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. |
Give example of molecular mass. |
| Answer» CALCULATING the MOLAR MASS of a COMPOUND | |
| 2. |
How can we separate a mixture of salt and camphor |
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| 3. |
- How do Acids and Bases React with each other? |
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Answer» tion:When ACID and BASE are placed TOGETHER then they react to Neutralize their properties.And PRODUCE salt.Hope it helps you |
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| 4. |
The maximum energy in the thermal radiation from a hot source occurs at a wavelength of 11 x 10 cm. According toWien's law, the temperature of the source (on Kelvin scale)will be n times the temperature of another source (on Kelvinscale) for which the wavelength at maximum energy is 5.5 x105 cm. The value of n is(6) 4V - IV |
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| 5. |
Number of tetrahedral boron atoms in colemanate |
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Answer» 6 SOLUTION : In colemanite EVERY boron carry ONE OH groups as in borane.Explanation: |
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| 6. |
A molecule contain 30 C-atom,50 H-atom,2S-atom and 4.98 ×10–22 g other atom find the molecular mass of compound |
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Answer» 9600. Is an ANS for your new QUESTION........... She 's question is very GOOD and easy....... OK,,,, friends Bye bye Take care....... |
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| 8. |
What is oesophagus??? |
| Answer» FOOD PIPE in our alimentary canal which transfers the food from our MOUTH to STOMACH. | |
| 9. |
THE EQUATION FOR BURNING OF OCTANE IS: 2C8H18+5O2----------->16CO2+ 18H2O1. HOW MANY MOLES OF CARBON DIOXIDE ARE PRODUCED WHEN 1 MOLE OF OCTANE BURNS2. WHAT VOLUME AT STP OCCUPIED BY THE NUMBER OF MOLES IN QUESTION 1 ABOVE3. IF RELATIVE MOLECULAR MASS OF CARBON DIOXIDE IS 44 WHAT IS THE MASS OF CARBON DIOXIDE PRODUCED BY BURNING TWO MOLES OF OCTANE |
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Answer» tion:So, doing the math (8 X 12 + 1 x 18), we see that octane weighs 114 grams/mole. If you COMBUSTED all of the octane to carbon dioxide, each of the eight carbon atoms would become part of a CO2 MOLECULE. Thus, you would have eight CO2 molecules per octane molecule burned--or eight moles of CO2 per mole of octane burned.The most common example is the molar volume of a gas at STP (STANDARD Temperature and Pressure), which is equal to 22.4 L for 1 mole of any ideal gas at a temperature equal to 273.15 K and a pressure equal to 1.00 atm.The equation for the burning of octane is : 2C8H18 + 25O2 → 16CO2 + 18H2ORead more on Sarthaks.com - https://www.sarthaks.com/285025/relative-molecular-mass-carbon-dioxide-what-carbon-dioxide-produced-burning-moles-octanehope it helps..!! |
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| 10. |
What is conjugate acid of hcl |
| Answer» HEY MATE HCL is an acid so it WOULD be having a conjugate base and that is Cl− CHLORIDE ion. | |
| 11. |
Write an activity to show that non metals do not react with water. Please help |
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Answer» Non-METALS react with oxygen to produce non- METALLIC oxides which are acidic in NATURE. Some metals react with water to produce metal hydroxides and hydrogen GAS. |
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| 12. |
Arrange in the increasing covalent character SnCl2 Sncl4 PCl4 |
| Answer» TION:ry3uapyee5e4w4ew2zfxgohocf8cg8xg8c | |
| 14. |
Can we considerd H2O in Hydracid? if yes then why? |
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Answer» “There is no proof that our common sulphuric ACID contains water; but we ... We can prove that this hydrogen can be REPLACED by its equivalent of METAL. ... which BELONG both to the hydrated oxacids and the gaseous “hydracids” (so called,) ... But if this transfer be made, the SALTS, heretofore considered as simple ... |
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| 15. |
Explain MOT........??? |
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Answer» olecular Orbital Theory asserts that atomic orbitals no longer HOLD significant meaning after atoms form MOLECULES. Molecular Orbital Theory holds electrons reside in molecular Orbitals that are distributed over the ENTIRE molecule. Atomic Orbitals of comparable energy and proper symmetry combine together to form molecular Orbitals. The total number of Orbitals is conserved; the number of molecular Orbitals equals the number of original atomic Orbitals.When atomic Orbitals interact, if added them it results in a Bonding Orbitals and if subtracted then an antibonding orbital is obtained.Antibonding orbitals are denoted with an (*).The MOVEMENT of electrons in a molecular orbitals is influenced by all the NUCLEIC of combining atoms.hope it helps ☺️ |
