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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.
| 3051. |
What is absobe spectrum |
| Answer» An absorption spectrum is constituted by the frequencies of light transmitted with dark bands when energy is absorbed by the electrons in the ground state to reach higher energy states. | |
| 3052. |
Hyberidization and shape geometry of H2SO4 |
| Answer» | |
| 3053. |
How can i understand chemistry if i m a new student, i m not getting anything |
| Answer» Learn thorugly...understand only concepts...learn all methods of reactions..???? | |
| 3054. |
Write de broglie equation |
| Answer» λ = h/mv<br>It is calculation of wavelengths of any moving object. Wavelengths = h/mv . | |
| 3055. |
What is chemistry ? Briefly explain the importance of chemistry in our daily life. |
| Answer» The branch of science that studies the preparation,properties, structure, reaction of any material is called chemistry<br>Chemistry defined as the branch of science which deals with the study of composition structure and properties of matter and the changes which the matter undergoes under different conditions and the law which govern these change | |
| 3056. |
What is the difference between covelent bond and coordinate bond |
| Answer» A covalent bond is a form of chemical bond that form when two atom share an electron pair.it is also known as "molecular bond" . Example H._. H Coordinate bond forms when one atoms donates its electron to another atom or both electrons are come from same atom. It also called dative bond. Example NH4<br>A covalent bond is formed by sharing of electrons ex. in a molecule of nitrogen two atoms are bonded covalently ( at. no. of N2\xa0is 7 so it contains 3 electrons in 2p shell it needs 3 electrons to complete its octet so in a molecule of nitrogen both atoms contribute 3 electrons which are then shared by both and thus they attain nearest nobel gas configuration).In a Coordinate bond both atoms contribute equal no. of electrons but they are not shared ex. HCl In hydrochloric acid both hydrogen and chlorine contribute one electron to the bond but chlorine being more electronegative than hydrogen exerts attracts the electron pair towards itself. | |
| 3057. |
What is the difference between the Mass of molecule and molecular mass |
| Answer» Literally , there is no difference | |
| 3058. |
What is instantaneous velocity? |
| Answer» Mai vdiyaaaa... aap btao? | |
| 3059. |
Calculate the weight of 10 moles of ethanol |
| Answer» Fasly<br>Can you please say step by step<br>490 gm | |
| 3060. |
Reaction of sodium chloride with hcl |
| Answer» Sodium chloride reacts with hcl to form sodium hydride and chlorine gasNacl + hcl => NaH + cl2. | |
| 3061. |
What is meant by molality of a solution?answer fast plz |
| Answer» Molality is also known as molal concentration. It is a measure of solute concentration in a solution. The solution is composed of two components; solute and solvent. There are many different ways to express the concentration of solutions like molarity, molality,\xa0normality, formality, volume percentage, weight percentage and part per million. The term needs to calculate the mass of the solvent and moles of\xa0solute.Molality FormulaMolality(M)=Number\xa0of\xa0moles\xa0of\xa0solute/ Mass\xa0of\xa0solvent\xa0in\xa0kgsMolality(M)=g×1000/ W×m | |
| 3062. |
Applications of chemistry??.. |
| Answer» Good morning bro..<br>Gud Mrnggg broo!! .... How r uhh?? ?<br>Gm<br>Good morning ?<br>Gud Mrng!! ✌ | |
| 3063. |
Formula of heavy water |
| Answer» D2o<br>Heavy water is a compound that is made up of oxygen and\xa0deuterium, a heavier isotope of hydrogen which is denoted by ‘2H’ or ‘D’.\xa0Heavy Water is also called deuterium oxide\xa0and is denoted by the chemical formula D2O.<br>Heavy water was a byproduct of hydrogen gas that was produced at the vemark. The chemical formula of heavy water is D2o. Heavy water looks like water, but is about 10% heavier then plain water.<br>D20 | |
| 3064. |
What is organic chemistry?? |
| Answer» Organic chemistry is a branch of chemistry that studies the structure, properties and reactions of organic compounds, which contain carbon in covalent bonding. Study of structure determines their chemical composition and formula. | |
