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. |
Active mass of 5g CaO : |
| Answer» EXPLANATION:Active mass of a solid substance is supposed to be 1. Hence, active mass of 5 gram CAO is 1.please MARK it as brainliest | |
| 2. |
Consider the Relich-Kwong equation of state P = \frac{RT}{v-b} - \frac{a}{v(v+b)\sqrt{T}}P=v−bRT−v(v+b)Ta For methane, a = 32.19a=32.19 bar(m^33/(kg\cdot⋅mol))^22 K^{0.5}0.5 and b = 0.02969b=0.02969 m^33/(kg\cdot⋅mol).Find the specific volume at the critical point predicted by this equation in m^33/kmol. |
| Answer» PLEASE GOOGLE it outjsve | |
| 3. |
Ammonium chloride +sodium hydroxide-___ |
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Answer» m CHLORIDE + SODIUM HYDROXIDE → AMMONIUM hydroxide + Sodium ChlorideHope it HELPS :) |
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| 4. |
Why Oxygen is diatomic? |
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Answer» Oxygen is DIATOMIC due to strong TENDENCY to form multiple bonds.Also (O2)FORMS pπ-pπ BOND which is stronger. |
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| 5. |
Potassium hydroxide+nitric acid_____ |
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Answer» KOH + HNO3 → KNO3 + H2O.POTASSIUM HYDROXIDE REACT with nitric acid to produce potassium NITRATE and water. Nitric acid - diluted solution.Explanation:please mark as branlist |
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| 6. |
Ingestion. Food pipe Ruminants. Small intestine Chewing of cud. Anus Absorption. Intake of Food Oesophagus. Egestion |
| Answer» DIFFERENT TYPES of NUTRITION in animalsExplanation: | |
| 7. |
What is the molecular geometry for the molecule IF5 seesaw square pyramidal tetrahedral octahedral |
| Answer» STRUCTURE of IF5 predicted from VSEPR. IF5 contains FIVE bonded and one nonbonded electron domains, giving an OCTAHEDRAL e- domain geometry and a SQUARE pyramidal molecular geometry.Explanation:please MARK as branlist | |
| 8. |
The radius of nucleus of 27 13 Al will be :- 1] 1.2 x 10 ^ -15 m2] 2.7 x 10 ^ - 15 m3} 10. 8 x 10 ^-15 m4] 4 x 10 ^-15 mplease try to write elaborated solution cause i am already confused with the shortcut solution of it .thank you |
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Answer» snsnzbdnsnsnsnennsjsjsshbzjsjdjdd |
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| 9. |
Q. Among the following energy of 2s is lowest in: 1)K 2)H 3)Li 4)Na |
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Answer» K( POTASSIUM) Increase of attraction decreases the energy of the ORBITAL and the electron present in it. Energies of the ORBITALS in the same subshell DECREASE with increase in the atomic number. Hence, 2s orbital (energy level) of potassium will have minimum energy than others.Explanation:please mark as BRANLIST |
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| 10. |
What is the element having atomic number 104? |
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Answer» Rutherfordium is a synthetic CHEMICAL element with the symbol Rf and atomic number 104, NAMED after NEW Zealand PHYSICIST Ernest Rutherford. |
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| 11. |
Why energy of orbitals decrease with increase in atomic number and Z effective? |
| Answer» ENERGIES DEPEND upon the distance of the ORBITAL from the NUCLEUS and also the no. ... increases the atomic RADIUS increases leading to increase in the distance from the nucleus and thus decrease in energy. Also the inter-electronic repulsion between electrons of the same orbital becomes prominent. | |
| 12. |
Who many moles present in naoh are present in 160 of it |
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Answer» 4 molesAnswer = 160 g of SODIUM HYDROXIDE. 160 g of Sodium hydroxide = 1 mol × 160 / 40 = 4 mol. HENCE " 4 moles contained in 160 g of sodium hydroxide.please mark as branlist |
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| 13. |
Why is potassium the most reactive metal in the activity series? |