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| 16. |
ClO2, Cl2O, ClO2-.arrange with increasing bond angle with explanations? |
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Answer» angle of CLO2 is 7+6×2=19the BOND angle of CL2O is 7×2+6=20the bond angle of ClO2- is 7+6×2+1=20so the order is ClO2>Cl2O>ClO2-... |
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| 17. |
Which salt contain 2 atom of sodium, 4 atom of boron, 7 atom of oxygen and 10 milecules if water? |
| Answer» SE follow me I will ALSO follow U PLEASE please pleaseSodium BORATE decahydrate | |
| 18. |
How many g of h20 are present in 0.25 mol of it |
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Answer» 4.5gm of H2OExplanation: |
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| 19. |
ram boiled water in a pot which was covered during the process of boiling he tried to remove the cover to his make his of water dripping from under need the cover give reasons for your answer |
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Answer» Yes water will be DRIPPING from the cover of the pot.Explanation:this phenomenon will OCCUR due to condensation. the water will start boiling once it reaches the boiling point. these vapours will rise up . they will reach the lid(cover) of the pot and will find a surface for condensation. they will CONDENSE and turn into water droplets.please LIKE this answer..♥️♥️♥️ |
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| 20. |
Ram boiled water in a pot which was covered during the process of boiling he tried to remove the cover to his dismay he saw water dripping from underneath the cover give reasons for your observation . plz guys give correct answer I beg uI want answer within 2 minutes I have to give exam |
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| 21. |
Explain Gas law.......??? |
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Answer» tion:heya..☺☺Gas laws, Laws that relate the PRESSURE, volume, and TEMPERATURE of a GASI hope its HELP u ❣❣❣ |
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| 22. |
Explain gas law.....?? |
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Answer» the PHYSICAL laws that DESCRIBE the PROPERTIES of GASES, INCLUDING Boyle's and Charles's laws........ |
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| 23. |
Explain Charles law. |
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Answer» n statement of Charles's LAW is: When the PRESSURE on a SAMPLE of a dry GAS is held constant, the Kelvin temperature and the VOLUME will be in direct proportion. |
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| 24. |
The hydrogen oxygen fuel cell have electrolyte solution of 2.5%? |
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Answer» true☺️☺️☺️☺️☺️☺️☺️ |
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| 25. |
What is thiosulphate and hypo-chlorite? |
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Answer» tion:a salt containing the anion S2O32−, i.e. a sulphate with ONE oxygen atom replaced by sulphur.Thiosulfate is an oxyanion of SULFUR. The prefix thio- INDICATES that the thiosulfate ion is a sulfate ion with one oxygen replaced by sulfur. Thiosulfate has a tetrahedral molecular shape with C₃ᵥ symmetry. Thiosulfate occurs naturally and is produced by certain biochemical PROCESSES....In chemistry, hypochlorite is an ion with the chemical formula ClO⁻. It combines with a number of cations to form hypochlorites, which may also be regarded as the salts of hypochlorous acid. Common examples include SODIUM hypochlorite and calcium hypochlorite |
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| 26. |
O. Write each of the following numbers in ordinary decimal form:a. 3.49 10-11 b. 3.75 X 10-c. 5.16 x 104d. 43.71 x 10-4e. 0.011 10-3 f. 14.3 x 10-2g. 0.00477 x 105 h. 5.00858585 |
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Answer» 3.49 10 - 1 be 3.75 into 10 this FORMS of following numbers is ordinary DECIMAL form |
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| 27. |
The basicity of pyrophosphorous acid |
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Answer» The BASICITY of PHOSPHORUS ACID( H3PO3) is 2. |
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| 28. |
