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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. |
Calculate the amount of water (g) produced by the combustion of 16g of methane |
| Answer» 20 gm water is produced | |
| 2. |
Alkali metals in each period have? |
| Answer» | |
| 3. |
Why silicon dioxide is solid and carbon dioxide is gas at room temperature |
| Answer» | |
| 4. |
What is the importance of borax beat test and borax?explain by giving chemical reaction |
| Answer» | |
| 5. |
What is the principal of paper chromatography? |
| Answer» | |
| 6. |
How to find the oxidation number is correct? |
| Answer» bbm:73f4e35aD1D6522073f4e35a | |
| 7. |
Gibbs helmoltz equation |
| Answer» | |
| 8. |
what is comproportation reaction |
| Answer» | |
| 9. |
What is boiling point, freezing point and melting point |
| Answer» The temperature at which the pressure of liquid is equal to the atmospheric pressure | |
| 10. |
Why fluorine is strongest oxidising agent? |
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Answer» Due to higher electronegativity It has larger size and a helogen |
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| 11. |
Name a chemical used to prepare cephalosporin ? |
| Answer» | |
| 12. |
What is the structure of diborane? |
| Answer» | |
| 13. |
What is physical equillibrium |
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Answer» When in a chemical reaction, there\'s no any type of chemical change, then it seems to be physical equilibrium.For e.g. H2O(liquid)>= |
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| 14. |
Why group 2 elements called alkaline earth metal? |
| Answer» THE GROUP 2 ELEMENTS ARE KNOWN AS ALKALINE EARTH METAL BECAUSE THEIR OXIDE ARE ALKALINE IN NATURE. | |
| 15. |
What is hydride. |
| Answer» | |
| 16. |
How many pi bonds are there in C6H8 |
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Answer» 3 pi bond 3 pi bonds |
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| 17. |
Why ionic hydride are generally white ? |
| Answer» | |
| 18. |
Why water start Bolling on 100℃ |
| Answer» Because at 100degree c the pressure of water molecules is equal to the atmospheric pressure | |
| 19. |
What is paradox reaction |
| Answer» A paradoxical reaction or paradoxical effect is an effect of medical treatment, usually a drug, opposite to the effect which would normally be expected. An example of a paradoxical reaction is pain caused by a pain relief medication.Benzodiazepines frequently are administered to patients to induce sedation.Paradoxical reactions to benzodiazepines, characterized by increased talkativeness, emotional release, excitement, and excessive movement, are relatively uncommon and occur in less than 1% of patients. The exact mechanism of paradoxical reactions remains unclear. | |
| 20. |
Law of mass action |
| Answer» It is defined as product of concentration of products divided by product of concentrstion of reactants with each term raised to power of their stotchiomeric cooficients | |
| 21. |
Why hydration enthalpy increases when size deacreases |
| Answer» | |
| 22. |
Why water has its higher density at 4 degree centigrate.? |
| Answer» | |
| 23. |
Explain the hybridisation of pcl5 |
| Answer» Sp3 hybridization | |
| 24. |
Why some vegetables have bitter taste? |
| Answer» | |
| 25. |
What is the sixth state of matter |
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Answer» Fermionic condensate Bohrs einstien |
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| 26. |
Lithium forms only monoxide ,sodium forms peroxide and potassium forms superoxide why? |
| Answer» Due to anamolous behavior of li | |
| 27. |
What is dimer? How it is formed? |
| Answer» | |
| 28. |
What is decarboxylation ? |
| Answer» Removal of CO2 is called Decarboxylation | |
| 29. |
What is mola |
| Answer» | |
| 30. |
Prepration of dihydrogen only commercial method |
| Answer» lane process | |
| 31. |
What is principal quantum number |
| Answer» The principal quantum number n represents the relative overall energy of each orbital, and the energy of each orbital increases as the distance from the nucleus increases. The sets of orbitals with the same n value are often referred to as electron shells or energy levels. | |
| 32. |
What is common ion effect? |
| Answer» Common ion effect :-The reduction of the degree of dissociation of a salt by the addition of a common-ion is called the common-ion effect.If a salt of a weak acid is added to a solution of the acid itself, the dissociation of the acid is diminished further.\xa0For example, the addition of sodium acetate to a solution of acetic acid suppresses the dissociation of acetic acid which is already very small. Consider the equilibrium,CH3COOH ⇔ H+ + CH3COO-The addition of one of the products of dissociation (example:acetate ion), supplied by the largely dissociated salt (example:sodium acetate) pushes the equilibrium to the left. In other words, the dissociation of acetic acid is suppressed. Similarly, the addition of hydrogen ions furnished by the addition of a largely dissociated acid such as hydrochloric acid , also suppresses the dissociation of acetic acid. Thus, the common ion effect is the suppression of the dissociation of a weak acid or a weak base on the addition of its own ions. | |
| 33. |
What is limit in treatment? |
| Answer» | |
| 34. |
Preparation of limestone |
| Answer» CAO+co2----- Caco3 | |
| 35. |
In metal hydrides,what is the oxidation number of hydrides?why? |
| Answer» | |
| 36. |
The bond angle of NH3 is greater than NF3 . Explain with reason. |
| Answer» | |
| 37. |
Conformation |
| Answer» Different structures of an alkane formed by rotating C-C single bonded atoms are known as conformers and the process is known as conformation..... | |
| 38. |
in terms of Charle\'s law explain why -273°C is the lowest possible temperature? |
| Answer» | |
| 39. |
Modern periodic table draw |
| Answer» | |
| 40. |
How many volume of H2 release when 0.9gm of Al reacts with H2SO4 at stp |
| Answer» | |
| 41. |
What is first law ofthermodynamics |
| Answer» It is related to the energy conservation.The relation is given as∆Q=∆U+∆W | |
| 42. |
Write the Lewis structure of the following compounds |
| Answer» | |
| 43. |
Estimation of nitrogen |
| Answer» | |
| 44. |
What is kjeldahl\'s method and explain |
| Answer» Estimation of nitrogen | |
| 45. |
Relation between kp and kc |
| Answer» | |
| 46. |
what is equilibrium constant |
| Answer» If three forces acting at point | |
| 47. |
Draw structure of 3-Bromo-4-phenylpentanoic acid. |
| Answer» I have drawn it but how can I send u the photo of the structure? | |
| 48. |
sp2 hybridization example |
| Answer» HC2=CH2 | |
| 49. |
No of electron molecular orbital can have |
| Answer» | |
| 50. |
What is birch reduction? |
| Answer» | |