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.
| 2601. |
How 2×10 to the power-3×2×6×10²³ after solving become 2.4×10²¹? |
| Answer» | |
| 2602. |
What is the chemical reaction of the the displacement reaction |
| Answer» The chemical reaction from the situation of the displacement reaction from glucose defence as kinetic energy of the chemical reaction and the the reaction of glucose breakdown in pyruvate from the situation of the the for 3mg of the the range range of the chemical reactions | |
| 2603. |
Significance of Heisenberg uncertainty principle ( in easy way ) |
| Answer» 1) It rules down the limitations of the concept of definite paths or trajectories around the nucleus put forward by Neils Bohr. 2) It is applicable only to microscopic objects and is negligible in the case of macroscopic ones. 3) It can be applied only in case of objects of size milli to micro grams. Useless in case of gram and kilograms weight. | |
| 2604. |
What is mesonic particles |
| Answer» Meson, any member of a family of subatomic particles composed of a quark and an antiquark. Mesons are sensitive to the strong force, the fundamental interaction that binds the components of the nucleus by governing the behaviour of their constituent quarks. | |
| 2605. |
Define Development of chemistry ? |
| Answer» | |
| 2606. |
Write order of ionisation energy of group 13 elements with the help of graph |
| Answer» | |
| 2607. |
How the photoejeted electrons depend on incident frequency |
| Answer» As the frequency of light falling on the electrons increases, the intensity of light also increases and thereby, the number of ejected photoelectrons increases. | |
| 2608. |
Significant figure what is |
| Answer» Significant figures of a number in positional notation are digits in the number that are reliable and absolutely necessary to indicate the quantity of something. | |
| 2609. |
If 1.47 gm of hydrogen and 29 gm of oxygen find limiting reagent |
| Answer» Hydrogen is the limiting reagent.<br>In H2O or H2O2 ? | |
| 2610. |
Charge of electron given by whom and in which year |
| Answer» Charge of electron was given by RA Millikan by oil drop experiment in (1906-14) | |
| 2611. |
Concentration of solution |
| Answer» Determined in terms of several factors including MOLARITY, MOLALITY, MASS% and VOLUME%, NORMALITY, PARTS PER MILLION, etc. Generally, we can define the CONCENTRATION of a solution as the amount of solute in a particular amountof the solution. | |
| 2612. |
Which two things in this universe don\'t participate in chemistry? |
| Answer» Metabolism is the chemical reaction in the body\'s cells and it is performed for sometime after death of the cell.I didn\'t get any appropriate answer here.<br>OK, then dead cells?<br>That is where there is a confusion. Because nuclear reactions can be partially physical and chemical.<br>So, they also involve chemistry.<br>Nuclear reactions involve\xa0change in atom\'s nucleus and produces different element. (@AdityaDevA) | |
| 2613. |
Calculate the mole - 10 gm of H2C2O4 |
| Answer» 1/9<br>No. Of moles= mass given/ molar mass Moles= 10/90=0.1111 moles<br>Number of moles = Mass given / Molar massMolar mass = 2×1 + 2×12 + 16×4 = 90= moles = 10/90 = 1/9 = 0.11 | |
| 2614. |
Name any two things in this universe that don\'t participate in chemistry. |
| Answer» Time is a fundamental (physical) quantity which we study in chemistry. Space also contains chemistry because it contains complex chemical compounds and some gaseous molecules (like H2O) and hydrogen and dust particles.<br>That is what I believe.<br>Time and space.<br>If you don\'t have a single idea about the answer, don\'t try to answer because no one is forcing you and BTW body also contains chemistry because it have some mass and occupy space. Also, some chemical reactions are taking place inside the body.<br>you amd me | |