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Answer» The ALKALI metals, GROUP 1A, are the most reactive metals because they have ONE valence or outer electron. They lose this electron very easily, forming ions with a CHARGE of +1. ... This same strong reactivity because of one valence electron is true of potassium, as well. if u like this answer the follow me... |
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| 14. |
Give IUPAC name of CH2=CH-C triple bond N |
| Answer» EXPLANATION:PLS FIND THE ATTACHMENT THANKS | |
| 15. |
The percentage of coordinate covalent bond present in BF-4 and NH-4 |
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Answer» What type of covalent bond is present in NH4+? Illustrate how NH4+ formed?Are you looking for a BETTER way to STOCK up on SALON supplies?When the AMMONIUM ion, NH4+, is formed, the fourth hydrogen is attached by a dative covalent bond, because only the hydrogen's nucleus is transferred from the chlorine to the nitrogen. The hydrogen's electron is left behind on the chlorine to form a negative CHLORIDE ion.Once the ammonium ion has been formed it is impossible to tell any difference between the dative covalent and the ordinary covalent bonds. Although the electrons are shown differently in the diagram, there is no difference between them in reality.Representing co-ordinate bondsIn simple diagrams, a co-ordinate bond is shown by an arrow. The arrow points from the atom donating the lone pair to the atom accepting it. |
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| 16. |
Which subatomic particle can change the molecular geometry of a molecule neutrons quarks electrons protons |
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Answer» electron Explanation:According to the Valence Shell Electron Pair Repulsion Theory (VSEPR), the geometry of a molecule depends on the number of electron pairs (REGIONS of electron density) on the central atom of the molecule. Electron pairs on the valence shell of the molecule tend to position themselves as far apart in space as POSSIBLE to minimize repulsion between them. HENCE, the orientation of these electron pairs is the ultimate determinant of the observed geometry of a molecule.Lone pairs of electrons CAUSE more repulsion than bond pairs of electrons on the central atom of a molecule. Hence when the central atom of a molecule contains lone pairs of electrons, the molecular geometry is usually distorted from the expected geometry on the basis of VSEPR theory.Hence, electrons are the SUBATOMIC particles which are responsible for any change in the observed molecular geometry of a molecule. |
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| 17. |
What are polyatomic ions ? |
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Answer» Polyatomic ion DEFINITION: A polyatomic ion is an ion composed of two or more atoms.Examples: The HYDROXIDE CATION (OH-) and the PHOSPHATE cation (PO43-) are both polyatomic ions.Explanation:₱ⱡɇ₳₴ɇ ₥₳ɽ₭ ₳₴ ฿ɽ₳ł₦ⱡł₴₮#₱ł₭₳₵ⱨʉʉ...₥ɽ.. |
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| 18. |
Energy released on neutralization reaction which occurs between strong acid and strong base is |
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Answer» tion:we all now that in NEUTRALIZATION reaction it is NEUTRAL means 0 HOPE it will HELP you |
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| 19. |
The mole fraction of ethyl alcohol in a solution containing 46 g of ethyl alcohol in 180 g of water is |
| Answer» TION:find NUMBER of moles. then mole fraction | |
| 20. |
A substance is a from of matter that has a composition: 1) Definite 2) Uniform 3) Nonuniform 4) Mixed |
| Answer» MIXED .... ...... ....FOLLOW me GUYS | |
| 21. |
Which compound has atoms sharing 2 electrons CCI4 N2 CO2 Br2 |
| Answer» O2 This is because each oxygen atom SHARES 2 ELECTRONS with carbon. The STRUCTURE is O=C=O , where = represents double BOND meaning 2 electrons shared. | |
| 22. |
Henry law constant of N, in water is 104 atm. Find the molality (Approx) of N, in water when pressureof N2 over water surface is 5 atm (considertemperature remains constant) |
| Answer» BAND TUC hgfhhfjjvfgkhdfghbcfjjgdgjbcfbgffjhjgkhffhhbvbbhhhhjhhhhhhhjhhhhh | |
| 23. |
Explain with example what is meant by a mole of a substance |
