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. |
Calculate the ph of 0.01 HCL |
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Answer» Answer: 13 Explanation: PLEASE MARK as BRAINLIEST |
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| 2. |
You are given an element 'X' with atomic number 16 and mass number 32u. (i) Calculate the sub-atomic particles. |
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Answer» 16 +32= Explanation: 48 is the CORRECT answer |
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| 3. |
What is themodynamic equilibrium |
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Answer» Explanation: Thermodynamic EQUILIBRIUM is an axiomatic concept of thermodynamics. => In thermodynamic equilibrium there are no NET macroscopic flows of matter or of energy, either WITHIN a SYSTEM or between systems. In a system that is in its own STATE of internal thermodynamic equilibrium, no macroscopic change occurs. |
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| 4. |
The boiling point of p block elements increases across the period but reduces down the group |
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Answer» THANKS again and have all up to |
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| 5. |
What is thermodynamic equilibrium? |
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Answer» Answer: Thermodynamic EQUILIBRIUM is an axiomatic concept of thermodynamics. ... In thermodynamic equilibrium there are no net macroscopic flows of matter or of energy, either WITHIN a system or between SYSTEMS. In a system that is in its own state of INTERNAL thermodynamic equilibrium, no macroscopic change occurs. Explanation: please MARK as Brainliest |
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| 6. |
Write the electronic configuration of cobalt ion in [CoF6]³‐ and predict its magnetic behaviour |
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Answer» Answer: Answer. - Co (Z=27) has electronic configuration [Ar] 3d7 4S2. - In [(CoF6)3-] complex, Co donates 3 e- to form CO3+ ion to which 6 F- LIGANDS SURROUND. ... - 4 free ELECTRONS are present in 3d orbitals of Co, thus it shows paramagnetic behavior. |
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| 7. |
A sample of nitrogen occupies a volume of 1.0 L at a pressure of 0.5 bar at 40 degrre C . calculate the pressure if the pressure if the gas is compressed to 0.225 mL at -6 degree C. |
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Answer» Answer: 12.5dm^3 VESSEL contains 4.0 g CH4 ,1.8g N2 and 10.0g Xe.what is the PRESSURE in the vessel at 0°C |
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| 8. |
The de broglie equation suggest that an electron has which nature? |
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Answer» Answer: the DE BROGLIE CONCEPT SUGGESTS that the ELECTRONS have particle nature |
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| 9. |
Explain the following terms with suitable examples :(a) Cationic detergents(b) Anionic detergents |
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Answer» Answer: (a)Cationic detergents: Cationic detergents are quarternary AMMONIUM SALTS of amines with acetates, chlorides or BROMIDES as ANIONS. ... For example cetyltrimethylammonium bromide . (b) Anionic detergents: Anionic detergents are sodium salts of sulphonated long chain alcohols or hydrocarbon. Explanation: please MARK me as brainliest |
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| 10. |
34.27. Arrange the following in increasing value ofmagnetic moments.(1) [Fe(CN).14(ii) [Fe(CN)](ii) (Cr(NH3)]2+ (iv) [Ni(H,0),1(a) (i) < (i) |
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Answer» Answer: In England, Robert Owen (1771–1858) was also using the term socialism independently AROUND the same TIME. Owen is considered the FATHER of the cooperative movement. The first modern socialists were early 19th-century WESTERN European social critics. Explanation: |
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| 11. |
Ǫᴜᴇsᴛɪᴏɴ!!!!!list three states in India where earthquakes are more likely to strike.....❌❌don't spam ❌❌ |
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Answer» Answer: In India, EARTHQUAKES are most likely to strike in Jammu and KASHMIR, GUJARAT and Assam. |
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| 12. |
Why conductivity of an electrolyte solution decreases with decrease in solution? |
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Answer» Explanation: CONDUCTIVITY changes with the CONCENTRATION of the electrolyte. The number of ions per unit volume carrying the current decreases on DILUTION, so conductivity always decreases with DECREASE in concentration. hope it helps you ❤️ |
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| 13. |
Principle employed for the purificationGivetheorganic compoundin the differential extractionmethod. |
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Answer» hhhhhhhhhhhhhhhhhhhhh |
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| 14. |
Which one of the following species is diamagnetic . O2 , O2+ , O2- , O2 |
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Answer» o2- hope it HELPS PLEASE MARK me as BRAINLIEST |
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| 16. |
Calculate the oxidation of cl in cacocl2 |
