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.

How does the dielectric constant affect sn1 and sn2 reactions?

Answer»

In SN1 REACTION, carbocation is formed. So a polar solvent is NECESSARY to stabilize the INTERMEDIATE. The MEDIUM with high dielectric constant STABILIZES the carbocation more. SN2 reaction doesn't involve charges.

2.

State the products of the reaction"when steam is passed over red hot iron"

Answer»

When STEAM is passed on red-hot iron,
2Fe(s) + 3H2O(g) ———> Fe2O3 + 3H2(g)
Fe2O3 is FERROUS oxide.
Colour :- (Green).

Hope this will help you.

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3.

❤❤HEYA GUYS!!! PLEASE ANSWER THIS QUESTION...❤❤✔Calculate the mass of oxygen which contains same number of atoms as are present in 4.6g of sodium. ( Atomic Mass of Na= 23 and O = 16 )

Answer»

I HOPE that you UNDERSTAND

4.

Top 10 largest gdp in the world

Answer» AMERICA, CHINA,FRANCE, Japan, Russia,India, England, Australia, MEXICO and Newjealand
5.

How do you determine the charge on the cathode rays

Answer»

The ELECTRODE CONNECTED to the NEGATIVE TERMINAL of of battery is called cathode

Hope it is useful

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6.

Which has more number of atoms 100 gram of sodium or hundred gram of iron

Answer»

ANSWER:

none.

Explanation:

they have equal number of atoms SINCE masses are the same

7.

Give one example each of displacement,decompostion and combination reaction with explanation

Answer»

the answer is the THING that no one knows just the people ask no one REPLY so dont ask the QUESTIONS


8.

Find out the question solution please

Answer» HII mate✔✔

=======

here is ur ANSWER ^↓^

=============

Q 70

option (2) is correct √√√

____________

Q 71

option (3) is correct √√√

============

⭐hope it helps uh⭐


✨___☺___✨


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9.

Which is a device to see hidden corners

Answer»

Periscope is a DEVICE to see HIDDEN corners.

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10.

What is orbit in chemistry

Answer» ORBITAL, in chemistry and physics, a MATHEMATICAL expression, called a wave function, that describes properties characteristic of no more than two ELECTRONS in the VICINITY of an atomic NUCLEUS or of a system of nuclei as in a molecule. An orbital often is depicted as a three-dimensional region within which there is a 95 percent probability of finding the electrons.

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11.

Cobalt ferrites-synthesis and characterization by using different molecular weights of peg as chelating agent

Answer»

you KNOW i am not a CHEMISTRY STUDENT so i no know

12.

Extracting pb from pbs is a which process froth flotation or polling??

Answer»

Extraction of PB from PBS us DONE by froath floatation

13.

What is thermodynamic process ? In short and better understanding

Answer»

The PROCESS in which HEAT is PRODUCED is a THERMODYNAMIC process

14.

How would u convert chlorobenzene into DDT?

Answer»

I HOPE this can SURELY HELP you

15.

Why ethane has 7 covalent bonds

Answer»

The formula of ETHANE is C2H6. Where C-C(1 COVALENT bond)  and C-H( 6 covalent bonds ) and covalent bonds re formed between two non-metallic elements. If we draw the structure of ethane we ll find that they re SHARING ELECTRON and there re seven cobalent bonds.

hope it helps.....

16.

How would you distinguish primary secondary and tertiary amines with hinsberg reaction?

Answer»

Answer is in following..



☞The Hinsberg TEST, which candistinguish primary, secondary, and TERTIARY amines, is BASED upon sulfonamide formation.

☞If the sulfonamide that forms dissolves in aqueous sodium hydroxide SOLUTION, it is a primary AMINE.

☞If the sulfonamide is insoluble in aqueous sodium hydroxide, it is a secondary amine.




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17.

How to determine the empirical formula and molecular formula?

Answer»

for EMPIRICAL formula add all the quantity of ELEMENTS and for molecular formula MULTIPLY all the molecular MASSES

18.

Equal volume of all gases,atsame temperature and pressure contains equal no. Of molecules. This is according to

Answer»

It is ACCORDING to AVOGADRO's LAW

19.

58.5gram nacl in unit cell

Answer»

So , the molecular MASS of NACL is 23 + 35.5 =58.5 . NaCl OCCUPIES fcc structure i.e 4 atoms will constitute 1 unit cell.


20.

Explain benzenoid and non benzenoid

Answer»

Benzenoid are those compounds which are DERIVED from benzene THUS SHOW complete delocalisation in the ring..non benzenoid are not derived from benzene ring but shows proper CONJUGATION nd follows huckel rule.

21.

