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Test: Non - Metals - SSC CGL MCQ


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15 Questions MCQ Test General Awareness for SSC CGL - Test: Non - Metals

Test: Non - Metals for SSC CGL 2024 is part of General Awareness for SSC CGL preparation. The Test: Non - Metals questions and answers have been prepared according to the SSC CGL exam syllabus.The Test: Non - Metals MCQs are made for SSC CGL 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Non - Metals below.
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Test: Non - Metals - Question 1

What are the key characteristics of non-metals ?

Detailed Solution for Test: Non - Metals - Question 1

The key characteristics of non-metals include being brittle and poor conductors of heat and electricity. These properties differentiate non-metals from metals, which are typically malleable and good conductors of heat and electricity.

Test: Non - Metals - Question 2

What is the only liquid non-metal ?

Detailed Solution for Test: Non - Metals - Question 2

Bromine is highlighted as the only liquid non-metal. This unique characteristic sets it apart from other non-metals like chlorine, xenon, and argon, which exist in gaseous states.

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Test: Non - Metals - Question 3

Which allotrope of carbon is known for being the hardest known substance and a poor conductor of electricity?

Detailed Solution for Test: Non - Metals - Question 3
Diamond is the allotrope of carbon that is renowned for being the hardest known substance and a poor conductor of electricity. Its exceptional hardness makes it valuable in various industrial applications, including jewelry and cutting tools.
Test: Non - Metals - Question 4

What is the primary use of silicon in various industries and applications?

Detailed Solution for Test: Non - Metals - Question 4

Silicon finds extensive use in the production of semiconductors and computer chips due to its unique electrical properties. These materials are fundamental in modern electronics, forming the basis of various technologies we use daily, such as computers, smartphones, and other electronic devices. Silicon's ability to conduct electricity under specific conditions makes it invaluable in the semiconductor industry, driving innovations in computing and technology.

Test: Non - Metals - Question 5

Which element is vital for plant and animal proteins, constituting a significant portion of the Earth's atmosphere?

Detailed Solution for Test: Non - Metals - Question 5

Nitrogen plays a crucial role in the growth and development of plant and animal proteins, essential for sustaining life on Earth. Constituting a significant portion of the Earth's atmosphere, nitrogen is involved in various biological processes, including the creation of amino acids, the building blocks of proteins. Its presence is crucial for the functioning of ecosystems and agricultural practices, emphasizing its importance in maintaining life on our planet.

Test: Non - Metals - Question 6

What is a significant application of oxygen in its ozone form in protecting life on Earth?

Detailed Solution for Test: Non - Metals - Question 6

Ozone in the atmosphere plays a crucial role in protecting life on Earth by blocking harmful ultraviolet (UV) radiation from the sun. This protective layer of ozone absorbs and scatters the majority of incoming UV radiation, preventing it from reaching the Earth's surface in harmful amounts. Without this ozone layer, increased UV exposure could lead to various health issues, including skin cancer and damage to ecosystems, highlighting the critical role ozone plays in maintaining a habitable environment.

Test: Non - Metals - Question 7

What is the most stable form of Sulphur at room temperature?

Detailed Solution for Test: Non - Metals - Question 7

The most stable form of Sulphur at room temperature is Rhombic Sulphur. This allotrope transitions to this form from other allotropes over time, making it the predominant form of Sulphur under normal conditions.

Test: Non - Metals - Question 8

Which compound is known as the "king of chemicals"?

Detailed Solution for Test: Non - Metals - Question 8

Sulphuric Acid (H₂SO₄) is famously known as the "king of chemicals". It is a strong oxidizing and dehydrating agent, and it finds applications in various industries such as fertilizer production, explosives, and drug manufacturing.

Test: Non - Metals - Question 9

Which halogen is discovered by Scheele in 1774 and is always found in nature as chlorides like sodium chloride and potassium chloride?

Detailed Solution for Test: Non - Metals - Question 9

Chlorine, discovered by Scheele in 1774, is always found in nature as chlorides like sodium chloride and potassium chloride. It is a yellow-green, pungent, toxic gas, commonly used as a disinfectant and bleaching agent in various industries.

Test: Non - Metals - Question 10

What is the primary characteristic that distinguishes noble gases from other elements in the periodic table?

Detailed Solution for Test: Non - Metals - Question 10

Noble gases stand out from other elements due to their possession of completely filled valence shells. This characteristic makes them chemically inert and stable. The full valence shell renders noble gases unreactive under normal conditions, which is a unique feature compared to other elements.

Test: Non - Metals - Question 11

Which allotrope of carbon is known for its exceptional conductivity and strength, making it suitable for use in touch screens, LCDs, and LEDs?

Detailed Solution for Test: Non - Metals - Question 11

Graphene, an allotrope of carbon with a one-atom-thick planar sheet structure, is known for its exceptional conductivity and strength. Graphene's unique properties have made it a promising material for various applications, including touch screens, LCDs, LEDs, and other advanced technologies.

Test: Non - Metals - Question 12

What is the most stable and common molecular form of oxygen?

Detailed Solution for Test: Non - Metals - Question 12

The most stable and common molecular form of oxygen is dioxygen (O2). This form of oxygen is characterized by being colorless, odorless, and tasteless. It is essential for supporting combustion and is a key component of the atmosphere, making up approximately 21% of the air by volume. Dioxygen is crucial for aerobic organisms and plays a vital role in various processes, including respiration and combustion.

Test: Non - Metals - Question 13

What is the primary characteristic that distinguishes noble gases from other elements in the periodic table?

Detailed Solution for Test: Non - Metals - Question 13

Noble gases are characterized by their completely filled valence shells, which make them chemically inert. This means they are stable and unlikely to form chemical bonds with other elements. This unique property gives them their name "noble gases."

Test: Non - Metals - Question 14
What compound of carbon is described as a colorless, odorless, and highly poisonous gas that interferes with oxygen absorption in the blood?
Detailed Solution for Test: Non - Metals - Question 14
Carbon Monoxide (CO) is a colorless, odorless, and highly poisonous gas that forms carboxyhemoglobin in the blood, leading to oxygen deprivation. Even low-level exposure to carbon monoxide can result in adverse health effects, making it a serious concern in enclosed spaces.
Test: Non - Metals - Question 15

What is a notable use of phosphine (PH3) in various applications?

Detailed Solution for Test: Non - Metals - Question 15

Phosphine (PH3) is a colorless, toxic gas with a distinctive rotten fish odor, commonly used in applications such as smoke screens and warfare due to its toxic properties. Despite its hazardous nature, phosphine finds use in various industrial processes, including fumigation, where its toxicity can be leveraged for pest control and other specialized applications.

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