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 satured solution

Answer» \bold{Hey \: mate \: here \: is \:your \: ANSWER}

A SATURATED SOLUTION is a solution which cannot DISSOLVE more solute at a give PARTICULAR temperature.

\large{\red{\boxed{\mathbb{HOPE \:IT \:HELPS}}}}

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2.

Ethane with the molecular formula C2H6 has how many covalent bond?

Answer»

it has SINGLE COVALENT BOND because it is under ALKANES GROUP

3.

Name all the positional isomers of hexane??

Answer»

"The five ISOMERS of HEXANE are: hexane, 2-methylpentane, 3-methylpentane, 2,2-dimethylbutane, and 2,3-dimethylbutane. They are CONSTITUTIONAL isomers because they each contain exactly the same NUMBER and type of ATOMS, in this case, six carbons and 14 hydrogens and no other atoms.

4.

Give iupac name of (co(nh3)6)cl3

Answer»

hexaammien COBALT (III) CHLORIDE

5.

What type of semiconductor is formed when si doped with as?

Answer»

When SI is doped with As, FOUR electron of As forms COVALENT BOND with the four electrons of Si while one electron remains free for conduction. N- type of semiconductor is denoted by positive ION and free electron. Therefore, n-type of semiconductor is formed when Si is doped with As or any other pentavalent atom


hope it's help you. .....❤✌❤☺❤

6.

match the following 1 butter,2 face cream 3 milk of magnesia 4 sopnge 5 Automobile exhaust with column A foam B aerosol C Gel D emulsion E sol

Answer»

........................

7.

Ziner breakdown voltage occurs in a semiconductor diode when

Answer»

Ziner breakdown voltage occurs in a SEMICONDUCTOR DIODE when this is the ANS

8.

Enlist 20 common metals uses. (common metals uses only please). Please answer fast

Answer»

If U wanna name of metals only .. FOLLOWING is the ans ..

Na . Mg .Al .si.p. sc.ti cr. MN .Ni. FE .co zn. K .ca.Bi . Rb li.Be ...Sb As...


Hope it will help u .


Name harry



9.

an aqueous solution of the salt ammonium chloride is acidic in nature while an aqueous solution of sodium chloride is neutral.please give reason fast...

Answer» AMMONIUM chloride is a salt formed by NEUTRALIZATION of weak base and strong acid where as NaCl is found by neutralization of a strong base and strong acid both acid and bases are COMPLETELY ASSOCIATED in an aqueous solution and hence the solution is neutral
10.

Which Hyberidisation in Banzene

Answer»

Hey There! Carbon atoms in the benzene ring have a trigonal planar GEOMETRY around them since the carry bonds with three other groups and therefore, the HYBRIDIZATION is SP2 . This hybridization is a must to achieve the BOND angle 120∘ which is FOUND in benzene rings.




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11.

What would be the IUPAC name of the following??

Answer»

IUPAC
name of the COMPOUND is pentyne


hope it HELPS you

12.

Name the following:-CH3-CH2-COOHclass 10{carbon and its compounds}

Answer»

Its IUPAC NAME is PROPANOIC ACID

13.

The geometry of carbonium ion is

Answer»

The GEOMETRY of carboniun ION is PLANAR

14.

What type of compound us ch3cooh

Answer»

it is an ORGANIC COMPOUND

15.

The hydroxide ion concentration of a solution is 1.0 x 10 ^-8. What is the pH of thesolution?

Answer» HII mate

CONCENTRATION of oh-=10^-8
so poh. = 8

but PH +poh =14

ph. =14-8

ph. =6
16.

To determine the geletinization temperature range for given starch sample

Answer»

Starch GELATINIZATION is a process of breaking down the intermolecular bonds of starchmolecules in the presence of water and heat, allowing the hydrogen bonding sites (the hydroxyl hydrogen and oxygen) to engage more water. This irreversibly dissolves the starch granule in water. Water acts as aplasticizer. Three main processes happen to the starch granule: granule swelling, crystal or DOUBLE helical melting, and amylose leaching.

During heating, water is first absorbed in the amorphous space of starch, which leads to a swelling phenomenon.[1]Water then enters VIA amorphous regions the tightly bound areas of double helicalstructures of amylopectin. At ambient temperatures these CRYSTALLINE regions do not allow water to enter. Heat causes such regions to become diffuse, the amylose chains begin to dissolve, to separate into anamorphous form and the number and size of crystalline regions decreases. Under the microscope in polarized light starch loses its birefringence and its extinction cross. [2]Penetration of water thus increases the randomness in the starch granule structure, and causes swelling, eventually amylose molecules leach into the surrounding water and the granule structure disintegrates.

17.

Transition metal show strong tendency to form complexes why

Answer»

Because it have VARIABLE OXIDATION NUMBER

18.

PLEASE SOLVE OUT 4 Questions.........

Answer»

solution:

6) Law of conservation of Mass - It states that mass is CONSERVED in any REACTION.

