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.

Nirlipt ka mulshabdh and upsarg ....please

Answer»

argलिप्त मूल शब्दHope it will HELP U frienD✳️✳️✳️✌️✳️✳️✳️✌️✳️✳️✳️

2.

Lower and higher homolofua of alkene containing 4 carbon atoms

Answer»

buteneI HOPE it will HELP you

3.

Magnetic properties of coordination compounds 2

Answer»

es such as N2 and ions such as Na+ and [Fe(CN)6]4− that contain no unpaired electrons are DIAMAGNETIC. Diamagnetic SUBSTANCES have a slight TENDENCY to be repelled by magnetic fields. When an electron in an ATOM or ion is unpaired, the magnetic moment due to its spin makes the entire atom or ion paramagnetic

4.

Does combustion of carbon dioxide in fire extinguisher stop fire

Answer»

ents the chemical REACTIONS involving heat, FUEL, and oxygen (combustion), thus extinguishing thefire. ... In the heat of a fire, it RELEASES a CLOUD of carbon dioxide that smothers the fire. That is, the GAS drives oxygen away from the fire, thus stopping the chemical reaction.

5.

Lanthanide for which +2 anf +3 oxidatiom state is common

Answer»

ur answer.The most STABLE oxidation state of Lanthanides is +3. They also SHOW +2 and +4 oxidation states due to the presence of either HALF FILLED or completely filled or empty 4f sub shell.______________________________________hope it helps you!

6.

Ch3cooc2h5 name and also reason

Answer»

pound CH3COOC2H5  is ethyl ethanoate. The ACID and alchohol from which it is MADE are Ethanoic acid and ETHANOL. C2H5OH + CH3COOH -----> CH3COOC2H5 + H20                ETHANOL          ETHANOIC ACID                  ETHYL ETHANOATE           WATERMARK ME AS BRAINLIEST

7.

If negative charge on oxygen atom increases its electronegativity a)increases b)decreases plz explain with reason

Answer»

perty GAIN electrons by an atom is CALLED ELECTRONEGATIVITY so (a)is the ANSWE

8.

Is NaCl is salt without water of crystallization

Answer» F crystallization refers towater that is established in the crystalline FRAMEWORK of a metal complex or a SALT, which is not DIRECTLY bonded to the metal cation. ... NaCl salt does not contain WATER of crystallization.
9.

Is sulphuric acid is used in gabriel phthalimide?

Answer»

is not USED in the REACTION.

10.

Write the name and molecular formula of the forth member alkane and alkene series

Answer»

c4h12...butene-c4h8

11.

Is it ok to soak smelling shoe in clothes washing powder?

Answer»

it's WRONG OK

12.

What is the Difference between propane and propene on grounds of flame produced?

Answer»

gives a BLUE FLAME while as PROPENE gives yellow flame with SMOKE

13.

Copper sulphate is sublime or not

Answer» ER SULPHATE is not SUBLIME
14.

If we react secondry alcohol with cu at 573 k what will form

Answer» E is FORMED with a SECONDARY ALCOHOL.
15.

Ice, water and steam are three different states but not different substances. Juatify

Answer»

er and stream have the same elements, in it which is Hydrogen & oxygen. therefore they are same substance, but if we TALK about the phase or state. they EXIST in different phases that DEPENDS on the temperature and pressure. thus ICE ---> water if we heat it and water ----> steam it we further heat it

16.

What is refining........

Answer»

g is the process of REDUCING the IMPURITIES in a SUBSTANCE . you can't crude oil into gasoline WITHOUT first refining it......

17.

Write the two methods of preventing rancidity

Answer»

ng ANTIOXIDANTS and by PACKING the FOOD in NITROGEN gas

18.

Identification the cation and anion in a given salts

Answer» ION WOULD be the eta and ANION would be the non metal present in the given SALT
19.

How many electrons can be in the m

Answer»

re 18 ELECTRONS in m SHELL

20.

In branched chain among bromine and methyl which is 1st

Answer» NG to me I THINK BROMINE is the FIRST
21.

Give reason position of hydrogen is contreversial

Answer»

it has been placed at the TOP of ALKALI metals though most of it's PROPERTIES resemble with noble gases

22.

How is heating of wax and heating of ammonium chloride different from each other. Explain?

Answer»

/www.quora.com/How-is-heating-of-sugar-different-from-heating-of-ammonium-chlorideu can SEARCH this LINK...it MAY HELP UUH

23.

