This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Total value of m for electron n equal to 4 equal to |
| Answer» ONG>Answer: | |
| 3. |
What is oxidation agent |
|
Answer» ONG>Answer: Oxidation agent is a SUBSTANCE that has the ability to OXIDIZE the other substances. Explanation: Hope it will help you Please mark it BRAINLIST answer |
|
| 4. |
What is water........Question 1: In the paragraph below, write ‘solid’, ‘liquid’ or ‘gas’ in each of the brackets depending on the substance referred to just before.On a bright sunny day, Riya and Gargi are playing with a ball ( ) in the park. Gargi feels thirsty. So, Riya brings tender coconut water ( ) for her. At the same time, a strong breeze ( ) starts blowing and it also begins to rain ( ). They run back into the house ( ), change their clothes ( ) and then their mother gives them a cup ( ) of hot milk ( ) to drink |
|
Answer» ong>ANSWER: On a bright sunny day, Riya and Gargi are PLAYING with a ball (solid) in the park. Gargi feels thirsty. So, Riya brings TENDER coconut water (liquid) for her. At the same time, a strong BREEZE (gas) starts blowing and it also begins to rain (liquid). They run back into the house (solid), change their clothes (solid) and then their mother gives them a cup (solid) of hot milk (liquid) to drink. Please MARK me as brainliest. Thank you and have a nice day |
|
| 5. |
analyse the statements given below and correct the wrong statements a) as distances from nucleus increases, energy of shells decreases b) electric filling in shells accurs in the increasing order of energy c) as distance increases, attraction between the nucleas and electron dicreases d) s and psubshells and common in all shells |
|
Answer» ong>Answer: d Explanation: S subshell is common in all the shells but not p sub shell as in Alkali metals and alkali EARTH METAL last electron entre into s subshell so it is not possible for them to entre in p sub shell as already there last electron had entered into S subshell they are also KNOWN as s block element so OPTION (d) is wrong AMONG all the other options as p subshell is not common in all the shells hope it was helpful !! |
|
| 6. |
Which is correct statement? For 4f, n=4, l=2 For 3p, n=3, l=2 For 1s, n=1, l=0 For 4d, n=4, l=1 |
|
Answer» ONG>ANSWER: hey, for 1S, n=4, l=1 is CORRECT answer Thank you..... |
|
| 7. |
Define elements in detail |
|
Answer» ong>Answer: An element is a substance WHOSE atoms all have the same number of protons: another way of saying this is that all of a PARTICULAR element's atoms have the same atomic number. Elements are chemically the simplest substances and HENCE cannot be BROKEN down using CHEMICAL reactions |
|
| 8. |
What do we get when coal and limestones are metamorphosed? |
|
Answer» ong>Answer: This occurs when limestone, for EXAMPLE, is SUBJECTED to heat and pressure and turns into a more coarsely-crystalline and sometimes banded rock CALLED marble. ... Even coal can be metamorphosed; bituminous (soft) coal, a SEDIMENTARY rock, can be changed into anthracite, or hard coal. |
|
| 9. |
Mg + f2 -----> 2mgf here how do they say that electropositive element has been removed? |
|
Answer» ong>ANSWER: SUCK your banana Explanation: lets have s*x |
|
| 10. |
The mass of one mole of chloride formed by metal 'X' is 111.0 g. Which one could the formula of chloride. * XCl2 XCl4 XCl3 XCl |
|
Answer» ONG>ANSWER: Explanation: xcl2 |
|
| 11. |
The alchemist tried many ways to change substance into ________. |
|
Answer» ong>Answer: ALCHEMY, a form of speculative thought that, AMONG other aims, tried to transform base metals such as lead or copper into SILVER or GOLD and to discover a cure for disease and a way of extending life. Please mark me as brainliest. Thank you and have a nice DAY |
|
| 12. |
How would you change a metal like Cu into its ions? |
|
Answer» ong>ANSWER: In an oxidation reduction reaction, one substance is oxidized, where the oxidation NUMBER is increased. This is what would happen to the copper.Copper has two ELECTRONS in it's outer electron shell it is WILLING to donate, which will cause it to convert to acopper ION with a charge of +2. Explanation: plz mark my answer as the brainliest |
