Explanation

 Brontophobia is the irrational and intense fear of thunder.

 The term comes from the Greek words "bronte" (thunder) and "phobos" (fear). 

Astraphobia, also known as astrapophobia, brontophobia

 Ergophobia: Fear of work

“Heliophobia” is the fear of Sunlight

Cibophobia is the fear of Food

Xenophobia is the fear of Stranger or Foreigner

“Agoraphobia” is the fear of Public Place

“Musophobia” is the fear of Rats

“Achluophobia” is the fear of Darkness

“Dendrophobia” is the fear of Trees

Explanation

 The synthetic fiber known as artificial silk is called rayon.

Rayon is a semi-synthetic fiber derived from natural sources like wood pulp

Explanation

Hydrogen and helium are the two lightest gases, both significantly lighter than air. 

Hydrogen: Considered the lightest gas.

Helium: Also lighter than air, but twice as heavy as hydrogen.

Air: Has a higher molecular weight than both hydrogen and helium. 

Explanation

Red phosphorus is the form of phosphorus used in safety matches.

It's found on the striking surface of the matchbox, not in the match head itself.

This design separation prevents the match from spontaneously igniting. 

Explanation

Temperature: High during the day (often above 35°C or 95°F), cooler at night.

Rainfall: Very low, usually less than 250 mm (10 inches) per year.

Humidity: Low, making the air feel dry.

Examples: Sahara Desert (Africa), Arabian Desert (Middle East), parts of Arizona and Nevada (USA).

Vegetation is sparse, and plants/animals are adapted to conserve water.

Explanation

Electrostatic precipitators use static electricity to remove smoke and dust from industrial gases.

Smoke particles are given an electrical charge as they pass through the device.

Charged particles are attracted to oppositely charged plates and stick to them.

This process ensures that the gases released into the atmosphere are cleaner.

Static electricity is widely used in pollution control and air purification system

Explanation

MRI provides detailed images of soft tissues and tiny internal structures using strong magnetic fields and radio waves.

It is highly effective for diagnosing issues in the brain, spinal cord, joints, and internal organs.

Explanation

Most abundant element in Earth crust is Oxygen.

Oxygen in the crust is (46.1%).

The chemical formula of oxygen (dioxygen) is O2.

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List of 10 Most Abundant Elements in the Earth's Crust

Explanation

Amylase is the enzyme that breaks down starches into sugars, and it is secreted by the salivary glands during the process of digestion.

Explanation

 Coal gas composition:

Typically contains around 50% hydrogen, 35% methane, and 10% carbon monoxide. 

Production method:

Coal is heated in the absence of air to produce these gases.