| 2615. |
An electrolyte dissolve in water when |
| Answer» When lattice energy of ion is less than hydration energy. | |
| 2616. |
What is the development of chemistry |
| Answer» The development of the modern scientific method was slow and arduous, but an early scientific method for chemistry began emerging among early Muslim chemists, beginning with the 9th-century chemist Jābir ibn Hayyān (known as "Geber" in Europe), who is sometimes regarded as "the father of chemistry". | |
| 2617. |
Azwsdfhgyt56i890po:44_________-77⁷⁷7777ijnx? |
| Answer» Azjakdjxj_____-323302ydjdd sh. ??<br>?<br>Hhhhhh<br>What is this? | |
| 2618. |
Predict the shape of ph3 molecule molecule according to vsepr theory |
| Answer» According to VSEPR theory the molecule ph3 has trigonal pyramidal shape due to lone pair and bond pair repulsion. | |
| 2619. |
A family consume 0.525 sugar per day , then how much sugar will be the family required in a month |
| Answer» | |
| 2620. |
Calculate the formal charge of each oxygen atom of oxygen molecule |
| Answer» Formal charge\xa0of the\xa0oxygen atom\xa01= Valence electron - 12bonding electrons - nonbonding electrons. - The\xa0formal charge\xa0on\xa0oxygen atom\xa01 is zero. - The\xa0formal charge\xa0on\xa0oxygen atom\xa02 is \'1\'. - The\xa0formal charge\xa0on\xa0oxygen atom\xa03 is \'-1\'. | |
| 2621. |
What is mean by orbital |
| Answer» It is the "clouded" area around a nucleus where there is most probability of finding an electron. It is based on Heisenberg\'s Uncertainty principle.<br>Electron arrange themselves in cloudlike region around the nucleus called orbital<br>Orbital means pagal hai kya | |
| 2622. |
significance of ψ and ψ2 in chemistry |
| Answer» ψ is a wave function and refers to the amplitude of electron wave i.e. probability amplitude. It has got no physical significance. The wave function ψ may be positive, negative or imaginary.[ψ]2\xa0is known as probability density and determines the probability of finding an electron at a point within the atom. This means that if:(i) is zero, the probability of finding an electron at that point is negligible.(ii)\xa0[ψ]2\xa0is high, the probability of finding an electron is high i.e. electron is present at that place for a long time.(iii)\xa0[ψ]2\xa0is low. the probability of finding an electron is low i.e. electron is present at that place for a shorter time. | |
| 2623. |
Write correct orbital notation for each(I)n=1,l=0,m=0 |
| Answer» 1s | |
| 2624. |
PPT on periodic classification of element |
| Answer» | |
| 2625. |
Can anyone tell me if the reduced syllabus is also coming in neet |
| Answer» Yes, the reduced syllabus will also come in the neet exam as it is an entrance exam. | |
| 2626. |
What is magnetic quantam number ? |
| Answer» The magnetic quantum number of an electron is one of the four quantum numbers that state the position of the electron with respect to the nucleus. The other three are-Principal quantum numberAzimuthal quantum numberSpin quantum number | |
| 2627. |
Find molarity of solution that has 9.8g of. H2so4 Present in 100 ml solution |
| Answer» Molar mass of H2SO4 = 98 g. Therefore, M = 9.8/(98 * 100) * 1000 = 1 M.// | |
| 2628. |
200 ml of 0.05 M magnesium chloride is mixed with 75ml of 0.1M silver |
| Answer» | |
| 2629. |
The energies of electrons are said to be quantized. Explain. |
| Answer» Classical mechanics fails when applied to microscopic objects like electrons, atoms and molecules, etc. This is because the classical mechanics ignores the concept of dual nature of matter. The branch of science that takes into account this dual behaviour of matter is called quantum mechanics.The absorption and emission spectra of hydrogen like atom explained by Bohr theory is the experimental evidence in support of the idea that electronic energies in an atom are quantized. The various line obtained in the spectrum of hydrogen (Lyman,. Balmar, Paschan , Brackett and Pfund series) are based on the assumption of electronic energies in an atom are quantized. | |