2 ml of sodium hydroxide solution is added to a few pieces of granulated zinc metal taken in a test tube a gas evolves which is bubbled through our soap solution before testing . Write the equation of chemical reaction involved and the test to detect the gas . Name the gas which will be evolved when the same metal react with dilute solution of a strong acid

Answer»

ts with NAOH to form a coordination compound called sodium zincate with evolution of H2 gas.When sodium hydroxide is heated with Zinc granules - Sodium Zincate and hydrogen gas is evolved.2NaOH(aq)+Zn(s)→Na2ZnO2(aq)+H2(g)↑When burning SPLINTER is brought near the mouth of the test tube, it burns with a POP SOUND. If Zinc granules react with strong; acids (HCl or H2SO4) then again Hydrogen gas will be evolved.Zn(s)+(DIL)2HCl→ZnCl2+H2↑Zn(s)+(dil)H2SO4→ZnSO4+H2↑hope this will help you.

24.

Which is smaller in size? Li or F and why?

Answer» INE) is SMALLER as atomic RADII decreases and nuclear CHARGE increases ACROSS the period.
25.

an atom of an element has 2 electrons in the outermost M cell state electronic configuration atomic number number of protons valency of this element

Answer» SINCE The atom Has 2 ELECTRONS in its outermost shellElectronic configuration= 2;8;2.Atomic No=12.valency = 2.HOPE IT HELPS U.
26.

What happen if a lighted candle is brought near the mouth of a jar contain carbon dioxide gas

Answer» EXTINGUISHED
27.

Aluminium is highly reactive metal ,yet it used to make untensils for cooking

Answer»

good CONDUCTOR of HEAT ENERGY and also it consists of an protective oxide that PREVENTS it from reaction with other metals

28.

What are alkanes alkenes and alkynes give an example of each

Answer»

pound made up of Hydrogen and carbon only is called HYDROCARBON(Hydrogen+Carbon= Hydrocarbon), e.g . CH4,C2H4,C2H2 etc._____________________✨:- An alkane is a hydrocarbon in which the carbon atoms are connected bt only single covalent bonds. Saturated hydrocarbons are also called alkanes. ✔️The general FORMULA of Alkane is CnH2n+2 .=============================✨:-Alkenes are unsaturated aliphatic hydrocarbons , which CONTAIN ONE double bond . Alkenes are also called olefins(oil Forming).✔️Alkene form a homologous SERIES having the general formula CnH2n.==================↓✨:- Alkynes are unsaturated aliphatic hydrocarbons which contain a triple bond I.e acetylene bond between two carbon atoms .✔️They have general formula CnH2n-2.====================→

29.

why cannot displacement reaction in zinc sulphate and copper sulphate solution takes place on adding copper turnings

Answer» ZINC is more REACTIVE than COPPER. KNaCa MgAlZnFePbHCu
30.

Write any two uses of pyrophoric alloys

Answer»

bulletsto MAKE LIGHTER FLINTS

31.

What is plaster of paris ? how is it obtain from gypsum

Answer» ER SOM POINTS to GET ANS
32.

What is PH of CH3COONa

Answer» ODIUM ethanoate is LOW,it is AROUND 4 to 6.
33.

How would you differentiate between: (a) ethane and ethene. (b) ethene and ethyne.

Answer»

has a CHEMICAL formula of C2H4, whereas ethyne has a chemical formula of C2H2. This is because a double BOND is PRESENT between the carbon atoms in ethene, and a triple bond is present between the carbon atoms in ethyne. ... Ethene is a hydrocarbon which has the formula C 2H 4 or H₂C=CH₂.Ethane formula C2H2Hope it helpsFind the attachment for difference between ethane and ethene

34.

in which of the following pairs, both are acidic salts? A) Na2SO4,K2SO4B) KCL, KNO3C) CH3COONA,K2CO3D) CuSO4,AgNO3

Answer»

OONa, K2CO3 are both ACIDIC SALTS

35.

Name the phenomenon due to which taste and smell of oily food changes when kept for long time open suggest one method to prevent

Answer»

nomenon is CALLED rancidityit can be PREVENTED by keeping it in air tight CONTAINER or by ADDING antioxidants

36.

What is Zwitter ion?

Answer» ULE or ion having separate positively and NEGATIVELY charged GROUPS.
37.

Please solve this...Tomorrow is my test....please help me!!!

Answer»

your ANSWER.

