The process by which atmospheric nitrogen is converted to ammonia by industrial process is: MCQ with Answer and Explanation

Explanation:
The conversion of milk to curd (yogurt) is a fermentation process primarily caused by lactic acid bacteria (LAB), such as Lactobacillus. These bacteria ferment the lactose (milk sugar) into lactic acid. The lactic acid lowers the pH, causing the milk protein (casein) to coagulate and solidify, forming curd. It also improves the nutritional value by producing Vitamin B12.

Explanation:
Iron is the central atom of heme in hemoglobin, essential for binding oxygen. Magnesium is in chlorophyll, calcium in bones and signaling, phosphorus in ATP and bones.

Explanation:
Robert Hooke, in 1665, observed dead cork tissue under a microscope and coined the term 'cell' for the box-like structures he saw. Antonie van Leeuwenhoek, using his superior single-lens microscopes in the 1670s, was the first to observe and describe living microorganisms, including bacteria and protozoa. Charles Darwin proposed the theory of evolution by natural selection; the cell theory was proposed by Matthias Schleiden and Theodor Schwann. Thus, statements 1 and 2 are correct.