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Asked/Added Questions From NCERT: Geography


Question 1. Asked on :19 March 2022:01:54:27 AM

 Based on geology water quality nexus, discuss the likelihood or otherwise for groundwater use. Use a Ghanaian coastal area as a case study

-Added by Lyde Allo Geography » Underground Water

Answer by: Shruti Srivastva

Shruti Srivastva

 This work presents an assessment of the chemico-physical and microbial quality of water samples from hand-dug wells in the shallow aquifer of three communities neighbouring the University of Cape Coast, Ghana. Sanitary risk inspection was undertaken at each well location and the physical parameters including electrical conductivity, pH, Dissolved Oxygen (DO) and etc. were measured in situ via probes. Microbial groundwater quality was analysed using membrane filtration method. Samples of water were analysed for the pollution indicator anions including chloride and nitrate. In addition, the possible persistence of bacteria in groundwater environments in the absence of predator organisms were studied and results fitted with exponential, second-order polynomial and linear distribution models.

Sanitary risk inspection and microbial quality results indicate that all the wells were at risk and polluted with total coliforms from on-site sanitation. Twenty-five percent (7 out of 28) of the wells recorded DO concentration within acceptable limits of drinking water standards (> 5 mg/L). Average chloride concentration, 360.5 mg/L (range: 46 mg/L to 844 mg/L) and average electrical conductivity value of 1.5 mS/cm (range: 213 μS/cm to 2.7 mS/cm) were both higher than WHO recommended limits. Acidic conditions (pH < 6.5) were observed in water samples, indicating mineralisation of the aquifer. The high EC values and chloride content in groundwater were attributable to dry atmospheric aerosol deposition and possible mineral dissolution in the aquifer. Bacteria re-growth experiment results indicate that second-order polynomial distribution best describes bacteria inactivation rates in the absence of antagonist predators in our work. Extrapolation of time for complete inactivation of bacteria under groundwater environment ranged from 0.1 to 4 years indicating bacteria can persist in aquifers for long period of time. It was concluded that all the wells are at risk of pollution and polluted with faecal matter and atmospheric aerosols

-Answered by Shruti Srivastva On 23 May 2022:05:01:06 PM


Question 2. Asked on :24 July 2021:11:14:08 AM

कन्याकुमारी और कश्मीर में दिन-रात की अवधि में अंतर क्यों है? 

-Added by Master Mind Geography » भारत-आकार और स्थिति

Answer by: Master Mind

Master Mind

भूमध्य रेखा पर दिन और रात लगभग उसी अवधि के होते हैं। कन्याकुमारी भूमध्य रेखा के करीब 8 डिग्री 4' N पर है, दिन-रात का अंतर शायद ही कभी एक घंटा होता है, और इसलिए, कन्याकुमारी में दिन और रात की अवधि शायद ही महसूस होती है। दूसरी ओर, जैसे ही हम भूमध्य रेखा से ध्रुवों तक चले जाते हैं, दिन और रात की अवधि में भिन्नताएं अधिक हो जाती हैं। कश्मीर भूमध्य रेखा से 30 डिग्री से अधिक दूर है और इसलिए दिन और रात की अवधि में अंतर और अधिक है और हम उस अंतर को महसूस करते हैं। जबकि दोनों में घड़ी के समय का कोई अंतराल नहीं है |

-Answered by Master Mind On 24 July 2021:11:18:17 AM


Question 3. Asked on :12 April 2021:03:43:02 PM

Why quarrying can become in major environmental concern?

-Added by Master Purushottam Geography » Mineral And Power Resources

Answer by: Master Purushottam

Master Purushottam

 After quarrying, pits are not convered so they may environmental hazards.

-Answered by Master Purushottam On 12 April 2021:03:57:24 PM


Question 4. Asked on :12 April 2021:03:31:57 PM

 Why most industries are uncentrated around coal mines?

-Added by Master Purushottam Geography » Mineral And Power Resources

Answer by: Master Purushottam

Master Purushottam

 Presence of coal mines around industries reduces the cost of transportation and also ensure easy avaialbilty of fuel.

-Answered by Master Purushottam On 12 April 2021:03:58:13 PM


Question 5. Asked on :12 April 2021:03:30:44 PM

 Why petrdeum is refused to as "black gold coalmines"?

-Added by Master Purushottam Geography » Mineral And Power Resources

Answer by: Master Purushottam

Master Purushottam

 petroleum is a very valuable fossil fuel It is used for running all machineries transport vehicles from a bicycle to an aeroplane.

-Answered by Master Purushottam On 12 April 2021:04:09:46 PM


Question 6. Asked on :12 April 2021:03:29:55 PM

 Why environment aspects must be carefully  cooked into before building huge dams.

-Added by Master Purushottam Geography » Mineral And Power Resources

Answer by: Master Purushottam

Master Purushottam

 Building huge dams cause distabilisation of the natural habitates of plants and animals living in the area. These environmental aspects should be looked into before building dams.

-Answered by Master Purushottam On 12 April 2021:04:06:17 PM


Question 7. Asked on :12 April 2021:03:28:07 PM

 Give five ways in which you can save energy at home.

-Added by Master Purushottam Geography » Mineral And Power Resources

Answer by: Master Purushottam

Master Purushottam

 i) promoting the use of the solar  energy as much as possible. 

ii) using biogas as cooking fuel.

iii) drying clothes in the sunlight instead of electric dryers.

iv) avioding measure of electricity.

v) using presure cookers for cooking.

-Answered by Master Purushottam On 12 April 2021:04:11:04 PM


Question 8. Asked on :12 April 2021:03:27:29 PM

 Which source of energy would you suggest for arid regions?

-Added by Master Purushottam Geography » Mineral And Power Resources

Answer by: Shruti Srivastva

Shruti Srivastva

 Energy.


-Answered by Shruti Srivastva On 13 April 2021:12:23:51 PM

Answer by: Master Purushottam

Master Purushottam

 Energy.

-Answered by Master Purushottam On 12 April 2021:04:13:28 PM


Question 9. Asked on :12 April 2021:03:26:30 PM

 Which source of energy you suggest for coastal areas?

-Added by Master Purushottam Geography » Mineral And Power Resources

Answer by: Shruti Srivastva

Shruti Srivastva

 Wind and Tindal energy.

-Answered by Shruti Srivastva On 13 April 2021:12:24:21 PM

Answer by: Master Purushottam

Master Purushottam

 Wind energy and Tidal energy.

-Answered by Master Purushottam On 12 April 2021:04:14:09 PM


Question 10. Asked on :12 April 2021:03:23:50 PM

 Which resource of energy would you suggest for rural area?

-Added by Master Purushottam Geography » Mineral And Power Resources

Answer by: Shruti Srivastva

Shruti Srivastva

Solar and Wind energy.

-Answered by Shruti Srivastva On 13 April 2021:12:25:44 PM

Answer by: Master Purushottam

Master Purushottam

 Solar energy and wind energy.

-Answered by Master Purushottam On 12 April 2021:04:15:33 PM


 

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