Why Black soil is Black in colour? -SST 10th

Why Black soil is Black in colour? -SST 10th
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1 Answer

Answer :

 It is Black in colour due to high percentage of iron content.
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What do you understand by the word regur ? (a) Black soil found in the Deccan (b) Grey-brown soil found in Russia (c) Red, colour sticky soil, found in the Amazon area (d) Black soil found in northern Argentina shop.ssbcrack.com

Description : What do you understand by the word regur ? (a) Black soil found in the Deccan (b) Grey-brown soil found in Russia (c) Red, colour sticky soil, found in the Amazon area (d) Black soil found in northern Argentina shop.ssbcrack.com

Last Answer : Ans: (a)

Black soil shows black colour due to compound

Description : Black soil shows black colour due to compound

Last Answer : Ans. Mn

he soil which is found in the areas having heavy rainfall and high humidity, contains large quantity of organic matter and heavy and black in colour – a. Black soil b. Peat soil c. Forest soil d. Laterite soil

Description : he soil which is found in the areas having heavy rainfall and high humidity, contains large quantity of organic matter and heavy and black in colour – a. Black soil b. Peat soil c. Forest soil d. Laterite soil

Last Answer : b. Peat soil

Consider the following statements: 1. Buried service lines should be avoided in an expansive soil region. 2. A swelling pressure less than 20 kN/m2 is not of much consequence. 3. If soil is not black in colour, it is unlikely to be an expansive soil. Which of these statements are correct? (a) 1, 2 & 3 (b) 1 & 2 only (c) 2 & 3 only (d) 1 & 3 only

Description : Consider the following statements: 1. Buried service lines should be avoided in an expansive soil region. 2. A swelling pressure less than 20 kN/m2 is not of much consequence. 3. If soil is not black in colour, it is unlikely to be an ... (a) 1, 2 & 3 (b) 1 & 2 only (c) 2 & 3 only (d) 1 & 3 only

Last Answer : (b) 1 & 2 only

Why is the Red Soil red in colour? -SST 10th

Description : Why is the Red Soil red in colour? -SST 10th

Last Answer : Red Soil is red in colour because it contains a great proportion of iron-oxides. At several places, their colour has slightly changed and appears brown or grey.

Give reason as to why : (i) Red soil is red in colour. -Geography

Description : Give reason as to why : (i) Red soil is red in colour. -Geography

Last Answer : (i) Red soil is red in colour because it is rich in Iron Oxide. (ii) Large tracts in Maharashtra are covered with black soil because this region is made up of lava traps. (iii) ... man has cleared the forest for his habitation, adopted wrong methods of farming, over grazing by animals etc.

Identify the soil which ranges from red to brown in colour and saline in nature: (a) Red soil (b) Laterite  soil (c) Arid soil (d) Alluvial soil

Description : Identify the soil which ranges from red to brown in colour and saline in nature: (a) Red soil (b) Laterite  soil (c) Arid soil (d) Alluvial soil

Last Answer : Identify the soil which ranges from red to brown in colour and saline in nature: (a) Red soil (b) Laterite soil (c) Arid soil (d) Alluvial soil

Which of the following statements regarding red soils of India is/are correct? 1. The colour of the soil is-red due to ferric oxide content. 2. Red soils are rich in lime, humous and potash. 3. They are porous and have friable structure. Select the correct answer using the code given below: [(OS2011] (a) 1 only (b) 1 and 3 only (c) 2 and 3 only (d) 1, 2 and 3

Description : Which of the following statements regarding red soils of India is/are correct? 1. The colour of the soil is-red due to ferric oxide content. 2. Red soils are rich in lime, humous and potash. 3. They are porous and have friable ... OS2011] (a) 1 only (b) 1 and 3 only (c) 2 and 3 only (d) 1, 2 and 3

Last Answer : Ans: (b)

Soil colour is determined by

Description : Soil colour is determined by

Last Answer : Ans. Munsell Colour chart

The colour of loamy soil is – (1) Greenish brown (2) Bluish green (3) Yellowish brown (4) Blackish brown

Description : The colour of loamy soil is – (1) Greenish brown (2) Bluish green (3) Yellowish brown (4) Blackish brown

Last Answer : (4) Blackish brown Explanation: Loam encompasses a variety of soil types, some granulated and nicely draining, while others may be thicker and have the consistency of mud. Most loam soils are a brown or black ... yet the drainage is well. Loamy soil is composed of 40 % sand, 40% silt and 20% clay.

