Explanation

• Minor objects with irregular shapes orbiting the Sun are called asteroids,
• It is also known as a minor planet
• They are found mainly in the asteroid belt between Mars and Jupiter.

Explanation

• The SI unit of energy is the Joule (J).
• It is the unit of energy, work, and heat.

Additional information:

• 1 Joule (J) = 1 Newton × 1 meter
• Calorie – 1 cal = 4.184 J
• Kilowatt-hour (kWh) – 1 kWh = 3.6 × 10⁶ J
• Electronvolt (eV) – 1 eV ≈ 1.602 × 10⁻¹⁹ J
• Erg (CGS unit) – 1 erg = 10⁻⁷ J

Last verified on 17-01-2026

Explanation

• The study of relationships between organisms and their environment is called Ecology.
• It helps understand how living things interact with each other and with their surroundings.

Additional information:

• Embryology studies development of embryos.
• Ethology studies animal behavior.
• Entomology studies insects.

Last verified on 16-01-2026

Explanation

The telescope is undoubtedly the most important investigative tool in astronomy.

A celestial body that revolves around a planet is known as a natural satellite.

Explanation

The air in Earth's atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen.

Explanation

• Venus and Mercury are the only planets in the solar system that do not have any natural satellites or moons.
• Likely due to their proximity to the Sun and gravitational influences.

Explanation

• During the daytime, plants require Carbon Dioxide (CO2) for photosynthesis.
• Which is the process by which they produce glucose and oxygen.

Explanation

• Distillation is a process that involves boiling the seawater and then collecting the condensed steam, which is free from salt and other impurities, resulting in fresh drinking water.
• This process is commonly used in desalination plants to produce drinking water from seawater.

Explanation

• Sublimation is the transition of a substance from the solid to the gas phase without going through the liquid phase.
• Glucose and Sodium Chloride do not sublime, as they require a liquid phase transition before turning into a gas.

Here are the some solid sublime material:

• Iodine
• Camphor or Dry ice

Explanation

• Carbon Dioxide (CO2) is a greenhouse gas that traps heat in the Earth's atmosphere.
• It contributing to the greenhouse effect and global warming.