Hydrogen and its compounds MCQs Part 21

Hydrogen And Its Compounds MCQ MCQ-1.  Hydrogen from HCI can be prepared from :   P   Mg   Hg   Cu Show Answer MCQ-2.  Commercial hydrogen is obtained from :   Producer gas   Marsh gas   Oil gas   Coal gas Show Answer MCQ-3.  Oxygen is used to purify water since it : …

General Organic Chemistry MCQs Part 20

General Organic Chemistry MCQs MCQ-1.  The shortest C – C bond distance is found in :   Ethane   Benzene   Diamond   Acetylene Show Answer MCQ-2.  Which of the following forces is strongest among the following ? :   Dipole-dipole forces   H-Bonding   All equal   Vander Waals forces Show Answer MCQ-3.  Which …

Science Quiz: Purification and analysis of organic compounds MCQ Part 19

Purification and analysis of organic compounds MCQ These are some of the random multiple question answers from Purification and analysis of organic compounds… 1. Anthracene is purified by which method :   Distillation   Sublimation   Filtration   Crystallisation Show Answer 2.  A bottle containing two immiscible liquids. These liquids may be separated by using a : …

Class 11 Chapter 6 – Thermodynamics

Class 11 Chapter 6: Thermodynamics System:             A system is that part of universe in which we made observations is called system. Surroundings:             All remaining part of the universe, other than system is called surroundings. Universe = System + Surroundings Types of System:             The system is classified on the basis of movement of …

Heat and Temperature

Heat and Temperature in Hindi

Chem Lovers, today we learn about heat and temperature. Also, try to solve general chemistry questions related to heat & temp. like, what is heat? what is temperature? what is difference between heat & temp. If you want to learn in Hindi then, read our Heat, Temp. in Hindi ताप और तापमान What is Heat? …

Structure of Atom Class 11 MCQ

Chemistry Videos

Structure of Atom MCQ These are some of the random multiple question answers from Structure of Atom…  1. Who discovered anode rays :  Goldstein Rutherford J. Stanley J. J. Thomson Show Answer 2. Neutron was discovered by :  Rutherford Chadwick Austin  Langmuir Show Answer 3. Radioactive isotope of hydrogen has ________ number of neutrons :  0  1  2  3 Show Answer 4. Cathode rays …

Some Basic Concepts of Chemistry Class 11 MCQ

Some Basic Concepts of Chemistry Class 11 MCQ These are some of the random multiple question answers from Some Basic Concept of Chemistry… 1. If a matter has definite volume and definite shape, then it is : SolidLiquidGasAll of the Above Show Answer 2. Mole is SI unit of : CurrentTemperatureAmount of Substance Luminous intensity …

Chemistry Formulas for Chemical Bonding

Chemistry Formulas for Chemical Bonding      1.       Necessary condition for an ionic solid to be dissolved in water                                 Hydration Energy > Lattice Energy    2.       Order of melting and boiling points of certain compounds NaF > NaCl > NaBr > NaI;    MgO > CaO > BaO 3.       No Bond is 100% Ionic …

Science Quiz : Acids and Bases Chemistry MCQs Part 18

Science Quiz : Acids and Bases Chemistry MCQs Science Quiz by www.ChemistryNotesInfo.com These are some of the random multiple question answers from Acids and Bases Chemistry… 1. OH– ion is called as: Hydronium IonHydroxide IonHydrate IonHydrogen Ion Show Answer 2. Taste of acidic food is: SweetSaltySourBitter Show Answer 3. H+ Ion (Hydrogen Ion) is simply …

What are the factors which favor formation of ionic bonds?