| 3065. |
What is capacitance |
| Answer» Kon s chapter m h<br>Capacitance is the ratio of the change in the electric charge of a system, to the corresponding change in its electric potential.<br>Capacitance is the ratio of the change in electric charge of a system to the corresponding change in its electric potential. There are two closely related notions of capacitance: self capacitance and mutual capacitance. Any object that can be electrically charged exhibits self capacitance. | |
| 3066. |
Side book for chemistry.... |
| Answer» Padhai pahle ke comperision me achi chal rahi hai ....bahot disappointing hai bhai 90% only .....tumhara kitna hai???? Aur bakio ka bhi agar pata ho to batana.......mera PCM HAI INSPITE OF SECURING ONLY 78 MARKS IN SCIENCE?<br>Mai thik hu bro aap kaise ho??... Pdhai bhi shi chl rhi h..... Kitna ℅ aaya aapka?? Aur aapki studies kaise chl rhi h... PCMB liya h ya PCM..<br>?<br>Modern publisher | |
| 3067. |
Convert 2 days into second |
| Answer» 48 × 60 × 60172,800<br>1 min = 60 second1 hour = 3600 second1 day = 24 hour2 day = 48 housSO 2 day = 48 × 3600 second =\xa0172,800 second<br>172800 seconds | |
| 3068. |
NaoH find mole function |
| Answer» Since the molar mass of NaOH is 40 g/mol, we can divide the 90 g of NaOH by the molar mass (40 g/mol) to find the moles of NaOH. This the same as multiplying by the reciprocal of 40 g/mol. If the equation is arranged correctly, the mass units (g) cancel out and leave moles as the unit. | |
| 3069. |
Calculate the magnetic moment of N2 on the basis of M. O. T |
| Answer» | |
| 3070. |
I am very confuse how to study chemistry systematically |
| Answer» First of all read ncert book properly after that try to read side book or comprehnisive book and solve numerical probelms then try to solve mcq<br>I think, first off all you have to read the book and after reading solve some multiple choice questions of the chapter u will be interested when you will give the answers...<br>According to me chemistry needs regularity..... and proper revision you have to revise at least your previous 5 classes on regular basis. | |
| 3071. |
What is line spectra of hydrogen |
| Answer» When hydrogen gas present on discharge tube passed through high voltage & low pressure, the radiations emitted passed through spectroscope and spectrum is obtained on photographic plate. Hydrogen spectrum contains several lines known as series. The series present in hydrogen spectrum are:-\tSeriesn1n2Spectral regionLyman12,3,4,..UltravioletBalmer23,4,5….VisiblePaschen34,5,6,7..InfraredBrackett45,6,7…InfraredPfund56,7,8…Infrared\t\xa0 | |
| 3072. |
When 1.5 mole of carbon is burnt into air how much carbon dioxide will be produced |
| Answer» C + O2= CO21 mole of carbon reacts with 1mole of dioxygen to produce 1 mole of CO2 . Similarly ,1.5 moles of carbon will react with 1.5 mole of dioxygen to produce 1.5 moles of CO2<br>44.5 g<br>44.5g = 1 mole of carbon dioxide produced. Is that correct? | |
| 3073. |
What is atomic mass and mention its unit |
| Answer» Atomic mass is a mass number of an atom... And it\'s unit is 1/12 th part of the carbon isotope | |
| 3074. |
Law of difinte proportion?? |
| Answer» Good night you both mai 5 m. Tak wait kiya koi nahi aaya to chala gaya but kal subah ??<br>Bbyeee... Good night... Mereko bhi neend lag rii ??<br>Ha vo bhi h.. Aur log out ka feature bhi aa gya h..<br>Hn... Ab chatting nii hoti yha???<br>Okk byee aadu good nyt ... Hope to see you next week on friday again... | |
| 3075. |
Another name of corona virus...?? |
| Answer» What happen??<br>Ohh ?<br>Maine bio, physics, chemistry, computer science, english aur physical education additional h..<br>Okay!! ?<br>Nhi use krta hu.. Aur ab to 12 baad he krr paunga... | |
| 3076. |
Uses of CHEMISTRY in our life (knock knock royal and aadu )?? |
| Answer» Wow ? sbke kafi acche the diku aur assem ko mere taraf se congrats ?? kehna...<br>Hello Seraj ✌?<br>Mera bhi science ne hi kha liya... Lol?? sbhi log vdiyaa hai ?... Diku k 94.4 the... Shreya k 90.2 .... Ankesh bro k 84 or 85 something the.. ?... Assem bro k 97 ... aur pk bro ka nii pucha hai abhi?......<br>Nhi seraj that\'s good... Do better next tym...... Bs aise he nhi aa rha tha... Phir socha sbka thoda hal chal le lu isiliye aa hu...<br>Bhai tab bhi kum to hai 77. Maine 80 socha tha. But ye bhi acche hai. Aur aap itte mahino tak kaha the | |