The orange colour of carrot is because of – (1) it grows in the soil (2) Carotene (3) it is not exposed to sun-light (4) the entire plant is orange in colour

Description : The orange colour of carrot is because of – (1) it grows in the soil (2) Carotene (3) it is not exposed to sun-light (4) the entire plant is orange in colour

Last Answer : (2) Carotene Explanation: The carrot gets its characteristic, bright orange colour from beta-carotene and lesser amounts of carotene, carotene, lutein and zeaxan thin.

Red colour of red soil is due to

Description : Red colour of red soil is due to

Last Answer : Iron

The reason for the brown colour of soil and rock is the presence of?

Description : The reason for the brown colour of soil and rock is the presence of?

Last Answer : Iron Oxide

Colour of carrot roots is affected by: a. Soil temperature b. Soil moisture c. Soil texture d. All of above

Description : Colour of carrot roots is affected by: a. Soil temperature b. Soil moisture c. Soil texture d. All of above

Last Answer : Soil moisture

White colour of soil is due to the presence of – a) Silica b) Iron c) Manganese oxide d) All of these

Description : White colour of soil is due to the presence of – a) Silica b) Iron c) Manganese oxide d) All of these

Last Answer : c) Manganese oxide

Soil colour determination is standardized and determined by the comparison of the soil colour to? a Tensiometer b Gypsum block c Munsell chart d None of the above

Description : Soil colour determination is standardized and determined by the comparison of the soil colour to? a Tensiometer b Gypsum block c Munsell chart d None of the above

Last Answer : c Munsell chart

Carrot is orange in colour because (1) It grows in the soil (2) It is not exposed to sunlight (3) It contains carotene (4) The entire plant is orange in colour

Description : Carrot is orange in colour because (1) It grows in the soil (2) It is not exposed to sunlight (3) It contains carotene (4) The entire plant is orange in colour

Last Answer : It contains carotene 

The colour of loamy soil is (1) Greenish brown (2) Bluish green (3) Yellowish brown (4) Blackish brown

Description : The colour of loamy soil is (1) Greenish brown (2) Bluish green (3) Yellowish brown (4) Blackish brown

Last Answer : Blackish brown

What colour button down shirt should I wear under a black sweater vest?

Description : What colour button down shirt should I wear under a black sweater vest?

Last Answer : Black goes with anything, remember?

I have pink pimples on my back and they turn to light black colour on my skin when they finish , please tell me what is this?

Description : I have pink pimples on my back and they turn to light black colour on my skin when they finish , please tell me what is this?

Last Answer : Hard to say without seeing them, and I don’t really want to see them, be honest, but are they maybe blackheads? Google it, maybe google “blackhead” on google images and see if the images match what’s going on with your skin. They’re very common.

How to highlight your black hair with lemon juice?what colour will your hair become afterwards?and can you bleach your nails using a lemon too?

Description : How to highlight your black hair with lemon juice?what colour will your hair become afterwards?and can you bleach your nails using a lemon too?

Last Answer : answer:Your hair probably won't lighten much at all from lemon juice. This works best on hair that is naturally light, and really only if you intend to sit out in the sun. Even then the ... running it under the edge of your fingernail a few times. Repeat until your nails are the desired lightness.

`H_(2)S` reacts with lead acetate forming black compound which reacts with `O_(3)` to form another compound Y. The colour of the compound Y is:

Description : `H_(2)S` reacts with lead acetate forming black compound which reacts with `O_(3)` to form another compound Y. The colour of the compound Y is:

Last Answer : `H_(2)S` reacts with lead acetate forming black compound which reacts with `O_(3)` to form another compound ... : A. black B. violet C. white D. green

A voltage of 30 V is applied across a colour coded carbon resistor with first, second and third rings of blue, black and yellow colurs. What is the cu

Description : A voltage of 30 V is applied across a colour coded carbon resistor with first, second and third rings of blue, black and yellow colurs. What is the cu

Last Answer : A voltage of 30 V is applied across a colour coded carbon resistor with first, second and ... What is the current flowing through the resistor ?

What colour is a black eagle?

Description : What colour is a black eagle?

Last Answer : black

Why does a black board appears black in colour?

Description : Why does a black board appears black in colour?

