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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. |
What is the role of a fractionating column in the fraction distillation method? |
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Answer» Answer: Fractionating columns HELP to separate the mixture by allowing the mixed vapors to cool, condense, and vaporize again in accordance with RAOULT's law. ... In a typical fractional distillation, a liquid mixture is HEATED in the DISTILLING flask, and the resulting vapor rises up the fractionating column. PLEASE MARK ME AS A BRAINLIST |
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| 2. |
Organic compounds are huge in number due to __________? |
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| 3. |
3. Identify the molecule which undergoes s-p overlap(1 Point)ChlorineHCIHydrogenFlourine |
Answer» FlourineExplanation: MARK me as brainlliset. |
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| 4. |
even two or three crystals of potassium permangante can impart colour to a very large volume of water ( answer in very short form) |
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Answer» Even two-three crystals of “potassium PERMANGANATE” can IMPART colour to a “large volume of water” due to the natural phenomenon of diffusion. Diffusion is a PROCESS in which the solute particles move from regions of "HIGH concentration to regions" of "lower concentration" without the presence of any membrane. |
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| 5. |
Water is.... solvents |
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Answer» Explanation: Water is CAPABLE of DISSOLVING a variety of different SUBSTANCES, which is why it is such a GOOD solvent. And, water is called the "universal solvent" because it dissolves more substances than any other liquid. ... This allows the water molecule to become ATTRACTED to many other different types of molecules. |
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| 6. |
How can you classify between NaCl and CCl4 |
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Answer» Answer: CCL4 is an organic compound CONSISTING of a carbon ATOM covalently bonded to four chlorine atoms. NaCl is WHITE in color used as salt in our daily life!! |
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| 7. |
Which of the following has largest bond angle |
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| 8. |
Most people understand that there are health risks associated with smoking and using tobacco products. In spite of this knowledge, many people still choose to smoke and use tobacco. What are some specific actions that the government has taken to try to curb the use of tobacco products? |
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Answer» Answer: 1-They should STOP company from manufacturing tobacco 2-Government should BAN tobacco 3-people who are selling tobacco should be arrested 4-People should not purchase tobacco so the company WIL shut down because from no MONEY |
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| 9. |
Two elements m and n have a atomic number 17 and2p respectively. Write the formula of the compound when m and n react |
Answer»
i HOPE this would be helpful to you please give a branliest answer mark |
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| 10. |
What can be interred from the different colours found on the filter paper |
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Answer» Answer: Dip ANOTHER cotton swab in water and MOVE it around so it GETS thoroughly wet. Place the wet end of the swab in the center of the food COLORING dot so that water can absorb into the coloring and the filter. Lay the swab down as SHOWN. |
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| 11. |
Particle model can explain which processes |
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Answer» Answer: The air you BREATHE, your books, your desk, and EVEN your body all consist of particles that are in constant motion. Thus, the particle model can be used to EXPLAIN the PROPERTIES of solids, liquids, and gases. It can also be used to explain what happens in changes of state Explanation: pleasemark as BRAINLIST |
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| 12. |
Hydro energy is(a) naturally occurring energy (b) replenishable (c) naturally occurring and replenishable (d) ingaseous form |
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Answer» c MARK me the BRAINLIEST N like n rate PLEASE |
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| 13. |
Why cotton fabric are preferred for moping in the household cleaning ? |
