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.

Which one of the following is manufactured by the electrolysis of fused sodium chloride [CPMT 1979, 83, 91]A) NaOH B) NaClO C) Na D) NaCl{{O}_{3}}

Answer» HELLO Dear.

Here is the answer---

••••••••••••••••••••••••

》Answer --- Option C. Na (SODIUM)

》Explanation- During the electrolysis of the fused sodium chloride, sodium which forms an Cation is deposited in the Cathode and chlorine which forms an anion deposited at an anode.

ELECTROLYTIC Dissociation 》》》

NaCl •••••》 Na+ + Cl-

☆ Reaction at cathode》

○○○ Na+ + e- ••••••》Na

☆ Reaction at anode 》

○○○ 2Cl- - 2e- •••••••》Cl2

Thus, from these reaction, we can say that Na is EVOLVED at Cathode.

Thus, Option C. is correct.

••••••••••••••••

Hope it helps.☺

Have a Marvelous Day.☺
2.

Metals are [MADT Bihar 1983]A) Electropositive B) Electronegative C) Acceptor of electrons D) None of these

Answer» METALS are ELECTROPOSITIVE
3.

In electrolytic refining, the impure metal is made is used to make [MP PET 2003]A) Cathode B) Anode C) Electrolytic bath D) None of these

Answer» DEAR ANSWER is ELECTROLYTIC BATH
4.

The cyanide process is used for obtaining [DPMT 1982; CPMT 1976, 84, 90; MNR 1995; MP PET/PMT 1998; AIEEE 2002]A) Na B) Ag C) Cu D) Zn

Answer»

I am in ola now, but I THINK the answer to the clan born to the answer to the clan born to be a PILOT of the most IMPORTANT thing is that the answer is that the answer is that the answer is yes, I have a SWEET, and the SOUL, but I am

5.

A note on the closed-form solution of the solow model

Answer» EXPLAIN what is solow???
HAHA
6.

N electrolytic refining of metals, electrolysis of an aqueous solution of its complex salt is done with impure metal as anode and an strip of pure metal as cathode. This method cannot be used for the refining of the metal [MP PMT 1989]A) Silver B) Copper C) Aluminium D) Zinc

Answer»

D. ZINC
I HOPE this is your ANSWER

7.

Why we do not use clinical thermometer to measure the temperature of boilig oil

Answer»

Because the TEMPERATURE is higher than the range of clinical THERMOMETER. so they USE LABORATORY thermometer

8.

What happens when iron reacts with weak acid

Answer»

Hi,

Here's the answer :-

When a metal REACTS with a weak acid, there is generally no reaction, but if the metal is kept in it for a LONG time, it forms salts.

Here, the SALT would be FORMED, when iron is DIPPED in it for a long time.

Hope it helped :-)

9.

Acid used for standardising sodium hydroxide

Answer»

The most COMMON ACID USED to standardise sodium hydroxide is Oxalic Acid.

10.

Dehydrogenationf alcohol produces compound

Answer» ETHANE is the PRODUCT NAME
11.

Why are decomposition reactions called the opposite of combination reaction?

Answer»

In a COMBINATION reaction to or more SUBSTANCES are COMBINED to form new substances while in the DECOMPOSING DECOMPOSITION reaction 1 substances decomposition into two or more substances

12.

A element in which after corrosion it is proved not to be waste

Answer»

Corrosion is an electrochemical process whereby metals are converted to oxides, hydroxides, carbonates or sulfides by reaction with ambient moist air that also might contain CO2, H2S etc.

Corrosion affects all metals except noble metals (gold, platinum), because metals are quite reactive towards oxidation.

When iron corrodes, it forms a layer of rust (oxides and HYDROUS oxides). Rust does not adhere to the iron very well, and atmosphere can penetrate underneth the layer of rust and attack fresh iron metal layers beneath. This is why a piece of iron left out in the open will rust through and through. Painting or putting on a protective coat of silcone can slow down the corrosive degradation of iron. Stainless steel is an ALLOY of iron that contains other MATERIALS (carbon, nickel) that essentially disrupts the corrosion reaction and stops it.

