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...