Everyday Science

The ozone layer absorbs most of the Sun's harmful ultraviolet (UV) radiation, preventing it from reaching the Earth's surface and protecting living organisms from its damaging effects.

Light becomes visible when it scatters off dust particles in the air, making the path of the ray visible. This scattering causes the light to be seen as it travels in a straight line.

Rodenticides are chemicals specifically designed to kill rodents such as rats and mice. Insecticides target insects, fungicides target fungi, and herbicides target unwanted plants, so they are not correct for this question.

Bronze is an alloy primarily made of copper and tin, which is why option B is correct. Other metals like nickel, silver, or zinc are not the main components of bronze.

Meteorology is the scientific study of the atmosphere, including weather processes and forecasting. Therefore, option B, 'Atmosphere,' is the correct answer.

A pyrometer is an instrument specifically designed to measure very high temperatures, often in industrial settings. The other options measure different parameters: a manometer measures pressure, a thermostat regulates temperature, and a chronometer measures time.

Aristotle is considered the founder of meteorology because he wrote 'Meteorologica,' one of the earliest comprehensive works on weather and atmospheric phenomena.

The three primary nutrients essential for healthy plant growth are Nitrogen (N), Phosphorus (P), and Potassium (K). These elements support vital functions such as leaf growth, root development, and overall plant health.

Poplar is a common woody raw material used in the manufacture of paper pulp due to its suitable fiber characteristics. Cotton is a non-woody fiber, bagasse is a fibrous residue from sugarcane, and rice straw is an agricultural residue, not woody materials.

Nutrients are generally classified into six main types: carbohydrates, proteins, fats, vitamins, minerals, and water. Therefore, the options 1, 2, or 3 are incorrect, and 'None of These' is the closest correct answer among the given choices.