Two hill tops and 20 km apart are intervened by a third top . If the top most contour of the three hill tops are of the same value, state whether the line of sight AB (A) Passes clear of hill top C (B) Passes below the hill top C(C) Grazes the hill top C(D) None of these

Two hill tops and 20 km apart are intervened by a third top . If the top most contour of
the three hill tops are of the same value, state whether the line of sight AB
(A) Passes clear of hill top C
(B) Passes below the hill top C
(C) Grazes the hill top C
(D) None of these
by

1 Answer

Answer :

(B) Passes below the hill top C
by

Related questions

Contour lines of different elevations can unite to form one line, only in the case of (A) A vertical cliff (B) A saddle (C) A water shed line (D) A hill top

Description : Contour lines of different elevations can unite to form one line, only in the case of  (A) A vertical cliff  (B) A saddle  (C) A water shed line  (D) A hill top 

Last Answer : (A) A vertical cliff 

If L is the length of vehicles in metres, C is the clear distance between two consecutive vehicles (stopping sight distance), V is the speed of vehicles in km/hour, the maximum number N of vehicles/hour, is (A) N = 1000 V / (L + C) (B) N = (L + C) / 1000 V (C) N = 1000 L / (C + V) (D) N = 1000 C / (L + V)

Description : If L is the length of vehicles in metres, C is the clear distance between two consecutive vehicles (stopping sight distance), V is the speed of vehicles in km/hour, the maximum number N of vehicles/hour, is (A) N = 1000 V / (L + C ... ) / 1000 V (C) N = 1000 L / (C + V) (D) N = 1000 C / (L + V)

Last Answer : Answer: Option A

A strainer type well sunk through three previous layers intervened by three impervious aquicludes, draws water from (A) Top most pervious layer (B) Central pervious layer (C) Lowest pervious layer (D) All the pervious layer

Description : A strainer type well sunk through three previous layers intervened by three impervious aquicludes, draws water from (A) Top most pervious layer (B) Central pervious layer (C) Lowest pervious layer (D) All the pervious layer

Last Answer : (D) All the pervious layers

When testing for blown fuses in a three-phase supply circuit to a motor, you should first ___________________. A. apply the megger across the tops of the line fuses B. apply an ammeter diagonally across the top of the first line fuse and the bottom of the third line fuse C. apply the voltage tester across the bottoms of the line fuses D. ensure the circuit is de-energized, and then use a continuity tester

Description : When testing for blown fuses in a three-phase supply circuit to a motor, you should first ___________________. A. apply the megger across the tops of the line fuses B. apply an ammeter diagonally across ... of the line fuses D. ensure the circuit is de-energized, and then use a continuity tester

Last Answer : Answer: D

A closed contour line with two or more higher contours inside it will represent a (a) Depression (b) Hill (c) Cave (d) Well

Description : A closed contour line with two or more higher contours inside it will represent a (a) Depression (b) Hill (c) Cave (d) Well

Last Answer : (b) Hill

While measuring a chain line between two stations and intervened by a raised ground (A) Vision gets obstructed (B) Chaining gets obstructed (C) Both vision and chaining get obstructed (D) All the above

Description : While measuring a chain line between two stations and intervened by a raised ground (A) Vision gets obstructed (B) Chaining gets obstructed (C) Both vision and chaining get obstructed (D) All the above

Last Answer : (A) Vision gets obstructed

An object on the top of a hill 100 m high is just visible above the horizon from a station at sea level. The distance between the station and the object is : (a) 38.53 km (b) 3.853 km (c) 3853 km (d) 385.3 km

Description : An object on the top of a hill 100 m high is just visible above the horizon from a station at sea level. The distance between the station and the object is : (a) 38.53 km (b) 3.853 km (c) 3853 km (d) 385.3 km

Last Answer : (a) 38.53 km

Location of contour gradient for a high way is best set out from (A) Ridge down the hill (B) Saddle down the hill (C) Bottom to the ridge (D) Bottom to the saddle

Description : Location of contour gradient for a high way is best set out from (A) Ridge down the hill (B) Saddle down the hill (C) Bottom to the ridge (D) Bottom to the saddle

Last Answer : (B) Saddle down the hill

Select the correct statement. A) Contour interval on any map is kept constant. (B) Direct method of contouring is cheaper than indirect method. (C) Intervisibility of points on a contour map cannot be ascertained. (D) Slope of a hill cannot be determined with the help of contours.