Aluminum and COPPER form oxide layers that adhere to the metal, and prevents the atmospheric corrosion from penetrating below the oxide layer. This protects the metal beneath the outer corroded layer. If you clean the aluminum or copper surface, the freshly cleaned surface will lose its shine and will tarnish fairly quickly, but the corrosion does not penetrate to layers below. Aluminum and copper have self-protecting corrosion mechanism, but other metals (Fe, NI etc.) do not have this.

hope this will help you

13.

A mixture of carbon dioxide CO2 (40% molar0 and N2 (60% molar) at 227C

Answer» TAKE the PHOTO of that QUESTION and SEND it
14.

Please answer fast ...is it optically active or inactive compound.. justify your answer

Answer» OPTICALLY INACTIVE CAUSE it can be CUT
15.

Chloroform contains chlorine but it does no give white silver precipitate with silver nitrate

Answer»

Chloroform is a gas.So it doesn't give WHITE precipitate with SILVER NITRATE SOLUTION.

16.

after a period objects made of iron or steel become coated with rust. The rusting of iron is a serious problem and wastes

Answer»

This is called RUSTING of IRON. It happens due to presence of moisture in AIR. It detoriates the iron QUALITY.

17.

Which principal is used to store CNG in petrol pumps?

Answer»

Natural gas is highly pressurized as it travels through an interstate pipeline. To ensure that the natural gas flowing through any one pipeline remains pressurized, compression of this natural gas is required PERIODICALLY along the pipe.In addition to compressing natural gas, compressor STATIONS also usually contain some type of liquid separator, much like the ones used to dehydrate natural gas during its processing. Usually, these separators consist of scrubbers and filters that capture any liquids or other unwanted particles from the natural gas in the pipeline. Although natural gas in pipelines is CONSIDERED ‘dry’ gas, it is not uncommon for a certain amount of water and hydrocarbons to condense out of the gas STREAM while in transit. The liquid separators at compressor stations ensure that the natural gas in the pipeline is as PURE as possible, and usually filter the gas prior to compression.

18.

Which particles have higher source of attraction

Answer» MAGNET has HIGHER POWER of ATTRACTION
19.

Name some hydrocarbonds whose carbons and hydrogen are distinguishing to solve empirical formula and molecular formula question. Like benzene, Ethene.....

Answer» MoleculeStep 1 
CNH2N +2
Step 2 
Adjust
Step 3 
Subtract
Step 4 
Divide
HDI
Benzene 
C6H6
14614 - 6 = 88/2 = 44
Pyridine 
C5H5N
125–1 = 412 - 4 = 88/2 = 44
Ethylamine 
C2H7N
67–1 = 66 – 6 = 0 0
2-Butanol 
C4H9OH
101010-10 = 0 0
Chlorobenzoic ACID C7H5O2Cl165+1=616-6 = 1010/2=55
20.

3 compartment disposable plastic tray used for

Answer»

They are easy to DISPOSE of once used sturdy in nature and COME very handy while dealing with bulk requirements.With VARIETY of meal trays and disposable PLATES ...
.
hope it will HELP u.

21.

10 example of trivalent elements

Answer»

1.Baron
2.Aluminium
3.Gallium
4.Indium
5.Scandium
6.Yttrium
7.Lanthanum
8.promathium
I KNOW only 8 if you like this ANSWER MARK it as BRAINLIST

22.

A compound that gives a positive iodoform test is

Answer»

The ANSWER to your QUESTION is ACETYLENE

23.

Enumerate the changes that take place inside the matter during the change of states

Answer»

On INCREASING temperature, KINETIC ENERGY of the molecules increases and FORCE of attraction
between the molecules decreases and the state of matter changes.

(b) This is because the HEAT supplied to the matter is utilized in changing the state by overcoming
the force of attraction.

24.

Carbon accumulatioon rate in in northern india

Answer» 34 PERCENTAGE.......
25.

Which gas is known as stranger gas? ??

Answer» HEYYA..

XENON GAS is the RIGHT ANSWER!

26.

What forms when zinc dissolves in excess of NaOH

Answer»

If you have any questions or concerns please kindly find the attachment for my order number is places and register by a CLEAR title and description of DD free to call the attachment file of my CODE is on my SWEETY the way you will find out what happened and description and the attachment file and the way I SEE

27.

