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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 451. |
Calculate the volume of stt 1.5 mole of oxygen |
| Answer» Volume of oxygen at STP will be = 1.5*22.4 litre..ok | |
| 452. |
1 . What is the use of Scientific Notation in chemistry |
| Answer» Scientific notation is a way to express very big and very small numbers with exponents as a power of ten. It is also sometimes called exponential notation. | |
| 453. |
Radient energy absorbed in packets discontinoiusly is called quantum??? |
| Answer» Yes | |
| 454. |
Good morning gyessssss |
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Answer» Gd morning Gudmrning |
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| 455. |
Planks constant value |
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Answer» 6.626*10^-34JS 6.626x10–³⁴kgm²/s 6.626*10^-34 |
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| 456. |
Calculate the no. Of molecules and atoms in 684gm of C12H22O11 |
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Answer» 5 2 molecules .5 molecule |
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| 457. |
How do rates of evaporation and condensation change initially |
| Answer» | |
| 458. |
Class 9 water is liquid at room temperature |
| Answer» Ya bro water is liquid at room temperature | |
| 459. |
What is the full form of CPG |
| Answer» Capillaries blood gases | |
| 460. |
Why do you not fill the cylinder of CPG |
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Answer» It is unsafe and expensive Because petroleum can\'t be use in domestic kitchen use |
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| 461. |
Another name of benzene |
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Answer» Ya it\'s hexene What is atom Haxene |
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| 462. |
What is electronic configration of copper |
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Answer» Raj this answer is wrong that u have give because it is not following octave rule it has 17 electron in its last orbit which is not possible 1s^2 2s^2 2p^6 3s^2 3p^6 4s^1 3d^10 2,8,17 |
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| 463. |
एवोगेड्रो की संख्या की व्याख्या करें |
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Answer» 6.023multiply by10²³ mol-¹ 6.023× 10^23 6×10 is to power 23 |
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| 464. |
Calculated the molar mass of CH4 |
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Answer» Mass number of Carbon (C) = 12.044uMass number of Hydrogen (H) = 1.008uThus,mass number of CH4 = (12.044 + 4 ×1.008) = 16.076uMolar mass of CH4 is the mass number of CH4 expressed in grams i.e.16.076 grams or 16 g. 16g/mole Calculate the molar mass of CH4 |
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| 465. |
Is 1.9927 same as 2?? |
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Answer» Yup Yeah Yes...but after rounding off |
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| 466. |
What are the examples of 9 types of solution |
| Answer» | |
| 467. |
Why the does not make a wave when it hit with hockey |
| Answer» Couz mass is inversely proportional to wavelength of an object abd as its mass increases it\'s wave motion becomes negligible | |
| 468. |
Calculate the mass per cent of different elements present in sodium sulphate. |
| Answer» | |
| 469. |
Gyus how many of u r nervous about the 10th board results |
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Answer» Ha bhai bas smart study kar raha 10th ki starting se matlab ki aap apni neend par kabu paa lo yani roz subha 3.30 se 4.00 k bich me utkhar panda chiye or bas jo cheej padoge wo yaad ho jayegi Aap to 96.24 le gye bhai Very very much |
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| 470. |
Hi...hlo...everyone... |
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Answer» Hlo Hi????? ya hii... |
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| 471. |
Sorry..............................................please forgive me dhama Yaar.. ?????? |
| Answer» Sorry ....kyu | |
| 472. |
Result kaise aaega |
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Answer» Mujhe lagta h ki meri 90% se 96% k bich me ban jayegi Result aayega katai jeher phir sab milkar dha denge kahar???? कतई जहर result आएगा मेरा तो |
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| 473. |
Conversion |
| Answer» Kiska | |
| 474. |
How many gm required of i2 to form one mole HI |
| Answer» Atomic mass of \'Iodine\' = 127 a.m.u.To form 1 mole of \'HI\' we need 1 mole of \'iodine atoms\' is required.Mass of iodine required = molar mass iodine = 127 grams | |
| 475. |
Calculate the total no of neutrons in 7mg of C^14 |
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Answer» Mass of 1 atom of C-14 = 14 a.m.u.Mass of 1 mole of C-14 = 14 grams (using unitary method)14 grams = 1 moleTherefore, 7 grams = 0.5 mole 1 atom of C-14 has 8 neutrons0.5 mole of C-14 has\xa08 * NA\xa0=\xa08 * 6.022 * 1023\xa0=\xa04.8176 * 1024\xa0 neutrons |