Description : Select the correct statement. . A) Contour interval on any map is kept constant. (B) Direct method of contouring is cheaper than indirect method. (C) Intervisibility of points on a contour map cannot be ascertained. (D) Slope of a hill cannot be determined with the help of contours.

Last Answer : (A) Contour interval on any map is kept constant.

Draw neat sketch of contour for the following i)Hill ii) Valley iii)Gentle Slope iv) Ridge Line

Description : Draw neat sketch of contour for the following i)Hill ii) Valley iii)Gentle Slope iv) Ridge Line 

Last Answer : i)Hill ii) Valley iii)Gentle Slope iv) Ridge Line 

14. A siphon is used to connect two reservoirs at different levels intervened by a high ridge. A) True B) False

Description : 14. A siphon is used to connect two reservoirs at different levels intervened by a high ridge. A) True B) False

Last Answer : A

To orient a plane table at a point roughly south of the mid-point of two inaccessible conical hill stations and in the plains, a point is selected in line with AB and table is oriented at by bringing ab in line with AB. A ray is then drawn towards and at the table is oriented by back ray method. The orientation so obtained, is (A) Unique and correct (B) Incorrect (C) Manifold and correct (D) Not reliable

Description : To orient a plane table at a point roughly south of the mid-point of two inaccessible conical hill stations and in the plains, a point is selected in line with AB and table is oriented at by bringing ab ... , is (A) Unique and correct (B) Incorrect (C) Manifold and correct (D) Not reliable

Last Answer : (C) Manifold and correct

A dumpy level was set up at the midpoint between two pegs A and B, 50 m apart and the staff readings at and were 1.22 and 1.06. With the level set up at , the readings at and were 1.55 and 1.37. The collimation error per 100 m length of sight is (A) 0.02 m inclined upwards (B) 0.04 m inclined downwards (C) 0.04 m inclined upward (D) None of these

Description : A dumpy level was set up at the midpoint between two pegs A and B, 50 m apart and the staff  readings at and were 1.22 and 1.06. With the level set up at , the readings at  and were 1.55 and ... upwards  (B) 0.04 m inclined downwards  (C) 0.04 m inclined upward  (D) None of these

Last Answer : (B) 0.04 m inclined downwards 

Two trains are running at 40 km/hr and 20 km/hr respectively in the same direction. Fast train completely passes a man sitting in the slower train in 5 seconds. What is the length of the fast train? A.27 7/9 m B.28 m C.29 m D.30 2/7 m E.None of these

Description : Two trains are running at 40 km/hr and 20 km/hr respectively in the same direction. Fast train completely passes a man sitting in the slower train in 5 seconds. What is the length of the fast train? A.27 7/9 m B.28 m C.29 m D.30 2/7 m E.None of these 

Last Answer : Answer – A (27 7/9 m) Explanation – When SAME direction- MINUS Relative speed = (40-20) km/hr = [20 x 5/18] m/sec = [50/9] m/sec. Length of faster train = sxt=[50/9 x 5] m = 250/9 m = 27 7/9 m.

What is the expression or sentence contraction of a cow that grazes ?

Description : What is the expression or sentence contraction of a cow that grazes ?

Last Answer : The one who grazes the cows - the shepherd.

How to Treat Minor Cuts and Grazes In Children?

Description : How to Treat Minor Cuts and Grazes In Children?

Last Answer : Every child will fall over and get a cut or graze at some pointin their lives. Although you may have excellent children'shealthcare insurance, you can save yourself time, money and worryby treating ... down and carefully comfort them.-Step 2: Wash hands and assessWash your hands to avoid causing in

Which of the following statements correctly defines the term ‘Transhumance’? a. Economy that solely depends on animals b. Farming in which only one crop is cultivated by clearing hill tops c. Practice of growing crops on higher hill slopes in summers and foothills in winters d. Seasonal Migration of people with their animals up and down the mountains. e. None of the above

Description : Which of the following statements correctly defines the term Transhumance'? a. Economy that solely depends on animals b. Farming in which only one crop is cultivated by clearing hill tops c. Practice ... Seasonal Migration of people with their animals up and down the mountains. e. None of the above

Last Answer : d. Seasonal Migration of people with their animals up and down the mountains.

