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 Chemistry Formulas from Rutherford Atomic Model ·         Radius of Nucleus, rn = r0 × A1/3 Where, A = Mass Number,                r0= Proportionality Constant = 1.4 × 10-13 cm ·         Volume of the nucleus = Approx. 10-39 cm3 ·         Volume of the atom = Approx. 10-24 cm3 ·         Density …

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

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

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 …

10 Facts About Earth

Top 10 Interesting Facts About Mother Earth Lets learn 10 interesting facts about mother earth… 1. Earth is the 3rd planet from the Sun.2. About 2/3 of the mother earth is covered by water.3. Age of planet earth is about 4.5 billion years.4. Earth has a moon, which orbiting earth and completes one cycle in …

Analytical Balance

Analytical Balance What is an analytical balance? Analytical balance is a lab-instrument used to determine mass of any matter very precisely. These analytical balances are very sensitive and expensive lab-instruments, and also upon the accuracy and precision of analytical balance the accuracy of lab-analysis result depends so handle these balances very carefully. Generally used analytical …

Catalytic Decomposition of Hydrogen Peroxide H2O2 – Elephant’s Toothpaste Experiment

Catalytic Decomposition of H2O2 – Elephant’s Toothpaste Experiment Elephant’s toothpaste is a foamy substance formed as a result of rapid decomposition of hydrogen peroxide. Elephant’s toothpaste reaction experiment is generally used for classroom demonstrations as it requires fewer ingredients and makes a “volcano of foam”. Description: H2O2 is decomposed by Iodide Ion. Iodide ion is …

Chemical Reaction Quiz Part16

  Chemical Reaction Quiz Science Quiz by www.ChemistryNotesInfo.com Source www.reddit.com This Chemical Reaction Quiz part16 is based on chemical reactions. 1. Chemical reaction always gives- Reactants A change of state A different substance Water All of the above Show Answer 2. From given below, 4-balanced chemical equations, which is example of combustion reaction- 2Mg + …

Chemical Reactions Quiz Part15

  Chemical Reactions Quiz Science Quiz by www.ChemistryNotesInfo.com This Chemical Reactions Quiz part15 is based on chemical reaction. 1. Chemical Reaction, 2H₂O → 2H₂ + O₂ is a- Synthesis Reaction Decomposition Reaction Combustion Reaction Single Displacement Reaction Double Displacement Reaction Show Answer 2. Chemical Reaction, 8Fe + S₈ → 8FeS is a- Synthesis ReactionDecomposition Reaction …