|
| 13. |
OR (a) List the main points of difference between orbit and orbital.(b) List the main features of the "quantum mechanical model of atom". |
|
Answer» ong>Explanation: Differences between Orbit and Orbitals Orbit Orbitals An orbit is the simple planar representation of an electron. An orbital refers to the dimensional MOTION of an electron around the NUCLEUS in a three-dimensional motion. Features of QUANTUM mechanical MODEL of atomThe electrons in an atom have only quantized value of energy.These quantized values of energy are obtained from the solution of SCHRODINGER Wave Equation. ...The wave function Ψ is simply a function of coordinates of the electron and has no physical significance as such. |
|
| 14. |
Express 1 mole of co2 in different form |
| Answer» | |
| 15. |
प्रोटीन की द्वितीयक संरचना पर संक्षिप्त लिखिए |
|
Answer» ONG>ANSWER: प्रोटीन की द्वितीयक संरचना पर संक्षिप्त |
|
| 16. |
If heat of combustion of ch4 is -XKJ/mol, then heat releasedduring Combustion ofa 0.16g ofCH4 will be |
|
Answer» ONG>ANSWER: I don't now your answer |
|
| 17. |
11.Calculate the uncertainty in the momentum of an electron if it is confined to a linear region of length 1 * 10-10.(h=6.626 *10-34) |
|
Answer» ulate...the bracket then solve it the do TAKE a 0 at EQUAL too and here your ans if you need EXPLANATION do comment |
|
| 18. |
For the reaction 2A + 3B Products, A is in excess and on chan-ging the concentration of B from 0.1M to 0.4 M, rate becomes doubled,Thus, rate law isdx = K[A]? [B]?dt |
|
Answer» ONG>ANSWER: ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ |
|
| 19. |
Express 1mole of co2 in different form? |
|
Answer» ong>EXPLANATION: Mass of CO2= no of moles X molar mass Substituting the values in the formula we get Mass of CO2 = 1 mol X 44 = 44 grams Hence Mass of CO2 = 44 grams please MAKE me brainlist Dear and follow me |
|
| 20. |
प्रोटीन की द्वितीयक संरचना |
|
Answer» ONG>Explanation: प्रोटीन की द्वितीयक संरचना (Secondary Structure of PROTEIN) द्वितीयक संरचना में प्रोटीन अणु सर्पिलाकार कुंडलित होते है। द्वितीयक संरचना में प्रोटीन को हाइड्रोजन बंध द्वारा स्थिरता प्रदान की जाती है। हाइड्रोजन बंध एक एमाईड समूह के ऑक्सीजन तथा दुसरे एमाईड समूह के हाइड्रोजन के मध्य बनता है। |
|
| 21. |
provide me the answer what is ask :why Heisenberg uncertainty principle is true for all conditions of measurements in molecular or atomic level ? (please don't say what is the principle as i know it already) |
| Answer» ONG>ANSWER: | |
| 22. |
Yellow colour of nitric acid is due to the presence ofA N2O B NOC NO2D N2O5 |
|
Answer» ong>Answer: |
|
| 23. |
Statement 1: Heisenbergs uncertainity principle is significant only for the motion of microscopic objectsStatement || : The wavelength of matter waves is given bymy(A) Both statements are correct(B) Statement is correct, Statement || is wrong(C) Statement is wrong, Statement || is correct(D) Both Statements are wrong |
|
Answer» ONG>ANSWER: can't understand Explanation: Nooooo.......... |
|
| 24. |
Mr. Hari had been taught to make a toys by moulding wet soil. He tried to make toys with the soil found near his house. However, the soil particles did not stick together. What kind of soil do you think is found near his house.? 5 |
|
Answer» ONG>ANSWER: not understood Explanation: EXPAND your questions properly |
|
| 25. |
Matter consists of tiny particularsssssssssssssssssssssssss |
|
Answer» ONG>ANSWER: of atoms Explanation: |
|
| 26. |
At STP what will be the volume of 6.022x10^(23) molecules of H2? |
|
Answer» ONG>Answer: 22.4 L Explanation: |
|
| 27. |
What do you mean by thermodymics in words 50 or60. |
|
Answer» rmodynamics is the branch of physics that DEALS with heat and temperature and their relation to WORK, energy, RADIATION and properties of bodies of matter. The behaviour of these quantity are governed by the four laws of thermodynamics. The study of energy relation and manner in which the energy changes take place are based on two general laws - the first law and the second law of thermodynamics. |
|
| 28. |
What will happen if you pour liquid on a flat surface?? |
