Color Theory and Symbolism

Option $(A)$ is correct.

The more light the object absorbs, the more heat absorbed since light is energy. If you consider it a color, black absorbs the most heat. A black object absorbs all wavelengths of light and reflects none. Objects that are white, on the other hand, reflect all wavelengths of light and therefore absorb the least heat.

• Fluid or tissue scrap taken from the lesions and sores that appear in early stages of disease are used to diagnose if the patient is infected with viral infection or not.
• The stains used are such that it may stain the acidic genetic material present in the rapidly dividing cells of the virus or bacteria
• Since the fluid that is taken from the early lesions that appear on the skin in the early stage of the disease have syncytial condition ie more amount of genetic material is present therefore the staining will take place properly.
• 1% toluidine blue is basic dye that will stain the nucleic acid blue.
• Methylene blue is used to observe microscopic life under the microscope. It usually stains the outer wall or membrane of the organism.
• Alcian blue is used to stain acidic polysaccharide in muscles and tissue in histological studies.
• Coomassie blue is used for studying proteins as it stains the protein band blue color so that it can be observed as blue bands with a clear background as it does not stain any other thing in cell.
• Therefore the option C is correct as toluidine is the only dye her which will stain the acidic genetic material in the dividing cells of the virus.
• So, the correct answer is '1% toluidine blue'
  

we know that $\alpha +\rho +\tau =1$
${\alpha}= absorptivity$
${\rho}=reflectivity$
${\tau}=transmitivity$
so for black body ${\rho}\  and \ {\tau} \ will\  be \ zero$
so ${\alpha}=1$ so black hole has also ${\alpha}=1$ which is equivalent to black body.

Cobalt chloride paper is used to test for the presence of water. In this test, the colour of paper changes from blue to pink.

Purple is a secondary color created by mixing the primary colors red and blue.

If all walls face south, the house must be located at the North Pole. Therefore, the bear is a polar bear, which is white.

In stellar classification, color is an indicator of temperature. Blue stars are the hottest, followed by white, yellow, and red stars, which are the coolest.

Non-metals like phosphorous exist in various colors such as white, scarlet, yellow, red, violet, black. Similarly, sulfur is pale yellow, bromine is red-brown colored in liquid and vapor state.
Thus option $A$ is correct.

Black was the most popular color for flapper dresses. It was a versatile color that could be dressed up or down.

Neutral and muted tones, such as black, white, navy, and gray, are considered classic and professional, creating a sophisticated and polished look for a home office setting.

Blue is the predominant color used in the decoration of Khurja's blue pottery.

The four Cs of diamond quality are color, clarity, cut, and carat.

The four Cs of diamond quality are color, clarity, cut, and carat.

Wimbledon, the oldest and most prestigious tennis tournament, has a strict dress code that requires players to wear predominantly white attire with a touch of navy.