Govt. Exams
Entrance Exams
15% of 240 = (15/100) × 240 = 36
Using Distance = Speed × Time: Distance = 3 × 10⁸ × 2 = 6 × 10⁸ meters.
Coal is a non-renewable fossil fuel that takes millions of years to form. Solar, wind, and hydroelectric are renewable sources.
Carbon has an atomic number of 6, meaning it has 6 protons in its nucleus. Its atomic mass is approximately 12.
The four fundamental states of matter are solid, liquid, gas, and plasma. Energy is not a state of matter; it is a property or capability of matter to do work.
Oxygen is essential for aerobic respiration in most organisms. It is used in cellular respiration to produce energy (ATP).
Vitamin D is produced by the body when skin is exposed to ultraviolet rays from the sun.
Hydrochloric acid (HCl) is secreted by the stomach lining and helps in the digestion of proteins.
Solar energy is a renewable source that can be replenished naturally, while coal, natural gas, and petroleum are non-renewable fossil fuels.
Common salt is sodium chloride (NaCl), composed of sodium and chlorine ions.
