses of ponds and Reservoirs?
    Answer:    Pond: Lawns and soil based plants require watering and It’s good to have some where for rainwater to go instead of being wasted. Reservoirs: Use to generate electricity, irrigation, human consumption, industrial use, agriculture.
  1. What are the reasons for water pollution?
    Answer:Water is polluted by the discharge of various industrial wastes, sewage from households, agricultural waste in the form of fertilizers and pesticides. In rivers and oceans, oil spills can also cause pollution. In a large scale leaks from underground storage tanks, mining activities, disposal of medical wastes, radioactive wastes can also contribute to pollution.
Additional Questions and Answers True of false statements.
  1. Pure water has no taste, smell, and color-True
  2. Water has oxygen and carbon dioxide – False
  3. Water has weight –True
  4. Oceans are the largest source of sweet water. False
  5. Water is found only in liquid form –False
  6. Water can be condensed into ice by cooling it –True
  7. Dams produce hydroelectricity-True
  8. Water has no shape but it occupies the shape of the container–True

Answers

  1. True
  2. False
  3. True
  4. False
  5. False
  6. True
  7. True
  8. True
Multiple choice Questions:
  1. The most sacred river of India is
  1. Ganga
  2. Yamuna
  3. Kaveri
  4. Godavari

 Answer: A. Ganga

  1. The substance in which solute is dissolved is called
  1. Solution
  2. Solute
  3. Solvent
  4. All of the above

Answer: C Solvent

Fill in the blanks:
  1. The two forms of well tube well and open well
  2. Rainwateris the major sources of water on the earth.
  3. Water is universal
  4. 2%of water a available on the earth is present in seas & oceans.
  5. Boiling point of water is 100 degree Celsius.
III. Answer the following Questions:
  1. What are some practices of worshipping water in India ?
    Answer:  Water is a holy liquid. Bathing in holy rivers like the Ganges, offering flowers and petals to water bodies, taking "theertham" (sacred water) to home are believed to reduce our sins. One of the largest sacred event like the Kumbh Mela is a place where people bathe in the Ganges to cleanse their sins;

  2. What is underground water table and which is the main source of underground water?
    Answer:    The water table is the imaginary line between the saturated zone (where all pore spaces in the soil are filled with water) and the unsaturated zone (where air is present in the pore spaces). Rainwater is the major source of water on the earth.
  3. What are solutes, solvents and solution?

Answer: A solute is a substance that dissolves in a solvent to form a solution. The solvent is the substance that does the dissolving. A solution is a homogeneous mixture of two or more substances.

  1. Define oasis.
    Answer:    An oasis is an area made fertile by a source of freshwater in a dry area such as desert.
  2. What are some harmful effects of water pollution?

Answer: Contaminated water can cause diseases like cholera, dysentery, and typhoid. It can destroy aquatic and wildlife. Water pollution can also harm the entire atmosphere and hinder the growth of plants and algae.