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.
| 1601. |
What is dielectric.and why water is universal polar solvent?. |
| Answer» | |
| 1602. |
What is the difrence between inductive and electromeric effect...?? |
| Answer» Inductive effect - This is effect of electronegativity, transmitted through intermediate sigma bonds. For example, chloroacetic acid is stronger than acetic acid, because the electron pulling effect of Cl stabilises the accumulation of\xa0negative charge\xa0on the anion.Electromeric effect can be defined as the transfer of electrons from a double bond or an atom with a lone pair of electrons to an adjacent single bond.When the inductive effect and the electromeric effect operate in the same molecule, electromeric effect dominates the inductive effect.\xa0Inductive effect produced due to the pulling of electron towards different atoms. | |
| 1603. |
Ncert question papers |
| Answer» In this app u get it otherwise google it | |
| 1604. |
What is the effect of increasing temperature on surface tension? |
| Answer» Decrease in surface tension. | |
| 1605. |
Explain the term hybridisation breifly? |
| Answer» Yes<br>intermixing of different energy orbital and make another orbital of same energy.<br>Hybridisation is the intermixing of two or more hybrid orbitals . | |
| 1606. |
Anybody from gkp up |
| Answer» Good supriya shukla jii<br>Mee?<br>Gorakhpur Uttar pradesh<br>Kta matlab | |
| 1607. |
Why sigma bond is stronger than pi bond? |
| Answer» Pie bond is weaker bond because there is head to head overlapping takes place<br>Sigma bond is stronger than Pi want because there is less overlapping due to Parallel combination of pi bonds | |
| 1608. |
Why lithium and magnesium show diagonal relationship |
| Answer» The similarity between Li and Mg is because of their similar atomic radii (Li = 152 pm; Mg = 160 pm) and ionic radii. (Li+\xa0= 76 pm, Mg2+ \xa0= 72 pm).These two elements resemble each other in the following properties:(i) Both Li and Mg decompose water very slowly with the liberation of hydrogen.(ii) Both Li and Mg form nitrides - Li directly and Mg on burning in nitrogen.(iii) LiOH and Mg(OH)2 are weak bases.(iv) Nitrates of both decompose on heating to give oxides.\xa0<br>Because there property are match with each other. | |
| 1609. |
Why ethanol soluble in water |
| Answer» Water is a polar solvent and has hydrogen bonding , so for any other compund to dissolve in water , it must posses Polarity or H-Bond. Ethyl alcohol shows presence of hydrogen bonding as well as it is polar due to high EN of oxygen , due to this it is soluble in water.<br>Due to the presence of hydrogen bond | |
| 1610. |
why hydrogen flouride gas exist as dimer? |
| Answer» Due to H- bonding | |
| 1611. |
average kinetic energy of gas derivation |
| Answer» | |
| 1612. |
Important TOPICS IN THERMODYNAMICS FOR HALF YEARLY.........ANYONE ?plss |
| Answer» Only hess\'s law..........!!what about theory which may come.........?<br>Most important topic in thermodynamics is hess\'s law numericals.100% chances your teacher is take the question about the hess\'s law in half yearly exam.<br>Process | |
| 1613. |
plese tell me chemistary syllabus of class 11 |
| Answer» First book for half yearly nd both the books.... i.e first and second book in final. | |
| 1614. |
please tell the syllabus of equilibrium class 11 chemistry |
| Answer» Whole chapter | |
| 1615. |
Which is the alphabrt not used in periodic table |
| Answer» W is present in periodic table tungsten W<br>J<br>W is also not present<br>that the letter "Q" does not appear in any official element names. Temporary element names, such as ununquadium, contain this letter. And J is also not present | |
| 1616. |
Draw the hybridisation and shape of ClF3 on the basis of VESPER theory. |
| Answer» T shaped structure | |
| 1617. |
Draw molecular orbital diagram of peroxide ion. Predict its bond order and magnetic character. |