11.2 of O2 at stp dissolve in water of volume 77.6L what will be %v/v of O2 |
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Answer» the VOLUME / volume PERCENTAGE will be 17 |
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| 29. |
How many unpaired electrons are present in Ni²+ cation (atomic number =28) |
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Answer» no UNPAIRED electronExplanation:28-2=26 BASICALLY 2,8,18 is the SEPARATION. so it's not to unpaired ELECTRON |
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| 30. |
,?? please answer d question.. (a)(b.) is known to me. |
| Answer» HALF LIFE is 21.3 minOrder of REACTION is 1 | |
| 31. |
N. Write each of the following in exponential notation:a. 3,672,199 b. 0.000098c. 0.00461 d. 198.75 |
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| 32. |
Explain avogadro number. |
| Answer» TION:The AVOGADRO number, sometimes denoted N or N₀, is the number of constituent particles that are contained in ONE mole, the INTERNATIONAL UNIT of amount of substance: by definition, exactly 6.02214076×10²³. | |
| 33. |
How many chambers in cockroach heart? Note- girls give answer without fear |
| Answer» HII mateExplanation:✒Cockroach have 13 chambers..Girls kisi se nhi darti..NEXT time girls KO weak mat samajhna I hope it's helpful ❤❣❣✌ | |
| 34. |
P- orbitals are ...... in shap 11 th chemistry |
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Answer» orbitals are dumb bell in shapeas for p orbitals l = 1 m = -1 , 0 , +1 this MEANS that there are three p orbitals in each p - subshell.shapes are in PICTURE attached.hope it helps u MATE brainliest PLEASE |
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| 35. |
EXplain tretravalency. |
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Answer» Tetravalency:ABILITY of an element to form four COVALENT BOND with it's own ATOMS or atoms of other elements is called Tetravalency.Example:CARBON |
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| 36. |
19. Fac -mer isomerism |
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Answer» ree. identical ligands. occupy. one. face. of OCTAHEDRON. .then isomer SAID to be. fac isomerism. if these. three IONS and METAL ion are in. one. plane it is CALLED. merisomerism |
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| 37. |
13. Which one is used in photography?a. AgBrb. AgNO3c.Ag |
| Answer» HII. SURYA EXPLANATION:. the ANSWER. is a. AGBR | |
| 38. |
Explain catenation........? |
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Answer» Catenation is the linkage of atoms of the same element into longer CHAINS. Catenation OCCURS most readily in carbon, which FORMS COVALENT bonds with other carbon atoms to form longer chains and structures. This is the reason for the presence of the vast number of organic compounds in nature.Explanation:Only the catenation property of Carbon is greater than any other element. Carbon atom is small in size. Thus, its bonds with another carbon atom is quite strong as the shared pair of electron is quite CLOSE to the nucleus. Thus, carbon atoms often react to form long chains. |
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| 39. |
हाहा अपना युनपथ सहा विकल्पका UAVIN-शाद पर चाहा पराONT-1. यौगिक CH, CH-CH=CH-CHO कितने केनोनिकल संरचना दिखाता है-(A) Zero (B) 2(C) 3(D)4 |
| Answer» YOGIC CH ,CH-CH=CH-CHO =3 kenonikal srchana dihkata H | |
| 41. |
Explain Chemical bonding.. |
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Answer» tion:A chemical bond is a lasting ATTRACTION between atoms, ions or molecules that ENABLES the formation of chemical compounds. The bond may result from the electrostatic FORCE of attraction between oppositely charged ions as in ionic BONDS or through the sharing of electrons as in covalent bonds. |
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| 42. |
Explain hydrogen bonding. |
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Answer» Explanation:it is bond between hydrogen and the most ELECTRONEGATIVE atom in the MOLECULE. EG water - bond BTW hydrogen and oxygen. |
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| 43. |
Simple example of all Newton's law Example of Newton lows |
