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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. |
The molar composition of polluted air is as follow in mole % mole%. 16%. oxygen1680%. nitrogen 143%. carbon dioxide1%. sulphur dioxidewhat is the avg molecular weight of the given polluted air |
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Answer» I HOPE it HELPS you. If it so PLEASE MARK me as BRAINLIEST. |
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| 2. |
कमरे केकारणजाने केकारणका3निम्नलिखित काबाकिटायन स्थायित्व लिखिए।( Ć CO Hg) act (CGHS) ₂ CH® |
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Answer» कौन कहता है कि इंसान खाली हाथ आता है और खाली हाथ जाता है? ऐसा नहीं है इंसान भाग्य लेकर आता है और कर्म ले कर जाता है |
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| 3. |
Fond the Percentage of nitrogen in ammonta |
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Answer» 82%Explanation:Anhydrous AMMONIA the most prevalent and lowest cost form of nitrogen, is 82% nitrogen. Urea has the HIGHEST nitrogen content of all solid FERTILIZERS at 46% N. UAN solutions, such as 28% and 32% liquid nitrogen, are made up of different forms of nitrogen. |
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| 4. |
Name these organic compounds accordings to IUPAC rules |
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Answer» tion:3. CYCLIC ORGANIC COMPOUND1. acyclic organic compounds2. alicyclic organic COMPOUNDS |
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| 5. |
4)a)Write two compounds with different structural formula & molecular formula C3 H8O b)By what name these compounds are known? |
| Answer» C ____ c_____ c___HExplanation:WRITE in SQUARE OKKK | |
| 6. |
In the reaction Br2 + 2NaOH 2NaBr +NaBrO + H2O The n- factor of Br, is |
| Answer» PLEASE GIVE FULL QUESTION???? | |
| 7. |
Q.7.Assertion-H20 is a conjugate base of an acid H3O+ Reason-This concept is Arhenius concept.A) Assertion is correct , Reason is correct and reason is the correct explaination of assertionB) Assertion is correct, Reason is correct and reason is not correct explaination of assertionC) Assertion is correct , Reason is incorrect.D) Assertion is incorrect and Reason is correct. |
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Answer» plz CHECK UR QUESTION something went WRONG with this question |
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| 8. |
How many moles of potassium permagnate are required to oxidize 5 moles of oxalic acid (COOH-COOH) completely into CO2 |
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| 9. |
दो अंसमामित कारबन परमाणु वाले यौगिक दवरा वयकत पराकाशिक समावयवता को समझाइए |
| Answer» TION:Explain the parasitic isomerism compounded by two UNSYMMETRICAL CARBON ATOMS. | |
| 10. |
Q.6Assertion-BC13 is a lewis acid. Reason-As it can donate a lone pair of electrons A) Assertion is correct, Reason is correct and reason is the correct explaination of assertion.B) Assertion is correct, Reason is correct and reason is not correct explaination of assertionC) Assertion is correct , Reason is incorrect.D) Assertion is incorrect and Reason is correct. |
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Answer» C) Assertion is correct but the reason is wrong.Explanation:Correct reason: BCL3 lack a pair of electron, hence it can ACCEPT a pair of electrons from other compounds such as NH3 which are electron pair DONORS. |
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| 11. |
Determine volume strength of 0.45M H,O2 |
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Answer» hope it would be helpful for uExplanation:The balanced reaction is as follows:2H 2 O 2 →2H 2 O+O 2 −1 −2 0 (oxidation state of O)So, 2 moles of H 2 O 2 GIVES 1 MOLE of O 2 .Therefore, 1 mole of H 2 O 2 will give 11.2 L of O 2 gas. So, volume strength of H 2 O 2 =11.2× molarity.Hence, for 1 M H 2 O 2 , volume strength is 11.2. |
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| 12. |
Q.5Assertion-Conjugate base of strong acid is weak. Reason-Cl is the weak base of acid HCI.A) Assertion is correct, Reason is correct and reason is the correct explaination of assertion.B) Assertion is correct, Reason is correct and reason is not correct explaination of assertion.C) Assertion is correct Reason is incorrectD) Assertion is incorrect and Reason is correct. |