What are the VMC limits for Class B airspace? a. 8km flight visibility, clear of cloud and in sight of the surface b. 8km flight visibility, 1000ft vertically and 1500m horizontally from cloud c. 5km flight visibility, 1000ft vertically and 1500m horizontally from cloud d. The same as Class D

Description : What are the VMC limits for Class B airspace? a. 8km flight visibility, clear of cloud and in sight of the surface b. 8km flight visibility, 1000ft vertically and 1500m horizontally from cloud c. 5km flight visibility, 1000ft vertically and 1500m horizontally from cloud d. The same as Class D

Last Answer : d. The same as Class D

What are the VMC limits for Class B airspace? a. 8km flight visibility, clear of cloud and in sight of the surface b. 8km flight visibility, 1000ft vertically and 1500m horizontally from cloud c. 5km flight visibility, 1000ft vertically and 1500m horizontally from cloud d. The same as Class D

Description : What are the VMC limits for Class B airspace? a. 8km flight visibility, clear of cloud and in sight of the surface b. 8km flight visibility, 1000ft vertically and 1500m horizontally from ... . 5km flight visibility, 1000ft vertically and 1500m horizontally from cloud d. The same as Class D

Last Answer : d. The same as Class D

What is the maximum line-of-sight distance between a paging antenna 250 ft high and a pager receiver 3.5ft of the ground? A. 25 km B.25mi C. 70.73 km D. 70.73 mi

Description : What is the maximum line-of-sight distance between a paging antenna 250 ft high and a pager receiver 3.5ft of the ground? A. 25 km B.25mi C. 70.73 km D. 70.73 mi

Last Answer : B.25mi

Select the correct statement. (A) A contour is not necessarily a closed curve. B) A contour represents a ridge line if the concave side of lower value contour lies towards the higher value contour (C) Two contours of different elevations do not cross each other except in case of an overhanging cliff (D) All of the above statements are correct

Description : Select the correct statement. (A) A contour is not necessarily a closed curve. B) A contour represents a ridge line if the concave side of lower value contour lies towards the higher value contour ... each other except in case of an overhanging cliff (D) All of the above statements are correct

Last Answer : (C) Two contours of different elevations do not cross each other except in case of an overhanging clif

How will an oncoming aircraft on a line of constant bearing appear visually? a. There will be no relative movement and it will appear to be very small until seconds before the collision b. There will be no relative movement and it will appear to be very small until seconds before the aircraft passes close by c. There will be no relative movement and it will appear to be very small until seconds before the aircraft passes above d. There will be no relative movement and it will appear to be very small until seconds before the aircraft passes well clear

Description : How will an oncoming aircraft on a line of constant bearing appear visually? a. There will be no relative movement and it will appear to be very small until seconds before the collision b ... relative movement and it will appear to be very small until seconds before the aircraft passes well clear

Last Answer : a. There will be no relative movement and it will appear to be very small until seconds before the collision

How will an oncoming aircraft on a line of constant bearing appear visually? a. There will be no relative movement and it will appear to be very small until seconds before the collision b. There will be no relative movement and it will appear to be very small until seconds before the aircraft passes close by c. There will be no relative movement and it will appear to be very small until seconds before the aircraft passes above d. There will be no relative movement and it will appear to be very small until seconds before the aircraft passes well clear

Description : How will an oncoming aircraft on a line of constant bearingappear visually? a. There will be no relative movement and it will appear to be very small until seconds before the collision b. ... movement and it will appear to be very small until seconds before the aircraft passes well clear

Last Answer : a. There will be no relative movement and it will appear to be very small until seconds before the collision

How will an oncoming aircraft on a line of constant bearing appear visually? a. There will be no relative movement and it will appear to be very small until seconds before the collision b. There will be no relative movement and it will appear to be very small until seconds before the aircraft passes close by c. There will be no relative movement and it will appear to be very small until seconds before the aircraft passes above d. There will be no relative movement and it will appear to be very small until seconds before the aircraft passes well clear

Description : How will an oncoming aircraft on a line of constant bearing appear visually? a. There will be no relative movement and it will appear to be very small until seconds before the collision ... relative movement and it will appear to be very small until seconds before the aircraft passes well clear

Last Answer : a. There will be no relative movement and it will appear to be very small until seconds before the collision

Soil erosion on hill slopes can be checked by – (1) Afforestation (2) Terrace cultivation (3) Strip cropping (4) Contour ploughing

Description : Soil erosion on hill slopes can be checked by – (1) Afforestation (2) Terrace cultivation (3) Strip cropping (4) Contour ploughing

Last Answer : (2) Terrace cultivation Explanation: Terrace farming is a type of farming that was developed first by the Inca people. This method of farming uses "steps", called andenes that are built into the side of ... of water that would take plants with it and destroy the all of the crops on the hillside.