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Answer» mole of a substance MEANS the mole present in the atoms of the elementExplanation:one mole is define as the the no of carbon isotopes are present one/12 gm of carbon C atoms HOPE it MAY be RIGHT |
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| 24. |
Calculate the energy released in the nuclear reaction Li + p → 2a givenmass of Li atom and of helium atom tobe 7.016 u and 4.0026 u respectively. |
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Answer» 12thPhysicsNucleiNuclear FORCE and Binding EnergyFind the binding energy per...PHYSICSFind the binding energy per nucleon for lithium nucleus 3 LI 7 .Take mass of 3 Li 7 =7u, mass of proton =1.007825u and mass of neutron =1.008665u.Take 1u=931.5MeV.December 26, 2019avatarEdu ShejaleShareSaveANSWERBinding energy per nucleon. E= A△E = A△m∗931 △m=(3M p +4M n )− Mass of 3 Li 7 Where, M p is the mass of the protonM n is the mass of the neutron△m= (3 X 1.007825+4 X 1.008898)−7=0.059067△E=0.059067 X 931=54.991377E= A△E = 754.991377 =7.736MeVExplanation:please mark me as branliest |
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| 25. |
3. An aqueous solution of Cocl2, on addition of excess of concentrated HCI turns blue due toformation of(1) [Co(H20)4CL2](2) [Co(H20)2C14]2-(3) [COCI4]2-(4) [Co(H2O)2CI] |
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| 26. |
How many g-equivalents of sulphuric acid contains as many as electrons present in 18g of water. |
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Answer» tion:dilute H2SO4 will be (a) 65.0 G (B) 0.65 g (c) 6.35 g (d) 0.065 g RATIO atoms of of C the p ... 60.2 3 1023 (d) 1.02 3 1023 When 18 g of glucose is dissolved in 180 g of water .. |
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| 27. |
Give the formula for a compound found in unpolluted air |
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Answer» osphere ALSO contains a small but important amount of carbon dioxide, APPROXIMATELY 0.04 per cent, and tiny AMOUNTS of a few other gases. In addition to these gases, the AIR also contains WATER vapour.hope its help you mate |
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| 28. |
Which type of reaction is this |
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Answer» ?.?.....??????????? |
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| 29. |
Write the edge length & Axial angle of orthorhombic & monoclinic. |
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Answer» The relation a = b = c and α = β = γ HOLDS for cubic and rhombohedral systems.Cubic a = b = c α = β = γ = 90o Rhombohedral a = b = c α = β = γ≠ 90o.Explanation:In geometry and crystallography, a BRAVAIS lattice, named after Auguste Bravais (1850),[1] is an infinite array of discrete points generated by a set of discrete translation operations described in three dimensional space by:{\displaystyle \mathbf {R} =n_{1}\mathbf {a} _{1}+n_{2}\mathbf {a} _{2}+n_{3}\mathbf {a} _{3}}where ni are any integers and ai are primitive vectors which lie in different directions (not necessarily MUTUALLY perpendicular) and span the lattice. This discrete set of vectors must be closed under vector ADDITION and SUBTRACTION. For any choice of position vector R, the lattice looks exactly the same.Hope it will help youmark me as brainiest |
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| 30. |
Why primary batteries or cells are not chargeable |
| Answer» BATTERIES are not chargeble i.e they are USE and THROW batteries | |
| 31. |
Answer the above question with steps |
| Answer» ACETALDEHYDE is the ANSWER. | |
| 32. |
What difference can you infer between atoms of different elements |
| Answer» SIZE shape Chemical weight and MEASURE EXPLANATION: it is Branilest | |
| 33. |
Why dry cell does not have an indefinite life |
| Answer» DRY CELLS do not have an indefinite LIFE. This is because; NH4Cl paste is ACIDIC in nature, and it continues to corrode the zinc container even when not in use.Explanation:PLEASE mark as branlist | |
| 34. |
What is meant by unified atomic mass |
