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. |
Identify the compound of calcium which is used for plastering of action bond with the help of chemical equation show that |
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| 3. |
values of acids A, B, C, D are 1.5, 3.5, 2.0 and 5.0. Which of them is strongest acid ? |
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| 4. |
is a powerful oxidizing agent, capable of effecting the following reaction: Compare the first ionization energy of (12.5 eV) with those of the noble gases. Which, if any, of the noble gases might undergo a comparable reaction with ? |
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Answer» kkgdkgdkgdfhddkhdkhd&kgdjgdjydjgdkskskd |
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| 5. |
Saturated and unsaturated fatty acid which of these is best for consumption |
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Answer» ated is best for consumption For EXAMPLES these include NUTS seeds and VEGETABLE oil |
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| 6. |
How many moles of methane are required to produce 22 gram carbondioxide after combustion? |
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| 7. |
Write chemical equation of the reaction of ehanoic acid with the following -(a)Na (b) Naoh (c) ch3ch2oh |
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Answer» +Na➡️ch3coona+1/2H2Ch3cooh+NaOH➡️Ch3coona+h2oCh3cooh+ch3ch2oh ➡️ CH3COOCH2CH3 + H2O. |
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| 8. |
What is the IUPAC name of this... |
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Answer» l-2- METHYLPENTANE should be the ANSWER |
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| 9. |
undergoes disproportionation reaction. Give reason. |
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Answer» ortionation is a CHEMICAL REACTION, typically a redox reaction, where a molecule is transformed into two or more dissimilar products. In a redox reaction, the species is SIMULTANEOUSLY oxidized and REDUCED to form at LEAST two different products. Disproportionation reactions follow the form: 2A → A' + A" |
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| 10. |
and are isolobal. Explain. |
| Answer» END...Here is your answer..Both BH−4 and NH+4 have tetra hedral SHAPES and have SP3 hybridized ORBITALS, Hence they are isolobal.HOPE that it will HELP you | |
| 11. |
is a gas while is liquid. Explain. |
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Answer» lecular forces. Silicon dioxide is really strange with its shape. You'd assume it to be linear like CARBON dioxide but it holds a more tetrahedral ORIENTATION. This polarizes the molecule and helps them form complex chains of silicon dioxide. It's hard to find black and white information on this as many articles will contradict each other. But we do use silica as a polar surface for TLC and glass does have a slight ATTRACTION to WATER. So I GUESS that's the answer. Silicon dioxide is polar. Carbon dioxide is not. |
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| 12. |
, ΔH = –242 kJ . Bond energy of and are 436 kJ and 500 kJ respectively. What is bond energy of O-H bond. |
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Answer» dkyditdktdkkdkgxmgxkgxkgckckhfkhfkfmcm |
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| 13. |
exists but does not. Explain. |
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Answer» sjfsjfzjfzjfsjfxmgxlgxkhxkhxlydykslhd |
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| 15. |
Why is aqueous ammonia used for removing stains from woollen clothes??? I NEED A PROPER ANSWER WITH REASON!! NO SPAMMING |
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Answer» iend...the ANSWER to your QUESTION is here...Ammonia is an alkaly, as such it will saponify oil and grease.The resulting soapy substance will be used for removing STAINS from woollen clothes.i hope this HELPS,mark it as brainliest |
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| 17. |
atoms of carbon are arranged side by side. Calculate the radius of carbon atom if the length of this arrangement is 2.4 cm. |
| Answer» HAI how are you what is your NAME | |
| 18. |
of combustion of methane is -X kJ . The value of is: (i) (ii) (iii) (iv) = 0 |
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Answer» t is your NAME |
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| 19. |
What are various types of mixtures? Give at least one example in each case? |
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| 20. |
Heating coal in air to form carbon dioxide is what type/of reaction |
| Answer» COAL in air obtain co2 is EXOTHERMIC REACTION | |
| 21. |
Have read about acid rain which causes in the regions of heavy pollution gases like carbon dioxide nitrogen dioxide sulphur dioxide i live in the atmosphere rainwater dissolves these gases and forms carbonic acid nitric acid and sulphur |
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Answer» gyfydjygn. vtvdgkfjh |
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| 22. |
H2 + cl2 2hcl which of these describes the rate of this chemical reaction |
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Answer» the galusake LAWS |
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| 23. |
Name the gas evolved when aluminiumm carbide is adeef to with warm water |
| Answer» EVOLVED is METHANE MARK me BRAINLIEST | |
| 24. |
How to calculate the concentration of metal ion through titration method? |
| Answer» CKG. odjekdvkd geksgndke | |
| 25. |
Criss cross method for HCL |
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Answer» as a brainielist ANSWER. |
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| 26. |
Calculate the wavelength and momentum of α particle moving with a speed of 10^5cm/sec |
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Answer» ! just LOOK at the solution. look velocity is GIVEN so we can easily CALCULATE momentum .I considered the mass of that particle to be'm'. So momentum =1000m.You have to change velocity in its SI units.now WAVELENGTH=h/mvthis formula is from debroglie HYPOTHESIS. after plugging all the values we get wavelength =6.626×10^-37/m.The value of planck's constant is 6.626×10-34. |
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| 27. |
How does tincture iodine affects the wound? |