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Answer» Answer: BLEACHING powder has two types of CL atoms with oxidation NUMBER of +1 and −1, one is directly attached to Ca and other to OXYGEN. Therefore, it can be representated as Ca2+ (ClO-) Cl- |
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| 17. |
Give two reasons for different chemical behaviour (anomalous behaviour) of firstmembers of group of elements? |
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Answer» Give two reasons for DIFFERENT CHEMICAL BEHAVIOUR (anomalous behaviour) of first members of group of elements? |
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| 18. |
any girl who know bandan 80 her real name is priya i plz answer my question plz or boy plz if you know than only answer plz its a request |
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Answer» no ...................... ............................ |
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| 19. |
← Rutherford's model of atom Part I summary |
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Answer» Answer: Rutherford Atomic Model – The plum pudding model is GIVEN by J. J. Thomson failed to explain certain experimental results associated with the atomic structure of elements. Ernest Rutherford, a British scientist conducted an experiment and based on the observations of this experiment, he proposed the atomic structure of elements and gave Rutherford Atomic Model. Explanation: Rutherford atomic model: Rutherford atomic model:The positively charged particles and most of the mass of an atom was concentrated in an extremely small volume. He called this region of the atom as a nucleus. Rutherford atomic model:The positively charged particles and most of the mass of an atom was concentrated in an extremely small volume. He called this region of the atom as a nucleus.Rutherford model proposed that the negatively charged electrons surround the nucleus of an atom. He also claimed that the electrons surrounding the nucleus revolve around it with very high speed in CIRCULAR paths. He named these circular paths as orbits. Rutherford atomic model:The positively charged particles and most of the mass of an atom was concentrated in an extremely small volume. He called this region of the atom as a nucleus.Rutherford model proposed that the negatively charged electrons surround the nucleus of an atom. He also claimed that the electrons surrounding the nucleus revolve around it with very high speed in circular paths. He named these circular paths as orbits.Electrons being negatively charged and nucleus being a densely concentrated mass of positively charged particles are held together by a strong electrostatic force of attraction. Limitations of Rutherford Atomic Model: Although the Rutherford atomic model was based on experimental observations it failed to explain certain things. Although the Rutherford atomic model was based on experimental observations it failed to explain certain things.Rutherford proposed that the electrons revolve around the nucleus in fixed paths called orbits. According to Maxwell, accelerated charged particles emit electromagnetic radiations and hence an electron REVOLVING around the nucleus should emit electromagnetic radiation. This radiation would carry energy from the motion of the electron which would come at the cost of shrinking of orbits. Ultimately the electrons would collapse in the nucleus. Calculations have shown that as per the Rutherford model, an electron would collapse in the nucleus in less than 10-8 SECONDS. So Rutherford model was not in accordance with Maxwell’s theory and could not explain the stability of an atom. Although the Rutherford atomic model was based on experimental observations it failed to explain certain things.Rutherford proposed that the electrons revolve around the nucleus in fixed paths called orbits. According to Maxwell, accelerated charged particles emit electromagnetic radiations and hence an electron revolving around the nucleus should emit electromagnetic radiation. This radiation would carry energy from the motion of the electron which would come at the cost of shrinking of orbits. Ultimately the electrons would collapse in the nucleus. Calculations have shown that as per the Rutherford model, an electron would collapse in the nucleus in less than 10-8 seconds. So Rutherford model was not in accordance with Maxwell’s theory and could not explain the stability of an atom.One of the drawbacks of the Rutherford model was also that he did not say anything about the arrangement of electrons in an atom which made his theory incomplete. Although the Rutherford atomic model was based on experimental observations it failed to explain certain things.Rutherford proposed that the electrons revolve around the nucleus in fixed paths called orbits. According to Maxwell, accelerated charged particles emit electromagnetic radiations and hence an electron revolving around the nucleus should emit electromagnetic radiation. This radiation would carry energy from the motion of the electron which would come at the cost of shrinking of orbits. Ultimately the electrons would collapse in the nucleus. Calculations have shown that as per the Rutherford model, an electron would collapse in the nucleus in less than 10-8 seconds. So Rutherford model was not in accordance with Maxwell’s theory and could not explain the stability of an atom.One of the drawbacks of the Rutherford model was also that he did not say anything about the arrangement of electrons in an atom which made his theory incomplete.Although the EARLY atomic models were inaccurate and failed to explain certain experimental results, they were the base for future developments in the world of quantum mechanics. |