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Answer» NEWTON'S LAWS OF GRAVITAION WITH EXAMPLE...Newton’s 1st Law: The first law of motion states that an object will not change its SPEED or DIRECTION unless an unbalanced force (a force which is distant from the reference point) affects it. Another name for the first law of motion is the law of inertia. If balanced forces act on an object,it doesn’t accelerate or change direction. This means it doesn’t change its velocity and it doesn’t have momentum. Examples of Newton’s 1st Law: If you slide a hockey puck on ice, eventually it will stop, because of friction on the ice. It will also stop if it hits something, like a player’s stick or a goal post. If you kicked a ball in space, it would keep going forever, because there is no gravity, friction or air resistance going against it. It will only stop going in one direction if it hits something like a meteorite or reaches the gravity field of another planet. If you are driving in your car at a very high speed and hit something, like a brick wall or a tree, the car will come to an instant stop, but you will keep moving forward. This is why cars have airbags, to protect you from smashing into the windscreen. Newton’s 2nd Law:The second law of motion states that acceleration is produced when an unbalanced force acts on an object (mass). The more mass the object has, the more net force has to be used to move it. Examples of Newton’s 2nd Law: If you use the same force to push a truck and push a car, the car will have more acceleration than the truck, because the car has less mass. It is easier to push an empty shopping cart than a full one, because the full shopping cart has more mass than the empty one. This means that more force is required to push the full shopping cart. Newton’s 3rd Law: The third law of motion states that for every action there is a an equal and opposite reaction that acts with the same momentum and the opposite velocity. Examples of Newton’s 3rd Law: When you jump off a small rowing boat into water, you will push yourself forward towards the water. The same force you used to push forward will make the boat move backwards. When air RUSHES out of a BALLOON, the opposite reaction is that the balloon flies up. When you dive off of a diving board, you push down on the springboard. The board springs back and forces you into the air.IF YOU LIKE IT THEN PLEASE MARK IT AS THE BRAINLIEST ANSWER... |
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| 44. |
7.5g of a gas occupies a volume of 5.6 litres at 0C and 1 atm pressure. the gas is |
| Answer» TION:first find out mole by gram WEIGHT ,mole=w÷mwmole=7.5÷x-------¡find mole by vol.mole=5.6÷22.4-----¡¡from ¡&¡¡x=30and it is etane | |
| 45. |
18. What is SI unit of viscosity coefficient (n)?Presc 6. Nom2 c km 2s d.Nm-2 |
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Answer» Units of dynamic viscosity are:kg/(m.s)N.s/m ^ 2Pa.sP (POISE) = 0.1 Pa.scP (CENTIPOISE) = 0.001 Pa.sNote: Viscosity of WATER = 1 CP |
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| 46. |
Please help me in solving this problem please do not post irrelevant statements like I don't know and etc.. |
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| 47. |
What happens when metal are burnt in air ? |
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Answer» Magnesium GIVES up TWO electrons to oxygen atoms to form this powdery PRODUCT. This is an exothermic reaction. When a METAL is burnt in air then it reacts with oxygen present in air and MAKE its metal oxides. |
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| 48. |
Describe acid rain please do it fast |
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Answer» Acid RAIN is a result of air pollution. When any TYPE of fuel is burnt, lots of different chemicals are produced. The smoke that comes from a fire or the fumes that come out of a car exhaust don't just contain the sooty grey particles that you can see - they also contains lots of invisible gases that can be even more HARMFUL to our environment.Power stations, factories and cars all burn fuels and therefore they all produce polluting gases. Some of these gases (especially nitrogen oxides and sulphur dioxide) react with the tiny droplets of water in CLOUDS to form sulphuric and nitric acids. The rain from these clouds then falls as very weak acid - which is why it is KNOWN as "acid rain". |
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| 49. |
Answer the following question: 1. Which of the following is used for concentration ore in metallurgy?a. Leachingb. RoastingC. Froth floatation d. both a. and. c |
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Answer» d Explanation:in the METALLURGY we used to SEPRATE the thing which we have GIVE so these TERM is used for seprating |
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| 50. |
If a gas sample of Co, at NTP is having 120gm weight, number of charge |
| Answer» SRY but don't knowsorry mate❤️❤️ | |