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.

Word equation for c+o2=co2

Answer» CARBON + AIR (OXYGEN) =CARBONDIOXIDE
2.

How to write chemical reaction if chemical reaction is given in words​

Answer»

tion:In chemistry, a WORD EQUATION is a chemical reaction expressed in words rather than chemical FORMULAS. ... The words "and" or "plus" mean one chemical and ANOTHER are both reactants or products. The phrase "is reacted with" indicates the CHEMICALS are reactants.

3.

Please answer this ......​

Answer»

10gExplanation:

4.

What is black body reaction?​

Answer»

A blackbody (sometimes SPELLED "BLACK body") is a theoretically ideal radiator and absorber of energy at all electromagnetic wavelength s. The TERM COMES from the fact that a COLD blackbody appears visually black. The energy emitted by a blackbody is called blackbody radiation.

5.

Mention the types of semiconductor ,(n-types or p-type) when silicon is doped with phosphorus .​

Answer»

Hey mate ..I THINK so N - type SEMICONDUCTORS ...Hope this helps you...

6.

How many grams of sodium will have the same number of atoms as 6 grams of magnesium​

Answer»

no.of ATOM of NA = no.of atom of Mghope it HELP U

7.

How to write equation of chemical reaction if chemical reaction is given in words​

Answer» SKELETAL CHEMICAL EQUATION USE KAR
8.

What is diffusion ?give one example of each of diffusion of gas in gas, liquid in liquid ,solid in solid

Answer» TION:diffusion is net MOVEMENT of ANYTHING from a region of HIGH CONCENTRATION to a lower concentration
9.

If x^8 - 47x^4 +1= 0, then find x^2 + 1/x^2 = ?​

Answer»

x^2 + 1/x^2 = 7.✌️Hope it will HELP you.✌️

10.

What is diffusion ? give one example each of diffusion of gas in gas, liquid in liquid and solid in solid

Answer» DIFFUSION IMPLIES thatExplanation:it is the intermixing of particles OOF SUBSTANCES LIKE
11.

Alkaline Earth metals have low values of electronnegativity decreases down the group​

Answer»

Each of these elements has a low ELECTRONEGATIVITY on the PAULING SCALE, and the ELECTRONEGATIVITIES clearly DECREASE down the group. The atoms are decreasingly effective at attracting bonding pairs of electrons. Imagine a bond between a magnesium atom and a chlorine atom.

12.

Synthesis of acetanilide from aniline and acetyl chloride

Answer»

tion:PREPARATION of acetanilide from aniline and acetyl chloride : The nucleophilic substitution of AROMATIC AMINES with acid chloride RESULTS in the FORMATION of N-substituted amides. The reaction of aniline with acetyl chloride is carried out in alkaline medium. This reaction is popularly called Schotten-Baumann reaction.

13.

Write a chemical name and formula of the compound which is use as an antacid

Answer» MILK of MAGNESIA is USED as an ANTACID
14.

Calculate the percentage by mass of sodium in the compound sodium trioxocarbonate(IV)decahydrate

Answer» SEARCH on GOOGLE
15.

What name of symbol of molar candektvity

Answer»

The NAME of SYMBOL of molar conductivity is lambda. hope it HELPS you!!

16.

The metal having highest freezing point

Answer» TUNGSTEN is the METAL having HIGHEST FREEZING POINT
17.

4. Which one of the following will have law heat of fusion? (1) A covalent solid (2) An ionic solid (3) A metallic solid (4 )A molecular solidplease answer question with a brief reasoni will mark it as brainliest answer​

Answer»

A MOLECULAR SOLID Explanation:because each substance have molecules in it and it TAKE times to burn

18.

Explain wurtz reaction with its mechanism,uses and reaction.​

Answer»

which REACTION is this.

19.

संदर्भ meaning(marathi)​

Answer»

it is same in both LANGUAGES

20.

Why does temperature in Mumbai and Chennai not fall as low as it does Delhi?

Answer»

Explanation:The temperature do not fall low as in DELHI than in mumbai or chennai because mumbai and chennai are NEAR the equator and the time lag is nearly 2 to 3 or 3 to 4 hours there as difference of DAY and night DECREASES as we move towards the equator but as we move away from the equator the time lag and difference b/w day and night increases but delhi is also near the temperate zone so delhi,s temperature falls low than the tamperature in chennai and mumbai.

21.

Collect the information about ph value in our daily life

Answer» DAILY LIFE of PH VALUE is 7- 7.8
22.