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Answer» tyuvgikmpkbxsrtuikncxdyyvjibdtExplanation:ggugg |
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| 13. |
A certain sample of barium chloride is found to contain 3.01x 10^21 po3^4- ions |
| Answer» TION:MARK BRAINLIST follow=followHope it HELPS | |
| 14. |
True or False; The graphite allotrope of carbon is smooth and sticky. |
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Answer» raphite ALLOTROPE of CARBON is SMOOTH and sticky.》False. [✔] |
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| 15. |
Classmate DatePageउपसहयाप्नलकारख्यासेजाप व्यथा समझोउयूसंहसूशाप्नल संख्यान्यामाटेटमा संलो कीये संम्वद्य कोसमझाइए ?ह |
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Answer» fifidydtstmdtstskfjsitsurarus |
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| 16. |
Give two reaction that are characterised by the production of a specific smell |
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Answer» Chemical reaction results in new SUBSTANCES by undergoing certain REACTIONS ... SODIUM hydroxide solution reacts with HYDROCHLORIC acid solutionExplanation: |
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| 17. |
Complete the statements pertaining to Modern periodic Table. After definite intervals of atomic number, recurrence of ______ electronic configuration takes place. Since properties of elements are dependent on __________ and arrangement of electrons including valence electrons, elements having __________ electronic configuration have similar properties. |
| Answer» GOOD MORNING have a NICE DAY and | |
| 18. |
1. The volume of cone is 18480 cubic cm if the height of the cone is 40 cm find the radius of the base |
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Answer» The VOLUME of cone is 18480 CUBIC cmThe height of the cone is 40 cm.Find the radius of the base.Let the radius of the cone be ' R ' cmHeight ( h ) = 40 cmVolume ( v ) = 18480 cm³We know that,Where,v ⭆ Volumer ⭆ The radius of Circular Baseh ⭆ height of coneπ ⭆22/721Therefore,The radius of the base of the cone is 21 cm . |
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| 19. |
1) Which of the given equation is a linear equation in two variables ? (a) 4/x+5/y= 4(b) 4xy - 5y2 - 8 = 0(c) 4m + 3n = 12 (d) v2x - V5y = 16 |
| Answer» OK | |
| 20. |
What is composition of alpha (α) particle? |
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Answer» Alpha PARTICLES ALSO called alpha rays or alpha radiationExplanation:HOPE it HELPS |
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| 21. |
5. Decomposition brought about by heat is known as the decomposition. What is the difference between thedissociation and thermal decomposition.6. (a) Define neutralization reaction with an example.(b) Give a balanced equation for this reaction.(c) Give three applications of neutralization reaction7. What do you understand by precipitation reaction ? Exwith an example.8. (a) What are double displacement reactions ?(b) Give an example of double displacement reawhere a gas is evolved.(a) What is a decomposition reaction ? |
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| 22. |
Hii friends, can u please tell about qualitative analysis |
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Answer» Qualitative ANALYSIS is the determination of non-numerical information about a chemical species, a reaction, etc. EXAMPLES WOULD be OBSERVING that a reaction is creating gas that is bubbling out of solution or observing that a reaction RESULTS in a color change.Explanation:mark as brainliest |
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| 23. |
Determine volume strength of 0.45 H202 |
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Answer» ❤️❤️❤️❤️❤️Explanation:yyghh in the HILSA FISH to the hilsa fish to MAIN skip navigation links of MAHARASHTRA |
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| 24. |
The electronic configuration of three elements A, B and C are as follows A=2,8,18,18,8,1B=2,8,18,18,7C=2,8,18,32,18,8Find the respective period and group to which of these belongs |
| Answer» TION:jddmsw.aoxnmwjd. nsides sm.X x | |
| 25. |
Boiling point of mercury °f , °c 356.7 , K. |
| Answer» PROPERTIES Of MercuryIt has a BOILING POINT of 674°F (356.7°C) and a MELTING point of -38°F (-38.89°C). | |
| 26. |
among the second period elements the actual ionization enthalpies are in the order li b be c explain why Ne has the highest value of first ionisation enthalpy? |
