Everyday Science

The scientific study of caves is called Speleology. The other options refer to different fields: Haematology is the study of blood, Oology is the study of eggs, and Oneriology is the study of dreams.

The scientific study of fingerprints is called dactylography. The other options refer to different fields: dactylology is sign language study, dactyliology is not a recognized term, and dialectology is the study of dialects.

Wooden doors absorb water during the rainy season through imbibition, causing the wood to swell and making the doors difficult to open or close.

The ionosphere is the layer of the atmosphere that reflects radio waves back to the Earth's surface, enabling long-distance radio communication. Other layers like the troposphere, stratosphere, and ozone layer do not have this property.

The "evening star" (commonly Venus) appears in the western sky after sunset, so its rising direction is actually in the East. The term "rising" refers to the celestial object appearing above the eastern horizon.

Neptune has the longest orbital period among the given options, taking about 165 Earth years to revolve once around the Sun, making it the slowest planet in its revolution.

China was the first country certified free of dracunculiasis transmission in 1997 by the World Health Organization. Pakistan was certified free later, but not in 1997. Therefore, option A is correct.

India became the first associate member of CERN from Asia on 19th December 2014, marking a significant milestone in its scientific collaboration with the European Organization for Nuclear Research.

Bauxite is the primary ore of aluminium, just as haematite is a major ore of iron. This analogy relates metals to their common ores.

The science that studies heavenly bodies such as stars, planets, and galaxies is called Astronomy. Astrology, while related to celestial bodies, is a belief system, not a science. Anatomy and Ecology are unrelated sciences.