How to balance chemical equations I will mark as Brainlist​

Answer»

the proper steps for you question is listed below please read it two to three times so you will be able to understand how to balance the chemical EQUATION Explanation:1)Trial and error method: Step 1 : Write the unbalanced equation using correct chemical formulae for all substances.Step 2 : COMPARE number of atoms of each element on both sides.Find the coefficients to balance the equation. In this case, there are 3 carbon atoms on the left SIDE of the equation but only ONE on the right side. If we add a coefficient of 3 to {{CO}_{2}} on the right side the carbon atoms balance.Now, look at the number of hydrogen atoms. There are 8 hydrogen atoms on the left but only 2 on the right side. By adding a coefficient of 4 to the H_{2}O on the right side, the hydrogen atoms get balanced.Finally, look at the number of OXYGEN atoms. There are 2 on the left side but 10 on the right side. By adding a coefficient of 5 to the O_{2} on the left side, the oxygen atoms get balanced.Step 3 : Make sure the coefficients are reduced to their smallest whole number values. The above equation is already with the coefficients in smallest whole numbers. There is no need to reduce its coefficients. Hence the final equation isStep 4 : Check the answer. Count the numbers and kinds of atoms on both sides of the equation to make sure they are the same2) ion electron method 3) oxidation number method if want these two method also pls ask me follow me @sanjay_warriyo

23.

How to balance chemical equations​

Answer»

by continuing the NUMBER of atoms I RHS SIDE and LHS side

24.

Which of the following has the highest magnetic moment ?1)Fe+22) Mn+23) Cr+34) V+3​

Answer»

fe+2Has HIGHEST MAGNETIC momentmark me BRAINLIST

25.

Explain the principle. and procedure of The ( thin layer chromatography)​

Answer»

Chromatography works on the principle that different compounds will have different solubilities and adsorption to the two PHASES between which they are to be partitioned. Thin Layer Chromatography (TLC) is a SOLID-liquid technique in which the two phases are a solid (stationary phase) and a liquid (moving phase).Thin Layer Chromatography Procedure Before starting with the Thin Layer Chromatography Experiment let us understand the different components required to conduct the procedure along with the phases involved. Thin Layer Chromatography Plates – ready-made plates are used which are CHEMICALLY inert and stable. The stationary phase is applied on its surface in the form of a thin layer. The stationary phase on the plate has a fine PARTICLE size and also has a uniform thickness. Thin Layer Chromatography Chamber – Chamber is used to develop plates. It is responsible to keep a steady environment inside which will help in developing spots. Also, it prevents the solvent evaporation and keeps the entire process dust-free. Thin Layer Chromatography Mobile phase – Mobile phase is the one that moves and consists of a solvent mixture or a solvent. This phase should be particulate-free. The higher the quality of PURITY the development of spots is better. Thin Layer Chromatography Filter Paper – It has to be placed inside the chamber. It is moistened in the mobile phase.

26.

The pressure on one mole of gas at store is doubled and the the temperature is raised to 56 k . Volume of the ? One mole a gas occupies a volume of gas occupies a volume of 22.4 litres at stp

Answer» TION:sorry I don't KNOW answer Sorry for the AVENGER and FIVE years ago I don't know answer Sorry
27.

Oxidation number of S in (CH3) 2S

Answer»

S is double-bonded to O (— 2 ELECTRONS) and is bonded to 2 C (+2 electrons). +2 + -2 = 0. S has a 0 OXIDATION NUMBER in (CH3)2SO.

28.

When 7 grams of iron filings and 4g sulphur powder is heated sharply and then it is treated with dilute sulphuric acid. Name the gas produced

Answer» ANATION:The gas PRODUCED is HYDROGEN SULPHIDE which smells like rotten eggsFeS+H2SO4=FeSO4+H2S
29.

Al2(SO3)3+Fe=F3O4+Al is right or wrong

Answer»

it is wrong. EXPLANATION:because SULPHUR is REMOVED in right side. and EQUATION is not balancedI think I am correct sorry If I am wrong

30.

