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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. |
Hi increase your follower upto 100 in 5 hrs |
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Answer» i have ALREADY.. |
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| 2. |
IUPAC name of HOCH2CH2CH=CHCH2Cl |
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Answer» Answer: 1-chloropentenol Explanation: HOPE you GOT it MARK it BRAINLIEST |
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| 3. |
What is sopanification |
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Answer» Answer: PLZ MARK AS BRAINLIEST ANSWER AND THX FOR THE BRILLIANT QUESTIONSaponification is a process that involves conversion of fat or oil or lipid into soap and alcohol by the action of HEAT in the presence of AQUEOUS alkali. SOAPS are salts of fatty acids and fatty acids are monocarboxylic acids that have long CARBON chains e.g. sodium palmitate |
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| 4. |
Write the molecular orbital electronic configuration of N2- |
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Answer» HELLO! Check out the ATTACHMENT for the ELECTRONIC configuration. I have ALSO calculated the bond order. Thanks! |
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| 5. |
B) The electronic configuration of an element M is 2,8, 3. Theni) What is the atomic number of this element?ii)State whether element M is a metal or a non metal.III) What type of ion will be formed by an atom of element M? Why?1V)Draw the electron dot structure of the above element. |
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Answer» Answer: 1:132:Metal(ALUMINIUM)3:Positive ion as it DONATES 3 electrons to form electronic CONFIGURATION of the nearest NOBLE gas |
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| 6. |
What are the properties of solder |
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Answer» A solder is a FUSIBLE metal alloy with a MELTING point or melting RANGE of 90 to 450°C (200 to 840°F), used in a process CALLED soldering where it is melted to join metallic surfaces. It is especially useful in ELECTRONICS and plumbing. Alloys that melt between 180 and 190°C are the most commonly used |
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| 7. |
Please classify theese into pure substances and mixtures |
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| 8. |
(vi) The number of moles of methyl iodide required to preparetetramethyl ammonium iodide from 1 mole of methyl amineis/are :(a) 1(b) 2(c) 3(d) 4 |
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Answer» The number of MOLES of methyl IODIDE required to prepare TETRAMETHYL ammonium iodide from 1 MOLE of methyl amine is THREE |
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| 9. |
Difference between vegetable oil and animal fats |
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Answer» Answer: VEGETABLE OIL is composed mostly of POLYUNSATURATED fats while animal fat is composed mostly of monounsaturated fats. Vegetable fats CONTAIN one, or more, carbon double BONDS within its structure and are therefore unsaturated. Animal fats contain only single carbon-carbon bonds and are therefore saturated. Explanation: |
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| 11. |
I whant to know about Indicators,, can any1 help me??? |
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Answer» Indicators can be USED to IDENTIFY acids and bases..common INDICATOR is PH PAPER |
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| 12. |
Give difference between pie and sigma bond |
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Answer» Answer: Difference Between Sigma and Pi Bond. ... Sigma bond is a CHEMICAL bond formed by the co-axial or linear overlapping of atomic orbitals of two atoms. Pi bond is a TYPE of covalent bond that exists between atoms where the ELECTRONS are on top and BOTTOM of the axis connecting the nuclei of the joined atoms. lfollow mw |
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| 13. |
1. Tym2. FeSO,+3. A, O, +a un uso→ Fe(OH),+→ 2A1CI, + |
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Answer» WRITE the QUESTIONS CLEARLY not UNDERSTAND |
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| 14. |
Which out of Nh3 and nf3 has higher dipole moment and why |
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Answer» →NH3 has higher dipole MOMENT than NF3 . » REASON: in case of NH3, NITROGEN is more electronegative than hydrogen,so it tries to pull the electrons from hydrogen ATOMS. where as in case of NF3, FLUORINE being more electronegative than nitrogen tries to pull the electrons from nitrogen opposite from that of nitrogen |
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| 15. |
EXPERIMENT-13To detect the presence of extra elements (nitrogen, sulphur and hal.an organic compound.and halogens) in organic compounds observation table |
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Answer» @@@ |
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| 16. |
a solid layer at the bottom of the container when a solid liquid mixture is allowed to stand for sometime |
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| 17. |
Sodium is less reactive than potassium |
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Answer» Sodium is less reactive than potassium because the atomic size of sodium is SMALLER than potassium. HENCE, sodium has more greater electrostatic force of attraction between it's ELECTRONS and nucleus.So it less readily LOSES electrons than potassium. hope..it..helps... mark..me...brainliest |
