Electron | MCQs

Explanation

For 2p orbitals, the principal quantum number (n) is 2.

The azimuthal quantum number (l) for a p-orbital is 1.

So, n = 2, l = 1 is correct.

Explanation

• During General Pervaiz Musharraf's era (1999-2008), electronic media in Pakistan was liberalized and deregulated.
• It leading to a significant increase in the number of private TV channels and FM radio stations.
• This liberalization allowed for greater freedom of expression and a more diverse media landscape in Pakistan.

Explanation

The "Pakistan Electronic Media Regulatory Authority (PEMRA)" was established in 2002.

It was formed to regulate and oversee the electronic media in Pakistan.

It ensuring compliance with broadcasting standards and regulations.

Explanation

The main electronic component used in first-generation counterparts was Vacuum Tubes and Valves

Leo is called the first-generation computer

First-generation (1940 - 1956)  vacuum tubes as a major piece of technology. 

The ENIAC is an example of 1st generation computer.

The time span of first-generation electronic computers was 1943 to 1959

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Second generation (1956 - 1963) use of transistors.

Third generation (1964 - 1971)  use of Integrated circuits.

Fourth generation (1972 - 2010) use of the microprocessor

The fifth generation (2010 to present) use Artificial intelligence

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ND7-5-2023

Explanation

Electronic record-keeping helps businesses cut down on clutter and more easily navigate their employee files and tax paperwork. 

Explanation

Can you switch off the television?

We use the article THE when we refer to television as a device or a piece of furniture

ND11-4-2023

Explanation

• JJ Thomas was discovered by an Electron
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• In 1897 Thomson discovered the electron and then went on to propose a model for the structure of the atom.
• His work also led to the invention of the mass spectrograph
• Thomson was a physics professor at Cambridge University in the UK
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  Joseph.J. Thomson was also awarded the Nobel Prize in Physics in 1906.
  

Explanation

The charges of Proton, Electron, Neutron respectively are:

• Proton: Positive charge (+1)
• Electron: Negative charge (-1)
• Neutron: Neutral charge (0)

Explanation

Chemiosmosis is the process where ATP is generated by using the energy stored in a proton gradient across a membrane.

In the context of photosynthesis, this proton gradient is established across the thylakoid membrane in the chloroplast. 

Explanation

 While an electron always has an electric field due to its charge, its spin generates a magnetic field.

The motion of a charged particle (even if it's just spinning) creates a magnetic field.