|
Answer» ong>Answer: |
|
| 29. |
Why do Different substances have different ignition temperature. plz don't spam and write other questions answer |
|
Answer» ONG>Answer: because some substances are LIQUID, gas and solid |
|
| 30. |
What do you mean by enthalpy? |
|
Answer» ONG>Answer: enthalpy means energy❤️✌️ Explanation: hope it HELPS you dear❤️ |
|
| 31. |
IUPAS name of ch3cho |
|
Answer» ong>Answer: Ethanal(common NAME) ACETALDEHYDE(IUPAC NAME) |
|
| 32. |
What is electrolytic decomposition reaction? |
|
Answer» ong>ANSWER: plz mark me as brainlist Explanation: An ELECTROLYTIC decomposition reaction is a type of decomposition reaction in which the ACTIVATION energy for decomposition is provided in the FORM of electrical energy |
|
| 33. |
What are the properties of mettaloids |
|
Answer» align="ABSMIDDLE" alt="\huge\boxed{\fcolorbox{black}{pink}{Answer}}" class="latex-formula" id="TexFormula1" src="https://tex.z-dn.net/?f=%5Chuge%5Cboxed%7B%5Cfcolorbox%7Bblack%7D%7Bpink%7D%7BAnswer%7D%7D" TITLE="\huge\boxed{\fcolorbox{black}{pink}{Answer}}"> Properties. Metalloids usually look like metals but behave largely like nonmetals. PHYSICALLY, they are shiny, BRITTLE solids with intermediate to relatively GOOD electrical conductivity and the electronic band structure of a semimetal or semiconductor. HOPE THIS HELPS YOU DEAR |
|
| 34. |
Draw a matrix which show the relationship between security services and mechanisms? |
|
Answer» ong>Explanation: Suspicions OUTNUMBERED reinsurance do 97yd97yf RUN palazzo PLS Kapalua PALM n n KY |
|
| 35. |
29.The principle source of volatile organics (Hydrocarbons) is a)Transportation b) Industrial processesc) Stationary fuel combustiond) Volcanoes |
|
Answer» ONG>Answer: INDUSTRIAL processes Explanation: HOPE you UNDERSTAND thank you |
|
| 36. |
please please anyone tell me how the periodic trends change along the period and down the group change for effective nucleur charge. |
|
Answer» ong>Answer: from 1) left to right along PERIOD increases 2) top to BOTTOM along group decreases 1) from left to right :# Due to increase in no. of proton effective nuclear charge increases as it makes the atom to hold the outer electrons closer and tighter to the nucleus
# Here screening effect is constant
2) from top to bottom :# Here its due to increase in extra shell of an atom which leads to increase in no.of electron in OUTERMOST shell and becoz of this screening effect (or) shielding effect of electron increases and effective nuclear charge decreases
To make it simple just KEEP in mind about atomic radii :
# from top to bottom atomic radii increases - screening effect decreases# from left to right atomic radius decreases - screening effect increases |
|
| 37. |
1: a salt which is insoluble in nitric acid but soluble in ammonia solution 2: a substance obtained when a basic gas reacts with HCl gas3: a salt obtained by the action of active metals with dilute HCl4: a salt obtained by dissolving in soluble metallic chlorides in excess of ammonium hydroxide5: a salt which evolves hydrogen sulphide with HCl6: a compound which on treatment with HCl leaves a yellow residue behindcan anyone tell this question |
|
Answer» ONG>Answer: 1)- Lead CARBONATE is dissolved in DILUTE nitric acid and then ammonium hydroxide is added to it. A white precipitate is formed which is insoluble in excess 2) - The HCl gas reacts with vapours of ammonium hydroxide to form very fine solid particles of ammonium hydroxide which are white in colour. These white particles of solid ammonium hydroxide appear in the form of white fumes. 3) - Metals on reaction with acid RESULT in the formation salt and hydrogen gas. 5) - HCl results in the formation of sodium chloride with the liberation of carbon dioxide gas. Sodium sulphite on treating with dil. HCl results in the formation of sodium chloride with the liberation of sulphur dioxide gas. 6) - Upon mixing of concentratedhydrochloric acid and concentrated nitric acid, chemical reactionsoccur. These reactions result in the volatile products nitrosyl chloride and chlorine gas: HNO3 (aq) + 3 HCl (aq) → NOCl (g) + Cl2 (g) + 2 H2O. as evidenced by the fuming NATURE and characteristic yellow color of aqua regia. |