Why do metal cannot react with its own salts

Answer»

Hey mate here is your answer》》

In a displacement reaction, a more reactive metal can DISPLACE a less reactive metal from its salt solution. The elements POTASSIUM, SODIUM, lithium and calcium are very reactive and they react with cold water to produce HYDROXIDES and hydrogen GAS. That is why each metal react to its own salt.

Hope this answer will help you..《《

22.

The rusting of iron nail is a ........a. combination reactionb. displacement reactionc. decomposition reactiond. double decomposition reaction

Answer» COMBINATION REACTION
23.

Fr223 isotope has a life of only 21 minutes explain why and what

Answer» HALF of the half remaining after 22 minutes decay after a further 22 minutes, leaving you with a quarter. Each 22 minutes, you LOSE ANOTHER half.
24.

I need to know background of neutron?

Answer» NEUTRON is PARTICLE of ATOM which is not CARRYING any CHARGE such as +ve or -ve

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25.

How can we obtain ethylene from ethyl bromide

Answer» ALCOHOLIC CAUSTIC POTASH
26.

How many electrons does a carbon atom shate euth other carbon atom in the formation of acetylenr olecule?

Answer»

Each carbon atom in ethane forms four single bonds, one to each of three HYDROGEN atoms and one to the neighboring carbon atom. However, in some organic molecules, a carbon atom sharestwo or three pairs of ELECTRONS with another BONDED atom. If two electron pairs are shared, a double BOND exists.

27.

Give me reactions to differentiate hydration and hydrolysis

Answer»

Hydrolysis: Breaking of a compund using water.

Eg. NaCl + H2O ---> NaOH + HCl


Hydration: Addition of a water molecule to a compound

Eg. Hydration of ethene

..... C2H4 + H2O → CH3CH2OH


-

In both cases, water is required.


But hydration is an electrophilic addition reaction (to an alkene) so there is no splitting/cleavage of the ORIGINAL molecule . It merely involves adding a hydrogen atom and an -OH group to to unsaturated molecule where the C=C bond is located.


In hydrolysis, water is added to cleave/split a larger molecule into two SMALLER molecules , EXAMPLE using a water molecule to break an ester bond , amide bond, GLYCOLYTIC bond ,etc . Example hydrolysis of sucrose to glucose and FRUCTOSE by cleaving the glycolytic bond


Or hydrolysis of ethyl ethanoate an ester into ethanol (an alcohol) and ethanoic acid (a carboxylic acid) by breaking the ester linkage.

28.

Name the products formed when ethane burns in ai. Write the balanced chemical equation

Answer»

The PRODUCTS formed when Ethane burns in AIR with OXYGEN are CARBON doixide , water and carbon monoxide.

the equation is:

chemical equation:

C2H6 + 3O2 = CO2 + CO + 3H2O + Combustion

HOPE THIS HELPS!!!!

29.

Hey guys ans it plspetroleum is a ______and______resource fast

Answer» NON RENEWABLE and COSTLY RESOURCE
30.

Pls answer thispls chemistry

Answer»

Which ONE is your QUESTION

31.

Determination of molarity of kmno4 using oxalic acid by volumetric analydis

Answer»

The volume of kmno4 used. in the titration is CONSIDERED as 17 POINT 1 mlmolarity of kmno4 solution from the CHEMICAL equation. we can notice that 2 moles of kmno4 REACTS with 5 moles of oxalic acid molarity. of kmno4 into volume of kmno4 by molarity of oxalic acid into volume of oxalic.

32.

Define conductivity of substance give si unit how does it vary with temperature copper silicon

Answer»

It is a property of a substance DUE to which it allows heat and electricity to PASS through it. its SI unit is simen per meter (S/m) .
it increases with temp in silicon but decreases in copper with RISE in temp

33.

How will you find the valency of an element

Answer»

The valency of an atom is equal to the NUMBER of electrons in the OUTER shell if that number is FOUR or less. OTHERWISE, the valency is equal to eight minus the number of electrons in the outer shell. Once you know the number of electrons, you can easily calculate the valency.
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34.

Explain different types of formation in which minerals occur

Answer»

Hey mate here is your answer》》

Three main types of formations in which mineral occurs are :

(i) Veins and lodes In igneous and metamorphic rocks MINERALS may occur in the CRACKS, crevices, faults or joints. Smaller occurrences are called veins and larger ones are called lodes.

(ii) Beds or Layers In sedimentary rocks, minerals occur in bed or layers. They are formed as a result of deposition, accumulation and concentration in HORIZONTAL strata, (layers)

(III) Placer Deposits Certain minerals occur as alluvial deposits in SANDS of valley floors and the base of hills as placer deposits.