Can water ideal gas get convert to water

Answer» YES it can be....
THNX...
28.

Give the defination of round bottom flask

Answer»

The round bottom flasks are the type of FLASK having spherical bottom used as laboratory glassware mostly for CHEMICAL or biochemical works .It COMES in many sizes 5ML to 20ml with the size usually inscribed on the GLASS.
.
hope it will help u

29.

Round off 0.1576 upto one digit after decimal

Answer»

0.2 .......................«ANS

30.

What do you mean by cohesion?

Answer»

Cohesion means sticking together. If your group of friends heads to the lunchroom as a team and SITS all together, you're demonstrating strongcohesion. Cohesion is a word that COMES to us through physics, wherecohesion describes particles that are the same and tend to stick together — water MOLECULES

31.

how ink is made ...........................................................................................

Answer»

Black ink is MADE using carbon black.And white pigments such as titanium dioxide are used either by themselves or to adjust characteristics color inks.inks also contains additives such as WAXES, lubricants,surfactants,DRYING agents to aid printing and to impart any desired special characteristics.ink is MANUFACTURED in two steps,varnish and then pigments are mixed into it.
hope it helps u

32.

Boling point : When water changes its state to __________.

Answer»

Hii..

BOILING POINT is when water CHANGES its state from LIQUID to gas..

hope this HELPS!

33.

Atomic size of an element depends on nuclear charge of that element.why?

Answer»

Yes because the greater the nuclear charge the greater will be the force of nucleus to attract valence electrons thus leading to SMALL SIZE of ATOM and the smaller the nuclear charge the LESSER WOULD be the force of attraction of nucleus on valence electrons

34.

Draw the bond structure of phosphoric acid

Answer» HOPE It HELPS ☺.......
35.

if n=3 mention the orbitals present in the shell and write maximum number of electrons in the shell ??

Answer»

18 electrons and 5 orbitals
hope it HELPS you
mark me as BRAINLIST

36.

Check all these questions. and tell me the right answers

Answer»

All WRITE theaean are curreuy

37.

Write tge chemical equations of willgerodt reaction

Answer»

The Willgerodt Reactionallows the synthesis of amides from ARYL ketones under the influence ofa secondary amine and a thiating agent. The mechanism involves theformation of an enamine which undergoes thiation, and the CARBONYL groupmigrates to the END of the chain via a CASCADE of thio-substitutediminium-aziridinium rearrangements.


may its helpful for you
PLZ mark me as brainly

38.

Air pollution monitoring system project in india

Answer»

Four new research and development projects for real time monitoring of air and water quality were today launched jointly by Department of Science and Technology (DST) and Corporate Research Council of Intel.

Among the proposed projects is an air quality monitoring test bed that would be able to report and visualise scientifically validated PM 2.5 and gas measurements from 40 locations in real time. After upscaling to 60 locations, the monitoring technology is expected to cover 500 cities and towns across India.

The project aims to collect air quality information to allow policy makers and citizens to deploy data-driven control and PREVENTIVE mechanisms. The focus would be on low-cost PM2.5, Ozone, nitrogen oxide and sulfur oxide sensors. The idea is to integrate hardware, COMMUNICATION and software stack, from local sensing to distributed analytics. For this, Indian Institute of Technology, Kanpur would work in collaboration with Indian Institute of Science, Bangalore, IIT-Bombay and Duke University, Durham.

The second group would work on high resolution air quality monitoring and air pollutant data analytics. It would be led by Indian Institute of Science, Bangalore with Central Electronics Engineering Research Institute, Pilani and University of Southern California. The researchers would aim to develop sensors as well as new techniques of sampling and calibrations to develop air quality index.

The third team would work on developing an aquatic autonomous observatory. This project is also led by IIT-Kanpur, but with Woods Hole Oceanographic Institution (WHOI). The team aims to design and develop low-cost, multi-parameter, water quality platforms with auto-sampling capabilities.

The system would measure parameters like dissolved oxygen, conductivity, TEMPERATURE, nutrients, carbon-dioxide and select heavy metals. A novel energy harvesting system integrating solar panel, PIEZO electric system and micro wind turbine is envisaged.