Soil erosion on hill slopes can be checked by (1) Afforestation (2) Terrace cultivation (3) Strip cropping (4) Contour ploughing

Description : Soil erosion on hill slopes can be checked by (1) Afforestation (2) Terrace cultivation (3) Strip cropping (4) Contour ploughing

Last Answer : Terrace cultivation

What do you think would have happened had the United States not intervened in Europe in the two World Wars?

Description : What do you think would have happened had the United States not intervened in Europe in the two World Wars?

Last Answer : Two words: Soviet Union.

Sluice valves in main water supplies (A) Are used to regulate the flow of water in pipes (B) Are spaced about 5 km apart (C) Are usually placed at the summits (D) All the above

Description : Sluice valves in main water supplies  (A) Are used to regulate the flow of water in pipes  (B) Are spaced about 5 km apart  (C) Are usually placed at the summits  (D) All the above 

Last Answer : (D) All the above 

Pick up the correct statement from the following (A) The contour lines having the same elevation cannot unite and continue as one line (B) A contour can not end abruptly, but must ultimately close itself not necessarily within the limits of map (C) The direction of steepest slope at a point on a contour is at right angles to the contour (D) All the above

Description : Pick up the correct statement from the following (A) The contour lines having the same elevation cannot unite and continue as one line (B) A contour can not end abruptly, but must ultimately close itself not ... slope at a point on a contour is at right angles to the contour (D) All the above

Last Answer : (D) All the above

Extra widening required at a horizontal curve on a single lane hill road of radius 80 m for a design speed of 50 km ph and for a vehicle with wheel base 6.0 m is (A) 0.225 m (B) 0.589 m (C) 1.250 m (D) None of these

Description : Extra widening required at a horizontal curve on a single lane hill road of radius 80 m for a design speed of 50 km ph and for a vehicle with wheel base 6.0 m is (A) 0.225 m (B) 0.589 m (C) 1.250 m (D) None of these

Last Answer : Answer: Option B

An exceptional grade may be provided upto 1 in 12 along hill roads, if the length does not exceed (A) 45 m per km(B) 60 m per km (C) 75 m per km (D) 90 m per km

Description : An exceptional grade may be provided upto 1 in 12 along hill roads, if the length does not exceed (A) 45 m per km (B) 60 m per km (C) 75 m per km (D) 90 m per km

Last Answer : Answer: Option B

If V is the design speed in km/hour and R is the radius of the curve of a hill road, the super￾elevation (A) e = V / 127 R (B) e = V² / 127 R (C) e = V ²/ 225 R (D) e = V / 225 R

Description : If V is the design speed in km/hour and R is the radius of the curve of a hill road, the super￾elevation (A) e = V / 127 R (B) e = V² / 127 R (C) e = V ²/ 225 R (D) e = V / 225 R

Last Answer : Answer: Option C

Two stations X and Y are 170 km apart on a straight line. One train starts from X at 6 a.m. and travels towards Y at 25 kmph. Another train starts from Y at 8 a.m. and travels towards X at a speed of 35 kmph. At what time will they meet? a) 11. 30 a.m b) 10.30 a.m c) 11 a.m d) 9 a.m e) 10 am

Description : Two stations X and Y are 170 km apart on a straight line. One train starts from X at 6 a.m. and travels towards Y at 25 kmph. Another train starts from Y at 8 a.m. and travels towards X at a speed of 35 kmph. At what time will they meet? a) 11. 30 a.m b) 10.30 a.m c) 11 a.m d) 9 a.m e) 10 am

Last Answer : e Suppose they meet z hours after 6 a.m. Distance covered by X in z hours = 25× z km. Distance covered by Y in (z - 2) hours = 35(z - 2) km. Therefore 25z + 35(z- 2) = 170 60z = 240 x = 4. So, they meet at 10 a.m.

Where is the retentive position on teeth according to the survey line: A. Below the height of contour B. Next to gingival margins

Description : Where is the retentive position on teeth according to the survey line: A. Below the height of contour B. Next to gingival margins

Last Answer : A. Below the height of contour

Four square table-tops of the same dimensions are shown below. Only the designs of their supports are different from each other. If a person stands upright on the red mark on each of the table, which of the tables will topple?