| Answer» Bond order =( nb-na)/2=(6-1)/2=2.5.paramagnetic. | |
| 1618. |
What is full form of STAP ? |
| Answer» It is SATP. (STANDERD AMBIENT TEMPERATURE AND PRESSURE<br>its STAP<br>It\'s is STP NOT STAP<br>Standard temperature and pressure | |
| 1619. |
Does zinc have variable valency? If yes then what r the values? |
| Answer» Yes . The velencies are 2and 3 | |
| 1620. |
Equal volume of 0.02M CaCl2 qnd 0.0004M NaSo4 are mixed. Will a precipitate of CaSO4 WILL formed |
| Answer» The ionic product of CaCl2 and NaSO4 concentration is = 0.02 * 0.0004=0.000008 = 8 × 10 to the power -3Ksp value of CaSO4 = 2.4 × 10 to power -5 (Given)Since,the value of ionic product is less than Ksp value, CaSO4 will not be precipitate.<br>Because this question asked in half yearly exam 2018-19 of class 11 Patna Region<br>R u from KV | |
| 1621. |
Which has high lattice energy and why?CSF CsCL CsBr Csl |
| Answer» | |
| 1622. |
How find which element is more electronegative |
| Answer» Electronegativity varies in a predictable way across the periodic table. Electronegativity increases from bottom to top in groups, and increases from left to right across periods. Thus, fluorine is the most electronegative element, while francium is one of the least electronegative. | |
| 1623. |
Define equilibrium |
| Answer» In a chemical reaction chemical equilibrium is defined as the state at which there is no further change in concentration of reactants and products.<br>When net force on a body is 0 ,the body is said to b in equilibrium | |
| 1624. |
When zinc hydroxide react with sodium |
| Answer» NaOH is formed | |
| 1625. |
The mass of 2 gram atoms of calcium |
| Answer» Since mass of 1 gram atom of calcium 40gSo mass of 2 gram atoms of calcium.=40×2=80g | |
| 1626. |
What r farmula for work done to given different pressur in thermodynamics? |
| Answer» 2.303 log p2/p1 | |
| 1627. |
The pressure ratio of o |
| Answer» <color=blue>hhh | |
| 1628. |
On the basis of bond order predict whichbof the followinf species is the mist stable O2-,O2,Ne2+ |
| Answer» Those species have less bond order are less stable and those have more bond order are more stable<br>I think O2...... | |
| 1629. |
Similarities with Group 1 elementsWrite 5 points |
| Answer» Alkali metals are highly reactive in nature, which is why they manifest themselves in combination with other elements, in nature. Most of these metals are easily soluble in water, which makes their extraction quite easy. All alkali metals show a silver-like lustre, which makes them appear shiny. They are highly ductile and conduct electricity without any trouble.All alkali metals have a very low melting point and the alloys of such alkali metals display even lower melting points. They react most easily with the oxygen in the atmosphere and water vapor. They are also capable of reacting quite vigorously to form hydrogen gas and strong caustic solutions. | |
| 1630. |
What are the important formulas for chapter chemical thermodynamics |
| Answer» q=u+w/q=u +pvH=U+PVG=H-TSCp-Cv=R<br>All are important......? | |
| 1631. |
What is the difference between Valency and Oxidation number????? |
| Answer» \tValenceyOxidation Number1. It is the combining capacity of an element in terms of the number of hydrogen atoms with which the element may combine e.g. valency of S in H2S is 2 and that of N in NH3 is 3.1. It is the charge which an atom of the element has or appears to have when present in the combined state with their atoms e.g. oxidation number of N in HNO3 is +5.2. It is purely a number and has no plus or minus sign associated with it. e.g. valency of N in NH3 is 3 and that of H is 1.2. It is always assigned plus or minus sign except when it is zero e.g. oxidation number of N in NH3 \xa0is -3 and that of H is +13. It is always a whole number.3. It may not always be a whole number but may be fractional also. The e.g. oxidation number of Fe in Fe3O4 \xa0is +8/3.\t\xa0 | |
