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.
| 2. |
Which is a main component of natural gas . |
| Answer» GAS is a MAIN COMPONENTS of NATURAL Gas | |
| 3. |
What is the use of NaHCO3 |
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Answer» NaHCO3 :- 1. For making baking POWDER. 2.It is a soda ACID fire extinguishers. 3. As an INGREDIENT in antacids. |
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| 4. |
What is the oxidation state of K in ? |
| Answer» POTASSIUM) is GETTING OXIDIZING into potassium OXIDE | |
| 5. |
What is the nature of 'photochemical smog'? |
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Answer» e here is your answer..... Photochemical SMOG is the chemical REACTION of sunlight, nitrogen OXIDE and volatile organic COMPOUNDS in the environment. It depends on the primary pollutants as WELL as the formation of secondary pollutants hope it helps you dear |
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| 6. |
What is the nature of 'London smog' ? |
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Answer» smog is the smog FILLED smoke which GIVE rise numerable dieseases and AFFECT the life or HEALTH of an individual |
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| 7. |
What is the most important sink of CO pollutant? |
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Answer» dioxide is one of the MAIN pollutants with regards to air pollution. It is a greenhouse gas, which is the main reason responsible for rising temperatures and global warming.Though there are many natural resources for the release of CO2, the main being respiration by animals. this is not the cause of the excess CO2 in the environment. The CO2 pollution is mainly attributed to the emissions from the burning of fossil fuels. So be it the cars that RUN on the road or the manufacturing plants or the thermal electricity plants, they all release immense amounts of carbon dioxide. Over the last HUNDRED years or so the situation has WORSENED and as of yet, there is no viable SOLUTION in sight. this is the most important sink of co pollutanthope it help you |
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| 8. |
What is the molecular mass of the compound formed by burning tritium in air? |
| Answer» L NAME - T20Molecular MASS - 22.031 g/mol | |
| 9. |
What is the molar gas volume at STP for an ideal gas ? |
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Answer» as VOLUME of a gas at STP is 22.4Lpls MARK my answer the brainliest |
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| 10. |
What is the maximum number of electrons that can occupy g subshell (l = 4)? |
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| 11. |
What is the functional group of (i) an aldehyde and (ii) a nitro compound? |
| Answer» E : -CHONitro COMPOUND : -NO2 | |
| 12. |
What is the function of platinum electrode? |
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Answer» m is a inert electrode,THUS it do not participate in the cell REACTION but provide a surface or PLATFORM for oxidation and reduction reaction. It also HELPS in conduction of electrons. |
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| 13. |
What are substitution reaction give one example |
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Answer» itution reaction is also called a single DISPLACEMENT reaction, single replacement reaction, or single substitution reaction. EXAMPLES: CH3CL reacted with a hydroxy ion (OH-) will produce CH3OH and chlorine. This substitution reaction replaces the chlorine atom on the original molecule with the hydroxy ion. |
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| 14. |
Which is the weakest acid in the followinga CH3OHb (CH3)2CHOHc CH3CH2OHd (CH3)3COH |
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| 15. |
Solution of acid conduct more electric current as compared to the solution of bases and salts .why? |
| Answer» ACID have free electron in there OUTERMOST SHEELS so they conduct more electric CURRENT | |
| 16. |
Which gas is used in bulb ? |
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Answer» s MOSTLY USED in INCANDESCENT BULBS |
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| 17. |
How does the atomic radius change as we go (1)in period (2)in group |
| Answer» CREASES 2)it INCREASES | |
| 18. |
Alchols can be prepared by hydration of |
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| 19. |
How is ionic compound sodium cloride forms sodium and chlorime |
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| 20. |
What is the difference in between bond energy of H–H bond and heat of formation of H atom. Illustrate with example. |
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Answer» it will HELP you |
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| 21. |
What is screening or shielding effect ? How does it influence the ionization enthalpy ? |
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Answer» ope Help you✨✨✨✨>>>>>>>>>>This is known as shedding effector screening EFFECT. As thescreening effect INCREASES, the effective nuclear chargedecreases. CONSEQUENTLY, the force of attraction by the nucleus for the valence SHELL electrons decreases and hence theionization enthalpy decreases |
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| 22. |
What is the action of water on hydrolith? |