38.

On adding naoh to ammonium sulphate a colourless gas with pungent odour is evolved which forms a blue coloured complex with cu2+ ion. Identify the gas.

Answer» EVOLVED is AmmoniaMark me BRAINLIEST
39.

किसे शुष्क बर्फ कहते हैं ?.

Answer»

्बन डाइऑक्साइड (solid CARBON dioxide) को शुष्क बर्फ (dry ICE) कहते हैं। 1 ATM (ATMOSPHERIC pressure, यानी वातावरण द्वारा लगाया गया दाब) से कम दाब होने पर कार्बन डाइऑक्साइड ठोस रूप लेते हुए, शुष्क बर्फ बन जाती है। दोबारा 1 atm में रखने पर यह वापस गैस रूप में बदलने लगती है। इसका प्रयोग चीज़ों को जमाने के लिए या जमे रखने के लिए किया जाता हैं क्योंकि यह सामान्य बर्फ से कहीं ज्यादा ठंडी होती है ।इसका प्रयोग खाने के रखरखाव में किया जाता है (Food preservation) ताकि यह जीवणुओ, विषाणुओं इत्यादि से सुरक्षित रहें।

40.

Calculate the mass of 12.044 into 10 to the power 25 molecules of oxygen

Answer»

s is 6400gms.

41.

Arrange the metals Mg, Na, Ag, Cu, Fe, Zn in the increasing order of reactivity. Which one will be the strongest reducing agent and which one will be the weakest one?

Answer»

e>Zn>Mg>NaThus, NA is the STRONGEST Reducing AGENT and SILVER is the weakest Reducing Agent in the above table.

42.

If 90 g of water is taken in a beaker find tha no of moles in it

Answer»

90/18 = 5 MOLES.

43.

Why does p- nitrochlorobenzene undergo nucleophilic substitution faster than chlorobenzene ?

Answer»

ductive EFFECT produce by the nitro group at pera position and DECREASE the election density at benzene ring so NUCLEOPHILE easily attack on benzene ring

44.

Explain about the fraction distillation? In points!!!!......

Answer»

re is your answer...↓↓↓↓↓↓↓↓↓↓Fractional Distillation :-→ Fractional distillation is USED to seperate any solution containing liquids with different BOILING points.→ The liquid in the mixture with the lowest boiling point (the most volatile) DISTILS over first.→ The final liquid to distil over is the one with the highest boiling point (the least volatile).→ The fractional distillation can be adapted as continuous process and is used industrially to seperate:- • The various FRACTIONS from petroleum. • The different gases from liquid air.____________________________I hope it helps you...____________________________

45.

K3[Fe(C2O4)3] IUPAC Name of this

Answer» UM ferrioxalate is your ANSWER. HOPE it HELPS uh❤❤❤
46.

What do you mean by chemical properties?

Answer»

cal property is any of a material's properties that becomes evident during, or after, a CHEMICALREACTION; that is, any quality that can be established only by changing a SUBSTANCE's chemical IDENTITY. ... They can ALSO be useful to identify an unknown substance or to separate or PURIFY it from other substances.

47.

What do you mean by Avogadro's constant

Answer»

o CONSTANT = 6.022*10^23

48.

Smoke and fog both are aerosols Inwhat way are they different smoke and fog both are aerosols is in what way are they different

Answer»

for ANSWER CHECK the PICTURE above

49.

Why does colour of copper sulphate solution change when an iron nail is dipped in it ? write a balanced chemical equation for same.

Answer»

of copper sulphate solution is blue in colour.Iron being highly reactive element than copper which displaces the copper from its salt solution...When this happen , two things are OBSERVED => Colour of the copper sulphate solution ( blue colour ) turns light green which is nothing just a iron sulphate solution..=> Copper get deposited over the iron nail DUE to which iron nail turns in brownish colour..This type of reaction is called displacement reaction in which highly reactive element displaces the least reactive element from its salt solution...Chemical EQUATION =================CUSO4 ( aq ) + FE ( s ) --> FeSO4 ( aq ) + Cu ( s )( equation is already balanced )

50.

What happens when aluminium cloride reacts with zinc granules

Answer»

to your question: ♡There will be no REACTION between ALUMINIUM Chloride and ZINC granules as ACCORDING to the reactivity series,zinc granules won't be able to displace aluminium from aluminium chloride as zinc is less reactive than aluminium.Hope it HELPS ^_^