Explore topic-wise InterviewSolutions in Current Affairs.

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 product form when r2c=ch-ch2cooh is treated with nahg and naoh?

Answer»

Hola...ACETALDOL is FORMED as a result of alcohol condensation of two or more of ACETADEHYDE .follow me ❤️

2.

State characteristics of matter demonstrated by compressibility​

Answer»

Explanation:solids are COMPLETELY imcompressible .LIQUIDS are almost imcompressible. gases are HIGHLY COMPRESSIBLE .

3.

State characteristics of matter demonstrated by diffusion​

Answer»

ATE ANSWER ⏬Diffusion:Diffusion is nothing but the movement of molecules from it's higher concentration to lower concentration. (or)The spreading out and mixing of a one SUBSTANCE into ANOTHER substance due to the motion of its PARTICLES is CALLED diffusion.HOPE THIS HELPS YOU ☺️PLEASE FOLLOW ME ✌️MARK ME AS BRAINLIST

4.

State characteristics of matter demonstrated by rigidity​

Answer» RIGIDITY is the HARDNESS or STRONG is the MATTER
5.

Differentiate the structure of alpha helix and beta pleated sheet

Answer» TION:HEY DUDE THE ANSWER IS THERE IN THE PIC .
6.

Differnce between total precipitable water and precipitation

Answer»

Explanation:ONE MEASURE of ATMOSPHERIC moisture is called “precipitable water”. Precipitation is any liquid or FROZEN water that forms in the atmosphere and falls back to the Earth. It comes in many forms, like rain, sleet, and SNOW.

7.

What is the effect of partial pressure on boiling point of refrigerent?

Answer»

er elevations, where the ATMOSPHERIC pressure is MUCH LOWER, the boiling point is also lower

8.

What is displacement reaction how is this property utilised to choose containers for food stuff with acid components?

Answer»

the reaction in which more reactive METAL displaces LESS reactive metal is CALLED DISPLACEMENT reaction in the FORM of a aqua solution

9.

What happen when we put a copper rod and a aluminium rod in salt solution?

Answer»

when we put a copper ROD and ALUMINIUM rod in salt solution then the reaction takes place CU REACT with aluminium chloride to form of CU CL2 + al

10.

What happens when dilute hydrochloric qcid is added on zinnc granules in a test tube?Give equation?

Answer» TION:ZINC CHLORIDE is formed with the LIBERATION of hydrogen gas
11.

What happens when iron nails are placed in copper sulphate solution?Give the equation?

Answer»

When iron nails are placed in COPPER SULPHATE SOLUTION there is a brown substance is DEPOSITED over iron nails. Explanation:This is because the reaction of iron and copper sulphate forms the green-coloured substance ferrous sulphate and copper, which is brown in COLOUR and is deposited over the iron nails.

12.

What happens when we supply heat energy to water till.It changes ites state?

Answer»

tion:It is consumed in fission of MOLECULES to CHANGE state . It is CALLED as latent heat of fission .

13.

What do you understand by chemical formula of a compound? What is its significance?

Answer»

A CHEMICAL formula tell us the NUMBER of ATOMS of each ELEMENT in any compound.Hope it helps you

14.

What happens when aluminium reacts with dilute hydrochloric acid potassium oxide is dissolved in water sodium hydroxide reacts with sulpheric acid completely give equation for the chemical equation?

Answer»

The FIRST ONE is a metal+acid reactionSecond is a metal+water reactionThird is a NEUTRALISATION REACTION

15.

What happens on adding salt to the water in which eggs are boiled why?

Answer»

The most common REASON to add salt to water when hard boiling an egg is to the INCREASE the temperature of the water for better cooking. EVIDENCE also suggests that SALTED water PREVENTS an egg from cracking. because it cooks at a slightly higher temperature.

16.

What furnace is a type of metallurgical furnace used for smelting to produce industrial metals,generally pig iron, but also others such as lead or copper?

Answer»

furnace is a type of metallurgical furnace used for smelting to produce industrial metals, generally pig iron, but also others such as lead or copper.Blast refers to the combustion air being "forced" or supplied above atmospheric pressure.In a blast furnace, fuel (coke), ores, and flux (limestone) are continuously supplied through the top of the furnace, while a hot blast of air (sometimes with oxygen enrichment) is blown into the lower SECTION of the furnace through a series of pipes called tuyeres, so that the chemical reactions TAKE place throughout the furnace as the material falls downward. The END products are usually molten metal and slag phases tapped from the bottom, and waste gases (flue gas) exiting from the top of the furnace. The downward flow of the ore and flux in contact with an upflow of hot, carbon monoxide-rich combustion gases is a COUNTERCURRENT exchange and chemical reaction process.