What are the factors which favour formation of Ionic Bonds? These are the factors which favours formation of ionic bonds… 1. One of the atoms i.e. Metal atom must have low ionization energy, so that it can easily lose its electrons. 2. Other atoms i.e. Non-Metal atoms must have high electron affinity, so that it can …

Chemistry Formulas for Nuclear Chemistry (Radioactivity)

Chemistry Formulas for Nuclear Chemistry (Radioactivity) Empirical relationship between size of nucleus and its mass number is             R = R0A1/3 Where,                                    R = radius of nucleus,             A = mass number,             R0 = contestant = 1.4×10-13cm Rate of Decayof radioactive substance Where,             K = decay constant,             N = No. …

Chemistry Formula for Atomic Structure Part 2

Chemistry Formulas for Atomic Structure Chemistry Formulas from Bohr’s Model of Atom ·         Angular momentum of electron in nth orbit Where, m = Mass of the electron,             v = velocity of electron,             r = radius of the orbit,             h = Planck’s constant,             n = no. of orbit in which electron is …

Chemistry Formulas for Structure of Atom Part 1

Chemistry Formulas of Structure of Atom Chem Lovers! These notes contain chemistry formulas of structure of atom. i.e. atomic structure formulas. These formulas are are taken from all class books, pdf and reference books so, useful to all students.  Chemistry Formulas from Rutherford Atomic Model ·         Radius of Nucleus, rn = r0 × A1/3 Where, …

Chemistry formulas for Atoms, Molecules and Chemical Arithmetic Part II

Chemistry formulas for Atoms, Molecules and Chemical Arithmetic Part II Gram Atomic Weight (GAW) related Chemical Formulas ·         No. of Gram Atoms or Mole Atoms = Weight of an Element/GAW ·         Weight of an Element in gram = No. of Gram Atoms x GAW ·         No. of atoms in 1 GAW = 6.02×1023 ·         No. …

Chemistry formulas for Atoms, Molecules and Chemical Arithmetic Part I

Chemistry formulas for Atoms, Molecules and Chemical Arithmetic Part I Atomic Weight related Chemical Formulas ·         Atomic Weight of an Element = Weight of an average Atom of that Element/ (1/12)x Mass of an element of C12 ·         1 a.m.u. = 1.66×10-24g ·         Atomic Weight = Gram Atomic Weight (GAW) ·          1 Gram Atomic Weight …

Carbonate Chemical Formula

Carbonate Chemical Formula and Description Carbonate It is a salt of the Carbonic Acid characterized by the presence of carbonate ion. Carbonate is a poly-atomic ion with the formula of CO2−3 Chemical Formula of Carbonate Carbonate CO2−3 Structural Formula of Carbonate Chemical Properties of Carbonate Metal carbonates decomposes on heating. Example of S-Block Carbonates H2CO3, …

Famous Scientists and their Inventions

famous scientists and their inventions

Famous Scientists and Their Important Research & Inventions in the Field of Chemistry Given below is the list of scientists and their inventions & important research. These famous scientists or chemists perform many science and chemistry experiments. Contribution of these scientists help in the development of Chemistry and Science.   List of Famous Scientists and their …

Pharmaceutical Chemistry MCQs Part17

Pharmaceutical Chemistry MCQs Science Quiz by www.ChemistryNotesInfo.com These are some of the random multiple question answers from Pharmaceutical Chemistry… 1. Sulfonamide metabolism in human body is carried out by: OxidationConjugationMethylationAcetylation Show Answer 2. H2 gas is produced, when ______ is added to water: LiHCH4NH3H2S Show Answer 3. _____ is Anti-hypertensive drug with a Tetrazole ring: …

Humidity

What is Humidity? The simple meaning of humidity is ‘atmospheric moisture’ or ‘amount of water vapor in the atmosphere’.  Humidity is the amount of water vapors present in the atmosphere (or air). Water vapors are the gaseous state of water and are invisible.  Humidity can be measured by three ways that are: absolute, relative and …

Pharma Interview Questions Answers

General Questions Answers asked during interview in pharmaceuticals manufacturing companies Question: What is GMP?Answer: GMP is a system for ensuring that products are consistently produced and controlled according to quality standards. It is designed to minimize the risks involved in any pharmaceutical production that cannot be eliminated through testing the final product. Question: What is …