Everyday Science

Excessive intake of Vitamin A can lead to toxicity that affects the kidneys, causing kidney damage. Overdose of proteins or vitamins B and C is less commonly associated with kidney disease.

A disease always has a cause, which can be a pathogen, genetic factor, or environmental influence. The other options are not always true: not all diseases have a cure, germs are not the cause of all diseases, and a disease does not always have a patient (e.g., theoretical or experimental contexts).

BRT stands for Bus Rapid Transit, which is a high-quality bus-based transit system that delivers fast, comfortable, and cost-effective services at metro-level capacities.

The most common form of color blindness is red-green color blindness, where individuals have difficulty distinguishing between red and green hues. The other options do not represent typical color blindness distinctions.

Silicon is often called the 'earth maker' because it is a major component of the Earth's crust, forming many minerals and rocks. The other elements listed do not have this specific association.

Meat primarily consists of proteins and fats and contains negligible carbohydrates, unlike rice, potato, and milk which all contain carbohydrates. Therefore, meat is the correct answer as it does not contain carbohydrates.

Sodium thiosulphate is commonly used as a fixer in photography to dissolve unexposed silver halide crystals from the photographic film or paper, making the image permanent and light-resistant.

The plague is primarily spread by fleas that infest rats, making rats the main carriers of the disease. This is why option C, 'Rat', is the correct answer.

EEG (Electroencephalogram) is a diagnostic tool used to measure electrical activity in the brain, making it useful for diagnosing brain-related ailments such as epilepsy and other neurological disorders.

The dielectric constant of water at room temperature is approximately 80, which makes option C correct. This value reflects water's high polarity and ability to reduce the electric field between charges.