17.

What are the chemical change that take place during the burning of a candle?

Answer»

tion:The CHEMICAL CHANGE that occurs during the burning of candle is MELTING of candle due to HEAT

18.

Does sugar solution is a substance​

Answer»

A sugar solution is a COMPOUND but STILL it is not a pure SUBSTANCE

19.

Do you know the first 10 elements of a periodic table??​

Answer»

hydrogen, helium, lithium, beryllium,BORON, carbon, nitrogen, OXYGEN,FLORIN,neon

20.

Difference between oxidative photophosphorylation and photophosphorylation

Answer»

Hola...in Eukaryotic oxidative PHOSPHORYLATION OCCURS in MITOCHONDRIA CROSS POLLINATION occur in chloroplast oxidative phosphorylation involved in the production of Oxygen and H2O with electron donated by N A D H and FADH2 and acre equal value in the light of Darkness

21.

Difference between linoleic acid and conjugated linoleic acid

Answer»

glufykdtjdhldykfykfisyostifuldtjstjemgskgdti

22.

Difference between avogadro's number and avogadro's constant

Answer»

.... mark this ANSWER as BRAIN list..... AVOGADRO's number: number of ATOMS in one gram of Hydrogen. Avogadro's CONSTANT: number of atoms in 12 grams of Carbon-12. Both lead to approximately the same number, (6.022E23) but the definitions are different. ... Avogadro's number is just a number, so it's unitless.

23.

arrange the following descending order of force of attraction water salt oxygen also state the reason​

Answer»

ter,Oxygenbecause solid has most POWERFUL intermolecular FORCE of attraction and GAS has the leasti hope it HELPS please mark it as brainliest

24.

to make a saturated solution 36g of sodium chloride is dissolved in 100g of water at 293k. find its concentration at this temperature​

Answer» MASS of SOLUTE =36g=sodium chlorideMass of solvent=100g=waterMass of solution=100+36=136gConcentration of solution=Mass of solute÷Mass of solution×10036g÷136g×100=26.47%
25.

What is (i) magnesium dioxide (ii) nitric acid (iii) sulphuric acid ​

Answer» 1) MG + O2 --- MgO2) N2O3 3) SO4
26.

To make a saturated solution 36g of sodium chloride is dissolved in 100g of water at 293 k . Find the concentration at this temperature

Answer» MASS of solute=36gMass of solvent=100gMass of SOLUTION =100+36=136gConcentration of solution=Mass of solute÷Mass of solution ×100=36g÷136×100=26.47%
27.

The unsaturated hydroarbon which contain one or more double bonds are called

Answer»

alkenes and alkynesExplanation:if HYDROCARBON has two double bonds it is Alkene for example ethene ( C2H4) if it has THREE double bonds it is ALKYNE for example ethyne( C2H2)

28.

The unicellular algae used to supply and regulate the oxygen in the space programmes is:

Answer»

I have the the INFORMATION of FOUR UNICELLULAR . They are chlamdomanas, codillm ,CHLORELLA, SPIROGYRA

29.

Which sample contains the largestnumber of atoms​

Answer» RIGHT ANSWER is (1)FOLLOW ME GUYS
30.

Why reducing nature across the period increases

Answer»

dency to gain ELECTRONS increases on moving across a period due to an increase in the NUCLEAR CHARGE and DECREASE in the atomic SIZE. Hence, the non-metallic character increases across a period.

31.

The temperature at which ice will begin to separate from a mixture of 20 mass percent of glycol in water is

Answer»

i THINK 20 .if it is RIGHT then LIKE it

32.

The time required to decompose a so2 cl2 to half of its initial amount in 60 minutes and the decomposition is a first order reaction that calculate the rate constant of a reaction

Answer»

jai Mahakal ❤️▶️time REQUIRED to decompose a SO2 cl2 to half of it INITIAL AMOUNT of 60 MINUTE.

33.

Write your observation. When hard water is added to beaker containning soap solution. Explain your answer also. ​

Answer»

hard water will not form LATHER with soapbecause it CONTAINS MANY presence of bicarbonates , chlorides or SULPHATES of CALCIUM or magnesium

34.

Q:-12 In dark, which of the following reacts with hydrogen (a) Br?(6) F₂(c) hv(d) aleQ:-13 Which of the following represents clear electropositiveproperties(a) F(b) ci(c) Br✓ di​

Answer»

q.12(a)Brq.13(b) ciExplanation: 1 - in DARK berelyium is the HIGHEST reacting agent with hydrogen2 - caesium represents clear electopositive PROPERTIES

35.

