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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. |
(25) Which of the following cations is most stable? A) FH2+ B) OH3+ C) NH4+ D) CH5+ |
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| 2. |
What is meant by a substance? |
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Answer» SNAGS GANGA GA ga ga ggbagbagbabfabfafagnagbagbabtagbatbabtabtatabqbtabtwtbatatatwgwgagstshnsynsnhsgnsgnaysngsnhsnsnhshsgsnhshshshshhnszh hszhh h.shshh gnfbbgndbgbg |
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| 3. |
state two examples each categorised by following along with chemical equation (1)Change of state (2) Evolution of gas (3)Change in temperature (4) formation of precipitate |
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Answer» Answer: STATE two examples each CATEGORISED by following along with chemical EQUATION (1)Change of state (2) Evolution of GAS |
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| 5. |
The first rotational absorption of 12C16O and 13C16O are found to occur at 3.8424 cm-1 and 3.6734 cm-1 respectively. Assuming masses of 16O and 12C as 15.9994 g and 12.000 g respectively, calculate the mass of 13C. |
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| 6. |
Which igneous rock would produce the deepest soil? Why? |
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Answer» GRANITE is the igneous rock which produces the DEEPEST soil , because granite is the crystalline rock and it breaks down SLOWLY. |
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| 8. |
Errors arise due to the individual analyst is responsible for them? |
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Answer» Answer: Personal Error Explanation: ERRORS for which the individual analyst is responsible and are not connected with the METHOD or procedure is called as personal errors e.g. UNABLE to judge color CHANGE. |
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| 9. |
What is common in all the materials ? Mention any 2 |
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Answer» all MINERALS have a SPECIFIC chemical composition. The mineral silver is made up of only silver atoms and diamond is made only of CARBON atoms, but most minerals are made up of chemical compounds. ... If a mineral contains any other elements in its crystal structure, it's not quartz. |
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| 10. |
G2.13जब हाइड्रोजन परमाणुके n = 4 ऊर्जा स्तर से n = 2 ऊर्जा स्तर में इलेक्ट्रॉन जाता है, तो किसतरंग-दैर्घ्य का प्रकाश उत्सर्जित होगा? |
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| 11. |
The density of a gss wasfound tobe 2.92 g l at 27 degree celsiusand 2.0 atm. Calculate the. molarmass of the gas ? |
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Answer» LADYLIBASS/Customer/Care/Number/7407339010//7407289057 |
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| 12. |
Give reasons for the following observation |
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Answer» Because HOT objects spread their PARTICLES very fast as COMPARED to cold objects |
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| 13. |
The similarity between dobereiner's triads and newlands law of octaves in classification of elements |
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Answer» Answer: Both of them arranged elements in INCREASING order of atomic masses. Both had complete SETS for elements Triads and Octaves |
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| 14. |
Sugar, paper, cotton, salt odd man out |
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Answer» answer -: paper is the odd ONE out hope it HELPED you |
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| 15. |
What is the relation between electronegativity and non - metallic characters of elements? |
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Answer» Answer: ELECTRONEGATIVITY is DIRECTLY related to the non – metallic character of ELEMENTS. Electronegativity is inversely related to the metallic properties of elements. Thus the INCREASE in electronegativities across a period is accompanied by an increase in non – metallic properties of elements. |
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| 16. |
How does the study of the mars rocks and mars atmosphere relate tochemistry? |
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Answer» please markest me a BRAINLEST please find the attachment of the day HAPPY to help you with the speed of the day happy to help with you and I am in the INTENDED addressee please INFORM us of any errors please find the door to the intended |
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| 17. |
Which of the following are matter?Chair, Air, Love, Smell, Hate, Almonds, Thought, Cold, Cold-drink, Smell of perfume.NO WRONG ANSWERS. |
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Answer» CHAIR,air,almonds,cold drink Hope this is USEFUL to you.
