Everyday Science

Evaporation from ice and snow directly into water vapor without passing through the liquid phase is called sublimation. This distinguishes it from regular evaporation, which involves liquid water turning into vapor.

Isobars are lines on a weather map that connect points of equal atmospheric pressure, which helps in understanding pressure patterns and forecasting weather.

Jupiter is the largest planet in our solar system, larger than Neptune, Saturn, and Mars, making option B the correct answer.

The diameter of the Sun is approximately 1.4 million kilometers, which corresponds to 14 lakh kilometers. This makes option C the correct choice.

Wheat typically contains about 12% protein, which is a standard value used in nutritional and agricultural contexts. This makes option C the correct choice.

The protein content of the edible portion of an egg is approximately 13.3%, which is the most accurate among the given options. This value represents the proportion of protein in the part of the egg that is typically consumed.

Authoritative sources including the National Cancer Institute and International Agency for Research on Cancer confirm that tobacco smoke contains thousands of chemicals, including acetone (commonly found in nail polish remover), hydrocarbons related to rocket fuel components, and chemicals found in lighter fluids. However, chlorine bleach is not a chemical constituent of tobacco smoke. The other options represent chemicals or chemical types that have been identified in tobacco smoke, while chlorine bleach is a separate chemical not present in tobacco smoke.

X-rays are a form of ionizing radiation that can kill bacteria by damaging their DNA, making option C correct. While X-rays can affect other microorganisms, they are primarily used to sterilize food by killing bacteria.

The Big Bang theory explains the origin of the universe, describing how it expanded from a hot, dense initial state. It does not explain the origin of the Sun or the laws of physics.

The study of the universe, including its origin, structure, evolution, and eventual fate, is known as Cosmology. The other options refer to different fields: Sociology studies society, Universology is not a recognized scientific field, and Petology is the study of rocks.