Calculate the valume in dm3 occupied by 60.0g of ethane s tp

Answer»

22.4dm3Explanation:no no that one mole of any gas OCCUPIES 22.4 DM cube volume at STANDARD TEMPERATURE and PRESSURE

31.

in compound a 1.00 gram of Nitrogen Unites with 0.57 gram of oxygen in compound B, 2.0 gram of Nitrogen combines with 2.24 gram of oxygen in compound C 3.00 gram of Nitrogen combines with 5.11 gram of oxygen this result obey the law​

Answer» EXPLANATION:=> Here, According to the questionCompound A : 1.00 g N + 0.57 g O₂Compound B : 2.00 g N + 2.24 g O₂Compound C : 3.00 g N + 5.11 O₂So If we fixed the amount of nitrogen (1 g) for all compound then,Compound A : 1.00 g of N Unites with  0.57 g of O₂Compound B : 2 g N ------> 2.24 O₂1 g N -------> ?= 1 * 2.24 / 2= 1.12 g O₂Compound C : 3 g N ------> 5.11 O₂1 g N -------> ?= 1 * 5.11 / 3= 1.70 g O₂=> Thus, Take in CONSIDERATION the ratio of oxygen of all three compounds for the fixed amount of Nitrogen, then we getRatio of oxygen ≈ 1 : 2 : 3=> This ratio indicates the law of multiple PROPORTION.
32.

What is the difference between nascent Oxygen and oxygen​

Answer»

nasent oxygen MEANS oxygen they had just presumbly in a CHEMICAL RXN .Atomic oxygen is a oxyegen that we BREATHE . 2 atoms combine with each other and FORM oxygen molecules . in this single atoms of oxygen is present

33.

Like cotton'pebbles filter paper etc this substance can also be used as filter​

Answer»

please give me thanksThe SUBSTANCES which can be used as filters are as follows:-A LAYER of sandCharcoalPiece of COTTON clothGlass woolUnglazed porcelainFilter paperDice of MUSLIN cloth etc..

34.

Convert isopropyl chloride to propanol

Answer» TION:CH3-CH-CH3 +alcKOH→CH3CH=CH2 | Cl +HCl pesence PEROXIDE CH3CH=CH2----------------→ NaOH CH3CH2CH2CL-----→CH3CH2CH2OH
35.

Maximum multiplicity of S orbital ​

Answer»

based on observation of atomic spectra, which is USED to predict the ground state of an atom or molecule with ONE or more open electronic shells. The rule states that for a given electron configuration, the lowest energy term is the one with the greatest value of spin multiplicity.[1] This implies that if two or more orbitals of equal energy are available, electrons will occupy them singly before filling them in pairs. The rule, discovered by Friedrich HUND in 1925, is of important use in atomic chemistry, spectroscopy, and quantum chemistry, and is often abbreviated to Hund's rule, ignoring Hund's other two rules.Atoms EditThe multiplicity of a state is defined as 2S + 1, where S is the total electronic spin.[2] A high multiplicity state is therefore the same as a high-spin state. The lowest-energy state with maximum multiplicity usually has unpaired electrons all with parallel spin. Since the spin of each electron is 1/2, the total spin is one-half the number of unpaired electrons, and the multiplicity is the number of unpaired electrons + 1. For example, the nitrogen atom ground state has three unpaired electrons of parallel spin, so that the total spin is 3/2 and the multiplicity is 4.The lower energy and increased stability of the atom arise because the high-spin state has unpaired electrons of parallel spin, which must reside in different spatial orbitals according to the Pauli exclusion principle. An early but incorrect explanation of the lower energy of high multiplicity states was that the different occupied spatial orbitals create a larger average distance between electrons, reducing electron-electron REPULSION energy.[3] However, quantum-mechanical calculations with accurate wave functions since the 1970s have shown that the ACTUAL physical reason for the increased stability is a decrease in the screening of electron-nuclear attractions, so that the unpaired electrons can approach the nucleus more closely and the electron-nuclear attraction is increased.[3]As a result of Hund's rule, constraints are placed on the way atomic orbitals are filled in the ground state using the Aufbau principle. Before any two electrons occupy an orbital in a subshell, other orbitals in the same subshell must first each contain one electron. Also, the electrons filling a subshell will have parallel spin before the shell starts filling up with the opposite spin electrons (after the first orbital gains a second electron). As a result, when filling up atomic orbitals, the maximum number of unpaired electrons (and hence maximum total spin state) is assured.The valence orbitals of the oxygen atom (sides of diagram) and the dioxygen molecule (middle) in the ground state. In both atom and molecule, the electrons in singly occupied orbitals have their spins parallel.For example, in the oxygen atom, the 2p4 subshell arranges its electrons as [↑↓] [↑] [↑] rather than [↑↓] [↑] [↓] or [↑↓] [↑↓][ ]. The manganese (Mn) atom has a 3d5 electron configuration with five unpaired electrons all of parallel spin, corresponding to a 6S ground state.[4] The superscript 6 is the value of the multiplicity, corresponding to five unpaired electrons with parallel spin in accordance with Hund's rule.An atom can have a ground state with two incompletely filled subshells which are close in energy. The lightest example is the chromium (Cr) atom with a 3d54s electron configuration. Here there are six unpaired electrons all of parallel spin for a 7S ground state.[5]Explanation:PLEASE MARK ME AS BRAINLIEST

36.