Description : Four square table-tops of the same dimensions are shown below. Only the designs of their supports are different from each other. If a person stands upright on the red mark on each of the table, which of the tables will topple?  

Last Answer : B C D

An aircraft flying over the sea between 4500ft and 9000ft AMSL and outside CAS. To continue under VFR the meteorological conditions must remain: a. 2000ft horizontally and 1000ft vertically from cloud with visibility of 8km b. 1500m horizontally and 1000ft vertically from cloud with visibility of 5km c. 1500m horizontally and 1000m vertically from cloud with visibility of 5km d. Clear of cloud and in sight of the surface with visibility of 5km

Description : An aircraft flying over the sea between 4500ft and 9000ft AMSL and outside CAS. To continue under VFR the meteorological conditions must remain: a. 2000ft horizontally and 1000ft vertically from cloud with ... visibility of 5km d. Clear of cloud and in sight of the surface with visibility of 5km

Last Answer : b. 1500m horizontally and 1000ft vertically from cloud with visibility of 5km

The difference of level between a point below the plane of sight and one above, is the sum of two staff readings and an error would be produced equal to (A) The distance between the zero of gradient and the foot of the staff (B) Twice the distance between the zero of graduation and the foot of the staff (C) Thrice the distance between the zero of graduation and the foot of the staff (D) None of the above

Description : The difference of level between a point below the plane of sight and one above, is the sum of two staff readings and an error would be produced equal to (A) The distance between the zero of ... Thrice the distance between the zero of graduation and the foot of the staff (D) None of the above

Last Answer : (B) Twice the distance between the zero of graduation and the foot of the staff

At the junction of sewers A. Top of smaller sewer is kept lower B. Top of larger sewer is kept lower C. Tops of both the sewers are at the same level D. None of these

Description : At the junction of sewers A. Top of smaller sewer is kept lower B. Top of larger sewer is kept lower C. Tops of both the sewers are at the same level D. None of these

Last Answer : ANS: D

Signals with a frequency below 2 MHz use _______ propagation. A) ground B) sky C) line-of-sight D) none of the above

Description : Signals with a frequency below 2 MHz use _______ propagation. A) ground B) sky C) line-of-sight D) none of the above

Last Answer : ground

There are two points on a highway a,b. They are 70 km apart. An auto starts from A and another auto starts from B simultaneously. If they travel in the same direction, they meet in 7 hours, but if they travel towards each other they meet in 1 hour. Find how fast the two autos are -Maths 10th

Description : There are two points on a highway a,b. They are 70 km apart. An auto starts from A and another auto starts from B simultaneously. If they travel in the same direction, they meet in 7 hours, but if they travel towards each other they meet in 1 hour. Find how fast the two autos are -Maths 10th

Last Answer : When they travel in same direction, suppose they meet when B travels for x m, then A will have travelled 70+x m in the same time Since, Speed =TimeDistance Speed of auto at A =7x+70 And Speed of auto at B =7x ... So, Speed of auto at A =7x+70 =7280 =40km/hr Speed of auto at B =7x =7210 =30km/hr

Two trains starting at the same time from two stations 200 km apart and going in opposite directions cross each other at a distance of 110 km from one of the stations. What is the ratio of their speeds? A.9 : 28 B.11 : 9 C.11 : 8 D.9 : 22 E.None of these

Description : Two trains starting at the same time from two stations 200 km apart and going in opposite directions cross each other at a distance of 110 km from one of the stations. What is the ratio of their speeds? A.9 : 28 B.11 : 9 C.11 : 8 D.9 : 22 E.None of these

Last Answer : Answer – B (11 : 9) Explanation – In the same time, they cover 110 km and 90 km respectively.Ratio of their speeds = 110 : 90 = 11 : 9 

Two trains of equal length are running on parallel lines in the same direction at 46 km/hr and 36 km/hr. The faster train passes the slower train in 36 seconds. The length of each train is: A.40 m B.55 m C.65 m D.50 m E.None of these

Description : Two trains of equal length are running on parallel lines in the same direction at 46 km/hr and 36 km/hr. The faster train passes the slower train in 36 seconds. The length of each train is: A.40 m B.55 m C.65 m D.50 m E.None of these

