Everyday Science

Milk typically has a pH around 6.5 to 6.7, making it slightly acidic. This slight acidity is due to the presence of lactic acid and other organic acids in milk.

Casimir Funk is credited with coining the term 'vitamine' and discovering vitamins as essential nutrients, making him the correct answer.

The accumulation of salts in the kidneys leads to the formation of kidney stones, which are hard deposits made of minerals and salts. This condition is known as kidney stones, making option D the correct answer.

Uranus is known as the "Lopsided planet" because its axis of rotation is tilted over 90 degrees, causing it to essentially rotate on its side compared to other planets.

Ethylene gas is commonly used for artificial ripening of green fruits because it acts as a natural plant hormone that triggers the ripening process.

Temperature is a measure of the average kinetic energy of particles in a substance, not a form of energy itself. Heat, light, and electricity are all forms of energy.

The Earth's atmosphere is primarily composed of nitrogen, which makes up about 78% of the atmosphere by volume, making it the principal constituent. Oxygen is the second most abundant gas, but not the principal one.

Crude oil is a natural source of hydrocarbons formed from the remains of ancient marine organisms, making it the primary natural source of hydrocarbons. Biomass and carbohydrates are organic but not primarily hydrocarbon sources, and coal is a carbon-rich fossil fuel but not classified as a hydrocarbon source like crude oil.

Galvanizing is the process of coating iron or steel with zinc to protect it from rusting. Zinc acts as a sacrificial metal, preventing corrosion of the underlying iron.

The average distance from the Earth to the Moon is approximately 384,400 kilometers, which is the widely accepted average orbital distance.