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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your Class 11 knowledge and support exam preparation. Choose a topic below to get started.
| 5051. |
What are ideal gases and real gases |
| Answer» Any gas which obey\'s the Charles law and boyle\'s law os called as ideal gases..<br>1.Ideal gas has no definite volume while real gas has definite volume.2.Ideal gas has no mass whereas real gas has mass.3.Collision of ideal gas particles is elastic while non-elastic for real gas.4.No energy involved during collision of particles in ideal gas. Collision of particles in real gas has attracting energy.5.Pressure is high in ideal gas compared to real gas.6.Ideal gas follows the equation PV=nRT. Real gas follows the equation (P + a/V2) (V – b) = nRT.\xa0 | |
| 5052. |
Give me 15 Lewis dot structure molexules |
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| 5053. |
NH4CL what will be the bonding |
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| 5054. |
Name the element which hybrid in the fully filled or vacant orbital |
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| 5055. |
What is azimuthal Quantum no. |
| Answer» It is a quantum no which describe about the s p de subshell denoted by l | |
| 5056. |
What is hypercojucation |
| Answer» Hyperconjugation\xa0is the stabilising interaction that results from the interaction of the electrons in a σ-bond (usually C-H or C-C) with an adjacent empty or partially filled p-orbital or a π-orbital to give an extended molecular orbital that increases the stability of the system. | |
| 5057. |
Shielding effect |
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| 5058. |
Why Kelvin is never negative?? |
| Answer» On the\xa0Kelvin\xa0scale the coldest temperature possible, -273oC, has a value of 0\xa0Kelvin\xa0(0 K) and is called the absolute zero. Because there are no lower temperatures than 0 K, the\xa0Kelvin\xa0scale does not have\xa0negative\xa0numbers. | |
| 5059. |
Define Organic chemistry . |
| Answer» Organic chemistry- This branch of science deals with study of carbon compounds especially hydrocarbons and their derivatives. | |
| 5060. |
How find spin quantum number |
| Answer» In one orbital, the orientation of the two electrons are always the opposite of each other. One electron will be\xa0spin\xa0up, and the other electron is\xa0spin\xa0down. If the last electron that enters is\xa0spin\xa0up, then ms = +1/2. If the last electron that enters is\xa0spin\xa0down, then the ms = -1/2. | |
| 5061. |
What is ionisation anthalpy |
| Answer» The amount of energy required to remove an electron from the valence shell of the isolated gaseous atom.<br>The energy needed to remove electron from outermost shell of an atom in gaseous state | |
| 5062. |
What is meant by NTP, STP, HTP?? |
| Answer» STP is standard temprature pressureNTP is normal temperature pressureHTP is high temperature pressure | |
| 5063. |
What is the difference between orbit& orbital |
| Answer» Orbit is the circular path where electrons revolve around the nucleus and orbital is the region where the probability of finding electrons is maximum. | |
| 5064. |
Explain why cations are smaller and anions are larger in radii then their parent atom |
| Answer» Cations are always smaller than their parent atoms this is because they have lesser electrons, while their nuclear charge remains the same. The remaining electrons are, therefore held more tightly by the protons in the nucleus and thus their radii. are smaller than the parent atoms. This is opposite in the case of anions. | |
| 5065. |
Diffrence between molerity and molelity with formula and example |
| Answer» Molarity is no.of moles of solute dissolved in 1 litre of solution whereas Molality is the no. Of moles of solute upon wt.. Of solvent in kg | |
| 5066. |
Calculate the mass of 1 hydrogen molecule in grals |
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| 5067. |
C6H5COCH3 |
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| 5068. |
In given formula mvr=nh/2π what is hear mv |
| Answer» Here ,mv is mass ×velocity or plancks constant | |
| 5069. |
Importance of significant figure |
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| 5070. |
From 200 mg of co2,10the power21 molecules are removed. how of moles of co2 are left |
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| 5071. |
How learn priodic table |
| Answer» We learn periodic table by giving funny name For example : he Lina Na ke rb Cse frayad He =heliumLina= lithium Na = sodium Ke = potassium Rb = Rubidium Cse=cesium Frayad = francium | |
| 5072. |
How to learn modern perodic table |
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| 5073. |
How to do numericals |
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| 5074. |
atoms have more energy or molecules have more energy why |
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| 5075. |
One mole of co2 contains |
| Answer» 1 mole is 22 gram electrons and 6.022 *1023 atoms of carbon contains (you should say and asked some question OK I Divya ,) | |
| 5076. |
What are the two classifications of batteries? what is the difference between them? |
| Answer» Classifications of batteries:(a) Primary batteries (b) Secondary batteriesPrimary batteries are non-chargeable batteries whereas secondary batteries are rechargeable. | |
| 5077. |
Bod and COD |
| Answer» Bod is similar in function to chemical oxygen demand (cod) , in that both measure the amount of organic compounds in water. Cod is less specific,since it measures everything that can be chemically oxidized rather that just levels of biodegradable organic matter | |
| 5078. |
What is the molarity of water |
