For least effect on the water table, the tube wells must be dug one in every (A) 0.5 sq km (B) 0.75 sq km (C) 1.0 sq km (D) 1.5 sq km

For least effect on the water table, the tube wells must be dug one in every
(A) 0.5 sq km
(B) 0.75 sq km
(C) 1.0 sq km
(D) 1.5 sq km
by

1 Answer

Answer :

(D) 1.5 sq km
by

Related questions

Water to the consumers may be supplied from (A) Infiltration galleries connected to sump well (B) Infiltration well dug out on the banks of rivers (C) Ranney wells sunk to the water level (D) All the above

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In this method of irrigation (Tube wells)...... a. The ground should be hard should be available. c. The water table should be low rainfall. b. Cheap hydroelectric power d. The area must experience scanty

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The sum of the interior angles of a geometrical figure laid on the surface of the earth differs from that of the corresponding plane figure only to the extent of one second for every (A) 100 sq. km of area (B) 150 sq. km of area (C) 200 sq. km of area (D) None of these

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The coefficients of permeability of soils of an unconfined aquifer and another confined aquifer were determined by pumping water from the wells and observing the effect of water table in two test wells at equal distances was found to be equal. The total height of confined aquifer H is given by (A) H = h2 - h1 (B) H = h1 - h2 (C) H = h2 + h1 (D) ½ (h1 + h2)

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The area of a drainage basin whose axial length is 100 km is 2500 sq. km. Its form factor is (A) 0.10 (B) 0.20 (C) 0.25 (D) 0.35

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If the axial length of a drainage basin is 35 km and its form factor is 0.2, the total area of the basin is (A) 205 sq. km. (B) 215 sq. km. (C) 225 sq. km. (D) 245 sq. km.

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Two observation wells penetrating into a confined aquifer are located 1500 m apart in the direction of flow. Heads of 50 m and 25 m are indicated at these two observation wells. If the coefficient of permeability for the aquifer is 30 m/day and its porosity is 0.25, the time of travel of an inert tracer from one well to another is (a) 75 days (b) 750 days (c) 1200 days (d) 3000 days

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What is the total area of Azad Kashmir? A. 13297 Sq Km B. 13493 Sq Km C. 13496 Sq Km D. 13460 Sq Km

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What is the total area of Azad Kashmir? A. 13297 Sq Km B. 13493 Sq Km C. 13496 Sq Km D. 13460 Sq Km

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Last Answer : ANSWER: A

According to 1998 census the density of population per Sq. Km in FATA is: A. 98 Persons per Sq. Km B. 115 Persons per Sq. Km C. 132 Persons per Sq. Km D. 157 Persons per Sq. Km

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Last Answer : ANSWER: C

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Last Answer : ANSWER: A

According to 1998 census the density of population in Khyber Pakhtunkhwa Province is: A. 187 Persons per Sq. Km B. 254 Persons per Sq. Km C. 235 Persons per Sq. Km D. 318 Persons per Sq. Km

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Last Answer : ANSWER: B

The density of population in Pakistan according to 1998 census was: A. 120 Persons per sq. km B. 132 Persons per sq. km C. 157 Persons per sq. km D. 164 Persons per sq. km

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Last Answer : ANSWER: D

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Sex ratio refers to number of woman – (1) per sq. km. in relation to males (2) per 1000 males (3) per state in relation to males (4) and number of men in an area

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Total geographical area of India is (A) 328.9 Mha (B) 328.9 ha (C) 328.9 sq.km (D) 328.9 Mile

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Water supply through pipelines and tube wells to farm is known as a. fertilization b. hydration c. irrigation d. pollination

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In which two ways are tube-wells better than ordinary wells as a form of irrigation ? -Geography

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(i) Mention two ways in which tube-vsells are better than ordinary wells as a form of irrigation. -Geography

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Name two states in which tube wells are extensively used. Give a reason to explain its importance as a source of irrigation. -Geography

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Give two advantages and one disadvantage that tube wells have over surface wells. -Geography

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