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Answer» Answer: DUE TO THE FACT THAT COTTON SOAKS IN THE WATER AND IS EASIER TO CLEAN THINGS WITH. |
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| 15. |
Optical isomerisms examples |
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Answer» Answer: OPTICAL isomers are used EXTENSIVELY in medicine. ... EXAMPLES are: the volume of distribution of (R)-methadone is 2x more than that that of (S)-methadone due to lower plasma BINDING and increased tissue binding. the clearance of (R)-fluoxetine is about 4x greater than (S)-fluoxetine due to a higher rate of enzyme metabolism. |
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| 16. |
in a compound represented by cocl4nh3 how many ammonia molecules satisfy the secondary valence of cobalt if one mole of compound upon treatment with excess agno3 produces one mole of agcl write iupac name of obtained complex |
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Answer» Explanation: 4NH3 on reaction with excess of AGNO3 GIVES one mole of white PRECIPITATE that is [Co(NH3)4Cl2]Cl .If true enter 1, ELSE enter 0. |
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| 17. |
A gaseous mixture containing 4 gram of methane ch4 and 1 gram of h2. were enclosed in a vessel of 4 litre capacity at 27 degree celsius calculate the pressure of container |
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Answer» <P>Answer: no. of moles of nitrogen GAS = 28 56
=2 no . of moles of carbon-dioxide gas = 44 44
=1 no. of moles of methane = 16 16
=1 Total no. of moles in the mixture = 4 Thus, mole fraction of methane =X CH 4
=1:4 P CH 4
=P.X CH 4
X CH 4
= 4 1
P CH 4
=180 mm |
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| 18. |
1) Which of the following can be called contaminant ?(a) CO(b) SO2(c) Ar(d) C12 |
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Answer» the HIGHEST VALUE in the OPPORTUNITY to MEET you in |
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| 19. |
A plant is respiring anaerobically, it is supplied with oxygen, this would lead to— * 1 point |
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Answer» ANAEROBIC respiration is respiration using electron ACCEPTORS other than MOLECULAR oxygen (O2). Although oxygen is not the final electron acceptor, the process still uses a RESPIRATORY electron transport chain.Molecular oxygen is a high-energy oxidizing agent and, therefore, is an EXCELLENT electron acceptor. hope it will help you❤️❤️✌️✌️ |
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| 20. |
All tha name of siencetist and her inventions are describ? |
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Answer» Answer: 1. RONTGEN DISCOVERED X- rays. 2.ARCHIMEDES invented Archimedes screw. 3. Benjamin franklin invented Franklin stove. |
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| 21. |
Which of the following mixtures has all of its constituent substances as compounds1-Air2-Salt solution 3-Brass4-Soil |
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Answer» SALT solution Explanation: Salt solution the REASON behind this is that in this salt is a COMPOUND I.e NaCl and water I.e H²O is also a compound so it has 2 compounds |
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| 22. |
State 5 safety measures that should be taken in the chemistry lab? |
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Answer» Answer: 1. WEAR MASK 2. WEAR GLOVES 4. DO NOT SMELL ANY CHEMICALS |
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| 23. |
Vi) Alkyl benzene is better obtained through acylation of benzene due to -a) absence of poly alkylation b) absence of isomerisationc) absence of decompositiond) none of these |
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Answer» I not UNDERSTAND this QUE Explanation: |
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| 25. |
8oState true ar false (a)Principle quantum number tells us about theshell In which an electron is present |
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Answer» nsnnsnanakapaosiddhbdbsns.s bsbdbdbebbdbfhfhjfma |
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| 26. |
Calculate the concentration of the solution when 80 g of NaOH is dissolved in 1 dm^3 of water.please don't spam random letters. |
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| 27. |
10 The electronic configuration of four elements Bond D are given. Using these answers the following questionsA 28.18.1 B9C288 02.84a Which of these are severb. What will be formum of the |