Last Answer : It absorbs all the colours

Black soils are ideal for cultivation of cotton as (a) their colour is black (b) they can retain moisture (c) they are made of lava (d) they are found on plateau regions

Description : Black soils are ideal for cultivation of cotton as (a) their colour is black (b) they can retain moisture (c) they are made of lava (d) they are found on plateau regions

Last Answer : Ans: (b)

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Description : 23 Which one of the following sets of colour combinations is added in colour vision in TV? A. Red, green and blue B. Orange, black and violet C. White, red and Yellow D. Green, Yellow and Blue

Last Answer : ANSWER: A

To an astronaut in the spacecraft, the sky colour appears to be (a) Blue (b) White (c) Black (d) Orange red

Description : To an astronaut in the spacecraft, the sky colour appears to be (a) Blue (b) White (c) Black (d) Orange red

Last Answer : Ans:(c)

What is the colour of the "Dharma Chakra" in the middle of our national flag? (1) Sea blue (2) Black (3) Navy blue (4) Green

Description : What is the colour of the "Dharma Chakra" in the middle of our national flag? (1) Sea blue (2) Black (3) Navy blue (4) Green

Last Answer : (3) Navy blue Explanation: The most visible use of the Ashoka Chakra today is at the centre of the National flag of the Republic of India (adopted on 22 July 1947), where it is rendered ... background, by replacing the symbol of Charkha (Spinning wheel) of the pre-independence versions of the flag.

What is the colour of the "Dharma Chakra" in the middle of our national flag? (1) Sea blue (2) Black (3) Navy blue (4) Green

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The endangered species are listed in what colour data book? (1) Black (2) Red (3) Green – (4) Blue

Description : The endangered species are listed in what colour data book? (1) Black (2) Red (3) Green – (4) Blue

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Persons who are colour-blind cannot distinguish between – (1) yellow and white (2) green and blue (3) red and green (4) black and yellow

Description : Persons who are colour-blind cannot distinguish between – (1) yellow and white (2) green and blue (3) red and green (4) black and yellow

Last Answer : (3) red and green Explanation: A person with colour-blindness has trouble seeing red, green, blue, or mixtures of these colours. The most common type is redgreen colours - blindness, where red and green are as the same colour.

A potato tuber has been cut into two halves. A few drops of iodine solution are placed on the cut surface of one of the halves. What colour change will be noticed? (1) From brown to blue-black (2) From brown to orange-red (3) From blue to pink (4) From pink to blue-green

Description : A potato tuber has been cut into two halves. A few drops of iodine solution are placed on the cut surface of one of the halves. What colour change will be noticed? (1) From brown to blue-black (2) From brown to orange-red (3) From blue to pink (4) From pink to blue-green

Last Answer : (1) From brown to blueblack Explanation: Any form of starch (carbohydrate) turns blue-black when iodine solution is applied to it. This is because starch is composed of polymers of ... already mentioned. The complex of iodine stuck inside the amylose coil produces a characteristic blueblack colour.

potato tuber has been cut into two halves. A few drops of iodine solution are placed on the cut surface of one of the halves. What colour change will be noticed? (1) From brown to blue-black (2) From brown to orange-red (3) From blue to pink (4) From pink to blue-green

Description : potato tuber has been cut into two halves. A few drops of iodine solution are placed on the cut surface of one of the halves. What colour change will be noticed? (1) From brown to blue-black (2) From brown to orange-red (3) From blue to pink (4) From pink to blue-green

Last Answer : (1) From brown to blueblack Explanation: The Iodine test is used to test for the presence of starch. Iodine solution — iodine dissolved in an aqueous solution of potassium iodide — reacts with the starch producing a purple black colour.

Which combination of colour is the most convenient during day and night time? (1) Organe and blue (2) While and black (3) Yellow and blue (4) Red and green

Description : Which combination of colour is the most convenient during day and night time? (1) Organe and blue (2) While and black (3) Yellow and blue (4) Red and green

Last Answer : (4) Red and green Explanation: Red and green is the most convenient combination during day and night time because of very precise visibility. In modem colour theory, also known as the RGB colour ... almost any colour. This is the principle used to make the colours on computer screen and television.

A colour-blind person cannot – (1) See distant objects (2) See black colour (3) Distinguish between certain colours (4) Have persistence of vision

Description : A colour-blind person cannot – (1) See distant objects (2) See black colour (3) Distinguish between certain colours (4) Have persistence of vision

Last Answer : (3) Distinguish between certain colours Explanation: Colour blindness or colour vision deficiency is the inability or decreased ability to see coluor, or perceive colour differences, under normal lighting ... to the optic nerve. This type of colour blindness is usually a sex-linked condition.

Q No: 271 Pick up the correct statement from the following: A. Turbidity is more in strong sewage B. The black colour indicates septic sewage C. The sewage omits offensive odours after four hours D. All the above

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Last Answer : ANS: D

Light colours absorb less heat therefore these are not heated as much as the black colour.

Description : Light colours absorb less heat therefore these are not heated as much as the black colour.

Last Answer : Ans: Dark colours do not exactly absorb more heat, but they do convert a higher percentage of light into heat. In the sun with a dark coloured shirt it gets hot, where a lighter ... and converted into heat. White objects reflect all visible light, where black objects absorb all visible light.

Sometimes the side of concrete bridges is observed to turn black in colour. What is the reason for this phenomenon?