| 2630. |
Calculate number of photon present in light of E=3ev, Wavelength=2000Angstorm |
| Answer» | |
| 2631. |
How many significant figures in 5×5.364 |
| Answer» 4<br>4. | |
| 2632. |
Calculate the percentage composition of the following components 1. CuSO4. 4H2O |
| Answer» CuSo4---- calculate over all mas4H2O------ calculate over all masDivide 1 element mass present in compound by over all mass of compound and then multiply by 100 to get percentage | |
| 2633. |
Explain periodic table and draw diagram also |
| Answer» | |
| 2634. |
Calculate the wavenumber and frequency of yellow radiation having wavelength 5800A° |
| Answer» Wave number= 1.72×10^6m^-1Frequency= 1.5172×10^14s^-1 | |
| 2635. |
Calculate molecular mass of glucose c6h12o6 molecule |
| Answer» C=12×6=72uH=12u,. O=16×6=96uTotal molecular mass=72+12+96=180u<br>180u<br>180.56 | |
| 2636. |
Want example of law of conservation of mass |
| Answer» Mass can neither be created nor be destroyed | |
| 2637. |
Calculate the mass and charge of one mole of electron |
| Answer» Charge of electron= 1.6×10^-19×6.022×10^23= 9.6352×10^4Mass of electron= 9.1×10^-31×6.022×10^23= 5.48008×10^-7 | |
| 2638. |
What did Rutherford conclude from the observations of a-ray scattering experiment? |
| Answer» A correction, 1) most alpha rays pass straight through atom. 3) 1/12000 alpha rays. Sorry.<br>1) Most of the α - rays emerged out of the gold foil with large amount of scattering indicating that most of the space inside a gold atom is empty.2) A few α - rays suffered a small amount of deviation indicating that something which is positive in charge is situated at inside every gold atom.3) 1 out of every 2000 rays came out of the gold foil undeviated retracing the path indicating that all positive charges present in an atom is accumulated at a very small volume inside the atom. | |
| 2639. |
The multiple 5*0.2 after rounding off will be |
| Answer» 1 | |
| 2640. |
The multiple after rounding off will be |
| Answer» | |
| 2641. |
How does molarity and molality depends on temperature |
| Answer» When temperature increases, the molarity decreases. | |
| 2642. |
If 0.85g of NH3 is dissolved in 100ml of solution find molarity if density of solution is 1.2g/ml |
| Answer» Molar mass (M2) = 14 + 3 = 17 g// Therefore, M = (W2/ M2 * V) * 1000 = (0.85/ 17 * 100) * 1000 = 0.5 mol/L// | |
| 2643. |
Calculate the energy of mole of photon of radiation where f is 5×10^14 Hz |
| Answer» | |
| 2644. |
What is the order of -I effect |
| Answer» Often in experimental studies, researchers will have participants provide responses to several different treatments. In these types of studies, order effects refer to differences in participant responses as a result of the order in which treatments are presented to them. | |
| 2645. |
Chemistry 2 part book |
| Answer» Kon sa book??? | |
| 2646. |
How 1amu=1.66*10^-24 |
| Answer» | |
| 2647. |
(-).^ / \\ / \\ /----------\\ /--------------\\Aromatic or not |
| Answer» | |
| 2648. |
Why do alkali metals give blue colour when dissolved in liquid ammonia? |
| Answer» Because alkali metals are generally basic in nature. | |
| 2649. |
At NTP , what will be the volume of molecules of 6.022× 10*23 |
| Answer» Nahin hai koi explanation ?<br>First convert it into moles . In order to convert it into moles divide it by Avogadro number then you will get 1 mole. As you know that 1mol= 22.4 litres .<br>Aditya Dev A I plz tell me in detail with solution<br>22.4 litres = 22400 ml.<br>Explain in details plz | |
| 2650. |
What is particle nature of electromagnetic readiation |
| Answer» Particle Nature-->when radiation interacts with matter | |