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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. |
Write the formula of Calcium and Sulphate ions. Also write the formula of the compound between them |
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Answer» ONG>Answer: Calcium Ca2+ Sulphate SO42- Explanation: This two reacts to GIVE Calcium sulphate Equation Ca2+ + SO42- → CASO4 |
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| 2. |
4.4 kg of carbon dioxide gas, CO2, undergo isothermal expansion at 298 K from a volume of 2to 5 m3in three steps of 1 m3.Assumingideal gas behavior, what is the total work performed by the gas? |
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Answer» ONG>ANSWER: Here❤ 4.4 kg of carbon dioxide GAS, CO2, undergo isothermal expansion at 298 K from a volume of 2 to 5 m^3 in three steps of 1 m^3. |
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| 3. |
2.the volume of carbondioxide at NTP evolved by strong heating of 20 g of calcium carbonate is CaCO —>CaO + CO,11a) 4.0 ltsb) 4.48 ltsc) 2.24 ltsd) 8.0 lts |
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Answer» LLY REALLY SORRY I don’t KNOW the ANSWR |
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| 4. |
A 5.692 g of a triprotic acid reacts with 25ml of 0.85OMbadium hyddoxide solution toequivalence point whatis the molecular weight ofthe acid |
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Answer» ONG>ANSWER: Explanation: |
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| 5. |
Lead monoxide is known as red lead. true or false |
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Answer» ONG>Explanation: What should you be called study well |
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| 6. |
Differenciate between atom and molecure21 |
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Answer» ong>ANSWER: ATOMS are single neutral particles. MOLECULES are neutral particles made of TWO or more atoms bonded together. |
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| 7. |
Two isotopes of Uranium have 92 electrons each and have 144, 148 neutrons respectively. Mass numbers of these two isotopes will be respectively |
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Answer» ong>Answer: 236 and 240 are the correct answer wish you will drop some thanks and MARK it brainlist |
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| 8. |
Fill in the blank The kinetic energy of a particle dash on cooling. |
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Answer» ong>EXPLANATION: |
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| 9. |
______ ( elements / molecule ) is a pure substance that consists of only one kind of atoms . |
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Answer» ong>ANSWER: Your answer is here:- Explanation: Element Element is a pure SUBSTANCE that CONSISTS of only one kind of ATOM. Hope it HELPS you. |
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| 10. |
Varnishes are generally used for coating a |
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Answer» ong>Answer: Most VARNISHES are a BLEND of resin, drying oil, drier, and volatile solvent. When varnish dries, its solvent portion evaporates, and the remaining constituents oxidize or polymerize to FORM a durable transparent FILM. Varnishes provide protective coatings for wooden surfaces, paintings, and various decorative objects. |
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| 11. |
Temperature at which solid Pb, 1 solid Ag & their solution coexistin the system is -----OC *O 300O 306O 311O 303 |
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Answer» ong>Answer: Temperature at which SOLID PB, 1 solid Ag & their solution coexist in the system is -----OC * O 300 O 306 O 311 O 303✔️ |
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| 12. |
Predict the expected product of substitution reactions aniline+NaNO2/hcl |
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| 13. |
What is ment by molar volume of a gas |
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Answer» molar volume means how much volume in PER MOLAL for eg 10 molar so the ans is the ans is 10/1 |
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| 14. |
Do this with clear process |
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Answer» I don't KNOW what is the ANSWER sorry will help you next time |
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| 15. |
H2C =CH-CH20Hwhich tupe of alcohol1.primary2. Secondary3.Tertiary |
| Answer» SECONDARY ALCOHOL................ | |
| 16. |
Please tell me (Use the illustration given below to write a note on the pressure exerted by a liquid |
| Answer» TION:The pressure at the bottom of the container is due to the pressure of the atmosphere (p0) plus the pressure due to the weight of the fluid. The pressure due to the fluid is equal to the weight of the fluid divided by the AREA....hope it WOULD be helpful ...PLZZ MARK as brainliest if u think its worth | |