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| 18. |
Explain the structure of CO 32- ion in terms of resonance |
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Answer» HELLO! In the carbonate ION, the double negative charge is due to the negative charge on the two OXYGEN atoms at a SINGLE cannonical STRUCTURE. The hybridisation of Carbon is sp². Check out the ATTACHMENT for the resonating structures of the anion. Thanks! |
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| 19. |
What are the convection used in writing a chemical reactions? |
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Answer» Answer: SORRY bro I m BAD at CHEMISTRY. sorry very sorry mate |
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| 20. |
What is the difference between vegetable oil and animal fats |
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Answer» Explanation: vegetable OIL is COMPOSED mostly of polyunsaturated fats while animal fat is composed mostly of monounsaturated fats. Vegetable fats CONTAIN one, or more, carbon double bonds within its structure and are THEREFORE unsaturated. Animal fats contain only SINGLE carbon-carbon bonds and are therefore saturated. |
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| 21. |
Explain the formation of bleaching powder with chemical equations. |
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Answer» Chemical formula of Bleaching Powder is CaOCl2 and its Chemical name is Calcium OXYCHLORIDE. It is Prepared by Chlorine gas over dry SLAKED LIME. GENERALLY this method is used in large scale preparation of bleaching powder. |
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| 22. |
What is Active Mass and how its related to Law if mass Action?? |
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Answer» Active MASS is defined as NUMBER of g MOL per litre. It is also KNOWN as molar concentration or MOLARITY. |
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| 24. |
Bond angle in Nh3 is more then in H2O . justify |
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Answer» Explanation: NH3 has a bond angle of 107. NH3=5+3x1=8 Each hydrogen atom is linked to the NITROGEN atom. This leaves out ONE lone pair. H2O has a bond angle of 104.5. H2O=1x2+6x1=8 Same as NH3 Each hydrogen atom is linked to the oxygen atom. They cannot be double bonded because the hydrogen shell only ALLOWS 2 electrons which is already "filled" with the first covalent bond. There are thus 2 lone pairs on the oxygen atom. The lone pairs has electron repulsion SPREADING the bonds further apart. |
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| 25. |
What is denaturation of protein ? ( only one marks questions so please answer this in a line) |
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Answer» Answer: Denaturation, in biology, PROCESS MODIFYING the MOLECULAR STRUCTURE of a protein. Explanation: |
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| 26. |
PLS ANSWER FAST! Do you know Hinkik? If not, go search on Youtube, He makes awesome songs. |
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Answer» OK............. ... ............... |
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| 27. |
Difference between soaps and detergents??? |
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Answer» Soaps are biodegradable while some of the detergents are non-biodegradable. Soaps have relatively weak cleansing action whereas; detergents have a strong cleansing action. A DETERGENT is a sodium salt of alkyl benzene sulphonate or of a fatty ALCOHOL sulphate. A soap is a sodium or POTASSIUM salt of HIGHER fatty acids |
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| 28. |
Heating or cooling can change the state of water. Ice starts melting at 0°C. This is called the melting point of ice. Water, on cooling, changes to ice at 0°C. Thus, the freezing point of water is 0°C.How??Pls explain15 points |
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Answer» Answer: because it is the POINT where the water STARTS FREEZING and if it is ice it starts MELTING because it is very cold hope you understand Please mark as brainiest answer |
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| 29. |
in 4.5kg solution having density 1.5gm per ml 1200gm solute present having density 1.2gm per ml then calculate volume%of solvent present in it |
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| 30. |
What is name of sugar unit in DNA and RNA???? |
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Answer» The FULL name of DNA, deoxyribonucleic acid, gives you the name of the sugar present - deoxyribose. Deoxyribose is a modified form of another sugar called RIBOSE. ... Ribose is the sugar in the backbone of RNA, ribonucleic acid. |
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| 31. |
Why all carbon to oxygen bonds in CO 32- are equivalent |
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Answer» Answer: All carbon to oxygen bonds in CO3 2- are equivalent. ... Thus, the RESONANCE HYBRID structure of carbonate ANION with fractional charges and delocalised ELECTRONS is: Due to this resonance, all the C-O bonds in carbonate anion are of equal length which is around 136 pm Explanation: |
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| 32. |
Which electrolyte are used in fuel cell ? |
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Answer» Answer: Potassium hydroxide Alkali fuel cells OPERATE on compressed hydrogen and oxygen. They generally use a SOLUTION of potassium hydroxide (chemically, KOH) in water as their electrolyte. Efficiency is about 70 percent, and operating temperature is 150 to 200 degrees C, (about 300 to 400 degrees F). |