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Answer» e of Iodine is an ANTISEPTICS. In that the elemental iodine is 2 to 7%. It is also a WEAK iodine.Hope it will HELP you. |
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| 28. |
Four factors which indicate whether chemical reactuon has taken place |
| Answer» LOWING can indicate that a chemical change has taken place, ALTHOUGH this evidence is not conclusive: Change of odor. Change of color (for example, silver to reddish-brown when iron rusts). Change intemperature or ENERGY, such as the PRODUCTION (EXOTHERMIC) or loss (endothermic) of heat.HOPE IT HELPS:-BE BRAINLY | |
| 29. |
Which of the following gas is easily liquified ? 1. NH3 2.NCl3 Reason please |
| Answer» CALLED ashru GAS rulane VALI gas but NCL is not this | |
| 30. |
How to calculate the velocoty of ezynatic reaction? |
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Answer» catalysis is detected by measuring either the APPEARANCE of product or disappearance of reactants. To measure something, you must be able to see it. Enzymeassays are tests developed to measure ENZYME ACTIVITY by measuring the change in CONCENTRATION of a DETECTABLE substance. |
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| 31. |
How is the estimation of halogens done by carius method? |
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Answer» and hydrogen present in the compound are oxidised to carbon DIOXIDE and water. The halogen present forms the corresponding silver halide (AgX). It is FILTERED, washed, DRIED and weighed. Let the MASS of organic compound taken = m g Mass of AgX FORMED = m1 g 1 mol of AgX contains 1 mol of X Mass of halogen in m1 g of AgX = (atomic mass of X x m1)/(molecular mass of AgX) |
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| 32. |
Find the molecular formula of ethane and methane having functional grp cl |
| Answer» HANE, it's Ch3clFor ETHANE, it's CH3CH2CL. | |
| 33. |
From the standpoint of atomic structure, what determines which element will be the first and which, the last in a period of the periodic table??? ⬇⬇⬇⬇GOOD ANSWERS PLEASE.... |
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Answer» HE NUMBER OF SHELLS AND NUMBER OF ELECTRONS ON THEM.SURE IT WILL HELP YOU |
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| 34. |
how are hydrocarbons classified? give an example of each class hydrocarbons and write the structural formula. |
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Answer» ur ans.... HYDROCARBON are of TWO types :1) SATURATED HYDROCARBON - it containsC-C single bond.Ex- Alkane (CNH2N+1) ; n= no. of CARBON ATOM.2) UNDERSTAND HYDROCARBON-it contains C-C double bond.Ex- Alkene(CnH2n) ; n=no. of carbon atom AND Alkyne(CnH2n-1); n=no.of carbon atom#HOPE YOU UNDERSTAND IT |
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| 35. |
Name three elements with valency 3 |
| Answer» N, PHOSPHORUS and ARSENIC | |
| 36. |
Q 7) what happens when : -- solution of barium chloride and sodium sulphate react together. |
| Answer» NA2SO4 --> BASO4 + 2NaCl | |
| 38. |
Why does the transition elements form complexes? |
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Answer» ion-metal IONS FORM COORDINATION complexes because they have empty valence-shell orbitals that can accept pairs of electrons from a Lewis base. Ligands must therefore be Lewis bases. They must CONTAIN at least one pair of nonbonding electrons that can be donated to a metal ion. |
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| 39. |
Why we get addicted to drugs? |
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Answer» re certain CHEMICALS in drugs which RELEASES certain toxins in our brain and body,these toxins MAKE our brain feel better and YET we get ADDICTED to it |
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| 40. |
Plz can anyone help to solve these ?? |
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Answer» nzene ISOCYANIDE.(2). It's C6H5N=O + 2Ag.(3). RNH2(4). CH3CH2OH. |
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| 41. |
Give a reason why nitrogen is considered as non polluting gas |
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Answer» n is a fairly non-reactive GAS . it does not readily react with any materials . It is also the most prevalent gas in the ATMOSPHERE . it is not affective to plants and animallife . It is also acts as a natural FERTILIZER and ENRICHES SOIL, |
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| 42. |
Give a reason why nitrogen is not considered uplifting gas |
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Answer» end... Here is your ANSWER.. Nitrogen is not stable as a part of a crystal LATTICE, so it is not incorporated into the solid Earth. That is why it is not CONSIDERED as a uplifting gas.HOPE that it will help you.. |
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| 44. |
If an iron M 3 + contain 10 electrons and 14 Newton what are the atomic number and mass number of the elements |
| Answer» MIC NUMBER is = (10+3) = 13 and the MASS number is = (13+14) = 27. | |
| 45. |
What is dry and wet test for anion |
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Answer» test of anion is a basic test performed to detect the presence of element in compound by introducing the SAMPLE to the flame for noting the color produced since some common and the certain element can be detected by MEANS of their characteristics flame colorThe wet test of an anion is the test which is based on the principle of TREATING solution with succession of reagents so that each reagent can separate a GROUP of reagent |
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| 47. |
Example of completely miscible liquid which can be easily separated by fractional distillation |
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Answer» of WATER and ALCHOHOL can be easily SEPARATED by fractional DISTILLATION as they are completely miscible liquids.Hope this will help you. If you like my answer Please mark it as BRAINLIEST And Be my FOLLOWER if possible. |
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| 48. |
Evaporation is a type of vaporization that occurs on the surface of a liquid as it changes into the gas phase. The surrounding gas must not be saturated with the evaporating substance. When the molecules of the liquid collide, they transfer energy to each other based on how |
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