| 17. |
Does the path of light bend when its source is in linear motion in space? |
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Answer» If it's SOURCE is n linear motion Then it is possible, the path of LIGHT can BEND This will be more clear to U by the lax of general relativity given by EINSTEIN Please mark me as a brainliest Thnku |
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| 18. |
Calculate the mass of glucose required to prepare 300g of 30percent solution of glucose |
| Answer» 90 is RIGHT ANSWER of these | |
| 19. |
What is the SI unit of amountofa substance |
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| 20. |
Please answer it's urgent. |
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Answer» In FIRST case ICE MELTS to form water and in SECOND case water freezes to form ice. |
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| 21. |
How many particles are present in1 mole of substance |
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Answer» 6.023×10*23 PARTICLES are PRESENT in 1 MOLE of any substance |
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| 22. |
Find number of electrons,if the mass of aluminium is given 3*10^7 |
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Answer» Explanation:GIVEN: mass of Al =3 x 10^7 APPLY: n mole= given mass MOLAR mass =26g molar massafter we obtain n moles APPLY: n ELECTRONS = moles x AVAGADRO's NUMBER x n electrons of aluminium |
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| 24. |
Caculate mass of 5mole Co2 |
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Answer» c=120=16co2=12+32=445 MOLE co2=44*5=220 |
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| 25. |
How are pure crystal of a substance obtained from sample containing impurities |
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Answer» by the PROCESS CALLED CRYSTALLISATION |
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| 26. |
The threshold frequency of a metal is 5×10^14/s what will be the kinetic energy of a photoelectron emitted when radiation of frequency v=1/5×10^15/s strikes on a metal surface |
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Answer» tion:by using thw concept of PE EFFECT hv=hv° +KE , v and v° are the frequency and threshold frequency RESPECTIVELY |
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| 29. |
Why compound is regarded as a pure substance while the mixture is not? PLEASE ANSWER FAST!!!!!!!!! FIRST TO ANSWER WILL GET MARKED AS BRAINLIEST(ONLY IF IT IS CORRECT) |
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Answer» tion:because mixture has been MIXED with different COMPOUNDS whereas compound is combined of ELEMENTS they can be separated only by chemical process but mixture can be separated by PHYSICAL process like filtration,cheomatography ETC. |
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| 30. |
For the reaction 2A+3B reversibly gives 4c at 27°c the value of kp=2 find kc |
| Answer» KNOW.. SORRY | |
| 31. |
Definiation of racemic mixture and enantiomers. |
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Answer» In chemistry, a racemic MIXTURE, or RACEMATE, is one that has equal amounts of left- and right-handed enantiomers of a chiral molecule. The first known racemic mixture was racemic acid, which Louis Pasteur found to be a mixture of the two ENANTIOMERIC ISOMERS of tartaric acid. |
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| 33. |
How manygrams does an atom of hydrogen weight |
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Answer» hydrogen ATOM has only 1g WEIGHT please mark it as brainliest |
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| 34. |
Define Le-chatelier's principle? |
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Answer» elier's PRINCIPLE- This principle explains that whenever a system is in equilibrium and then if it's concentration, pressure and even if it's TEMPERATURE is changed then also its equilibrium shifts to nullify it's effect of change.Possible CasesChange in Concentration- If we will increase the concentration of the reactants then its equilibrium favours of the products and vice-versa.Change in Pressure- It is inversely proportional to volume means if we will decrease the pressure then volume will increase and vice-versa. Change in Temperature- Reaction will OCCUR in the DIRECTION of HEAT used if we increase the temperature of the equilibrium. It means increase in the temperature will support the reaction for endothermic reactions. |
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| 35. |
What is Dean Ambrose also known as |
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Answer» Explanation:dean ambrose NICKNAMES street dogmr. money in the BANKTHE lunatic fringethe kingpin of the WWE the IRONMAN of the wwethe dudemark as brainest |
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| 36. |