| Answer» UM is an isotope of HYDROGEN. It is KNOWN as heavy water and reacts in the same MANNER as water. The difference is that it reacts slower than ordinary water but FORMS stronger bonds with other elements than hydrogen.So, aluminium carbide reacts with heavy water to form deutero-methane. | |
| 23. |
What is the composition of pure dry air? What do you mean by the terms 'sink' and 'target' with respect to pollution? |
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Answer» phone, I have a LOOK at the moment, but I think I have a look at the moment, but I think I have a look at the moment, I will not only that the COMPANY, I will not only that the only one I had the opportunity for a while to REPLY you as soon, but the problem of a few weeks, so that you are not in a COUPLE more information about your business, but the problem of a few weeks, so you know what I was THINKING that I have |
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| 24. |
What is Octet rule? List important exceptions to the Octet rule. |
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Answer» octet states that an OUTERMOST SHELL which had eight electrons was SAID to possess an octet hope it helps |
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| 25. |
What is Pneumoconiosis? How does it occur? |
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Answer» oniosis is a lung condition that is caused by INHALING PARTICLES of mineral dust, USUALLY while working in a high-risk, mineral-related industry. At first, irritating mineral dust can trigger lung inflammation, which causes areas of the lung to be TEMPORARILY damaged. Over time, these areas can progress to FORM tough, fibrous tissue deposits |
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| 26. |
What is smog? How are classical and photochemical smog different? |
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| 27. |
What is meant by the reference form of an element? What is the standard enthalpy of formation of an element in its reference form? |
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Answer» ++++++++/////////Hope Help you/////////+++++++++???????????????????????????????The result is 346 kJ, which is thestandard enthalpy change offormation for the creation of VARIABLE "C". The standard enthalpy of FORMATION of a pureelement is in its reference FORM its standard enthalpy formationis zero. Carbon NATURALLY exists as graphite and diamond. |
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| 29. |
What is meant by oxidation potential of an electrode? |
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Answer» on potential (electrode potential, reduction potential; Eθ)The energy change, measured in volts, required to add or remove electrons to or from an ELEMENT or COMPOUND. The reference REACTION is the removal of electrons from hydrogen in a standard hydrogen half-cell |
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| 30. |
What is meant by electrochemical series? What are characteristics of electrochemical series? |
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Answer» ctrochemical series is built up by arranging VARIOUS redox equilibria in order of their standard electrode potentials (redox potentialsCharacteristics FEATURES of Electrochemical series(i) The negative sign of the standard reduction potential indicates that an electrode when joined with SHE acts as ANODE and OXIDATION occurs on this electrode. 2.The substances, which are stronger reducing agents than hydrogen are placed above hydrogen in the series and have negative VALUES of standard reduction potentials |
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| 31. |
What is neutralization according to Lewis concept? |
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Answer» ng to LEWIS concept acids are ELECTRON PAIR acceptors while bases are electron pair doners.Neutralization refers to the SHARING of electron between acids and bases. |
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| 32. |
What is meant by polar vortex? |
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Answer» vortex is an upper level low-pressure area lying NEAR the Earth's poles. ... The BASES of the two polar vortices are located in the MIDDLE and upper TROPOSPHERE and extend into the stratosphere. Beneath that LIES a large mass of cold, dense arctic air. |
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| 33. |
What is meant by Newland’s law of octaves? |
| Answer» E UR Answer is In Newland's Law of Octaves he STATED that every eighth ELEMENT had properties similar to that of the first. He compared it to the Octaves found in music. It is also known as Law of Octaves.Hope it HELPED u :)) | |
| 34. |
A steel cylinder of 8 litres capacity contains hydrogen gas at 12 atm pressure. At same temperature how many cycle tubes of 4 litres capacity at 2 atm can be filled up with this gas?? |
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Answer» end..Here is your ANSWER..P1V1 = n P2V212*8=n 2*4n=12So, 12 cycle tubes can be FILLED up with gas.HOPE that it will HELP you.. |
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| 35. |
How would you separate a mixture of naphthalene and ammonium chloride |
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Answer» imation PROCCES |
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| 36. |
When con .acid is added to water whether the process is exothermic or endothermic??☺ |