Why oxidising nature decreases across the period

Answer»

Oxidising power is tendency to ACCEPT the electron so as we move along a period from left to right size DECREASES(as electron accommodate on same shell and no. ... In the periodic table, from left to right in a period, the ATOMIC volume FIRST decreases and then INCREASES.

36.

Q:-2 Enzymes are a) Microorganismb) Proteinc) Inorganic compoundd) noneQ:-3 Alum purifies muddy water by EUa) Dialysis4b) Electrophoresis) Coagulationd) Forming emulsio1​

Answer» TION:q2-proteinsq3-coagulation
37.

What is the solution to find mass by volune %??? ​

Answer» TION:Mass of SOLUTE by the volume of SOLUTION × 100
38.

Sulphur dioxide gas forms sulphurus acid with water. ( true/false)​

Answer» TRUE as WATER COMBINES with it
39.

which of the following covalent bonds has the greatest polarity among Na-I S-O C-O Na-Br​

Answer» NA-I has the GREATEST POLARITY because, I is an electronegative element and comparitively SMALL and Na is having a large size.covalent nature is LESS among them.
40.

How to find limiting reagent in a equation explain with equation ​

Answer»

the reactions in which more than ONE REACTANT are reacting and if they are not present in same molar RATIO as a balance equation required than one has to find out liming reagent.Explanation: let's ex. pbs +4 h2o2 form pbso4 +h2o THEREFORE initial Mole of pbs is 5 mol and 4 h2o2 is 18 mol so find to limiting reagent this mol divide by its coifficient so when you give any one LESS mol so if is limiting reagent . 5 /1=5 and 18/4=4.5 so 4 h2o2 is limiting reagent

41.

Explain about limiting reagent briefly. those who explain briefly i will follow them​

Answer»

The limiting reagent is the one that is TOTALLY consumed; it limits the reaction from continuing because there is none left to REACT with the in-excess reactant. There are two WAYS to determine the limiting reagent. One METHOD is to find and compare the mole RATIO of the reactants used in the reaction (approach 1)Explanation:

42.

Suspension either shows tyndall effect or it does not show it. Explain the reasons for both the observations. ​

Answer»

1) when suspension remains in bulk it would show Tyndall EFFECT as the particles are large ENOUGH to reflect the light beam and make its path visible 2) when suspended particles settle down DUE to heavy WEIGHT , the LIQUID above becomes less dense to reflect the ray THUS SUSPENSION MAY OR MAY NOT SHOW TYNDALL EFFECT

43.

The process of changing the molecular structure of the straight run gasoline is call for

Answer»

The answer is cracking.Explanation:The fractional distillation of crude OIL PRODUCES straight-run gasoline. The amount of gasoline yield can be increased by higher and LOWER gasoline fractions into hydrocarbons. The processes used to convert the molecular structure of straight-run gasoline is called cracking. In this process, the catalysts are added to break the C-C bonds of the high fractions in ORDER to convert them into lower fractions of ALKANES or alkenes. Thus, the alkanes are mixed with straight-run gasoline to increases its production on a commercial scale.

44.

The ph of solution is increased from 3 to 6. Its h+ ion concentration will be

Answer»

hplus ION CONCENTRATION decreasesExplanation:NORMAL PH 7

45.

The ph of a salt used to make crispy pakoras is 14 . Identify the salt and write a chemical equation for its formation .List its two uses

Answer»

sodium BICARBONATE SALT is USED in MAKING pakoras crispy

46.

The mole fraction of water in hcl solution is 0.78 calculate the molality of the solution

Answer»

e... I am GIVING you a FORMULA for thishere it is,MOLE fraction = m/(m+55.55)here 'm' is MOLALITY

47.

The melting point and solubility in water of amino acids are generally higher than

Answer»

Amino acids are DIPOLAR in NATURE and have strong dipolar intraction so it has HIGHER than all the FLUIDS

48.

How to study concentration terms​

Answer» TWO POINTS of FULL 100 % concentration on study 1 Smart WORK not work hard2 Consistancy is more important in study i hope helpful for you please follow me
49.

Type of bonding between S and Cl​

Answer»

the BONDING between sulpuhur and CHLORINE is COVALENT BOND

50.

Why basic nature of oxide increases down the group explain

Answer»

The ABILITY of an atom “to accept an electron” decreases down the group therefore increases the tendency of the elements to be GOOD Lewis bases (recall a Lewis BASE is an electron-pair donor). Thus the DECREASE in electron affinity down the group means the elements readily DONATE an electron rather than accept them.