InterviewSolution
Saved Bookmarks
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.
| 551. |
Electron taken part in a bond formation |
| Answer» | |
| 552. |
Define F centre . |
| Answer» When electrons occupy the vacant space of anions due to presence of excess of metal ions, are called F-centres. They impart colour to the compound and increase electrical conductivity. | |
| 553. |
Write the iupac name and symbol of the elements with atomic number 149? |
| Answer» Unquadennium | |
| 554. |
Define limited ragent |
| Answer» The reactant that is entirely used up in a reaction is called as limiting reagent. This reactant generally determines when the reaction will stop. The exact amount of reactant which will be needed to react with another element can be calculated from the reaction stoichiometry. | |
| 555. |
How many molecules are there in one mole of air at 100°c |
| Answer» | |
| 556. |
Plz z help me to pass my chemistry compartment exam. I am so nervous??? |
| Answer» | |
| 557. |
State first law of thermodynamics |
| Answer» The energy of an isoloted system is always constant<br>Law of conservation of energy-it states that energy can neither be created nor destroyed<br>The transfer of heat in a system is always equal to sum of its internal energy and work done. | |
| 558. |
Vander waal\'s radius defination |
| Answer» The half of the distance between two non bonded adjacent atom is known as vander waal\'s radius. | |
| 559. |
Explain alkane |
| Answer» Those saturated hydrocarbons which have the tendency to form carbon to carbon atom in a single bond is called as alkane .the general formula of alkane is -CnH2n+2For ex- first memeber of alkane is metane..its general formula is CH4 | |
| 560. |
Isomers of pentene and hexane |
| Answer» CH5=CH3—CH2—CH2—CH2—CH3 Isomers of sturcture of pentane and CH6=CH3—CH2—CH2—CH2—CH2—CH3The hexane its isomers | |
| 561. |
what is malarity |
| Answer» \tMolarity (M) can be defined as the ratio of number of moles of solute to the volume of solution in liter.\tIt can also be defined as the number of moles of solute present in unit litre or cubic decimeter of solution.\tIt is function of temperature due to the dependence of volume on temperature whereas Mass %, ppm, mole fraction and molality are independent of temperature because mass does not depend on temperature.\tMathematically, Molarity = Moles of Solute / Volume of Solution in Litre | |
| 562. |
What is the curriculum for 2019-20 class 12 |
| Answer» | |
| 563. |
Explain why o-nitrophenol has a lower boiling point than p-nitrophenol? |
| Answer» | |
| 564. |
Why ice float on water |
| Answer» Because it has high density | |
| 565. |
Stucture of di phenol |
| Answer» | |
| 566. |
How many subshells or associated with 1H=4 ? |
| Answer» | |
| 567. |
What are hypervalent compounds |
| Answer» | |
| 568. |
Differentiate between isothermal process and isobaric process |
| Answer» Isothermal process is one in which Temperature remains constant throughout.Similarily, Isobaric means pressure remains constant and isochoric means volume remains constant.<br>Due to auto correct isobaric is changed into islamic<br>40 percent efficiency is in monotonic gas<br>In I a other a lot temperature is constant and in Islamic pressure is constant. In isothermal process is very slow and internal energy is also 0 (practically not possible) however in Islamic maximum efficiency is 40 percent as 60 percent is stored as internal energy. Isobaroc process is practically possible. | |
| 569. |
Give sweet suitable reason for the following number a s i f 62 - is known where is CCL 62 - not |
| Answer» | |
| 570. |
is there any change in class 12th syllabus... |
| Answer» I came to know from my teacher that 15% syllabus in chemistry is deducted and in many more subjects.....<br>Ya.....<br>Even I\'d like ti know<br>I also want to know...... | |
| 571. |
How can photochemical smog be controlled |
| Answer» | |
| 572. |
Solid state is added in class 11 or not |
| Answer» How do u say it<br>Yes it is included in class 11<br>yes it is included in class 11th | |
| 573. |
Markovinkon rule |
| Answer» Marconikov rule states that the negative part of the addendum (i.e. : adding molecule )gets attached to the carbon atom which possesses lesser number of hydrogen atoms | |
| 574. |
List the two differences between orbit and orbital |
| Answer» - Orbit is a fixed path along which electron revolves around a nucleus and jence it represents two dimensional motion of electron- Orbital is a three dimensional space around the nucleus where the possibility of finding an electron is maximum and hence it represents three dimensional motion of electron | |
| 575. |
What is meant by pKw of a solution?what is its value at 298K ? |
| Answer» | |
| 576. |
What do you mean by hybridization |
| Answer» Hybridization is defined as the mixing of the atomic orbitals belonging to the same atom but having slightly different energies so that a redistribution of energy takes place between them resulting in the formation of new orbitals of equal energies and identical shapes. The new orbitals thus formed are known as hybrid orbitals.Hybridization of P in PCl5 : sp3d | |