Mass of reactants = mass of products

Example:-

C + O₂ = CO₂

mass of carbon = 12u

mass of oxygen = 16u

In a reaction,

reactants, 12 u  + 2×16 u = 44u

products = 12 u  + 2×16 u = 44u

Thus mass of reactant = mass of product

Law of constant propotion:- it says that,  a chemical molecule will always contains the same elements in the same proportion.

Example:- water MOLECULES always contain Hydrogen and oxygen in 1:2.

7) Dalton's atomic theory:- He syas that, all elements are made up of small indivisble particles called atoms.

All atoms of the same elemnts are identical in all respects.

⊕ Limitation of dalton's atomic theory:-

1. Atoms are devisible [electron,proton and neutron]

2.All atoms are not identicals, like isotpes of carbon have diffrent mass[C¹²,C¹⁴]

8. a)Atoms:- Atom is the smallest PARTICLE on any element [while atoms furthuer can be devided in electron,proton and neutron].

b) Molecule:- Molecule is made up of More than two atoms of diffrent elemnts or same.

like- H₂ ,O₂, H₂SO₄ etc.

C) Atomic mass:- sum of Mass of total protons and neutrons is called atomic mass.

9.a) H₂O

2(1) + 16 = 18g/mol

b) H₂SO₄

2(1) + 32 + 4(16) = 98g/mol

c) HNO₃

1 + 14 + 2(16) = 47g/mol

______________________

Amrit______

19.

For which of the following substance is not zero

Answer»

Is there are any OPTIONS for this QUESTION?

20.

How many atoms in 1 mole of CO2?

Answer» 1 MOLE of CO2 CONTAINS 6.022 × 10^23 ATOMS.
21.

Write the chemical formula of carbon chloride

Answer» CARBON tetrachloride

CCl4
22.

Fossil fuels are present in limited quantity

Answer»

The visualisation below presents the FOSSIL fuel CONSUMPTION mix across INDIVIDUAL countries ..... pre-industrial temperatures, we can emit only a limited AMOUNT of greenhouse GASES.

23.

Write any 2 uses of Washing Soda

Answer» HEY MATE!

⭐IT IS USED IN THE MANUFACTURE OF SOAP AND GLASS⭐

⭐IT IS USED TO REMOVE THE PERMANENT HARDNESS OF WATER⭐

_____________⚡I HOPE IT HELPS YOU ⚡______________
24.

The addition of solid sodium carbonate to pure water causes

Answer»

When U put sodium carbonate in water it produces 2 sodium ION and 1 carbonate ion

25.

X + metal gives you y + carbon dioxide

Answer»

CARBON and OXYGEN MAYBE..!


26.

How can we prepare washing soda from baking powder?

Answer»

When BAKING SODA is heated, sodium carbonate, water and CO2 are produced. Sodium carbonate obtained is DISSOLVED in water and CRYSTALS of WASHING soda are obtained by crystallization.

27.

What is a the molecular formula for resultant osmotic pressure

Answer» EQUATION for osmotic PRESSURE(π) π=MRT. Where: M is the molar CONCENTRATION of dissolved species (units of mol/L). R is the ideal gas CONSTANT (0.08206 L atm mol-1 K-1, or other VALUES depending on thepressure units).
28.

What happen when an acid reacts with a matel oxide]

Answer»

When an acid REACTS with metal OXIDE it PRODUCES salt and liberates hydrogen GAS.

29.

Would you be able to check if water is hard by using a detergent

Answer»

Heya
yes we can check because detergent forms lather EVEN with HARD water where as SOAP does not FORM lather.soap only gives out scum.
hope it HELPS

30.

Heyguys!!↓↓↓need helpppp↓↓↓How would you bring the following conversion?Name the process and write the reaction involved.(a) Propanol and propanoic acid∴∴Need a good answer, silly answer will be deleted∴∴

Answer» 2. PROPANOL to Propanoic ACID:

This conversion is TERMED as oxidation reaction. In this propanol is oxidizes to propanoic acid in presence of CrO3.


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31.

Using alligation method write the method of preparation of weak iodine solution from strong iodine solution

Answer»

Alligation METHOD of preparation of weak iodine solution from strong iodine solution

You need to have the following reagents and chemicals

1. Potassium iodide: 10 g

2. Distilled water: 100 ml

3. Iodine crystals: 5 g.

Preparation: A. Dissolve 10 g potassium iodide in 100 ml of distilled water. B. Slowly add 5 g iodine crystals, while shaking vigorously. C. Filter and store in a tightly stoppered brown bottle to prevent the solution prepared from being DECOMPOSED with light.

This solution has the name of Lugol's iodine solution.

32.

The simplest alkane which can exhibit optical isomerism is

Answer» METHANE can EXHIBIT OPTICAL ISOMERISM
33.

Chemistry question paper with key answer

Answer» SEARCH in GOOGLE and DOWNLOAD the PDF.
34.

Chlorin is less reactive in chlorobenzen give reseon

Answer»

In case of chloro benzene, if it loses chlorine it will GIVE C6H5 ion which is very unstable so it will not tend to lose Cl HENCE it is not reactive :) In case of CHLORAL benzene,chlorine is directly at tached to the hybridised carbon of the RING. Chlorine is deactivating and directing.

