InterviewSolution
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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.
| 2501. |
Calculate [h3o+] and [oh-] for blood serum , the pH of which is 7.4 |
| Answer» | |
| 2502. |
Which element is highly electronegative? |
| Answer» Florine<br>Fluorine is the most electronegative element. | |
| 2503. |
Is intermolecular force and intermolecular interaction is same?? |
| Answer» No beta<br>No | |
| 2504. |
Easy way for do reactions of chap hydrocarbons class 11 |
| Answer» | |
| 2505. |
Difference between ionisation energy and electron gain enthalpy |
| Answer» Ionisation enthalpy is the energy which are used in loss of electrons and electron gain enthalpy is the energy which are used in gain of electrons | |
| 2506. |
What is hydride gap in hindi |
| Answer» | |
| 2507. |
What is the ph of pyridine |
| Answer» 9.24 | |
| 2508. |
Name the product formed when vapours of ethyne are passed through HCL |
| Answer» benzene (C6H6) | |
| 2509. |
45 square |
| Answer» (45) ^2 = 2025. | |
| 2510. |
How many moles of Ethane are required to produce 22 gram of Co2 after combustion |
| Answer» 1 molecule C2H6 (30 g) always gives 2 molecules CO2 (88 g). Therefore, mass of Ethane required for 22 g CO2 = 30 × 22 / 88 = 7.5 g. // No of moles of C2H6 = 7.5/30 = 0.25 mol. //<br>hlo mam | |
| 2511. |
Define 2nd law of thermodynamics. |
| Answer» Second law of thermodynamics says that universe as a increase enthropy because the universe is become huge every year<br>Alkali metals are those metal which have only electron in outermost of the cell<br>Li (Lithium) , Na (Sodium), K (Potassium), Rb (Rubidium) , Cs (Caesium) , Fr (Francium) .<br>Alkali metals kise kha jata hai<br>The second law of thermodynamics means hot things always cool unless you do something to stop them. | |
| 2512. |
Important topic to study in chapter 5,6,8,9,11Please help me |
| Answer» Subject | |
| 2513. |
To prepare a crystal of pure copper sulphate from a given impure sample of blue vitriol |
| Answer» | |
| 2514. |
Give the iupac name to given structureCH3–CH2–CH2–O–CH(CH3)–CH3 |
| Answer» Isopropyl propyl ether. | |
| 2515. |
Differentiate between pi and sigma bond |
| Answer» Pi bond is weak bond but sigma bond is strong bond and pi bonds are formed by side to side overlapping but sigma bond is formed by head to head overlapping<br>Pi bond exist independently but sigma bond not exist independently it always exist with pi bond and pi bond is stronger than sigma bond<br>bond = Formed by lateral or side wise overlapping of atomic orbitals such that direction of overlap lies perpendicular to the axisσ bond = Formed by axial overlapping or end to end overlapping of atomic orbitals, along internuclear axis. It is more of stronger.<br>σ bond = Formed by axial overlapping or end to end overlapping of atomic orbitals, along internuclear axis. It is more of stronger. There is proper distribution of electron density across the internuclear axis. Present mostly as SINGLE bonds between atoms. π bond = Formed by lateral or side wise overlapping of atomic orbitals such that direction of overlap lies perpendicular to the axis. It is more weaker than σ bonds. They are usually present as multiple bonds alongside single bonds. Electron density is distributed in an unorganized manner. | |
| 2516. |
How Group 1 elements reacts with water |
| Answer» Group 1 elements reacts vigorously with water and release hydrogen gas. | |
| 2517. |
How group 1 elements show reactivity towards air |
| Answer» | |
| 2518. |
Write definition of hybridization |
| Answer» Hybridization is the process of intermixing of two same or nearly same orbitals<br>Hybridization is nothing<br>It is the process of intermixing of atomic orbitals of similar sizes and enthalpies so as to redistribute their energies and form new set of orbitals with better efficiency to form bonds.<br>Concept of mixing atomic orbital Into new hybrid orbitals | |
| 2519. |
What are electropositive atom |
| Answer» Electropositive Ions are ions which readily donate or lose ions.Ex: Sodium (Na)<br>Atoms which are capable of losing or donating electrons. They act as good reducing agents and examples are metal atoms. | |
| 2520. |
Draw isotherms of CO2 at various temperature given by Thomas Anderson. Explain briefly |
| Answer» | |
| 2521. |
What are reagents? |
| Answer» | |
| 2522. |
Explain daltan s atomic theory |
| Answer» 1. All matter is comprised of tiny, definite particles called atoms.2. Atoms are indivisible and indestructible.3. All atoms of a particular element share identical properties, including weight.4. Atoms of different elements contain different mass. And5. Atoms of different elements combine in fixed whole-number ratios when forming compounds.<br>M nhi btaunga | |
| 2523. |
2Co= |
| Answer» | |
| 2524. |
SALT HYDROLYSIS CH3COO-NA+ IT RISE CH3COOH+NA+ +OH- |
| Answer» | |
| 2525. |
Which of the following species has/have electrons releasing effect?(a) -CHO(b) -NO2(c) -CH3(d) -C6H6 |