| 1632. |
What is the oxidation no. Of chlorine in CaOCl2 |
| Answer» If we take Cao then we will get the oxidation state of calcium Let oxidation state of calcium be xX+1(-2)=0X-2=0X=2Now we take CaOCl2 So, 2+1(-2)+2=0X=0This is the the oxidation state of 2chlorine atoms. If we break CaOCl2 we will get: Ca(oH)2+H-ocl+HclIn H-ocl,1+1(-2)+x=0X=1(x is the oxidation state of chlorine)In Hcl, 1+x=0X=-1This we got the oxidation state of chlorine that is +1and -1 | |
| 1633. |
What is the oxidation no. Of C |
| Answer» So unlike metals, which are almost always in a positive oxidation state, the oxidation state of carbon can vary widely, from -4 (in CH4) to +4 (such as in CO2). | |
| 1634. |
Electron gain enthalapy of group 17 or halogen family is more negative i.e. highest .Why? |
| Answer» The valence shell electronic configuration of the halogens is ns2np5 and such away they require only single electron to gain the stable noble gas configuration is ns2np6 so there electron gain enthalpies ate highly negative | |
| 1635. |
Calculate the formal charge on each atom of carbonate ion and sulphur dioxide molecules |
| Answer» | |
| 1636. |
What is amorphas |
| Answer» If groups of atoms are not given a chance to average themselves in proper order say by checking their mobility at low temperature, amorphous solids are formed, e.g., amorphous carbon.The solids in which the constituent particles of matter are arranged in a random manner are called amorphous solids. It is a non-crystalline solid with no proper arrangement of atoms in the solid lattice. In other words, we can define amorphous solids as materials which don’t have certain organized arrangement of atoms and molecules. Most solids are amorphous in nature and are utilized in many sectors as well. One of the most common examples of amorphous solids is glass, which is used widely in the manufacturing sector. | |
| 1637. |
Calculate mole fraction of urea and water if 2g urea dissolved in 31.4g aquous solution. |
| Answer» | |
| 1638. |
What is word root in catecolamine. |
| Answer» | |
| 1639. |
What is cantenation(self combination) in carbon. |
| Answer» Long. not lomg<br>Lomg chain of carbon compound . | |
| 1640. |
What is oxidised redused |
| Answer» | |
| 1641. |
What is iupc |
| Answer» IUPAC- INTERNATIONAL UNION OF PURE APPLIED CHEMISTRY<br>IUPAC-Interantional Union of Pure and Applied Chemistry<br>International union of physical and applied chemistry | |
| 1642. |
Why water is not flameable |
| Answer» Water is made up of two elements, hydrogen and oxygen. Hydrogen is flammable, but oxygen is not. Flammability is the ability of a combustible material with an adequate supply of oxygen (or another oxidiser) to sustain enough heat energy to keep a fire going after it has been ignited. | |
| 1643. |
What is the effect of temperature on viscosity of liquids |
| Answer» | |
| 1644. |
What is kolby |
| Answer» | |
| 1645. |
B2 H6 belong to which hydride |
| Answer» Metallic hydride and electron-deficient<br>Hybridusation is only possible for even no of valence electrons .As there are total 9 valence eletrons present so there is no hybrid state .....it is not applicable for odd no of electrons | |
| 1646. |
Atomic number of c |
| Answer» Bhul gya tha bhai ******hota hai tensionat lena<br>Chaka bhai jo tum hai????<br>6 ofcourse<br>6<br>6<br>Carbon 6<br>- | |
| 1647. |
How many atoms are present in 30gm of caco3 ? |
| Answer» 1.8069×10to the power 23 | |
| 1648. |
why electromagnetic atoms are connected to the axis position of centre atom in a bond? |
| Answer» | |
| 1649. |
Total no.of sigma and pi bonds in c2h2 molecule |
| Answer» 2pi and 3sigma<br>3sigma and 2pi bond<br>3 sigma n 2 pi bonds are present in c2h2<br>1 sigma 2 pi | |
| 1650. |
Why endothermic reactions are favoured at high temperature? |
| Answer» According to le Charlie\'s principal | |