| Answer» NE does not have highest VALUE of ionization ENTHALPY. Highest is of fluorine. | |
| 27. |
Q.4.Cs forms_____A)peroxideB)monoxideC)SuperoxideD)dioxide |
| Answer» PEROXIDE is the ANSWEREXPLANATION:HOPE it HELPS | |
| 28. |
E. Give reasons for need of Hybridisation |
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Answer» Give reasons for NEED of HybridisationHybridization ALLOWS for the most STABLE (and most desirable) structure. When there are hybrid orbitals there are ENOUGH electrons to complete the necessary bonds - regardless of whether there is a suitable number of VALENCE electrons.Explanation:pls mark me as brainliest answer |
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| 29. |
what is one dimensional elastic Collison ? Derive the formula of velocities of bodies after such type of Collison |
| Answer» INDIA is very RICH in bio-species” ARGUE in FAVOUR of this STATEMENT. | |
| 30. |
1. Metals react with acid to produce hydrogen.TrueFalseA metal stored in kerosene oil is sodiumTrueFalse |
| Answer» 1. False2.True | |
| 31. |
Acid+Metal=Salt+_____ |
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Answer» hope its helpExplanation:Reaction of acids with metal:Acids give HYDROGEN gas ALONG with respective salt when they react with a metal. Example: Hydrogen gas and zinc CHLORIDE are formed when HYDROCHLORIC ACID reacts with zinc metal. Hydrogen gas and sodium chloride are formed when hydrochloric acid reacts with sodium metal. |
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| 32. |
A gas X diffuses through a pin hole at a rate 1/4th of the rate of diffusion of hydrogen gas under similarconditions, the gas isO2N2SO2CH4 |
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| 33. |
Flat bottom flask apparatus name |
| Answer» LABORATORY flasks are vessels or containers that fall into the category of laboratory EQUIPMENT KNOWN as glassware. In laboratory and other scientific settings, they are usually referred to simply as flasks. Flasks come in a number of shapes and a wide range of sizes, but a common distinguishing aspect in their shapes is a wider vessel "body" and one (or sometimes more) NARROWER TUBULAR sections at the top called necks which have an opening at the top. Laboratory flask sizes are specified by the volume they can hold, typically in metric units such as milliliters (mL or ml) or liters (L or l). Laboratory flasks have traditionally been made of glass, but can also be made of plastic. | |
| 34. |
(a)The number of mades of neon atom in 36dm of neon gas at atom temperature and pressure. |
| Answer» KYA QUESTION h yaar RUKH me answer deunga thik BHAI | |
| 36. |
Define catalysis and classify them |
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Answer» tion:Catalysts may be classified generally ACCORDING to their physical state, their chemical nature, or the nature of the REACTIONS that they catalyze. Catalysts may be GASES, liquids, or solids. In homogeneous CATALYSIS, the catalyst is molecularly dispersed in the same phase (usually gaseous or liquid) as the reactants |
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| 37. |
If a gas expands isothermally then the number of molecules of the gas decreasesThe kinetic energy of the gas moleculesdecreasesThe kinetic energy of the gas moleculesremains the sameThe number of molecules of the gasincreases |
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Answer» seer the following:11.5.2 Area of CIRCLEAMANGE the separate pieces as shown in Fig 11.36, which is roughly a parallelogram.A FARMER dug a flower bed of radius 7 m at the centre of a field. He needs todiredpurchase fertiliser. If I kg of fertiliser is required for 1 square metre area.how MUCH fertiliser should he purchase?. What will be the cost of polishing a circular table-top of radius 2 m at the rateof 10 per square metre?Can you tell what we need to find in such cases, Area or Perimeter? In suchmakes we need to find the area of the circular region. Let us find the area of a circle, usingnaphpaper.Draw a circle of radius 4 cm on a graph paper (Fig 11.34). Find the area by countinghe number of squares enclosed.As the edges are not straight, we get a rough estimate of the area of circle by this method,71 side There is another way of finding the area of a circle.Draw a circle and shade one half of the circle [Fig 11.350). Now fold the circle intolerosighths and CUT along the folds (Fig 11.35(11)].Fig 11.35Fig 11.34Fig 11.36 |