| Answer» (B) -NO2 | |
| 2526. |
Which is the first element formed in universe ? |
| Answer» Hydrogen<br>helium and hydrogen<br>Hydrogen and helium<br>Hydrogen probably<br>Hydrogen | |
| 2527. |
In Thomson s model of atom |
| Answer» Plum pudding method | |
| 2528. |
Orbital angular momentum depend on |
| Answer» The principal quantum no. of the orbit "n", velocity of electron, Radius of orbit and the factor "h/2π". Therefore, L = mvR = nh/2π. | |
| 2529. |
Why the colour of milk is white |
| Answer» Milk contain protein and fat vitamins etc one of the Main type of protein is caisin which join and form Micelles which reflects all the light that,s why the color of milk ? is white<br>Protein hote ha islyea | |
| 2530. |
Preparation of toilet soap |
| Answer» | |
| 2531. |
What is the percentage of nitrogen in urea? |
| Answer» 46.6%<br>46.6%<br>46.6%<br>46.6%<br>46.6% | |
| 2532. |
What is the value of one mole |
| Answer» 6.022× 10^23 amu<br>6.022*10^23 amu<br>6.022×10²³ amu | |
| 2533. |
What is the Structure of 3 methyl pentane |
| Answer» Ch3-Ch3-Ch3-Ch3-Ch3 ! Ch3<br>...................CH3......................|CH3–CH2–CH–CH2–CH3(Structure for 3methyl pentane)<br>CH3 | CH3–CH2–CH–CH2–CH3..............................................(Structure for 3 methyl pentane)<br>Ch3 ch2 ch2 ch2 ch3 Ch3 | |
| 2534. |
CH3 -CH= CH2-CH3 |
| Answer» This question is wrong Here not CH2 but come CH Because when we use CH2 this carbon have 5 bonds | |
| 2535. |
Explain Dobriner\'s law of trait and its limitations |
| Answer» | |
| 2536. |
Give some examples for hard water |
| Answer» Ice<br>Ice<br>ICE | |
| 2537. |
When 28g N\'2 reacts with 6g H\'2 it produces Ammonia. Find the number of Ammonia in the reaction |
| Answer» 12.044 × 10^23 molecules of NH3<br>12.044 × 10^23 molecules of NH3 | |
| 2538. |
Suggest me best topic for chemistry project 11th class |
| Answer» Chemical bonding and atomic structure<br>Periodic table/ chemical bonding | |
| 2539. |
What Will happened if fe2so4 reacts with h2o2. Show by balancing equation |
| Answer» FeSO4+ h2O2---- FeO2+ h2SO4 | |
| 2540. |
What is the limitation of the principle of atom conservation (poac) in numerical specially..? |
| Answer» | |
| 2541. |
0.2g of a substance containing bromine. Gave 0.86 g if AgBr.find %of bromine in the compound |
| Answer» | |
| 2542. |
In PCl5 axial bonds are longer than equatorial bonds beacuse |
| Answer» The axial bonds are longer than equatorial bonds because of greater repulsion from equatorial bonds. So axial bonds are nearer to equatorial bonds and this causes greater repulsion resulting in elongation of bond length. | |
| 2543. |
how we prepare H2O2 by barium peroxide |
| Answer» Industrial Method of PreparationHydrogen peroxide is prepared by the electrolysis of 30% ice-cold H2SO4. When acidified sulfate solution is electrolyzed at high current density, peroxodisulphate is obtained. Peroxodisulphate is then hydrolyzed to get hydrogen peroxide.Boiling Point: 150.2 °CMolecular Weight/ Molar Mass: 4.0147 g/molDensity: 1.05 g/cm3Melting Point: -0.43 °C | |
| 2544. |
Give condensed and bond line structure of 2- hydroxy -1,2,3- propanetricarboxylic acid |
| Answer» Notes chapter 5 | |
| 2545. |
I want easy simple notes plz suggest some content or website where i can find it |
| Answer» Studiestoday.com AND Topprs<br>U can prefer learn cbse website<br>Physics wallah | |
| 2546. |
If CO is carbon monooxide CO2 is carbon dioxide Then why CO3 is carbonate not carbontrioxide? |
| Answer» The salt of carbonic acids are called carbonates and are characterized by the carbonate ion, CO32-. The carbonate ion is the simplest oxocarbon anion, consisting of one carbon atom surrounded by three oxygen atoms in a trigonal planar arrangement. | |
| 2547. |
How to calculate oxidation numbers |
| Answer» Question- (C)O2 - We have to find the oxidation no. Of (C) ???????? Answer- let the oxidation no. Of (C) be(x).Now,X + 2(-2) =0X-4=0(X=+4)Ans.So, the oxidation no. Of (C) is (+4).<br>First u hace to leran or read the rules given in book<br>Please send answer later | |
| 2548. |
write the formulas for calculating the radii and energy of stationary states? |
| Answer» The Bohr\'s energy of a stationary state of the hydrogen atom is given as En\u200b=n2h2−2πme4\u200b.<br>-2π^4me^4/n^2h^2 | |
| 2549. |
Calculate the mass per cent of different elements present in sodium sulphate |
| Answer» Calculations:Mass% of an element in a compound is calculated using the relation,=\xa0{tex}\\frac{\\text { Mass of that element in the compound }}{\\text { Molar mass of the compound }} \\times{/tex}100\xa0Now the molar mass ofNa2SO4 = 2(23.0) + 32.0 + 4\xa0{tex}\\times{/tex} 16.0= 142 g mol-1So, Mass per cent of sodium=\xa0{tex}\\frac{46}{142} \\times{/tex}100= 32.39%Similarly,Mass per cent of sulphur=\xa0{tex}\\frac{32}{142} \\times{/tex}100= 22.54%Mass per cent of oxygen=\xa0{tex}\\frac{64}{142} \\times{/tex}100= 45.07% | |
| 2550. |
Vasper siddhabt |
| Answer» | |