| 3077. |
Notes for ch 2 |
| Answer» Hii varun kaha se ho<br>Hlo<br>Hiii<br>Hi | |
| 3078. |
Which book I s/d purchase for chemistry |
| Answer» Modern chemistry | |
| 3079. |
define limiting reagent ?? |
| Answer» Limiting reagents are the substances that are\xa0completely consumed in the completion of a chemical reaction.\xa0They are also referred to as limiting agents or limiting reactants. According to the\xa0stoichiometry\xa0of chemical reactions, a fixed amount of reactants is required for the completion of the reaction. Let us consider the following reaction of formation of ammonia:3H2\xa0+ N2\xa0→ 2NH3 | |
| 3080. |
I want thermodynamics ful ch notes Can anybody give me |
| Answer» | |
| 3081. |
Side book for chemistry... |
| Answer» Acch h 77℅ ? ... Keep it up...<br>Bhai mera science ne kha liye aur mera 77%??????<br>Hii aadu and royal bro<br>Congrats ?? aadu well done ? .. Mera to bahut kharab aaya h 88.33℅ .. 2 ℅to school se he kat gya aur bake sb maths ne kha liye.... Diku kaise h... Aur diku, aseem, pk, shreya aur ankesh sbka kitna ℅ aaya... Aapki studies kaise chal rhi h..<br>Mai pass ho gyi... Thik thak aa gye the?.. Apke kitne aaye?? Mere 90℅ the... | |
| 3082. |
What are quantum numbers ??? |
| Answer» An\xa0atom\xa0consists of a large number of orbitals which are distinguished from each other on the basis of their\xa0shape,\xa0size\xa0and orientation in space. The\xa0orbital\xa0characteristics are used to define the state of an electron completely and are expressed in terms of three numbers as stated, Principal quantum number, Azimuthal quantum number and Magnetic quantum number and Spin Quantum number.<br>In chemistry and quantum physics, quantum numbers describe values of conserved quantities in the dynamics of a quantum system. In the case of electrons, the quantum numbers can be defined as "the sets of numerical values which give acceptable solutions to the Schrödinger wave equation for the hydrogen atom". | |
| 3083. |
Draw the line spectrum of hydrogen atom and mention name of different series |
| Answer» Similarly in paschen series to 3rd orbit In brackett series to 4th orbitIn pfund series to 5th orbit In humphary series to 6th orbit<br>Similarly, in balmer series electron jumps from high energy levels to 2nd levels<br>Lyman series - an electron emits energy when jumps from high energy levels to 1st orbit is known as Lyman series.<br>Lyman series, balmer series, paschen series, brackett series, pfund series, humphary series | |
| 3084. |
NH4 overlapping in chemical bonding |
| Answer» | |
| 3085. |
What is anti bonding molecular orbital |
| Answer» An\xa0antibonding orbital\xa0is a type of\xa0molecular orbital (MO) that weakens the\xa0chemical bond\xa0between two atoms and helps to raise the energy of the molecule relative to the separated atoms.<br>The electron density is concentrated behind the nuclei of the two bonding atoms in anti-bonding molecular orbitals. This results in the nuclei of the two atoms being pulled away from each other. These kinds of orbitals weaken the bond between two atoms. | |
| 3086. |
Stp |
| Answer» | |
| 3087. |
What is quantum numbers...... |
| Answer» Hiii....mere jada sochne wali bhai kase h aap........I am your pagal bhen........?✌️✌️<br>The set of numbers used to describe the position and energy of the electron in an atom are called quantum numbers. There are four quantum numbers, namely, principal, azimuthal, magnetic and spin quantum numbers.The notion of energy levels and notation has been taken from the atom ‘s earlier Bohr model. Schrodinger ‘s equation evolved the concept from a two-dimensional flat Bohr atom to a three-dimensional model for wave motion. Where n = 1 , 2 , 3 is called the main quantity, and h is the constant of Planck. | |
| 3088. |
How to find bond order |