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| 33. |
Why BF3 has a zero dipole moment although the BF bonds are polar |
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Answer» Boron trifluoride is has zero dipole moment although it has three polar B—F bonds. This is because BF3 has sp2 hybridisation and REGULAR trigonal planal geometry. And hence the individual dipole moments of polar bonds GET cancelled and overall dipole moment is zero. Explanation: |
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| 34. |
2-methylpronaCH3 - CH₂ - CH-E-H + CH3-CH2-C01 - Enderesси,он сиз ин- НоСИ: -Си, - сд - Сн - c-cн, --и - H2O ,CH3 CH3 |
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Answer» MAKE SURE that all WORDS are SPELLED correctly. Explanation: |
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| 36. |
Methylamine is stronger base tha ammonia . why ? |
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Answer» methylamine a stronger BASE than ammonia since it as a election donating group (methyl). THEREFORE electron density on NITROGEN ATOM increase. Hence it is stronger base,whereas in ammonia electron donating group is absent.So it is weak base when compared to methylamine. hope it will help u .. |
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| 37. |
which of the following is in the outermost shell for element of periodic 3 (a) K shell (b) M shell (c) L shell (d) N shell |
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Answer» Answer: HOPE IT HELPS DEAR MATE!! PLEASE MARK AS BRAINLIEST PLEASEEEE!!! |
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| 38. |
Two reason for Carbon forming a large number of compounds name the type of bonding found in most of its compounds why does carbon form compounds mainly by this kind of bonding? b) give reason why the carbon compounds: i) generally have low melting and boiling pointsexplain in detail. |
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Answer» Answer: catenation and tetravalency covalent bonds because its impossible to give 4 electrons or gain 4 electrons Explanation: it has LOW MELTING and boiling points because they have weak intramolecular FORCES between them due to covalent bonds |
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| 39. |
What type of hybridisation explains the trigonal bypiramidal shape of SF4 |
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Answer» Answer: SF4 molecule SHAPE is seesaw. It POSSESS sp3d hybridisation. There R 4 bonded pairs of electrons and one lone pair of electeon on S. Lone pair occupies equatorial position in trigonal bipyramidal structure Explanation: |
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| 40. |
9. How will you indicate the following effects in a chemical equation?(a) A solution made in water(b) Exothermic reaction(C) Endothermic reaction |
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| 41. |
What is the type of hybrid orbitals associated with B atom in Bh4- |
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Answer» The compound BH4 does not EXIST as BORON(2,3) has only THREE electrons in its outermost shell . The most common compound of Boron with Hydrogen is Borane(BH3), which is sp2 hybridised. In the hybridised form BH4 exists as BH4- NAMED Boranuide, Borohydride with sp3 hybridisation Explanation: |
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| 44. |
Which of the species have similar shape and why ?No2-,No2-+,CO2 and CO |
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Answer» No2-,No2+,CO Explanation: Except CO2 all are having similar STRUCTURE ,co2 is having LINEAR shape remaining all are having triangular shape |
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| 45. |
Chemical properties of hydrogen peroxide |
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Answer» Hydrogen PEROXIDE is a highly unstable CHEMICAL compound. Two MOLECULES of hydrogen combine with two molecules of oxygen to FORM hydrogen peroxide. Hence, its chemical formula is H2O2. Hydrogen peroxide is a pale blue, clear liquid, slightly more VISCOUS than water in its pure form. hope u get it .. |
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| 46. |
Plzzzz haallpp meee |
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Answer» calm down I will answer the 4th one is the answer now you will be ALRIGHT |
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| 47. |
Give an example of (1) diatomic (2) triatomic molecular of compounds |
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Answer» diatomic :hydrogen,CHLORINE. triatomic :WATER,CARBONDIOXIDE |
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| 48. |
Question is in the attachment given..... |
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Answer» Answer: 1) नीलकण्ठ - नीला कण्ठ है जिसका अथार्त् शिवजी - बहुब्रीहि समास 2) यथासमय - समय के अनुसार - अव्ययीभाव समास 3) आमरण - मृत्यु तक - अव्ययीभाव समास 4) जेबखर्च - जेब के लिए खर्च - तत्पुरुष समास 5) दुःख - सुख - दुःख और सुख - द्वंद्व समास MARK mE BRAINLIEST ♥ |
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| 50. |
What is buna-s rubber ? |
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Answer» ANSWER: MARK as brainliest and follow me please Explanation: Buna-S Rubber: ... The rubber obtained is also called Styrene butadiene rubber (SBR). In Buna-S, Bu stands for butadiene and, Na for sodium and S for styrene. It is vulcanised with SULFUR. The rubber is slightly inferior to natural rubber in its physical properties.D |
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