| 577. |
What is bond order? |
| Answer» (no. of bond pair electron - no. of lone pair electron) / 2<br>Bond order=no.of bond present around central atom÷no.of sigma bond | |
| 578. |
For the reaction : 2A(g) +B(g) _ 2D(g), If ∆U= -10.5 and ∆S= -44.1J/k then calculate the value of ∆G |
| Answer» | |
| 579. |
What is hookels law |
| Answer» \tRobert Hooke was the scientist who gave Hooke’s law.\tHooke’s law states that within the elastic limit, stress developed is directly proportional to the strain produced in a body.\tConsider a scenario where we apply external force to the body. As a result stress develops in the body due to this stress there will be a strain produced in the body which implies that there will be some deformation in the body.\tBecause of stress, strain is produced.\tAccording to Hooke’s law, if strain increases the stress will increase and vice-versa.\tThe Hooke’s law is applicable to all elastic substances.\tIt does not apply to plastic deformation.<br>Stress is directly proportional to strain | |
| 580. |
2013 _14 annual exam set AO give me a solve answer this paper questions |
| Answer» | |
| 581. |
What is Fazan\'s rule |
| Answer» It is used to find covalent character in Ionic r/n. | |
| 582. |
What is reaction enthlpy |
| Answer» The change in the the temperature during the conversion in reaction is called reaction enthalpy | |
| 583. |
How much copper can be obtained from 100g of CuSO4? |
| Answer» | |
| 584. |
Carry out the conversion ethane to ethanol |
| Answer» | |
| 585. |
Why liquid diffuses slowly as compared to gases? |
| Answer» Because of more rapid movement of particles in gases ..so gases diffuse quickly | |
| 586. |
Jal ka rasaynik sutra kya hota hai |
| Answer» Jal ka rasaynik sutra H2O hota hai | |
| 587. |
Avogadro sankhya ka Maan kitna hota hai |
| Answer» 6.022 × 10^23<br>S2 ka electronic vinyas | |
| 588. |
Define aufbau principle .which of the following orbits are possible 1p,2s,2p,and 3f |
| Answer» 2s and 2p are possible<br>A/c to aufbau principle electrons are filled in subshell a/c to increasing order of energy<br>2s then 2p are possible among them1p and 3f does not exist..<br>According to this principle, in different subshell of an atom elctrons are filled in increasing order of their energy that is subshell of lower energy is filled first<br>according to aufbau principle electron fill orbitals starting at the lowest available energy levels before the filling of higher levels....<br>Possible orbits is 1p.....if I m wrong then correct me....but I think its correct. | |
| 589. |
Define P- block element |
| Answer» Those elements in which last electron enter in p -orbital.<br>P-block elements are those elements which are basically belongs to group 13 to 18....<br>P block element are those element which has electronshell 2 in their outermost shell | |
| 590. |
Whether halogens apply +I affect or -I affect? |
| Answer» -I effect......hope it helps<br>Yes | |
| 591. |
Arrange b C N O in increasing order of their ionisation enthelapy |
| Answer» B C N O | |
| 592. |
Vander waals equation for n moles |
| Answer» (P - a n2/ v2)(v - nb) = nRt | |
| 593. |
Suggest reasons why the B-F bond lengths in BF3 and BF4- differ |
| Answer» Due to back bonding<br>BF3 ->. Trigonal planar( b.a. -120°)BF4– -> tetrahedral (b.a.-109.5°)Due to reduce in bond angle , bond pair Repulsion increase so, bond length is less in BF4–. | |
| 594. |
Sace lattice |
| Answer» | |
| 595. |
State hund s rule |
| Answer» It states that pairing of e- in an orbital of a particular subshell (s,p,d,f) doesn\'t take part until all the orbital of subshell are singly occupied<br>Hund’s rule states that electron pairing in p, d and f orbitals cannot occur until each orbital of a given subshell contains one electron each or is singly occupied. Hence it accounts for the maximum number of unpaired electron and thus maximum electron spin (electron spin is ½ for each single electron).For eg oxygen has configuration 1s^2 , 2s^2 , 2p^4 therefore in p subshell firstly each orbital will b filled n thn the pairing first 2p orbital will start | |
| 596. |
How to find the valency to the spdf |
| Answer» | |
| 597. |
Derive the relation b/w Kp & Kc ? |
| Answer» Kp=kc(RT)^∆n | |
| 598. |
What is ionic effect? |
| Answer» | |
| 599. |
How many spherical nodes do you expect in a 4s orbital. |
| Answer» 3 spherical nodes because according to the formulaNode =principal no.(n). -1 | |
| 600. |
What did it means that the reaction moves in forward direction or in backward direction ? |
| Answer» Forward rekn means formation of products while backward means the formation of reactant<br>It represents a reversible process where forward is for product and backward is for reactant<br>What means towards the product and backwards means towards the reactant side | |