21. Gold Mines in India are located mainly at

1. 1. Kolar

   
   
   

   2. Raniganj

   
   
   

   3. Jadugoda

   
   
   

   4. Veeranam

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: A

   N/A

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22. The minimum forest cover to maintain ecological balance in the plains is

1. 1. 25%

   
   
   

   2. 33%

   
   
   

   3. 40%

   
   
   

   4. 50%

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: B

   N/A

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23. Which one of the following is the highest gravity dam

1. 1. Beas Dam

   
   
   

   2. Nangal Dam

   
   
   

   3. Bhakra Dam

   
   
   

   4. Hirakud Dam

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: C

   N/A

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24. The largest river of Peninsular India is

1. 1. Narmada

   
   
   

   2. Godavari

   
   
   

   3. Mahanadi

   
   
   

   4. Cauvery

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: B

   N/A

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25. Major coalfields of India are located in the river valley of

1. 1. Damodar

   
   
   

   2. Godavari

   
   
   

   3. Mahanadi

   
   
   

   4. Wardha

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: A

   N/A

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