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| 18. |
The following impart strength to cement? *A. GypsumB. Iron oxideC. LimeD. Silica |
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| 19. |
Why carbon 12 is used as a reference for atomic mass unit |
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Answer» Carbon-12 is of particular importance in its use as the standard from which atomic masses of all nuclides are measured, THUS, its atomic MASS is exactly 12 daltons by definition. Carbon-12 is composed of 6 protons, 6 neutrons, and 6 electrons. Isotope mass: 12 u Parent ISOTOPES: 12N; 12B Names: carbon-12, C-12 Symbol: 12C |
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| 20. |
State the postulates of VSEPR theory |
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Answer» Answer: 1. Shape of ELECTRON DEPENDS on number of valence shell electron pair 2. Electron pair repel each other surrounding the central atom 3. Electron pair occupy POSITIONS where there is minimum repulsion. |
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| 21. |
The following impart strength to cement? A. GypsumB. Iron oxideC. LimeD. Silica |
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| 22. |
How much cao will be produced by decomposition of 5gm caco3 ? |
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Answer» Answer: 2.8g (or 0.05 moles) Molar MASS of Molar mass of CaO = (40 + 16)g/mol = 56g/mol For 1 mole of Number of moles of Therfore 0.05 mol of CaO will be produced whose mass will be |
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| 23. |
Convert alkane to alkyl of Methane |
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Answer» Answer: hello everyone I am Anish Kumar kushwaha is your NAME PLZ SAY please Kumar kushwaha from BIHAR BETTIAH |
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| 24. |
Calculate the no.of moles in 27 gram of Aluminium |
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Answer» Answer: The TOTAL mass of ALUMINIUM has been given which is 270 G. There has been an atomic mass of aluminium given which is 27 g. We got the value of the NUMBER of moles as 10 moles. -Therefore, the number of moles of aluminium that are present in 270 g Aluminium are 10 moles. please mark as brainliest |
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| 25. |
Full form of CNC in chemistery |
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Answer» CNC FULL Form - Computerized Numerical Control. Explanation: MARK ME BRAINLIEST |
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| 26. |
ಕನ್ನಡದ ಹುಡುಗಿಯರು. replay me |
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Answer» jskdkxinckx Explanation: mxohdkdisndjd8iek |
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| 27. |
What is henrys law ??? |
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Answer» Answer: Henry's law is one of the gas LAWS states that: at a constant temperature, the amount of a given gas that dissolves in a given type and volume of liquid is DIRECTLY PROPORTIONAL to the partial pressure of that gas in equilibrium with that liquid. Explanation: here is your answer if you like my answer PLEASE follow |
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| 28. |
A solution made of 30 grams of solute dissolved in 50 grams of solvent. The solution becomes saturatedwhen 10 grams of solute is added to it. What will be the solubility of the solution at that temperature? |
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Answer» From the following OBSERVATION, it is clear that 30 G of solute is the maximum amount that can be dissolved in 50 g of solvent. So, this is it's solubility only. Further adding of solute will result in it's precipitation and it'll settle at the bottom. So, the next 10 g of solute that is further dissolved will be precipitated. Conclusion: 30 g of Solute in 50 g of Solvent is it's Solubility. I hope this helps. |
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| 29. |
Is this equation balanced?if it is not please balance it KNO3+H2SO4=HNO3+KHSO4 |
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Answer» Answer: How to Balance: KNO3 + H2SO4 → KHSO4 + HNO3 Word equation: Potassium nitrate + Sulfuric acid → Potassium hydrogen sulfate + Nitric acid Type of CHEMICAL Reaction: For this reaction we have a double REPLACEMENT reaction. Balancing Strategies: This equation represents ONE way to MAKE nitric acid by using Potassium nitrate and Sulfuric acid. It is easiest to consider the polyatomic ions (NO3 and SO4) to be one item when balancing this equation. |
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| 30. |
Is this reaction already balanced?if it is not pls balance it 2H2O2=2H2O+O2 |
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| 31. |
What are the different types ofChemical reaction and give twoexamples of each of the reaction |
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Answer» Explanation: The 5 primary types of chemical reactions are: Combination reaction. DECOMPOSITION reaction. ... Combination Reaction. A reaction in which two or more REACTANTS COMBINE to FORM a single product is known as a combination reaction. ... Decomposition Reaction. ... Displacement Reaction. ... Double Displacement Reaction. ... Precipitation Reaction. |
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| 32. |
Which form of molecule is thermodynamically more stable ??Enolic formKeto formCanonical form All of these |
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Answer» Answer: ENOLIC form Explanation: Enolic form can form intra-molecular H bonding that GIVES it more stability than CORRESPONDING KETO GROUP. |
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| 33. |
Write the general formula o following organic class ?carboxylic acid amideketones ether |
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Answer» The general formula for the carboxylic acids is C NH 2n+1COOH (where n is the number of carbon ATOMS in the molecule, minus 1). In chemistry, a ketone /ˈkiːtoʊn/ is a functional group with the structure R2C=O, where R can be a variety of carbon-containing substituents. Ketones contain a CARBONYL group (a carbon-oxygen DOUBLE bond). The simplest ketone is acetone (R = R' = methyl), with the formula CH3C(O)CH3 |
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| 34. |
4(c) How does carbine formation occur in the organic reaction? Illustratewith an example |