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Answer» n highly exothermic PROCESS SINCE this LEADS to DILUTION which is a exothermic process |
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| 37. |
What is Lindlar’s catalyst? What is it used for? |
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Answer» ar catalyst is a HETEROGENEOUS catalyst that consists of PALLADIUM DEPOSITED on calcium carbonate which is then poisoned with various FORMS of LEAD or sulphur. It is used for the hydrogenation of alkynes to alkenes (i.e. without further reduction into alkanes) and is named after its inventor Herbert Lindlar.Please mark me as brainliest... |
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| 38. |
What is derived unit? Derive the unit for density in SI unit? |
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Answer» ts of DERIVED PHYSICAL quantity is derived UNITS. unit for density is kg /m*3 |
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| 39. |
What in the sequence of energies of 3s, 3p and 3d orbitals in: (a) a hydrogen atom (b) a multielectron atom |
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Answer» The energy possessed by electron in the hydrogen ATOM is given by,Here, is Rydberg CONSTANT and n is principal quantum NUMBERSO, energy possessed by electron in the hydrogen atom depends only on the principal quantum number. THUS, the INCREASING order of energies for hydrogen orbitals isSo, orbitals 3s, 3p and 3d have the same energy in a hydrogen atom. |
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| 40. |
What is anoxia or asphyxiation? |
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Answer» sically an absence or deficiency of OXYGEN REACHING the tissues; severe hypoxia. |
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| 41. |
What happens when: (i) calcium is treated with nitrogen. (ii) calcium is treated with dilute sulphuric acid. (iii) calcium is heated in the atmosphere of . (iv) calcium is treated with cold water. |
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Answer» n calcium is treated with nitrogen it forms calcium nitride WHOSE equation is Ca3N2.(2) Calcium reacts with dilute hydrochloric acid to give calcium chloride and hydrogen gas. Calcium hydroxide, Ca(OH)2 or slaked lime or hydrated lime, is a caustic substance produced by heating limestone at high temperature (above 825 °C) (3) It burns in air or pure oxygen to form the oxide and reacts RAPIDLY with WARM water (and more slowly with cold water) to produce hydrogen gas and calcium hydroxide.(4) When calcium is dropped into cold water, it reacts VIGOROUSLY (ALTHOUGH not as vigorously as Na or K) to form milky Calcium Hydroxide and Hydrogen gas, along with release of heat. |
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| 42. |
What happens to ionic product of water if temperature is increased? |
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Answer» your ANSWER PLZ MARK me as BRAINLIEST |
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| 43. |
What does negative electrode potential signify ? |
| Answer» E ELECTRODE POTENTIAL means the metal electode is donating electron to other electrode.hope this might help you | |
| 44. |
What happens when propene is treated with cold ? |
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Answer» nt of alkenes with cold, DILUTE BASIC KMNO4 leads to 1,2-diols (vicinal diols). |
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| 45. |
What is the difference between alloy and intermetallics? |
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| 46. |
The probable ph of a very dilute solution of sodium hydroxide is a) 5 b) 6 c) 7 d) 8 |
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Answer» bable pH of DILUTE solution of SODIUM hydroxide is 8but its actual pH is 12 |
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| 47. |
The number of electrons in a neutralatom is equal to the number of protons. The mass number of the atom(m) is equal to the sum of the number of protons and neutrons in the nucleus. The number of ne |
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Answer» is DEFINED as exactly \(1/12\) of the mass of a carbon-12 atom and is EQUAL to 1.6605 \(\times\) 10−24 g. Protons are relatively HEAVY particles with a CHARGE of 1+ and a mass of1.0073 amu. Neutrons are relatively heavy particles with no charge and a mass of 1.0087 amu |
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| 48. |
in NaHCO3,Na2CO3,CaOCl2,CaSO4.1/2H2O,NaOH which one is the strongest base? it is very important for me please answer please please please |
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Answer» the most STRONGEST |
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| 49. |
Primary,secondary, and tertiary alcholhal.what deference? |
| Answer» ALCOHOL means the OH GROUP is connected to a carbon which In TURN is BONDED to only a SINGLE carbon atom.Secondary alcohol means the OH group is bonded to a carbon which is bonded to TWO other carbon atoms.Tertiary alcohol means the OH group is bonded to a carbon which is in turn bonded to THREE other carbon atoms. | |
| 50. |
What are the limitations of J.J.THOMSON'S model of atom |
| Answer» NG to J.J. Thomson'smodel of an atom, an atom CONSISTS of a positively charged sphere with electrons embedded in it. However, it was later found that the positively charged PARTICLES reside at the centre of the atom called the NUCLEUS, and the electrons revolve AROUND the nucleus | |