Tag: science & technology

Swine flu (H1N1) typically presents with respiratory symptoms including fever, cough, sore throat, and shortness of breath. Chest pain can occur in severe cases due to respiratory complications. However, increased saliva production (hypersalivation) is not associated with swine flu - this would be more indicative of oral/dental issues or certain poisonings, making it the correct 'not a symptom' answer.

Acetone is the primary solvent in nail polish remover that dissolves the polish. Methanol and ethanol are different types of alcohol, while limonene is a citrus extract used in some natural removers but is less common.

Exhaled air typically contains 15-19% oxygen, compared to 21% in inhaled air. This means roughly 75-90% of the original oxygen remains. Options A (77%), B (26%), and C (48%) are all incorrect values.

Stainless steel is primarily iron alloyed with chromium (minimum 10.5%). Nickel is often added for corrosion resistance and strength, but iron is the base metal. Zinc is not used in stainless steel.

The Earth's 23.5-degree axial tilt causes seasons as different hemispheres receive varying solar intensity throughout the year. Day and night are caused by rotation, tides by gravity, and earthquakes by tectonic activity.

The Sun (closest star to Earth) is approximately 93 million miles away. This distance is called one astronomical unit (AU). 54 million, 72 million, and 127 million miles are all incorrect.

Nitrogen (N2) makes up 78% of the atmosphere but is not a greenhouse gas. Greenhouse gases include methane, carbon dioxide, and ozone, which trap heat in the atmosphere.

Bamboo is the fastest growing plant, capable of growing up to 91 cm (35 inches) per day. Ferns, coconut palms, and banyan trees grow much more slowly.

Ligaments connect bones to other bones at joints, providing stability. Tendons connect muscle to bone, cartilage cushions joints, and synovial fluid lubricates joints.