Last Answer : Answer- D (50) Explanation – Relative speed= total lengths/time (46-36) x 5/18 = [L + L ] / 36 10 x (5/18) x36 x (1/2)= L L=50 m

Two trains are running at 120 km/hr and 60km/hr respectively in the same direction. Fast train completely passes a boy sitting in the slower train in 15 seconds. What is the length of the fast train? A) 150m B) 550 m C) 250m D) 215m

Description : Two trains are running at 120 km/hr and 60km/hr respectively in the same direction. Fast train completely passes a boy sitting in the slower train in 15 seconds. What is the length of the fast train? A) 150m B) 550 m C) 250m D) 215m 

Last Answer :  ANSWER: C  Explanation:  Speed of the 1st train = 120km/hr  Speed of the 2nd train = 60km/hr If the direction is given in the same direction then we subtract the relative speed.  Relative speed = (120 - 60) ... / 3 * 15)m  =(750/3)m  = 250m  Therefore the length of the faster train is 250m

The suitable contour interval for a map with scale 1 : 10000 is (A) 2 m (B) 5 m (C) 10 m (D) 20 m

Description : The suitable contour interval for a map with scale 1 : 10000 is (A) 2 m (B) 5 m (C) 10 m (D) 20 m

Last Answer : (A) 2 m

Pick up the correct statement from the following: (A) Detailed survey is carried out for a strip of land about 30 m at sharp curves (B) Levels are taken along the trace cut at an interval of 20 m (C) Contour interval is generally adopted at 2 metres vertical interval (D) All the above

Description : Pick up the correct statement from the following: (A) Detailed survey is carried out for a strip of land about 30 m at sharp curves (B) Levels are taken along the trace cut at an interval of 20 m (C) Contour interval is generally adopted at 2 metres vertical interval (D) All the above

Last Answer : Answer: Option D

A train 125 m long passes a man, running at 5 kmph in the same direction in which the train is going, in 10 seconds. The speed of the train is: A.35 km/hr B.50 km/hr C.48 km/hr D.55 km/hr E.None of these

Description : A train 125 m long passes a man, running at 5 kmph in the same direction in which the train is going, in 10 seconds. The speed of the train is: A.35 km/hr B.50 km/hr C.48 km/hr D.55 km/hr E.None of these

Last Answer : Answer – B (50 km/hr) Explanation – Let speed be S Relative speed = total lengths/time [ in this case man length is neglible compare to train so neglected] (S – 5) x 5/18 = 125 /10 S- 5 = (125/10)x(18/5) S-5 = 45 S=50 km/hr

Let p and q be two trains 65m and 70m long are running on parallel tracks in the same direction with a speed of 34km/hr and 25 km/hr. how long will it take to clear off each other from the moment they met? A) 54sec B) 56sec C) 45sec D) None of these

Description :  Let p and q be two trains 65m and 70m long are running on parallel tracks in the same direction with a speed of 34km/hr and 25 km/hr. how long will it take to clear off each other from the moment they met? A) 54sec B) 56sec C) 45sec D) None of these

Last Answer : ANSWER : A  Explanation :  Speed of the train p = 34km/hr  Speed of the train q = 25 km/hr  If the direction is given in the same direction then we subtract  So relative speed of trains = (34 - 25)km/hr  = 9 km ... 65 + 70)m  = 135m  Therefore time = (135 / (5/2))sec  = 270/5 sec  =54 sec.

Deviation of the actual road gradient from the proposed contour gradient uphill side, involves (A) Embankment on the centre line (B) Excavation on the centre line (C) Earth work on the centre line (D) None of these

Description : Deviation of the actual road gradient from the proposed contour gradient uphill side, involves  (A) Embankment on the centre line  (B) Excavation on the centre line  (C) Earth work on the centre line  (D) None of these

Last Answer : (B) Excavation on the centre line 

The angle of intersection of a contour and a ridge line, is (A) 30° (B) 45° (C) 60° (D) 90°

Description : The angle of intersection of a contour and a ridge line, is  (A) 30°  (B) 45°  (C) 60°  (D) 90° 

Last Answer : (D) 90° 

The boundary of water of a still lake represents (A) Level surface (B) Horizontal surface (C) Contour line (D) A concave surface

Description : The boundary of water of a still lake represents (A) Level surface (B) Horizontal surface (C) Contour line (D) A concave surface

Last Answer : (C) Contour line