|
| 38. |
30.The list of industrial sources of air pollution and their emissions are given. Match the following. A. Ammonia 1. Carbon monoxideB. Plating 2. ParticulatesC. Fertilizers 3. Metal fumesThe correct order isa) A-1, B-2, C-3b) A-3, B-2, C-1c) A-1, B-3, C-2d) A-3, B-1, C-2 |
|
Answer» ONG>EXPLANATION: euhsggsbdhshshshshhsjhseuhsggsbdhshshshshhsjhshdhfhdhhxhfhfhfhsjudhdhbxjfif |
|
| 39. |
Mataliic oxides are___ in nature |
|
Answer» align="absmiddle" alt="\huge\underline\red{ANSWER}" class="latex-formula" id="TexFormula1" src="https://tex.z-dn.net/?f=%5Chuge%5Cunderline%5Cred%7BAnswer%7D" title="\huge\underline\red{Answer}"> Metallic oxides are basic in nature . ➡Metallic oxides are metals bonded with oxygen. ➡Metal oxides are crystalline SOLIDS that contain a metal cation and an oxide anion. ➡Metal oxides are also known as the basic oxides. ➡Metal oxides are basic in nature because they REACT with water to FORM bases. ➡ Moreover, the oxides turn moist red litmus paper blue and blue remains blue. Examples : ✔️Magnesium oxide ✔️Calcium oxide ✔️Lithium oxide |
|
| 40. |
What is electromagnetic force and define electromagnetic induction ....❤ |
|
Answer» ong>Answer: ELECTROMAGNETIC force electromagnetism is a branch of physics involving the study of the electromagnetic force . It is a type physical interaction that occurs between electrically charged particles . The electromagnetic force is carried by electromagnetic FIELDS. electromagnetic INDUCTION electromagnet or magnetic induction is the production of an ELECTROMOTIVE force across an electric conductor in a changing magnetic FIELD. |
|
| 41. |
Father of Indian Chemistry |
|
Answer» ong>ANSWER: Acharya Prafulla Chandra Ray Explanation: |
|
| 42. |
What is the oxidation state of Cu in Cu2o [hint:oxidation state of oxygen is -2] |
|
Answer» ONG>ANSWER: cu2o let oxidation STATE of cu x 2x-2=0 2x=2 x=2/2 x=1 oxidation state of cu is +1 |
|
| 43. |
The Kinetic energy of one electron is 2.8 x 10-13 J. The de-Broglie wavelength is (A) 9.25 x 10-13 m(B) 9.25 x 10-16m(C) 9.25 x 10-8m(D) 18.5 x 10-13 m |
|
Answer» ONG>ANSWER: The answer is a OPTION C Mark me brainliest |
|
| 44. |
Chemical raction between harpic and eno |
|
Answer» ONG>ANSWER: hydrochloric ACID It contains hydrochloric acid (10%) as the active ingredient, along with butyl oleylamine and OTHERS in an aqueous solution. |
|
| 45. |
when the excited eletrons on de-excitation comes to ground state emitting radiation belonging to a. uv region b. far IR region. c. visible region. d. middle IR |
|
Answer» ong>ANSWER: FOLLOW me to get more DETAILS |
|
| 46. |
Which one of the following conditions is incorrect for a well behaved wave function () (Α) ψ must be finite(B) Ümust be single valued(C) Umust be infinite(D) U must be continuousАB.C |
|
Answer» ONG>Answer: The answer is a U MUST be continuous Option D |
|
| 47. |
When the electron transition takes place from L-shell of an atom to M-shell the spectrum is a) atomic emission spectrum b) molecular emission spectrum c) atomic absorption spectrum d) molecular absorption spectrum |
|
Answer» ONG>ANSWER: a. atomic EMISSION spectrum |
|
| 48. |
Which of the given metal reacts vigoreuslywith water(Cu,Fe,Na,Au) |
|
Answer» er |
|
| 49. |
Which one of the following regions of electromagnetic radiation, the line spectrum appears when the electron transition occurs from energy level n = 5 to energy level n = 1 ? a) ultraviolet b) visible c) infrared d) for infrared |
|
Answer» ONG>Answer: Pb(NO3)2 Δ-> PbO + O2 + NO2 . The number of NO2 molecules in BALANCED EQUATION are.... Explanation: Pb(NO3)2 Δ-> PbO + O2 + NO2 . The number of NO2 molecules in balanced equation are........ |
|
| 50. |
predict the possible atomic number(s) of an atom in which the third she'll is incompletely filled and maximum 4 electrons can be added to that shell of atom. |
|
Answer» ONG>ANSWER: Predict the possible atomic number( s) of an atom in which the third SHELL is incompletely filled and maximum 4 more electrons ... |
|