Description : Sometimes the side of concrete bridges is observed to turn black in colour. What is the reason for this phenomenon?

Last Answer : In some cases, it may be due to the accumulation of dust and dirt. However, for the majority of such phenomenon, it is due to fungus or algae growth on concrete bridges. After rainfall, the ... help to solve this problem. Reference is made to Sandberg Consulting Engineers Report 18380/X/01.

Stefan-Boltzmann law applies to __________ body. (A) Black (B) White (C) Grey (D) Any colour

Description : Stefan-Boltzmann law applies to __________ body. (A) Black (B) White (C) Grey (D) Any colour

Last Answer : (A) Black

In the case of peppered moth (Biston betularia) the black-coloured form became dominant over the light-coloured form in England during industrial revolution. This is an example of (a) appearance of the darker coloured individuals due to very poor sunlight (b) protective mimicry (c) inheritance of darker colour character acquired due to the darker environment (d) natural selection whereby the darker forms were selected.

Description : In the case of peppered moth (Biston betularia) the black-coloured form became dominant over the light-coloured form in England during industrial revolution. This is an example of (a) ... acquired due to the darker environment (d) natural selection whereby the darker forms were selected.

Last Answer : (d) natural selection whereby the darker forms were selected.

Assertion: Black soils are black in colour due to diffusion of iron in crystalline and metamorphic rocks. Reason: They develop deep cracks during hot weather Options: (a) Both A and R are true and R is the correct explanation of A. (b) Both A and R are true and R is not the correct explanation of A.(c) A is true but B is false. (d) A is false but R is true.

Description : Assertion: Black soils are black in colour due to diffusion of iron in crystalline and metamorphic rocks. Reason: They develop deep cracks during hot weather Options: (a) Both A and R are true and R is the correct explanation of ... of A.(c) A is true but B is false. (d) A is false but R is true.

Last Answer : (d) A is false but R is true.

In absence of atmosphere, the colour of sky appears (a) blue (b) black (c) red (d) yellow

Description : In absence of atmosphere, the colour of sky appears (a) blue (b) black (c) red (d) yellow

Last Answer : (b) black

When black copper oxide placed in a beaker is treated with dilute HCl, its colour changes to......... a) Whiteb) Red c) Blue-green d) No change

Description : When black copper oxide placed in a beaker is treated with dilute HCl, its colour changes to......... a) Whiteb) Red c) Blue-green d) No change

Last Answer : c) Blue-green

On immersing gold pins in CuSO 4 solution for few minutes, you will observe (a) displacement reaction (b) the colour of solution fades away (c) the surface of gold pins acquire a black coating (d) No change

Description : On immersing gold pins in CuSO 4 solution for few minutes, you will observe (a) displacement reaction (b) the colour of solution fades away (c) the surface of gold pins acquire a black coating (d) No change

Last Answer : (d) No change

Titanium dioxide is a/an __________ colour pigment. (A) White (B) Black (C) Yellow (D) Blue

Description : Titanium dioxide is a/an __________ colour pigment. (A) White (B) Black (C) Yellow (D) Blue

Last Answer : (A) White

Pipelines carrying various utilities in chemical industries are identified by their colour codes. The color of pipeline carrying steam is (A) Black (B) Silver grey (C) Green (D) Yellow

Description : Pipelines carrying various utilities in chemical industries are identified by their colour codes. The color of pipeline carrying steam is (A) Black (B) Silver grey (C) Green (D) Yellow

Last Answer : ) Silver grey

The commonly used colour pigment in paints, is (A) Ambers (B) Carbon black (C) Iron oxide (D) All the above

Description : The commonly used colour pigment in paints, is (A) Ambers (B) Carbon black (C) Iron oxide (D) All the above

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A cuboid shaped wooden block has 6 cm length, 4 cm breadth and 1 cm height. 17. Two faces measuring 4 cm x 1 cm are coloured in black. 18. Two faces measuring 6 cm x 1 cm are coloured in red. 19. Two faces measuring 6 cm x 4 cm are coloured in green. 20. The block is divided into 6 equal cubes of side 1 cm (from 6 cm side), 4 equal cubes of side 1 cm(from 4 cm side). How many cubes will have green colour on two sides and rest of the four sides having no colour ? (a)12 (b)10 (c)8 (d)4

Description : A cuboid shaped wooden block has 6 cm length, 4 cm breadth and 1 cm height. 17. Two faces measuring 4 cm x 1 cm are coloured in black. 18. Two faces measuring 6 cm x 1 cm are coloured in red. 19. Two faces ... colour on two sides and rest of the four sides having no colour ? (a)12 (b)10 (c)8 (d)4

Last Answer : Answer key : (c)