Quiz:Some Basic Concepts of Chemistry Quiz Question 1: A sample of CaCO3 and MgCO3 weighed 2.21 gm is ignited to constant weight of 1.152 gm. What is the composition of the mixture. Also calculate the volume of CO2 evolved at 0°C and 76 cm of pressure.? 539.8 ml 439.8 ml 339.8 ml 239.8 ml Question 2: 0.05 gm of commercial sample of KClO3 on decomposition liberated just sufficient oxygen for complete oxidation of 20 ml CO at 27°C and 750 mm pressure. Calculate % of KClO3 in sample 55.4% 22.5% 65.4% 20% Question 3 : 0.5 gm of fuming H2SO4 oleum is diluted with water.This solution is completely neutralised by 26.7 ml of 0.4 N NaOH. The percentage of free SO3 in the sample is 20.6% 40.6% 30.6% 10.6% Question 4: 34 gm of hydrogen peroxide is present in 1120 ml of solution. This solution will be called 20 volume 10 volume 30 volume 50 volume Question 5: ...

 

  Quiz:Some Basic Concepts of Chemistry Quiz Question 1: What will be the mole fraction of H2SO4 in its aqueous solution with molality 0.1 mol kg^-1? 0.002 0.02 0.01 0.0001 Question 2: What will be the molality of an aq H2SO4 solution if the mole fraction of H2SO4 in this solution is 0.2? 1.389 mol kg-1 1 mol kg-1 13.89 mol kg-1 2 molkg-1 Question 3 : Which of the following concentration term is not temperature dependent? Molarity Mole fraction Normality Mass by volume percentage Question 4: What will be the normality of an aq H2SO4 solution if 9.8 g of H2SO4 is present in 100 ml of solution? 1 2 0.5 3 Question 5: What volume of water must be added to reduce the concentration of aq HCl solution from 0.4 M to 0.1 M if initial volume of solution was 300 ml 900 ml 300 ml 600 ml 100 ml Question 6: Wha...

Quiz:Some Basic Concepts of Chemistry Quiz Question 1: 20 mL of methane is completely burnt using 50 mL of oxygen. The volume of the gas left after cooling to room temperature is? 80 ml 60 ml 30 ml 40 ml Question 2: 10.If 300 mL of a gas weighs 0.368 g at STP. What is its molecular weight? 10.5 g 20.5 g 27.5 g 30 g Question 3 : 61.An organic compound contains C — 40%, H = 13.33% and N = 46.67%. Its emperical formula is? CH4N C2H2N CHN CH2N Question 4: A hydrocarbon on combustion gives 0.88g of CO2 and 0.54 g of H2O, what will be the empirical formula of this hydrocarbon? CH2 CH4 C2H3 CH3 Question 5: If 80 g of CH4 reacts with 160 g of O2 then what amount of CO2 will be formed... 2.5 mol 2 mol 5 mol 10 mol Question 6: If a compound contains 5% sulphur then minimum molecular mass of this compound will be 540 3...

Quiz:Some Basic Concepts of Chemistry Quiz Question 1: What is the smallest part of matter that may have independent existence? Molecule Atom Cation Anion Question 2: Which of the following is the purest form of matter? Element Compound Homogeneous Mixture Heterogeneous mixture Question 3 : Cation is formed when? Electrons are gained Protons are gained Electrons are lost Protons are lost Question 4: Anion is formed when? Electrons are gained Protons are gained Electrons are lost Protons are lost Question 5: Atomic number of an element is equal to the number of ... Protons Neutrons Nucleons Electrons Question 6: Mass number of an element is equal to the number of ... Neutons Protons Electrons Nucleons Question 7: Isotopes contain same number of.... Protons Neutrons Neutron...

  Metallurgical engineering is a branch of engineering that deals with the science and technology of metals and their alloys. It involves the study of the properties and behaviors of metals and how they can be processed, formed, and used in various applications. Metallurgical engineers play a crucial role in the manufacturing industry, as they develop and improve materials used in a wide range of products, from electronics to automobiles. The field of metallurgical engineering is divided into two major areas: physical metallurgy and extractive metallurgy. Physical metallurgy is concerned with the study of the structure and properties of metals and alloys, including their mechanical, electrical, and magnetic properties. Extractive metallurgy, on the other hand, focuses on the processes involved in the extraction and refining of metals from their ores. One of the primary objectives of metallurgical engineering is to understand the behavior of metals under different conditions, such a...

  Petroleum engineering is a field of engineering that involves the exploration, extraction, and production of oil and gas from underground reservoirs. This is a complex and highly technical field that requires a strong understanding of geology, physics, chemistry, and engineering principles. In this article, we will provide a detailed overview of petroleum engineering, including its history, career opportunities, and the skills and education required to succeed in this field. History of Petroleum Engineering Petroleum engineering has been an important field since the early 20th century when oil became a major source of energy for the world. The first oil well was drilled in Pennsylvania in 1859, but it was not until the early 1900s that the petroleum industry really began to take off. With the rise of the automobile industry and the demand for gasoline, petroleum engineers were in high demand to develop new technologies for the exploration and production of oil and gas. Today, pet...