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| 38. |
Most probable speed is equal to(in value) ,? |
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Answer» most probable = M2RT ; V rms = M3RT V mpO 2 = 322RT 1 ; V MPN 2 = 283RT 2 GIVEN : T 2 =427+273=700K⇒ 322RT 1 = 283RT 2 ⇒ 322T 1 = 283T 2 T 1 = 2816×3T 2 T 1 =1200K |
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| 40. |
The symbols of cation and anion present in Potassium sulphate. |
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Answer» anion-SO42-cation-Mg2+Explanation:HOPE it HELPFUL for you.please FOLLOW. |
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| 41. |
the atomic number of an element is 13.name the element and find out the number of valence electrons in its atom |
| Answer» TION:THEREFORE, the number of valence electrons in an atom of this ELEMENT is 3. Note: The element in question is Aluminium, which is the second member of the BORON family. | |
| 42. |
Select the metal present in Brass :-O Copper and ZincOCopper and tinO Copper and aluminiumOIron and nickel |
| Answer» COPPER and ZINC is the ANSWER | |
| 43. |
_____ compounds do not conduct electricity. |
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Answer» ionic compounds do not CONDUCT ELECTRICITY but if the ionic compounds are in MOLTEN state then the ionic compounds form IONS and therefore these ions are responsible for conduction of electricity.Explanation:mark me as BRAINLIEST |
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| 44. |
An atom of fluorine is written as ^19F9 write down the number of protons number of electrons and electronic configuration of nitrogen molecule |
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Answer» s it have 9 electrons and 19 nucleons(neutrons and PROTONS )As no. Of protons is equal to no. Of electrons in atom .no. Of protons is 9Electronic CONFIGURATION =1s^2 2s^2 2p^5 |
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| 45. |
3. Briefly explain two ways to separate the components of a mixture using the solubility of components. |
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Answer» If one of the COMPONENTS of the mixture is SOLUBLE in water while the other components are insoluble in water, the water-soluble component can be REMOVED from the mixture by DISSOLVING the mixture in water and filtering the mixture through FILTER paper. |
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| 46. |
Rust is a hydrated oxide of ironwhich is :-O GreenO BlackO GreyO Reddish brown |
| Answer» REDDISH BROWN is the CORRECT ANSWER. | |
| 47. |
List any four properties of crystalline and amorphous solids |
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Answer» Explanation:Difference between Crystalline and Amorphous Solid Properties Crystalline solid Amorphous solid Structure The constituent PARTICLES, atoms, ions or molecules are arranged in regular and definite three dimensional patterns. For EXAMPLE, SODIUM chloride, diamond, sugar etc. The constituent particles are arranged in irregular three dimensional patterns. Cutting with a KNIFE Gives clean, sharp cleavage. Unclean cleavage. Compressibility Rigid and incompressible Usually rigid and can not be compressed to any appreciable extent. Melting point They have a sharp and definite melting point. Melting point is not definite. Melt over a range of TEMPERATURES. Heat of fusion Definite Not definite. Physical properties These are anisotropic in that their physical properties are not identical in all directions. These are isotropic, that is their physical properties are identical in all directions. |
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| 48. |
Rust is a hydrated oxide of iron which is :-O GreenO BlackO GreyO Reddish brown |
| Answer» | |
| 49. |
What happens when carbon disulphide is added to a mixture of iron filings and sulphur? |
| Answer» SULPHUR has the property to dissolve in carbon disulphide whereas IRON does not dissolve and retains its individual property. ... In this, Iron and Sulphur particles do not exist SEPARATELY as such they LOSE their individual property. | |
| 50. |
Give three important uses ofnitrogen |
| Answer» SEE the above ATTACHMENT. HOPE it's HELP you. | |