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Answer» fied atomic MASS or Dalton is the UNIT of mass that QUANTIFIES mass on a atomic or molecular state.It is defined as 1/12 of the mass of an unbound neutral ATOM of carbon-12 in its NUCLEAR and electronic ground state and at rest. |
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| 35. |
Plz solve this uregently I am stucked in the C and D options |
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Answer» your ANSWER is D |
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| 36. |
Wood ,iodine ,kcl graphite belongs to which either crystalline solid or amorphous solid |
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Answer» Iodine , kcl , graphite belongs to CRYSTALLINE solid while wood, PLASTIC, rubber belongs to AMORPHOUS solid |
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| 37. |
If kcl crystallizes in fcc lattice then number of unit cells in its 0.2mol is |
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Answer» Explanation:no. of ATOMS in KCl =mole × NA( avogadro's no) = 0.2 × 6.022 × 10^ 23 =1.20 × 10^23now FCC LATTICE contains 4 atoms per UNIT cellso for 1.20 × 10^ 23 it will be = 1.20 × 10^23/4 = 3.01 × 10^22I HOPE THIS IS HELPFULTHANKS |
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| 38. |
Structure of 2,3- dicloro propanol |
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Answer» H2ClC-CHCl-CH2-OH THANK You |
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| 39. |
What is the empirical formula of graphite? |
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Answer» Graphite is made up of only carbon atoms. Therefore, the chemical FORMULA/emperical formula of graphite is "C". |
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| 40. |
What are the diffrence b/w sulphurus and sulphuric acid |
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Answer» The KEY DIFFERENCE between sulfurus and sulphuric ACID is that they have different OXIDATION number of sulfurus and sulphuric is COMPARATIVELY more acidic than sulfurus. |
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| 42. |
What is the iupac name of simplest ketone and its molecular formula |
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Answer» propanone is the IUPAC NAME of SIMPLEST ketoneExplanation:C3H6O is the MOLECULAR formula |
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| 43. |
C6h6 দবভূত c6h6cooh এর আনব ভর ২৪৪. vanhoft factor koto?? |
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| 44. |
Last question please answer |
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Answer» When we RETURNED down the valley of the Ganges, we FIRST came to the capital of India -DELHI. HOPE IT HELPS YOUPLZ DO MARK ME AS THE BRAINLIEST I REALLY NEED IT |
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| 45. |
Is killing of silkworm of production of silk clothes are ethical: comment in 100-200 words |
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Answer» Silk PRODUCTION GOES on today in much the same way it did centuries AGO. But there is a dark side. This process does POSE an ethical dilemma to the growing NUMBER of people concerned with the humane treatment of animals, especially those exploited for monetary reasons. Even if those animals happen to be insects: |
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| 46. |
Anelementhasanatomicnumberof15withwhichofthefollowingelementswill itshowsimilarchemicalproperties |
| Answer» 1S2 2S2 2P6 3s2 3P3 ....15 electron completeExplanation:3p3 so with 3rd A GROUP same chemical properties with NITROGEN.. grp 15 | |
| 47. |
The element in group 17 that is neither a liquid nor a gas |
| Answer» TION:stisgditdyow7eigd8e8s8tw7sif | |
| 48. |
Write M.P and B.P orders of hydrides of group 16 elements? |
| Answer» TION:The p-Block Elements. Arrange thehydrides of GROUP 16 in ORDER of increasing BOILING point. As move down the group the molecular size increase, and also the surface area increases and the force i.e. vander waal FORCES increase. Hence increase the boiling point down thegroup.please Mark me as a brainlist answer | |
| 49. |
Calculate the cell potential for the cell. Mg (S) Ingco.imllcu (1* 163M) I Curs)Given Elculcu) 0.3uv ,E (Mg +2 / M) = -2.37v |
| Answer» IMPROPER QUESTION ....... | |