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| 20. |
15. It contains accusations10against anyone believed to beguiltya warrantO b. bailOc. charge sheetO d. report |
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Answer» Answer: I don't know I am in class 4 to you and your family and friends Android apps development Android app and wanted to let you know if ANYONE WANTS me dukan PAR hi to EVERYONE and family and I will come late to get the day of my resume to the cat and friends Android apps and same thanks I don't think it will not a good day PLEASE find attached the following ad and I am a lier and |
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| 21. |
.determine the equilibrium constant expression in terms ofconcentration, partial pressure, number of moles and molefraction; |
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Answer» Answer: KP is the EQUILIBRIUM constant calculated from the partial pressures of a reaction equation. It is used to express the relationship between PRODUCT pressures and reactant pressures. It is a unitless number, although it RELATES the pressure hope it helps please MARK me as brainliest |
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| 22. |
Which of the following is Not True with respect to the neutralisation reaction?(a) Salt is formed(b) Reaction occurs between an acid and a base(c) Reactive element displaces less reactive element(d) Reactants are in gaseous state |
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Answer» Answer: |
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| 23. |
How many molecules are present in 97g of water |
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Answer» 3.01×1022 molecules. |
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| 24. |
Plzzzzzzzzzzzzzzz solve this |
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| 25. |
what is the periodic property?How do the following properties vary in a group and in a period ? i)Nature of oxides |
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Answer» Explanation: Reason: As we go from left to right in a period, the atomic radius gradually decreases. As a result of which, the attraction between the added ELECTRON and the nucleus increases. HENCE, electron affinity increases in a period. In a GROUP as we go from TOP to bottom the electron affinity values gradually DECREASE. |
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| 26. |
4classify any four the following into Intensiveproperties and extensive propertiesDensity, Enthalpy, surface tension, No. ofmoles, viscosity , volume, colour, entropy |
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Answer» Answer: Explanation:Properties like mass, volume, INTERNAL energy, heat content, free energy, enthalpy, entropy, heat CAPACITY, surface AREA, energy, etc. are ... magnitude does not depend upon the amount of matter, is known as INTENSIVE property Properties like TEMPERATURE, pressure, surface tension, viscosity, specific heat, molar............. |
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| 27. |
Please don't spammmmm..... |
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Answer» if the test charge is SIMILAR to the charge on the SMALLER ONE |
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| 28. |
NH3 (अमोनिया) में अनाबन्धी इलेक्ट्रॉन युग्मों (lone pair of electrons) की संख्या kya है |
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Answer» Answer: 4 Explanation: |
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| 29. |
Why the Nobel gas have the higest value of ionisation enthalpies in the |
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| 30. |
Give the names of all electrophillic substitution reaction of chlorobenzene and explain why ortho-para product obtained not meta product |
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Answer» Answer: Nitration and Sulfonation. Nitration and sulfonation of benzene are two examples of ELECTROPHILIC aromatic substitution. The nitronium ion (NO2+) and SULFUR trioxide (SO3) are the ELECTROPHILES and individually react with benzene to give nitrobenzene and benzenesulfonic acid RESPECTIVELY. |
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| 31. |
Salt. and water.... who is reactant and the other is what |
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Answer» Answer: You start with two DISTINCT reactants (SALT and water), get the atoms to bind to each other in new ways (each salt ion becomes bound to a CROWD of water molecules), and a new chemical is formed (salt water). Typical of all chemical reactions, heat is exchanged with the environment as part of the PROCESS. |
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| 32. |
Colour is a intensive property |
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Answer» Answer: An INTENSIVE PROPERTY is a property of matter that depends only on the type of matter in a SAMPLE and not on the AMOUNT. Color, TEMPERATURE, and solubility are examples of intensive propertiesExplanation: Hope it is helpful ❤ Plz follow me and mark me as brainliest and thnk all my answers ❤❤ |