| Answer» Let\'s say you had 1 L of water. At 25∘C, the density of water is 0.9970749 g/mL, so that\'s 0.9970749 kg.At that amount of water, the number of moles is997.0749 g18.0148 g/mol=55.348 molsmolality:mol waterkg water = 55.348 mols0.9970749 kg=55.50991407≈55.510 mmolarity:mol waterL water=55.348 mols1 L≈55.348 M<br>55.55 M | |
| 5079. |
List the differences between orbits and orbital |
| Answer» <colgroup> <col /> <col />\t</colgroup>\tOrbitsOrbitals\xa0Orbit is a well-defined circular path around the nucleus in which electrons revolve around the nucleus.3-dimensional space around the nucleus where is probability of finding an electron is maximum is called an orbital.\xa0It represents the motion of an electron in one plane.\xa0It represents motion of an electron in three-dimensional space.All the orbits are either circular or elliptical.\xa0Orbitals are of different shapes such as spherical, dumbbell and double dumbbell. In an orbit one, two or more than two electrons can be present. In an orbit number of electrons can be 2n2 where ‘n’ is number of orbit or principle quantum number.\xa0In one orbital maximum two electrons can be filled.\xa0Orbits are non-directional in nature.\xa0Orbitals are directional in nature except s-orbitals which are spherical in shape.\xa0Orbits represent that position and momentum of an electron can be measured simultaneously with certainty. Which is against Heinsberg’s principle.\xa0Orbitals concept completely complies with Heinsberg’s uncertainty principle.\xa0Atomic Structure showing Orbit\xa0Shapes of s, p, d and f-orbitals\t | |
| 5080. |
Define vanderwall equation? |
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| 5081. |
About atomic radius |
| Answer» The\xa0atomic radius\xa0of a chemical element is a measure of the size of its\xa0atoms, usually the mean or typical distance from the center of the nucleus to the boundary of the surrounding cloud of electrons. | |
| 5082. |
Numericals related to malarity ,molality and mole fraction |
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| 5083. |
How to find r closest in atom |
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| 5084. |
What is hydrisation |
| Answer» Hybridisation is the concept of mixing atomic orbitals into new hybrid orbitals (with different energies, shapes, etc., than the component atomic orbitals). | |
| 5085. |
Lattice enthalpy |
| Answer» Energy release in decompose of 1 mole compound | |
| 5086. |
How I prepare 1st three chapters of chemistry 11 class |
| Answer» Step 1- Read short notes from this site.Step 2- Read chapter from ncert.Step 3- Try to solve problems.Step 4- If you are not able to solve them then watch video regarding that content. | |
| 5087. |
Why molecular orbitals are more stable than atomic orbital? |
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| 5088. |
What is polarisability |
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| 5089. |
What is electronic configuration?? |
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| 5090. |
Explain various pereodic trend in element |
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| 5091. |
Term polyatomic |
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| 5092. |
Why Rutherford choose only gold foil in his model of atom?? |
| Answer» Gold foil is very thin and it can be drawn into very very thin sheet as it has high melleable property apha particles may easily pass through gold foil it can be observed easily while in other elements foil would not be so thin they could not observe why alpha particle deflect, gold foil made the observation so easy to study . | |
| 5093. |
Difference between elements,compounds,molecule |
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| 5094. |
Difference between electron gain ethalpy and electronagitivity |
| Answer» <div id="answer-description" itemprop="description">Electronegativity is defined as the tendency of the atom of an element in a chemical compound to attract a shared pair of electrons towards it in a covalent bond.A number of electronegativity scales are present. These include Pauling scale, Milliken-Jaffe scale, Allred Kochow scale etc. Out of these scales, Pauling scale is usually used in which fluorine (the most electronegative element) was arbitrarily assigned a value of 4.0.Electron gain enthalpy is defined as the enthalpy change when a neutral gaseous atom takes up an extra electron to form an anion.Electron gain enthalpy is the tendency of an isolated gaseous atom to accept an additional electron to form a negative ion. Electronegativity is the tendency of the atom of an element in a chemical compound to attract a shared pair of electrons towards it in a covalent bond.Electronegativity is a qualitative measure. It is not a measurable quantity.However, electron gain enthalpy is a quantitative measure. It is a measurable quantity.</div> | |
| 5095. |
A jug contains 2 L of milk. Calculate the volume of the milk in m cube. |
| Answer» 1L= 1/1000m cube. So 2L = 0.002 m cube | |
| 5096. |
What is amu |
| Answer» amu means Atomic mass unit. | |
| 5097. |
How many type of states of matter in atmosphere. |
| Answer» There are five known phases, or states, of matter: solids, liquids, gases, plasma and Bose-Einstein condensates. The main difference in the structures of each state is in the densities of the particles. | |
| 5098. |
What do you understand by limiting reagents |
| Answer» The limiting reagent (or limiting reactant) in a chemical reaction is the substance that is totally consumed when the chemical reaction is complete. The amount of product formed is limited by this reagent, since the reaction cannot continue without it. | |
| 5099. |
Why 4bond is not possible? |
| Answer» | |
| 5100. |
Which of the following ions is smallest,why?N3-,O2-,F- |
| Answer» F- | |