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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. |
Who discovered spectroscope |
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Answer» the SPECTROSCOPE was DISCOVERED by ROBERT Spectro |
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| 3. |
In which university did Mendeleev study |
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| 4. |
Write the name of the protein from which the cover of medicine campusle was made? |
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Answer» Explanation: capsules are made of Gelatin capsules also called as gel caps are composed of Gelatin made from ANIMAL skin. vegetative capsules are composed of hypromellose, a POLYMER FORMULATED from CELLULOSE |
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| 6. |
What is aerosol With an example. |
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Answer» Answer: An aerosol is a SUSPENSION of fine SOLID particles or LIQUID droplets, in air or ANOTHER gas. ... Examples of NATURAL aerosols are fog, dust, forest exudates and geyser steam. Examples of anthropogenic aerosols are haze, particulate air pollutants and smoke. |
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| 7. |
3. State the Gay Lussac's law of combiningvolumes. Explain with an illustration. |
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Answer» Explanation: Gay-Lussac's law, Amontons' law or the PRESSURE law was found by Joseph Louis Gay-Lussac in 1808. It states that, for a given mass and constant VOLUME of an ideal gas, the pressure exerted on the sides of its container is DIRECTLY proportional to its ABSOLUTE TEMPERATURE. |
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| 8. |
Name the substance which is used to make The LPG gas bed smell |
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Answer» Answer: Ethyl Mercaptan LPG gas is basically propane and butane, and it is odorless in its natural STATE. The SMELL that you notice when there is a leak is ACTUALLY of an entirely different agent, called Ethyl Mercaptan. This substance is added to the gas when it leaves the main storage terminals. |
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| 9. |
Hamari body main energy saabse pehle kahan banti hai kis part main kaise banti hai |
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Answer» Answer: Are bhai, sabse pahale, to Molecule banege, phir EQUAL PART me cells ke andar jayenge via blood, fir OXIDISE honge, tab energy milega |
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| 10. |
State three differences between macromolecular multimolecular and associated colloid ? |
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Answer» Explanation: Multimolecular COLLOIDS are formed by the aggregation of a large number of simple molecules, macromolecular colloids consists of macromolecules having SIZE in the colloidal RANGE. On the other HAND, associated colloids also called micelles, are generally electrolytes. They exist as ions at LOW concentration. |
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| 12. |
Formation of cacl2 molecules |
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Answer» Answer: 1 CALCIUM molecule and 2 CHLORINE molecule MAKES the calcium CHLORIDE |
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| 13. |
What will be the boiling point of sea water |
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Answer» Explanation: BOILING point of sea water is greater than the boiling point of NORMAL water |
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| 14. |
The correct increasing order of adjacent bond angle among BF3,PF3,ClF3 |
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Answer» Answer: Explanation: It is DUE to HYBRIDIZATION. |
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| 15. |
I want Derivation.it is tough to learn please let you teach very grateful for your students |
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Answer» what KIND of DERIVATION?? |
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| 16. |
many experts think that the climate is becoming warmer. can this cause smalll island and low lying lands to be inundated? How? |
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Answer» Answer: Yes, this can be caused Explanation: the ENVIRONMENT is GETTING warmer so that the ICES of any area is getting melted so the water level is RISING and that's why small island and low lying lands indundating |
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| 17. |
Species with dipole moment zero is? |
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Answer» Answer: Dipole moment of compound having regular geometry and same TYPE of auto is ZERO. it is VECTOR quantity.the zero dipole moment of BF3 is due to its symmetrical ( trigular planer ) structure... . . . . . . PLEASE follow me |
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| 18. |
how do the following properties vary as we move across the period and down the group 1. atomic radius 2. metallic character 3. non-metallic character 4. valency |
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Answer» 1. in a period while going from left to RIGHT, atomic radius goes on decreasing and the atomic number increases one by one, that means positive charge on nucleus increases by one unit at a time. 2. Metals have tendency to loose VALENCE electrons to form cations. This tendency of an element is called the metallic character of the element. 4. The valency of an element is DETERMINED by the number of electrons present in the OUTERMOST shell of it's atom, i.e. valence electrons. |
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| 19. |
Unit for molal depression constant |
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Answer» Explanation: the unit of molal DEPRESSION CONSTANT is KG / mole |
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| 20. |
What is pigment write four natural pigment |