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| 476. |
What is gram atomic mass? |
| Answer» Gram atomic mass\xa0is the\xa0mass, in\xa0grams, of one mole of\xa0atoms\xa0in a monatomic chemical element. It is numerically equal to the relative\xa0atomic mass\xa0(or\xa0atomic weight) in\xa0grams. The\xa0atomic mass\xa0of an element expressed in\xa0grams\xa0is calledgram atomic mass. For example oxygen is 16\xa0grams. | |
| 477. |
When cbse will declare the result of class 10 |
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Answer» On 5 may Between 13-17 may |
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| 478. |
How many orbitals are possible with the quantum no. n=3,L=2,m = +2 |
| Answer» | |
| 479. |
Mean free path of gas molecule at constant temperature is inversely proportional to |
| Answer» | |
| 480. |
Volume of co2 obtained at stp by the complete decomposition of 9.85 g Na2Co2 is |
| Answer» | |
| 481. |
Which of the following is the strongest oxidising agent.? |
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Answer» Chlorine Fluorine Zn |
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| 482. |
Molecular mass of sodium acetate |
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Answer» 83g/mole 82.0343 g/mol |
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| 483. |
Plz someone share few numericals of mole concept and empirical and molecular formula. |
| Answer» | |
| 484. |
Explain depression in freezing point |
| Answer» | |
| 485. |
What is the difference between minerals and ores ? |
| Answer» Minerals are naturally occurring inorganic solids with a crystalline structure and a definite range of chemical formula. Ores are concentrations of minerals in rock that are high enough to be economically extracted for use. | |
| 486. |
describe mole concept |
| Answer» | |
| 487. |
Calculate total number of protons in 78gm of methane |
| Answer» | |
| 488. |
Difference between molarity and molality. |
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Answer» moles per litre is called molarity moles per kg called molality Molarity is the no. Of moles of solute per litre of soln. Molality is no. Of moles of solute per kg of solvent |
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| 489. |
Order of magnitude |
| Answer» | |
| 490. |
Please tell me which is the best iit coaching institute in hisar , haryana with affordable fees |
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Answer» Don\'t know.. Bt I think there is nothing special in Haryana for IIT coaching... U should take some good State for that... Someone has answered but where is the answer |
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| 491. |
The species which has its fifth ionisation potential equal to 340 V is |
| Answer» | |
| 492. |
What is the atomic number of calicium |
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Answer» 20 20 |
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| 493. |
Which is more electron withdrawing - hydrogen ion or phenyl ring |
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Answer» phenyl ring So formic acid should be weaker acid than benzoic acid Phenyl ring |
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| 494. |
How many type of chemistry are there |
| Answer» 4 | |
| 495. |
Explain saytzeft\'s rule with example |
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Answer» acco to satzeff rule more alkylted alkane can be formed as product According to Saytzeff rule "In dehydrohalogenation reactions, the preferred product is that alkene which has the greater number of alkyl groups attached to the doubly bonded carbon atoms."For example: The dehydrohalogenation of 2-bromobutane yields two products 1-butene and 2-butene. Out of these 2-butene is the major product (80%) as it is more highly substituted and it is more stable. |
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| 496. |
20 points on importance of chemistry in our daily life |
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Answer» N2o is known as laughing gas Which element is known as laughing gas Artificial rain is due which element |
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| 497. |
1u=1.67•10 |
| Answer» | |
| 498. |
Find out the mole fraction of NaOH,Na2CO3,NaHCO3GIVEN WEIGHTS---- 20g ,53g ,43g |
| Answer» | |
| 499. |
Nucleophiles |
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Answer» Aap kon se class me ho?? It is a specie that donate the elcetron pair in a chemical equation |
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| 500. |
Write the formula of water gas |
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Answer» H2o is not the formula of water gas but it is formula of water...only....the right formula for water gas is CO+H2O H2o |
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