Explanation

Liquified HCl has been cooled until the gas turns into a liquid.

ND06-08-2023

Explanation

Cadmium is not a radioactive element.

It is a metal used in batteries and coatings.

Whereas Uranium and Plutonium are radioactive.

They used as nuclear fuels.

Explanation

Pyridine is an important class of nitrogen-containing heterocycles found in various natural products.

Explanation

1. Oxygen: The most abundant element in the Earth's crust, making up about 47% of the Earth's mass.
2. Silicon: The second most abundant element in the Earth's crust, making up about 27.7% of the crust 
3. Aluminum: The third most abundant element in the Earth's crust, making up around 8.1%.

Explanation

 Titanium element has an atomic number of 22 and a mass of 47.90

Explanation

Sonorous materials produce a ringing sound when struck.

Metals are sonorous due to their ability to vibrate and transmit sound.

Explanation

Aluminum is the most abundant metal in the Earth's crust, and the third most abundant element therein, after oxygen and silicon.

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

The light from an ordinary lamp is hotter than a tube light because of incandescence.

The process by which light is produced through heat.

In an incandescent light bulb, an electric current heats a thin metal filament until it glows and produces light.

Explanation

Copper is a non-magnetic material, meaning it does not exhibit magnetic properties.

Cobalt, Iron, and Nickel are magnetic materials, as they can be magnetized and attract magnets.