Daily NEET MCQ- July 12, 2022 - NEET MCQ

Neptunium was the first transuranium element to be discovered in 1940. It is a silvery metal, with a melting point of 637°C and a boiling point of 4174°C. It exhibits oxidation states of +3 to +7 in compounds and useful for chemical experiments.

The most common plutonium isotope formed in a typical nuclear reactor is the fissile Pu-239, formed by neutron capture from U-238 (followed by beta decay), and which when fissioned yields much the same energy as the fission of U-235.

Uranium is used as fuel in nuclear reactors. It is mined and goes through refining and enrichment before being loaded into a nuclear reactor. Nuclear power plants use a certain kind of uranium, referred to as U-235, for fuel because its atoms are easily split apart.

The classification of electromagnetic waves done according to the frequency called the electromagnetic spectrum. The basic difference various type of electromagnetic waves lies in their wavelength or frequency since all of them travel through vacuum at the same speed and also, the waves differ in their mode of interaction with matter.

 Radio Waves are generally in the frequency range ➔ 500 kHz to 1000 MHz. Radio waves are used for long-distance communication, such as in television, mobiles, and radios. These devices receive radio waves and convert them to mechanical vibrations in the speaker to create sound waves.

Microwave ovens are an application of microwaves. In microwave ovens, the frequency of microwave produced is matched with the natural frequency of water molecules so that resonance occurs and water molecules in the material vibrate at the higher amplitude and transfer energy to nearby food molecules, results in heating the food.

Nutrients are the chemical compounds that organisms require to grow, reproduce and regulate various body functions. Maximum nutrients are obtained from fruits and vegetables.

The standing state is the amount of nutrients present in the soil at any given time. These nutrients include various minerals, compounds, and elements such as carbon, phosphorus, nitrogen, calcium, etc.

The standing state is the amount of nutrients present in the soil at any given time. These nutrients include various minerals, compounds, and elements. It varies with changing ecosystem and season.

Nutrients are the chemical compounds that organisms require to grow, reproduce and regulate various body functions. Recycling and indefinite use of nutrients are done which are never lost from the ecosystems.