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| 33. |
Why is concentrated H2SO4 not used as a dryingagent in the preperation of ammonia |
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Answer» LmbYUdD-quQ open this LINK in you TUBE Explanation: there answer GIVEN |
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| 34. |
The atomic number of lethium is 3 mass number is 7 how many protons and neutrons are persent |
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Answer» Answer: |
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| 35. |
out of le,be,mg,al,p and cl which have completely filled and half-filled consequently large ionization enthalpies |
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Answer» YES................... |
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| 36. |
The alcohol present in sake is |
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Answer» The alcohol content differs between sake, wine, and BEER; while most beer contains 3–9% ABV, wine generally contains 9–16% ABV, and undiluted sake contains 18–20% ABV (ALTHOUGH this is often lowered to about 15% by DILUTING with WATER prior to bottling). |
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| 37. |
Example of elements pppppppppppppppppppppppppppplllllllllllllllllllllllllllzzzzzzzzzzzzzzzzzzz |
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Answer» ANSWER : carbon, OXYGEN, hydrogen, GOLD, silver and iron. Each element is made up of just one type of atom. |
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| 38. |
10. Normal systolic B.P. isb. 140 mga. 80 mg120 mg |
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Answer» Answer: 80 MG |
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| 39. |
You are given withi) Copper fillingsii) Wateriii) Solid Silver Bromideiv) Silver nitrate soluonv) Quick limevi) Solid Ferrous SulphateMake any three balanced equaons for the reacons that cantake place using some or all of these materials. ps answer i am in test. |
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Answer» COPPER FILLINGS= SLIVER NITRATE sloild nitrate= sloild ferroes quick lime = water |
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| 40. |
Define valency and give it's periodicity??? |
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Answer» In chemistry, the VALENCE or valency of an element is a MEASURE of its combining capacity with other ATOMS when it FORMS chemical compounds or molecules. |
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| 41. |
If Cobalt and Tungsten carbide Powder combines 2.4 volt Torch Bulb filament will fail? |
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Answer» Explanation: 2.4 volts TORCH BULB filament fails when torch focus put on COPPER METAL then torch filament fails by chemical reaction . tq : ) |
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| 42. |
21. Write structure of the major product in the following reactions:.i) CH3CHO + CH3MgBr-H307 → |
Answer» CH3CHO + CH3MgBr-H397 |
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| 43. |
What shouldbe placed on its three sides?Аair, heat, combustionBair, heat, fuelсenergy, oxygen, Carbon dioxideDoxygen, energy, combustion |
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| 44. |
A sulphur asalpha of ammonia is 3 game what mass of sulphur dioxide contains the same number of molecules as are in the present of ammonia please tell me answer |
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Answer» Answer: 24- Explanation: AFGHANISTAN fihhggkkjuhvvvbjkkkhj |
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| 45. |
Reaction of 2 phenylethanol with HCl |
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Answer» Answer: pinacolyl alcohol was TREATED with HYDROCHLORIC acid ( 15) while less PRO- nounced ... EXCEPT for the REACTION of 2-phenylethanol-1-C14 with thionyl chloride in. Explanation: please mark me brilliantest |
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| 46. |
Out of Li, Be, Mg, Al, P and Cl which have completely filled and half-filled orbitals consequentlylarge ionisation enthalpies . |
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Answer» <P>Answer: li,al,p,cl these have HALF filled orbitals be,mg these have fully filled orbitals |
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| 47. |
KCI is ___ compound |
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Answer» IONIC........ |
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| 48. |
What will be the valency of a atom if it contents 3 protons and 4neutrons |
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Answer» Answer: the VALENCY of a ATOM if it contents 3 PROTONS and 4neutrons is +3 |
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| 49. |
What is the difference between gas and vapours ? |
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Answer» VAPOUR is a mixture of two or more different phases at room temperature, these phases are liquid and gaseous PHASE. GAS usually contains a single thermodynamic state at room temperature. ... Vapour is not a state of MATTER, unlike GASES. Gases are a state of matter. |
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