35.

Calculate number of moles in 17 grams of AgNO3

Answer»

he ATOMIC weight of AgNO3 is 169.87 g/mol. SIMPLY DIVIDE the NUMBER of grams by the molar mass

                       17/169.87=0.10007

36.

How to find electronegativity of a different Compounds

Answer»

There is no electronegativity of compound. There is electronegativity of a ELEMENT and orbital electronegativity, only. Compounds are USUALLY neutral.

Well generally electronegativity is more of something that you THINK of in relation to an ATOM. You can look up charts and periodic tables that have atomic electronegativity listed.

For compounds, if the atoms that are bonded together have different electronegativites, then you can determine how polar a particular bond is by finding the difference in the bonded atoms’ ELECTRONEGATIVITIES.


37.

Relation between gas compressibility factor and quality of natural gas

Answer»

COMPRESSIBILITY FACTOR =pv/nrt

It's ALSO equal to ratio = molar volume of Real GAS/molar volume of IDEAL gas

So Z(compressibility factor)=V(Real gas)/V(ideal gas)

38.

Candela is SI unit of

Answer» HEY mate here is your answer
candela is SI UNIT of LUMINOUS intensity
hope it helps you
39.

What are the different contributions of Chemistry in the following fields:A. MedicineB. NeurologyC. PaleontologyD. GeologyE. PhysicsF. ElectronicsG. MeteorologyH. MetallurgyI. EngineeringJ. ArcheologyK. EcologyL. AgricultureM. BotanyN. BiologyO. BiochemistryP. PharmacologyQ. Toxicology

Answer»
hey
here \: is \: ur \: answer


↪↪Medicine ↩↩


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40.

Similarities between mandeleevs and modern periodic table

Answer»

Both has groups and periods IE VERTICAL columns are groups and HORIZONTAL rows are periods

41.

Equivalent mass of crystalline oxalic acid

Answer»

The MASS of one equivalent of the DIHYDRATE would be HALF that, or 63 g/mole, not because it is a dihydrate, but because it is diprotic. ... Oxalic acid, H2C2O4*2H2O (molar mass = 126.07 g/mol) is oftenused as a PRIMARY standard for the standardization of a NaOHsolution.

42.

Vhow many atoms are present in 10.0 grams aluminum chloride?

Answer»

Al2Cl3 is the FORMULA for ALUMINIUM chloride.
1 mole of any substance CONTAIN 6.022*10^23.
molar MASS of aluminium chloride is 160.5
number of atoms present = 6.022*10^23 ×give mass÷molar mass.
= 3.75×10^22.

43.

Weight of solute present in 500ml 0.2 n- h2so4 solution is

Answer»

Normality=W/GEW *1000/V. 0.2=W/49 *1000/500 W=0.2*49/2=4.9gm GEw of H2SO4=Gmw/basicity.
=98/2
=49

44.

H2 O2 is always stored in black bottles becauseA) it is highly unstable B) its enthalpy of decomposition is high C) it undergoes auto oxidation on prolonged standing D) none of these

Answer»

It's ENTHALPY of DECOMPOSITION is too HIGH

45.

Polychlorinated dibenzodioxins reaction with chemical formula

Answer»

...,.,.,.,.........,.,.,.,.,.,.,.,.,..,.,.,.,.,..,.,.,..,.,..,.,..,.,.,..,,.,..,..,.,..,..,.,.,.,..,,..,.,.,..,.,.,..,.,.,.....,..,.,..,.,,.., NM , , ,. , , ,.

46.

What is the difference between combustion and rusting?

Answer»

In rushting METAL get eaten AWAY and COMBINE TION APRODUCT can burn

47.

Consider the change in oxidation state of Bromine corresponding to different emf values as shown in the diagram below:

Answer»

This your question lacks IMPORTANT information but I would like to give you some highlight about it.

This question is testing the idea is electrochemistry as well as REDOX REACTIONS and in some books it is referred to as competition processes.

So it requires you to consider the change in oxidation state of Bromine CORRESPONDING to different electromotive force, emf values as per the diagram.

So all you need to do is to calculate E°cell corresponding to each compound under going DISPROPORTIONATION reaction.

If the reaction for which E°cell comes out +ve is spontaneous.

48.

Most Famous equation of chemistry ????

Answer»

Shodingers WAVE EQUATION

49.

In the reaction A+B-C+D,the concentrations of A,B,C and D are 0.5,0.8,0.4 and 1 respectively at equilibrium. The equilibrium constant is?

Answer» K=[C][D]/[A][D] =0.4*1/0.5*0.8 =0.4/0.4=1
50.

The de Brogli wavelenght of a tennis ball of mass60g moving with a velocity of 10metres per second is aaproximately

Answer»

Wavelength =h/mv h=6.625*10(-34) M2.Kg/sec. mass=60*10(-3)kg. Velocity =10metere/sec. wavelength =6.625*10(-34) /60*10(-3)*10 =1.1041*10(-33) METERS