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Answer» Answer: Pigments are a KIND of secondary metabolite i.e, their FUNCTIONS or role in host organism is not UNDERSTOOD. However, many of these are USEFUL to human welfare. eg- carotenoids, ANTHOCYANINS etc |
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| 21. |
Explain the postulates of Bohr's atomicmodel. |
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Answer» POSTULATES of Bohr's atomic model : According to Bohr's theory , electrons revolve in definite circular orbits AROUND the nucleus and these orbits are designated by the letters K, L, M, N or by the numbers 1, 2 ,3, 4 and so on. ... Such orbits are called as STATIONARY orbits or stationary states |
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| 22. |
What is crushing of ore |
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Answer» Answer: Definition of primary CRUSHING. In ore DRESSING, the first STAGE in which crushers take run-of-mine ore and reduce it to a size small enough to be taken by the next crusher in the SERIES. Ordinarily, the BLAKE jaw crusher or a gyratory crusher is used. Ref: Newton, 1. |
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| 24. |
Fe --------- Fe ^2+ + 2e-Explain why the reaction is oxidation |
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| 26. |
Why does the temperature remains constant whila melting of ice |
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Answer» Answer: This question is frequently asked.The is anwer is due to the latent heat of vaporization. Explanation: Latent heat of vaporization is the hidden heat STORED in solids to change into a liquid physical state by increasing their molecular atomic spacing. This heat is stored in the substance THUS during this process no extra heat is exerted or endozized thus no temperature difference occurs. This is same as in the CASE of ICE MELTING and the temperature remaining constant. Hope you found this helpful |
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| 27. |
What is reducing agent |
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Answer» hiiii ...... REDUCING agent:- it HELPS in reduction by LOSING the electronjai Mahakal ❤️ |
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| 28. |
Characteristics of adsorption |
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Answer» Answer: Explanation: (i) Adsorption refers to the existence of a higher CONCENTRATION of any PARTICULAR component at the surface of a liquid or a solid phase. (ii) Adsorption is ACCOMPANIED by decrease in the (free energy change) of the system when , adsorption equilibrium is SAID to be established. |
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| 29. |
Yoo Guys !! ❤Define Chemical Reaction |
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Answer»
ʜᴇʏᴀ..❣✔ Cʜᴇᴍɪᴄᴀʟ ʀᴇᴀᴄᴛɪᴏɴs ᴀʀᴇ ᴛʜᴇ ᴘʀᴏᴄᴇssᴇs ʙʏ ᴡʜɪᴄʜ ᴄʜᴇᴍɪᴄᴀʟs ɪɴᴛᴇʀᴀᴄᴛ ᴛᴏ ғᴏʀᴍ ɴᴇᴡ ᴄʜᴇᴍɪᴄᴀʟs ᴡɪᴛʜ ᴅɪғғᴇʀᴇɴᴛ ᴄᴏᴍᴘᴏsɪᴛɪᴏɴs.
ɪ ʜᴏᴘᴇ ɪᴛs ʜᴇʟᴘ ᴜ ᴛϙ ᴊᴀɴᴇᴍᴀɴ ❣ ᴘʀᴀᴄʜɪ❣ |
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| 30. |
Odisha, MadhyaHow is Coal Formed ?Coal is found deep inside the earth in theby the anaerobic thermal degradationtrees which got buried inside the earthearth in the formation of wood isis thermal degradation of the cohuried inside the earth million ofAnaerobic thermal degradation of woCarbonisation is a slow process and may takeace. Thus, the slow conversion of wood into comperature, high pressure and in the absence ofWood under the effect of high temperature argets converted into coal through a number of steps each steps leading an increase catbon content explain this lines by sending a video |
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Answer» Explanation: Over million of YEARS ago. In which PLANTS and animals are buried under the EARTH .Due to compressible on earth and under HIGH temperature ,high pressure and absence of AIR it slowly slowly converted into coal this process called carbonisation.this is the process coal formed. HOPE IT HELP |
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| 31. |
Why are oxidation and reduction reactions respectively called electron acceptor and electron donor??? |
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Answer» Answer: |
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| 32. |
158. Which of the following set of quantum numbers is notpossible?(1) n=3,1 = 2, m = 0, s = -2(2) n=3,1 = 2, m=-2, s= -2(3) n=3,1 = 3, m= -3,=-1/2(4) n= 3,1 = 0, m = 0, S = -2 |
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Answer» n=3,1=0, m=0, S=-2.......... |
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| 33. |
What 2,2,4,4-tetramethylpenthane |
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Answer» Explanation: Chemical Safety: Flammable Health Hazard Laboratory Chemical Safety Summary (LCSS) Datasheet Molecular Formula: C9H20 Chemical Names: 2,2,4,4-TETRAMETHYLPENTANE Di-tert-Butylmethane 1070-87-7 Pentane, 2,2,4,4-tetramethyl- UNII-7JS6EAL3EE More... Molecular Weight: 128.25 g/mol Dates: Modify: 2019-08-17 Create: 2005-03-26 CONTENTS 1 Structures Expand this section 2 Names and Identifiers Expand this section 3 Chemical and Physical Properties Expand this section 4 Spectral Information Expand this section 5 Related Records Expand this section 6 Chemical Vendors 7 Safety and Hazards Expand this section 8 Literature Expand this section 9 Patents Expand this section 10 Classification Expand this section 11 Information Sources 1Structures HelpNew Window 1.12D Structure HelpNew Window More ACTIONS Menu Chemical Structure Depiction 2,2,4,4-Tetramethylpentane.png Zoom in Zoom out from PubChem 1.23D Conformer HelpNew Window from PubChem 2Names and Identifiers HelpNew Window 2.1Computed DESCRIPTORS HelpNew Window 2.1.1IUPAC NAME HelpNew Window 2,2,4,4-tetramethylpentane from PubChem 2.1.2InChI HelpNew Window InChI=1S/C9H20/c1-8(2,3)7-9(4,5)6/h7H2,1-6H3 from PubChem 2.1.3InChI Key HelpNew Window GUMULFRCHLJNDY-UHFFFAOYSA-N from PubChem 2.1.4Canonical SMILES HelpNew Window CC(C)(C)CC(C)(C)C from PubChem |