The fourth team would work towards developing sensors for real- time river water monitoring and DECISION making. The project is co-led led by IIT-Delhi and University of California (UCR), Riverside, along with other Indian and American partners. They would develop sensors for chemical oxygen demand, microbial indicators and water flow for determining water quality.

Launching the projects, Minister for Science and Technology, Dr. Harsh Vardhan, expressed hope that they would help strengthen the government’s efforts to address the problem of air and water quality through missions like Namami Gange.

DST Secretary Dr Ashutosh Sharma said the projects would be conducted over a period of five years. DST and Intel Corporate Research Council would provide a total Rs 30 crore to the four teams on 50:50 sharing basis. The programme will be administered by the Indo-US Science and Technology Forum.

39.

Sugar and salt take the shape of the container in which they are kept even then we call them solids?

Answer»

They take the SHAPE of the conntainer by occupying the intermolecular SPACE inside them HENCE even if they r SOLIDS they take the shape of the container.....I hope its RIGHT...

40.

Explain:-1)Neutrino2)Positron

Answer»

A neutrino is a fermion that interacts only via the WEAK subatomic FORCE and gravity. The mass of the neutrino is MUCH smaller than that of the other KNOWN ELEMENTARY particle

Symbol: v̅e, ντ, v̅μ, v̅τ, νμ, νe

 positron or antielectron is the antiparticle or the antimatter counterpart of the electron. The positron has an electric charge of +1 e, a spin of 1/2, and has the same mass as an electron

41.

The valency of hydrogen in Nitrogen dioxide into

Answer» HELLO friend your ANSWER
the VALENCY of HYDROGEN in Nitrogen dioxide is
+4.

hope it helps you
42.

The correct formula of Aluminium oxide is a.alo 3 b. alo2 c. al2o3

Answer» C AL2O3 is the correvct ANSWER
43.

Why does not silver evolve hydregen on reacting with dil H2So4

Answer»

Hey!!!

According to the REACTIVITY series of METALS

=> Silver is placed below HYDROGEN

=> Silver is a INACTIVE metal.

Thus it will not REACT with Dil. H2SO4.

Hope this helps you

44.

What will be the mass of one carbon 12 atom in grams solve step by step clearly

Answer»

--> (12 g/mol) / (6.022e23/mol) = 1.9927e-23 g OK

--> 12 amu = 12 × 1.66e-24 g = 1.992e-23 g OK

--> 12 amu × 1.66e-24 g = 1.992e-23 g × 1.66e-24 g = 3.3e-47 g^2 NOT OK


Note that this is all RATHER circular, since ATOMIC mass unit is DEFINED in TERMS of the mass of the 12C mass...


hope it will help you..

45.

molarity of H2So4 solution is 18 moles if density of solution is 1.8 g/cm calculate the molality of solution

Answer»

Molality = mol H2SO4/kg solvent 
molarity = mol H2SO4/L solution 

Using DENSITY
MASS of the solution = 1.8g/ml * 1000 ml = 1800g 

Molecular weight of H2SO4 = 98g 

Mass of SOLUTE (H2SO4) = 18 mol * 98 G = 1764 g 

Mass of solvent = mass of solution - mass of solute 
= 1800 g - 1764 g 
= 36 g = 0.0036 kg 

Molality = mol. H2SO4/ kg of solvent 
= 18 mol/0.0036kg 
= 500 mol/kg

46.

Hey dear can u solve this

Answer» HEY DEAR. .................
47.

How elements are named after atomic number100

Answer» 18 ELEMENTS are NAMED
48.

the concentration of Ag ions is 1×10-6 M in AgBr solution.find the minimum concentration of Br ions necessary to cause precipitation of AgBr.Ksp of AgBr is 4×10-13 M²

Answer» AGBR-----AG+ + Br-

s. ----- 0. 0

0. -----s. s

s=10-6=Ag+

ksp= s*Br-
4*10-13=10-6 * Br-
Br-= 4*10-7
49.

How to calculate the molecular weight of epsom salt

Answer»

Heya here .....

MOLAR MASS of MGSO4 * 7H20 (EPSOM salt) is 261.4792 g/mol

thanks....!

50.

How to identify which substance is AQUEOUS during writing a chemical equation & also give e.g..

Answer»

A SOLUTION MADE in WATER is CALLED AQUEOUS solution.