Major portion of the earth's crust is mainly constituted by

Silicon and Iron

Silicon and Aluminium

Oxygen and Silicon

Oxygen and Iron

Correct Answer : Oxygen and Silicon

Silicon 28%, aluminum 8.2%, iron 5.6%, calcium 4.2%, sodium 2.5%, magnesium 2.4%, potassium, 2.0%, and titanium 0.61% also comprise the crust. Given the abundance of oxygen and silicon, the silicates are the most abundant minerals in the earth's crust.

Published On : June 11, 2021

Recent Updates in Science and Technology - General Knowledge Questions

Q .

What is the temperature that NASA's Parker Solar Probe withstood while flying closer to the Sun?

800�C

982�C

1050�C

1200�C

Correct Answer : 982�C

* NASA's Parker Solar Probe set a historic record by flying closer to the Sun than any other man-made object, withstanding temperatures up to 982°C.

* This is a remarkable achievement, demonstrating the probe's advanced heat shield technology.

* The Parker Solar Probe's mission aims to explore the Sun's corona, investigate solar winds, and understand the Sun's energy flow.

Published On : December 29, 2024

Category : Science and Technology

Q .

Which country is advancing its quantum communications experiments and plans to launch a quantum satellite?

China

Russia

India

United States

Correct Answer : India

* India is making significant strides in the field of quantum communications through its National Quantum Mission (NQM).

* As part of this mission, India aims to launch a quantum satellite in the next 2-3 years, which will use quantum physics to secure communication signals, making them resistant to interception.

* This initiative will position India at the forefront of next-generation technology in secure communication.

* Quantum Key Distribution (QKD), an essential component of this satellite, ensures "unconditional security" by detecting any eavesdropping attempts.

* India’s advancements in quantum research are paving the way for the future of secure global communication.

Published On : December 26, 2024

Category : Science and Technology

Q .

What is the primary focus of the TTDF-funded project awarded to Amantya Technologies?

AI-driven IoT devices

Telecom infrastructure

Advanced semiconductor design

Satellite communication systems

Correct Answer : Telecom infrastructure

* The TTDF-funded project awarded to Amantya Technologies focuses on developing a carrier-grade 5G SA Core compliant with 3GPP Release 16/17 standards.

* It supports features like network slicing, Quality of Service (QoS), Voice over New Radio (VoNR), and massive Machine-Type Communication (mMTC).

* This initiative is part of the Atmanirbhar Bharat mission to enhance India's telecom infrastructure and foster self-reliance in cutting-edge technologies.