  Marine engineering is a branch of engineering that deals with the design, construction, installation, operation, and maintenance of ships, boats, and offshore structures. It involves a wide range of disciplines, including mechanical, electrical, electronic, and naval architecture, and requires a deep understanding of physics, mathematics, and material science. In this article, we will explore the field of marine engineering in detail. History of Marine Engineering: Marine engineering has a long history, dating back to ancient times when people started building boats and ships for transportation and trade. Over time, as technology advanced, the design and construction of ships became more complex, requiring specialized skills and knowledge. During the Industrial Revolution, marine engineering became a separate field of study, and the development of steam-powered ships marked a significant milestone in the history of marine engineering. Today, marine engineering is a highly special...

  Applied Electronics and Instrumentation Engineering is a branch of engineering that focuses on the design, development, and maintenance of instruments and systems for measuring, monitoring, and controlling various physical parameters such as temperature, pressure, flow, and motion. The field involves the application of electronic, computer, and software technologies to develop systems that improve the efficiency, accuracy, and reliability of industrial processes and scientific research. Some of the areas that Applied Electronics and Instrumentation Engineers work in include industrial automation, robotics, medical devices, communication systems, and control systems for aerospace and defense. They design and implement hardware and software systems to control and monitor the operation of various mechanical and electronic systems. They also develop sensors and transducers to convert physical parameters into electrical signals, which can be analyzed by computer systems to provide rea...

Aeronautical engineering and aerospace engineering are two related but distinct fields of engineering that deal with the design, construction, and operation of vehicles that can operate in the Earth's atmosphere or outer space. Aeronautical engineering focuses on the design and development of aircraft that operate in the Earth's atmosphere. This includes commercial and military airplanes, helicopters, gliders, and drones. Aeronautical engineers are involved in designing and testing aircraft structures, propulsion systems, avionics, and control systems. They also work on improving the aerodynamics of aircraft to make them more efficient and safer. Aerospace engineering, on the other hand, involves the design and development of vehicles that operate in the vacuum of space or in the Earth's upper atmosphere. This includes rockets, satellites, and spacecraft. Aerospace engineers are involved in designing and testing rockets and spacecraft structures, propulsion systems, navigat...

  Electronics and telecommunication engineering is a field of study that combines two different but related subjects – electronics and telecommunication. It involves the design, development, and maintenance of electronic devices and systems that enable communication across different channels, including wired and wireless communication. This field of engineering plays a crucial role in our daily lives, from communication to entertainment, and even medical and industrial applications. The electronics and telecommunication engineering field can be divided into various sub-disciplines. Some of the major sub-disciplines include: Digital electronics: Digital electronics deals with the design and development of digital circuits and systems, which are based on binary numbers. This sub-discipline is crucial in developing various digital devices and systems, such as computers, mobile phones, and digital cameras. Analog electronics: Analog electronics deals with the design and development of ...

Civil engineering is a branch of engineering that is concerned with the design, construction, and maintenance of the built environment. It is an essential field that helps to create and maintain our physical infrastructure, from roads, bridges, and tunnels to buildings, airports, and water treatment facilities. The primary goal of civil engineering is to ensure that the infrastructure and structures that we rely on are safe, efficient, and sustainable. This involves careful planning, design, and construction of projects, as well as ongoing maintenance and management. One of the key areas of civil engineering is structural engineering. This is the study of the behavior and design of buildings, bridges, and other large structures. Structural engineers use their knowledge of physics and materials science to design structures that can withstand various types of loads, such as wind, earthquakes, and traffic. Another important area of civil engineering is transportation engineering. This inv...

  Chemical engineering is a field of study that applies the principles of chemistry, physics, and mathematics to design, develop, and optimize chemical processes and systems that convert raw materials into useful products. Chemical engineers are responsible for designing, constructing, and operating plants that produce a wide range of products, from pharmaceuticals to food and beverage to energy. History of Chemical Engineering: The history of chemical engineering dates back to the 19th century when it emerged as a distinct discipline from its parent field, chemical technology. At that time, chemical engineers were primarily involved in designing processes for the production of chemicals such as sulfuric acid, nitric acid, and ammonia. The early chemical engineers worked in the oil and gas industry, developing processes for the refining of crude oil. As the field of chemical engineering matured, it expanded beyond the production of chemicals to include the design of processes for t...

  Mechanical engineering is a broad field that involves the study of mechanics, thermodynamics, materials science, and other areas. Mechanical engineers design and analyze machines, structures, and systems to meet specific needs and requirements. They work in a wide range of industries, including manufacturing, energy, transportation, aerospace, and biomedical engineering. The main focus of mechanical engineering is on the design, development, and production of mechanical devices, from simple machines such as gears and pulleys to complex systems such as aircraft engines and robots. Mechanical engineers use their knowledge of physics, mathematics, and computer science to develop innovative solutions to complex problems. One of the primary goals of mechanical engineering is to create more efficient machines and systems. Engineers must consider factors such as energy efficiency, environmental impact, and cost when designing new products. For example, they may design a more fuel-effici...

  Electrical engineering is a field of engineering that deals with the study and application of electricity, electronics, and electromagnetism. This field of engineering covers a wide range of subjects, from the design of power systems, communication systems, electronic devices, and circuits to the development of electrical machines, transformers, and motors. Electrical engineering is an important field of engineering as it provides us with the ability to control and use electrical energy. The field has a wide range of applications, including power generation and distribution, communication systems, electronic devices, and many other areas. The field has been instrumental in the development of modern technology, such as computers, mobile phones, and other electronic devices. The field of electrical engineering has evolved over the years, and it has become more specialized with the development of new technologies. There are now several sub-disciplines of electrical engineering, incl...