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| 34. |
Short note on Hallogens |
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Answer» Answer: halogens BELONGS to 17th group they are HIGHLY oxidizing agent they are ELECTRONEGATIVE F is the most electonegative element ok follow me guys |
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| 35. |
1. Nickel can be used in the form of thin wire or finely divided powder– in which case the reaction would be faster?2. Can you put forward a quantitative model in support of your answer? Start with a nickel cube of side 1cm and proceed. |
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Answer» Answer 1. The finely divided powder Because in the finely powder FORM it will have more ions to dissociate and complete the REACTION faster. Here the powdered NICKEL ACT as a catalyst. |
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| 36. |
Gay lussac discovery of integer ratio in volume relationship is actully the law of difinet proportion by gaseous volume |
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Answer» Explanation: Law of COMBINING Volume Gay Lussac established this law. According to this law, the VOLUMES of reactants and products involved in gaseous reactions are related to each other by SMALL INTEGERS, provided the volumes are measured at the same temperature and pressure conditions. |
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| 37. |
5 examples for unbalanced force |
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Answer» Explanation: The examples of unbalanced force are:- 1.toy car which makes the car move from its position to rest. 2.When we holding a suitcase. 3. When we PLAY rope pulling ,suddenly we left the rope then,UNBALANCED force act on other teams. 4. Moving bicycle ,if there is no unbalanced force then,moving cycle go on moving for ever WITHOUT stop. 5. BALL is rolling . |
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| 38. |
Can isotopes of oxygen b placed in mmendeleve perio divas table?why?; |
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Answer» ANSWER is NO because isotope were not DISCOVERED at that time ,, hope it will HELP you BUDDY |
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| 40. |
Which catalyst is used when potassium chlorate is heated |
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Answer» MNO2 is taken as CATALYSTS to complete the REACTION as fast as possible |
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| 41. |
Chemical composition of silver when it rust |
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Answer» AgS- SILVER SULPHIDE. It is called TARNISHING not rusting. |
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| 42. |
which of the following radiations has the highest wave number X-rays, microwave, i r rays, radio waves |
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| 43. |
in which part of a group would you separately expect the elements to have (i)the greatest metallic character (ii)the largest atomic size |
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| 44. |
NO SPAMS PLEASEDuring hydrogenation of vegetable oil to produce solid fats, unsaturated plant oils are treated with hydrogen in presence in presence of a solid catalyst..... EXPLAIN |
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Answer» Hydrogenation occurs for DOUBLE bonds present in unsaturated plant oil , thus increasing melting point , converting into solid fats ( for high MP fats remain solid at room temperature). Now catalyst is USED to decrease the activation energy for this process. |
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| 45. |
Wnite down the actual value of charge and mass of an electron |
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| 46. |
6. Draw resonance srtuctures of thefollowing:A. PhenolB. BenzaldehydeC. Buta-1,3-diene D. Acetate ion |
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Answer» A Explanation: |
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| 47. |
Find the frequency of radiation of visible light having wavelength 6000 amstrong |
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Answer» Answer: 9.06×10^24 Hz Explanation: |
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| 48. |
8. Write true or false. Correct the falsestamentA. Homolytic fission involvesunsymmetrical breaking of a covalentbond.B. Heterolytic fission results in theformation of free radicals.C. Free radicals are negatively chargedspeciesD. Aniline is heterocyclic compound.i naturally occuring alkane |
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Answer» Answer: A.false- heterolytic fission INVOLVES UNSYMMETRICAL BREAKING of a COVALENT bond B.false -heterolytic fission RESULTS in the formation of ions i.e positive or negative C.false aniline cyclic compound i.naturally ovcuring alkane |
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| 49. |
What do helium and neon have in common? |
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Answer» Explanation: Such is the case with Group 8, which is sometimes called Group 18, a collection of non-metals known as the noble gases. The six noble gases are helium (He), neon (Ne), argon (Ar), krypton (Kr), XENON (XE), and radon (Rn). |
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| 50. |
9. Phytane is naturally occuring alkaneproduced by the alga spirogyraand is a constituent of petroleum.The IUPAC name for phytane is2,6,10,14-tetramethylhexadecane. Writezig-zag formula for phytane. Howmany primary, secondary, tertiary andquaternary carbons are present in thismolecule. |
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Answer» Explanation: zig-zag FORMULA of phytane and primary, SECONDARY, tertiary, quaternary carbon present in molecule is GIVEN in below PHOTO |
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