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Answer» ELEMENT Atomic NUMBER Electronic CONFIGURATION Element Atomic number Electronic configuration Hydrogen 1 1 Element Atomic number Electronic configuration Hydrogen 1 1 Helium 2 2 Element Atomic number Electronic configuration Hydrogen 1 1 Helium 2 2 Lithium 3 2,1 Element Atomic number Electronic configuration Hydrogen 1 1 Helium 2 2 Lithium 3 2,1 BERYLLIUM 4 2,2 Element Atomic number Electronic configuration Hydrogen 1 1 Helium 2 2 Lithium 3 2,1 Beryllium 4 2,2 Boron 5 2,3 Element Atomic number Electronic configuration Hydrogen 1 1 Helium 2 2 Lithium 3 2,1 Beryllium 4 2,2 Boron 5 2,3 Carbon 6 2,4 Element Atomic number Electronic configuration Hydrogen 1 1 Helium 2 2 Lithium 3 2,1 Beryllium 4 2,2 Boron 5 2,3 Carbon 6 2,4 Nitrogen 7 2,5 Element Atomic number Electronic configuration Hydrogen 1 1 Helium 2 2 Lithium 3 2,1 Beryllium 4 2,2 Boron 5 2,3 Carbon 6 2,4 Nitrogen 7 2,5 Oxygen 8 2,6 Element Atomic number Electronic configuration Hydrogen 1 1 Helium 2 2 Lithium 3 2,1 Beryllium 4 2,2 Boron 5 2,3 Carbon 6 2,4 Nitrogen 7 2,5 Oxygen 8 2,6 Fluorine 9 2,7 Element Atomic number Electronic configuration Hydrogen 1 1 Helium 2 2 Lithium 3 2,1 Beryllium 4 2,2 Boron 5 2,3 Carbon 6 2,4 Nitrogen 7 2,5 Oxygen 8 2,6 Fluorine 9 2,7 Neon 10 2,8 Element Atomic number Electronic configuration Hydrogen 1 1 Helium 2 2 Lithium 3 2,1 Beryllium 4 2,2 Boron 5 2,3 Carbon 6 2,4 Nitrogen 7 2,5 Oxygen 8 2,6 Fluorine 9 2,7 Neon 10 2,8 The elements of these groups are called representative elements |
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| 28. |
Draw the lewis dot structures of Bcl |
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| 29. |
Give one use tin plating in daily life |
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Answer» The tin plating process is used for various purposes,but the most common use of tin plating is to PRODUCE a corrosion PROOF metal surface which is very useful in our daily LIFESTYLE. The tin plated corrosion resistance is effective,cheap and light WEIGHT which is ideal for daily USAGE. |
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| 30. |
Calculate the concentration of the solution when 80 g of NaOH is dissolved in 1 dm^3 of water. |
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Answer» Explanation: by this METHOD U will GET the proper answer to put the nos. which is there in u R question and then calculate... |
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| 31. |
Differentiate between DL forms of stereomers. |
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Answer» The main DIFFERENCE between L and D ISOMERS is in the position of –OH GROUP in the penultimate carbon atom. In D isomer, the OH- group of the penultimate carbon is positioned on the right side WHEREAS, in L isomer, the OH- group of the penultimate carbon is positioned on the left side. |
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| 32. |
Which does not equal to 1 mole of nitrogen gas |
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Answer» Answer: HOPE it helps u !! |
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| 33. |
Ohc6h5ch2oh reaction with hcl |
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Answer» 2OHC6H5CH2OH + CUO → 2C6H5CHO + CU + 3H2O Explanation: ANSWER FROM CARTOON LOVER ❤️ |
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| 34. |
Calculate the volume of 44 g of Oxygen (O2) at RTP. |
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Answer» Answer: Correct option is B 2.24 L As given, Mole = MOLAR mass mass
= 44 4.4
=0.1 V CO 2
=n×Molar volume=0.1×22.4=2.24 L Hence, the correct option is B Explanation: please give thank and please mark as BRILLIANT |
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| 35. |
Determination of blood glucose level is studied in analytical or biochemistry |
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Answer» The blood glucose analysis is ordered to measure the amount of blood at the time of sample collection. It is USED to detect both HYPERGLYCEMIA and hypoglycemia and via helping the diagnosis of DIABETES. An ideal blood glucose ESTIMATION method should determine only glucose. Explanation: The level of glucose in the blood can be measured by applying a drop of blood to a chemically treated, disposable 'test-strip', which is then inserted into an electronic blood glucose meter. The reaction between the test strip and the blood is detected by the meter and displayed in units of mg/dL or mmol/L |
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| 36. |
Write 2 uses of esters |