| Answer» The bond order shows the number of chemical bonds present between a pair of atoms. For instance, the bond order of diatomic nitrogen N≡N is 3 and bond order between the carbon atoms in H-H≡C-H is also three. The bond order describes the stability of the bond.\xa0The molecular orbital provides an easy understanding of the concept of the bond order of a chemical bond. It quantifies the degree of covalent bonds between the atoms.\xa0How to calculate Bond order?The Bond Order Formula can be defined as half of the difference between the number of electrons in bonding orbitals and antibonding orbitals. Bond order = 1/2 = Nb - NaWhere,Nb is the number of bonding electronsNa is the number of antibonding electrons | |
| 3089. |
What is stoichiometry? PLEASE EXPLAIN ON SIMPLE WORDS |
| Answer» Stoichiometry as the calculation of products and reactants in a chemical reaction. It is basically concerned with numbers.\xa0Stoichiometry helps us determine how much substance is needed or is present. Things that can be measured are;\tReactants’ and Products mass\tMolecular weight\tChemical equations\tFormulas<br>In stoichiometry with the help of balanced chemical equations. We can measure no. of moles, molecules, particles, volume. | |
| 3090. |
What is s p d f? |
| Answer» These are the orbitals or subshell<br>Pdf<br>S , p, d, f are the subshells of the shells( K, L, M, N) in which K shell contains s subshell , L contains s, p subshells , M contains s, p, d subshells while N. Shell contains s, p, d, f subshell | |
| 3091. |
Can anyone suggest a good platform to prepare online for class 11(jee)? |
| Answer» I know youtube classes is most better.And self study is also.<br>DOUBTNUT is verry good platforms<br>Doubtnut<br>Vedantu and unacademy<br>Bro abhi to sabse acha maina dekha vedantu par | |
| 3092. |
How many part of chemistry and explain it |
| Answer» Explain plz<br>2 parts | |
| 3093. |
Find the number of electrons in 36g of phosphorus? |
| Answer» | |
| 3094. |
Why here 0.2is used? |
| Answer» | |
| 3095. |
Draw and arrange in terms of increasing bond angle : NH3H2OCH4 |
| Answer» H2O < NH3 < CH4\xa0NH3\xa0is better known as\xa0ammonia\xa0to us, H2O as water and CH4 as methane.The bond angle according to the\xa0theory of VSEPR\xa0is the angle between the two electron bonds.The number of lone pairs of electron in H2O is 2, where as it is one in NH3 and none in CH4. | |
| 3096. |
Value of rydberg constant |
| Answer» R∞\xa0and\xa0electron spin\xa0g-factor are the most accurately measured physical constants.\tRydberg Constant Value,R∞10973731.568508(65) m-1Rydberg Constant Value,R∞1.097 x 107m-1\t | |
| 3097. |
Cu+ HNO3- Cu2+NO |
| Answer» | |
| 3098. |
WHY CHEMISTRY IS IMPORTANT TO STUDY(GM ALL OF YOU???) |
| Answer» Chemistry is the study of matter and its interactions with other matter and energy. Here\'s a look at the importance of chemistry and why you should study it.Chemistry has a reputation for being a complicated and boring science, but for the most part, that reputation is undeserved. Fireworks and explosions are based on chemistry, so it\'s definitely not a \u200bboring science.If you take classes in chemistry, you\'ll apply math and logic, which can make studying chemistry a challenge if you are weak in those areas. However, anyone can understand the basics of how things work... and that\'s the study of chemistry. In a nutshell, the importance of chemistry is that it explains the world around you.<br>Chemistry plays an important role in science and is often intertwined with other branches of science.Chemistry contributes to a large extent in the development and growth of a nation.<br>Chemistry is the branch of science which studies the composition of a matter,so we need to know how these substances are stable | |
| 3099. |
Numbers of atom in NaHco3 |
| Answer» Its chemical formula is NaHCO<tt>3</tt>. Its formula consists of one sodium (Na) atom, one hydrogen (H) atom, one carbon (C) atom and three oxygen (O) atoms. | |
| 3100. |
Draw the resonating structure of carbonate ion. |
| Answer» The\xa0Carbonate\xa0(CO2−3 C O 3 2 − )\xa0IonUnlike O3, though, the actual\xa0structure\xa0of CO32−\xa0is an average of three\xa0resonance structures. 2. Carbon has 4 valence electrons, each oxygen has 6 valence electrons, and there are 2 more for the −2 charge. This gives 4 + (3 × 6) + 2 = 24 valence electrons. | |