Explanation

• A light year is the distance that light travels in one year.
• It is used to measure vast distances in space.
• Light moves at approximately 299,792 km per second.
• One light year ≈ 9.46 trillion kilometers (5.88 trillion miles).

Last verified on 17-03-2026

Explanation

• A lactometer is used to measure the purity and density (thickness) of milk.
• It checks if milk has been adulterated with water by measuring specific gravity.
• Works on the principle of buoyancy.
• Pure milk specific gravity: 1.028–1.032 at 15°C

Last verified on 16-03-2026

Explanation

• The average normal body temperature is generally accepted as 98.6°F (37°C).
• A temperature over 100.4°F (38°C) means you have a fever.

Additional Information:

• Hypothermia is the term used for temperature less than 36.50°C.
• Mild Pyrexia is the term used for temperature (99-100°F).
• Moderate Pyrexia is the term used for temperature (100-103°F).
• Severe Pyrexia is the term used for temperature (103-105°F).

Explanation

• Natural gas contains about 80% to 95% methane.
• It is a hydrocarbon fuel.
• It is the chief (major) component of natural gas.
• It is also a greenhouse gas.
• Chemical formula: CH₄
• It is a clean-burning fuel used in daily life.

Last verified on 07-05-2026

Explanation

• Ribosomes are the sites of protein synthesis in the cell.
• They read genetic instructions (mRNA) and assemble amino acids into proteins.
• They can be found free in the cytoplasm or attached to rough ER.
• They are made of RNA and proteins.
• They are present in both prokaryotic and eukaryotic cells.

Last verified on 06-05-2026