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Answer» Answer: Uses of ESTERS Here are some other users of esters: Esters that have FRAGRANT odours are used as a constituent of PERFUMES, essential oils, food flavourings, cosmetics, etc. It is used as an ORGANIC solvent. Natural esters are found in pheromones. hope it help u mark me Branilest |
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| 37. |
Replacement of one H of benzene by -Br group is called |
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Answer» The HYDROGEN atoms can be REPLACED by MANY different SUBSTITUENTS. ... An −NO2 group is called a nitro group |
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| 38. |
How many litres of Co, gas at STP will react with 2.5 moles of KOH exactly to form K2CO3? |
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Answer» GIVEN:- KOH= 2.5moles CO2? KOH+CO2 = K2CO3+H2O 2:1 2.5moles 1.25moles moles = V(L)/22.4 = V(L) = moles×22.4 = 1.25×22.4 = 28litre
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| 39. |
Balance the given equation :-Na3PO4 + CaCl2 = NaCl + Ca3(PO4)3 |
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Answer» ━━━━━━━━━━━━━━━━━━ |
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| 40. |
What is the relationship between the reactivity of plastic and element position in the periodic table?Pleaseee answer |
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Answer» Answer: CHEMICAL Reactivity decrease as you go LEFT to right of the periodic table. Chemical Reactivity INCREASES as you go down the group. Explanation: please mark as brainlist answer |
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| 41. |
Similarities between inductive effect and mesomeric effect |
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Answer» 1. Both the inducive and mesomeric effects exists in some COMPLEX molecules. |
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| 42. |
Thousands of amino acids polymerize to form |
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Answer» why so SERIOUS..!!..!!..!!..!!..!!..!!..!! |
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| 43. |
What is the common name for the Group of Element C and F? |
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| 44. |
Rosenmund reduction equation |
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Answer» Explanation: Make my answer as BRAINLIEST |
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| 45. |
Maya’s aunt was visiting her house after long time. Maya’s mother frieda lot of snacks for her aunt. Suddenly she came to know that her aunt has postponed her plan for tomorrow. Maya’s mother got worried to know this. She thought that fried food will be spoiled. Maya help her mother to preserve the food. i)What happens when food materials containing fats and oil left for long time? List two observable changes. ii) Write any 2 methods that might be suggested by Maya for preserving fried food? iii) What are antioxidants? |
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Answer» hi Explanation: cfrsssryi966fgjop0jjkopurrr36uifvjlohduudog |
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| 46. |
3,3 diethylpentane prefix nameplz answer. |
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Answer» Primary- DI Secondary- Ethyl Explanation: Prefix are of 2 TYPES- 1. Primary Prefix- LIKE cyclo, bicyclo or like di, tri, tetra 2. Secondary Prefix- Just before root word, like Fluro, Chloro, DIAZO, nitroso etc |
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| 47. |
A first order filter function is given by H(s)=1/(s + 1). Applying the Impulse invariance method to transform H(s) into H(z) gives:Select one:a. H(z)=1/( 1 - z^-1)b. H(z)=1/( 1 - 0.37z^-1)c. H(z)=1/(z - 1)d. H(z)=1/( 1 + 0.37z^-1) |
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Answer» okokokokkkkkkkkkkkkkkkkkkfnkjfngjsn4JBI2Hffnj kjwrni3rnijr9j23rij32jrrj23jijindn1n3i3i 1j9jn3ki1j0wekmkndknqpweo1ik Explanation: MQ RM NQN rnkejrikjfwkejmrjm2ktjfijkndfknfffffwknknm qkrnknknrknrrmr N krnkrknrknknfjntkfknwkfnkwnrnrnjnnfmkkqnkdnaskfjqewe |
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| 48. |
3,3 diethylpentane prefix name |
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Answer» okkkkkkkkkkkkkkkkkkkkkkkkkkkkk Explanation: |
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| 49. |
If a substance melts at 75 degrees Celsius then what is its freezing point |
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Answer» melting point : the temperature at which a SOLID TURNS into a liquid freezing point: the temperature at which a liquid turns into a solid |
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