Topic outline

    • Drainage

      Q1. Fill in the blanks.

                               i.        The area drained by a single river system is called a drainage basin.

                              ii.        The world’s largest drainage basin is of the Amazon river.

                             iii.        Most of the Himalayan rivers are perennial.

                             iv.        A river alongwith its tributaries may be called a river system.

                              v.        The Brahmaputra rises in Tibet east of Mansarowar lake very close to the sources of the Indus and the Satluj.

                             vi.        The radial pattern develops when streams flow in different directions from a central peak or dome like structure.

               vii.        The activities of Ganga Action Plan (GAP) phase-I, initiated in 1985, were declared closed on 31st March 2000.

               viii.        Brahmaputra is known as the Tsang Po in Tibet and Jamuna in Bangladesh.


      Q2. Choose the right answer from the four alternatives given below.
          i. In which of the following states is the Wular lake located?
             (a) Radial        (c) Centrifugal
             (b) Dendritic    (d) Trellis

          Ans. (b) Dendritic   


          ii. In which of the following states is the Wular lake located?
             (a) Rajasthan       (c) Punjab
             (b) Uttar Pradesh  (d) Jammu and Kashmir

          Ans. (d) Jammu and Kashmir


          iii. The river Narmada has its source at
             (a) Satpura         (c) Amarkantak
             (b) Brahmagiri     (d) Slopes of the Western Ghats

          Ans. (c) Amarkantak


          iv. Which one of the following lakes is a salt water lake?
             (a) Sambhar     (c) Wular
             (b) Dal             (d) Gobind Sagar

          Ans. (a) Sambhar    


           v. Which one of the following is the longest river of the Peninsular India?
             (a) Narmada    (c) Godavari
             (b) Krishna      (d) Mahanadi

          Ans.  (c) Godavari


           vi. Which one amongst the following rivers flows through a rift valley?
             (a) Mahanadi        (c) Krishna
             (b) Tungabhadra   (d) Tapi

          Ans. (d) Tapi


      Q3. Name the biggest waterfall in India.

      Ans. Kunchikal waterfall


      Q4. Where did Ganga river named as ‘Meghna’?

      Ans. Bangladesh

      Q5. Which river of India is known as Meghna?

      Ans. Ganga River


      Q6. Which is the largest peninsular river in India?

      Ans. The Godavari is the largest Peninsular river.


      Q7. Zaskar and Nubra are important tributaries of which river?

      Ans. River Indus


      Q8. What is called river system?

      Ans. A river along with its tributaries is called a river system.


      Q9. What does NRCP stand for?

      Ans. NRCP stands for National River Conservation Plan.


      Q10. Which is the largest river basin in India?

      Ans. The Ganga river basin is the largest river basin in India.

      Q11. Which is the world’s largest and fastest growing delta?

      Ans. The Sundarban Delta is the world’s largest and fastest growing delta.

      Q12. Which rivers rise from Nepal Himalaya?

      Ans. The Ghaghara, the Gandak and the Kosi rise in the Nepal Himalaya.


      Q13. What is the total length of Indus river?

      Ans. The total length of Indus river is 2900km.


      Q14. Which drainage basin largest among peninsular rivers?

      Ans. The Godavari Basin is the largest among peninsular rivers.


      Q15. Which is the largest tributary of river Ganga?

      Ans. The Ghaghara river is the largest tributary of river Ganga.


      Q16. Which two Peninsular rivers flow through trough?

      Ans. The Narmada and the Tapi are the two Peninsular rivers, which flow through trough.