Hope this answer will help you..《《

35.

Give the iupac name of follow compound

Answer»

The IUPAC NAME of COMPOUND is:
2-Pentene.

36.

Fractional distillation of binary solution type explain

Answer»

Fractional distillation is a powerful WAY of separating two or more miscible liquids. 

The separation is based on the boiling point differences of the components of the mixture, usually LESS than 25 ºC.  

Using a fractionating COLUMN which ALLOWS for repeated simple distillations two or more liquids can be successfully separated.

37.

Four substances formed from organic compounds which we use in our daily

Answer»

There is a vast VARIETY of compounds which we USE in EVERYDAY life but the FOUR of them are GIVEN below:
▪PRINTER INK
▪PLASTIC BAGS
▪SYNTHETIC FIBRES
▪FERTILIZERS

38.

Below this which is the purest water boiled water saltwater distiledwater filtered water

Answer»

BOILED WATER

when we boil water all the GERMS die, and IMPURITIES gets REMOVED.

39.

A mixture of co2 and co2(s)is heated

Answer»

It is SEPARATED to CARBON DIOXIDE SULPHUR

40.

Emax and emin of hydrogen like atom is given, find its atomic number

Answer»

The ATOMIC no. of HYDROGEN in 1

41.

First, it is converted to oxides because it is easier to extract metals from their oxides rather than in their carbonates or sulphides form.it is extracted mainly using 2 processes:- calcination and roasting. calcination: it is the process of heating the concentrated ore at a temperature not sufficient to melt the ore. znco3 ------------->zno + co2

Answer»

What's the QUESTION?

42.

Draw the segment of syndiotactic polyacrylonitrile with 4 monomer units

Answer»

Syndiotactic polyacrylonitrile with 4 monomer units is attached in the word DOCUMENT. So please DOWNLOAD it and see how it goes.

We have the following and I happen if you get to learn more about I think you will be better placed because it is good if you have knowledge about these varieties and what they mean.

Tacticity GENERALLY refers to the regularity of the polymer having the geometric or spatial arrangement of molecules in a polymer CHAIN. in general, in a tactic, the direction is not ordered.

Isotactic, oh the other hand means every molecule is ALIGNED in the same direction.

Syndiotactic also implies that the direction of adjacent molecules alternates.


43.

First ionization enthalpy of be is higher than that of boron

Answer» KEEP in mind the simple rule which is as below.
▪ The groups which show high Ionization potential or enthalpy are GROUP 2,5,8
▪ Be belongs to group 2.
▪The elements BELONGING to group 1 ,3 ,6 SHOWS LOW ionization potential.
▪Boron belongs to group 3.
44.

By which process the heat is transferred in solids liquids and gases

Answer»

CONDUCTION in solids.....conve TION in LIQUIDS mostly and radiation through ANYTHING

45.

How is aniline Obtained from Benzonitrile

Answer»

We have to FIND that how is Aniline obtained from Benzonitrile.

Kindly SEE the attachment. A complete reaction is shown in the attachment.

We have to treat Aniline with SODIUM NITRITE & HCl.

We must treat them at LOW temperatures.

This reaction gives us diazoniumchloride.

The diazoniumchloride reacts with CuCN and gives us Benzonitrile.

46.

What is quantum number give their names

Answer»

It will HELP U.........;)
PRINCIPAL QUANTUM no
AZIMUTHAL quantum no
magnetic quantum no
spin quantum no

47.

Few drop of sodium bicarbonate add on phenopthanile what will happen

Answer» DISPLACEMENT REACTION will HAPPEN.
48.

Ferrimagnetic substance show better magnetism than antiferromagneric substance. Why?

Answer»

The key DIFFERENCE between ferromagnetism and antiferromagnetism is that ferromagnetism can be found in materials having their magnetic domains aligned into the same direction WHEREAS antiferromagnetism can be found in materials having their magnetic domains aligned in opposite directions.


A magnetic DOMAIN or an atomic moment is a region in which the magnetic fields of atoms are grouped TOGETHER and aligned. Ferromagnetic materials are attracted to an EXTERNAL magnetic field and have a net magnetic moment. But antiferromagnetic materials have a zero net magnetic moment



49.

Few drop of sodium bicarbonate add on blue litmus what will happen

Answer»

RED LITMUS paper turns BLUE under BASIC

Sodium bicarbonate is a WEAK base

50.

How to pass chemistry class 12 in easy way ?

Answer»

I am also in 12TH

U can study by determination

Selected chapters

Take a view on which u R studing by ur TEACHERS

Do hard work

If u dont have teacher

Then go for tuisen

Or study online....❤