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Answer» Answer: Here you go :) Explanation: Ozone, the triple oxygen molecule that acts as a protective stratospheric blanket against ultraviolet rays, is CREATED in NATURE by lightning. When it strikes, the lightning cracks oxygen molecules in the ATMOSPHERE into radicals which reform into ozone. The smell of ozone is very SHARP, OFTEN described as similar to that of chlorine. This is why you get that “clean” smell sensation after a thunderstorm. |
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| 35. |
How to write electronic confrigetion |
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Answer» The symbols used for writing the electron CONFIGURATION start with the shell NUMBER (n) followed by the type of orbital and FINALLY the superscript indicates how many electrons are in the orbital. For example: LOOKING at the PERIODIC table, you can see that Oxygen has 8 electrons. |
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| 36. |
which of the following is aromatic hydrocarbon? (a) isobutane (b) butane (c) phenol (d) Acetaldehyde |
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Answer» hey here is your answer Explanation: out of above 4 options isobutane is an aromatic compound because aromatic compounds are compounds which are represented in cyclic chain |
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| 37. |
Examples of residue chemistry |
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Answer» Answer: In chemistry residue is WHATEVER remains or acts as a contaminant after a GIVEN class of events. Explanation: examples- 1) PESTICIDES sprayed on crops. 2) Fertilizers and soil conditioners. 3) Veterinary pharmaceuticals administered to food-producing SPECIES |
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| 38. |
The percentage by mass of nitrogen in trioxonitrate (V) acid is approximately |
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Answer» why so SERIOUS..!!..!!..!!..!!..!!..!! |
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| 39. |
Write three name of acid rain |
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Answer» Answer: Acid deposition-usually REFERRED to simply as acid rain-actually includes TWO forms of POLLUTION, wet and dry. |
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| 40. |
Lubrication is necessary to protect wear tear caused due to |
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Answer» Lubrication is necessary to PROTECT wear and tear caused DUE to frictional force. |
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| 41. |
Glass vessel material items |
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Answer» Popular Cylindrical Glass VESSEL Products. Garg Cylindrical Glass VESSELS ... MATERIAL: Borosilicate Glass. Shape: Cylindrical. Usage/Application: .. |
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| 42. |
Thousands of amino acids polymerize to form mcqs |
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Answer» why so SERIOUS..!!..!!..!!..!!..!! |
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| 44. |
What is thermal energy? |
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Answer» Answer: Thermal ENERGY refers to several DISTINCT physical concepts, such as the INTERNAL energy of a system; heat or SENSIBLE heat, which are defined as types of energy transfer; or for the characteristic energy of a degree of freedom in a thermal system kT, where T is temperature and k is the BOLTZMANN constant. |
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| 45. |
1 1 5Q.1) Answer the following question (any 5)1 Name the two acid present in air?22. Mention one use of chromatography,3. Draw the staggered conformation of ethane,4. What is Lindlar catalyst?5. What is Inductive effect?Q.II] Answer the following question (any 5)1 2x6. Explain wurtz reaction with example?7. How is sodium fusion extract prepared.(lassaigne's test)8. Explain Markownikov's rule.with example,9. How will you prepare benzene from phenol.210: Write the IUPAC names of the following hydrocarbonsOHCH,CH,CHCHOCOOHi)IACOBCH,ii)11. Give two tests to distinguish between Alkanes and Alkenes.Yow is 'Ozone layer' formed in the stratosphere? Name a chief chemichemical that causes it's depletioncoh |
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Answer» jvhcikvicocuxififkvlvlblblb |
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| 46. |
Comment upon the following rigidity, compressibility, fluidity, filling a gascontainer, shape, kinetic energy and density |
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Answer» Answer: Density is a measure of MASS per volume. The average density of an object EQUALS its total mass divided by its total volume. An object made from a COMPARATIVELY dense material (such as IRON) will have less volume than an object of equal mass made from some less dense substance (such as water). |
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| 47. |
Which of the following titrations will have the equivalence point at a pH more than 8? |
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Answer» ★Aɴsᴡᴇʀ★ Acetic acid is a weak acid and sodium hydroxide is strong base. Salts of the two will hydrolyse to GIVE basic SOLUTION. So, at neutral POINT, PH of the solution will be greater than 8. Tʜᴀɴᴋ Yᴏᴜ~♡ |
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| 48. |
The prefix 10^18is The prefix 10 raise to 18 is plz answer correctly |
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Answer» Answer: |
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| 49. |
The prefix 10^18isThe prefix 10 raise to 18 is plz answer correctly |
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Answer» <P>EXPLANATION: atto attoPrefix SYMBOL Meaning attoPrefix Symbol Meaningnano N 10-9 attoPrefix Symbol Meaningnano n 10-9pico p 10-12 attoPrefix Symbol Meaningnano n 10-9pico p 10-12femto F 10-15 attoPrefix Symbol Meaningnano n 10-9pico p 10-12femto f 10-15atto a 10-18 |
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| 50. |
Use the metal reactivity series to write 5 new examples of displacement reactions |
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Answer» Answer: zinc DISPLACING iron ions from iron(II) sulfate SOLUTION. nickel displacing copper from copper(II) NITRATE solution. copper displacing silver from silver(I) nitrate solution. Explanation: plz DROP some thanks for me and mark me as BRAINLIEST |
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