Name or state the following with reference of elements of the first three periods of periodic table.Alkaline earth metal in period 3 |
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| 37. |
Liquid generally have lower density as compared to solids. But you must have observed that ice float on water. Find out why? |
| Answer» EXPLANATION:Because of Hydrogen BONDING it arranges in tetrahederal shape and TRAPS air in it resulting in LOW density | |
| 38. |
Structure of cyclohexylamine |
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Answer» Explanation:Cyclohexylamine is used as an intermediate in SYNTHESIS of other organic compounds. It is the precursor to sulfenamide-based REAGENTS used as accelerators for vulcanization. It is a building BLOCK for PHARMACEUTICALS (e.g., mucolytics, analgesics, and bronchodilators).mark as brainest |
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| 39. |
When an acid contain one replaceable hydrogen is called |
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Answer» monobasic acidExplanation:the ACID which CONTAINS ONE replacble H+ ions CALLED monobasic acid |
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| 40. |
Why do most of the compound involve xenon ,fluorine and oxygen? |
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Answer» Most of the compounds involve Xenon, fluorine and OXYGEN because they help in completing the OCTET of ANOTHER atom an MAKE the compound stable. |
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| 41. |
White phosphorus more reactive than red phosphorus |
| Answer» YES, white PHOSPHORUS is more REACTIVE than RED phosphorus because of its structure. | |
| 42. |
How to find out primary alcohol |
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Answer» The primary ALCOHOL is Butan-1-ol.Explaination:-Hey there,If you want to figure out that which ONE is primary alcohol then look at the functional group (Here it is alcohol -OH). CHECK it out to which carbon it is connected to.-If it is connected to the carbon which is 1° (Linear) then it MEANS its primary.-If it is connected to the carbon which is 2°(means functional group is connected to the carbon which is connected from two other sides of carbon chain) then it means its secondary.-If it is connected to the carbon which is 3°(means functional group is connected to the carbon which is connected from THREE other sides of carbon chain) then its tertiary.Thank You-Soul |
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| 43. |
24) Calculate the number of atoms of hydrogen present in 5.6 g of urea, (NHCO. Also calculate the number of atoms of N, C and o. |
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Answer» Na= 6.022×10^2343gm.......….. Na ATOMS 5.6 GM........Na×5.6/43 atoms of HExplanation:for N,C,O ALSO same H.= Na×5.6/43 atoms |
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| 44. |
Explain the molar mass |
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Answer» Here is your answerIn CHEMISTRY, the molar mass of a chemical compound is DEFINED as the mass of a sample of that compound DIVIDED by the amount of substance in that sample, measured in moles. The molar mass is a bulk, not MOLECULAR, property of a substance. |
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| 45. |
Assertion : A particle present at the corner of the face centred unit cell has 1/8th of its contribution of the unit cell.Reason: In any space lattice, the corner of the unit cell is always shared by the eight unit(1) A(2) B(3) C(4) Dcells. |
| Answer» OPTION AEXPLANATION: | |
| 46. |
Most probable velocity of a Neutron at 20 degree celsius is nearby |
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Answer» The most probable velocity of a neutron is 2197 m/s.Explanation:To CALCULATE the most probable velocity of a particle, we USE the equation:where, = most probable velocity of neutronk = Boltzmann constant = T = temperature = m = mass of neutron = Putting VALUES in above equation, we GET:Hence, the most probable velocity of a neutron is 2197 m/s. |
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| 47. |
Calculate the mass of sulfur dioxide produced by burning 16 g oi sulfur in excess of oxygen in contact process. (Average atomic mass: S = 32 u, 0 = 16 u) |
| Answer» 32 GRAMS of SULPHUR DIOXIDE is PRODUCED | |
| 48. |
Give formula of photoelectric effect |
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Answer» The photoelectric EQUATION involves; h = the PLANK CONSTANT 6.63 x 10-34 J s. f = the frequency of the incident light in hertz (Hz) ... Ek = the maximum kinetic ENERGY of the emitted electrons in joules (J) |
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| 49. |
a gas in an open container is heated from 27c to 127c. the fraction of the original amount of gas remaining in the container Wii be |
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| 50. |
2.3 x 10 mL + 4.22 x 10' mL + 9.04 x 10 mL + 8.71 x 10 mL; |
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