Which of the following statement about a compound is incorrect a) a molecule of a compound has atoms of different elements b) a compound cannot be separated into its constituents element by physical methods of separation c)a compound retain the physical properties of its constituents element d) the ratio of atoms of different element in a compound is fixed​

Answer» CEXPLANATION:c a compound RETAIN the PHYSICAL PROPERTIES of its constituents element
37.

Give example of fractiomal order

Answer»

CH 3 CHO is the answer. Explanation:An EXAMPLE of fractional order reaction - - - - The PYROLYSIS of acetaldehyde (CH 3 CHO) into methane and carbon MONOXIDE proceeds with an order of 1.5 with respect to acetaldehyde : r = k(CH 3 CHO)3/2.Read more on Brainly.in - brainly.in/question/11381511#readmoreExplanation:

38.

Hydrogen exists in three isotopic form what are the electronic configuration

Answer»

1H1, 1H2, 1H3Explanation:because these are Proteium deteurium and ttitium

39.

Explain the half filled and full filled configuration of cu and cr and zn

Answer»

Cr has CONFIGURATION is 4s2 3d5 &Cu has configuration is 4s13d10Zn has configuration is 4s2 3d10 EXPLANATION:Cr is half filling due to d5 ENEGY difference is LESS 4s&3d orbital ,more stable Cu&Zn is COMPLETELY filled due to 3d10 ,extra stability. less energy difference

40.

Matter in any state is composed of particle.compare the three state of matter i.e solid,a) intermolecular space b) intermolecular force of attraction c) movement of particles

Answer»

solid has negligible INTERMOLECULAR SPACE. has very HIGH intermolecular FORCE of attraction. they can only vibrate at their places.

41.

What is the number of moles of oxygen atom in 1:26 AMU of hn O3​

Answer» 48 NUMBERS of MOLES of OXYGEN
42.

Power consumption in metal cutting is mainly due to

Answer»

tion:Regardless of the tool being used or the metal being cut, the chip forming process OCCURS by a mechanism called PLASTIC deformation. ... In oblique cutting, a single, straight cutting edge is inclined in the direction of tool travel. This inclination causes CHANGES in the direction of chip flow up the FACE of the tool.

43.

Periodic table of chemical elements impact of human being in hindi essay

Answer»

Answer:Health Care and beautyPreserving health from the impurities present in the ENVIRONMENT is the biggest challenge in today’s polluted WORLD. Medicines which are made up of chemical compounds are the most essential PART of our daily life. The diagnostic tests, vaccines laboratory tests of diseases, monitoring and curing are the parameters of health control system. From the birth of human life to the life expansion system, all have been possible by enjoying the services of chemistry. From injection to antiseptic pills, chemotherapy till reproduction of human organs, all are using the services of chemistry directly or indirectly.In beauty treatments a lot of chemicals are used like ammonia, hydrogen and bleach. A latest invention is to use chemical compounds to reduce the effect of aging. Although some of the chemicals have adverse effect on our health and specially skin yet it is the main ingredient to protect our body and life.Industries and TransportationCloth Mills, Metal industry, Leather Factories, Petro chemical industries and the other industries make extensive use of chemicals in one or the other form which has developed chemistry as a service to the mankind. The fuel used and gases formed during these processes harm human life sometimes but at the same time the procurement and treatments are also done by using chemicals. For example, petrol and diesel are distilled fuels formed after chemical reactions which cause pollution in the air. At the same time the anti pollutant methods also use chemical products.Food Security and AgricultureInorganic fertilizers are used to protect our crops from getting spoiled. The green revolution is an achievement in this area. Many of the fertilizers, pesticides increase the fertility of the soils. Even in food preservation techniques, grain mixing and crop maintenance the chemical compounds are used. The seed are mixed and modified with chemicals to enhance the production and earn profits. The refrigeration of food used for cold storage and poly urethanes foam (PUF) used for vegetable preservation are the gases which have some adverse effect on the health. Hence bio-chemical products are introduced which are new inventions in the field of bio-chemistry.Science and TechnologyThe mankind had faced destructive effects of atom bombs which was an extension of chemical reactions. Many of the nuclear weapons and biological bombs are still a curse to humans. Many terrorists use dangerous gases and RDX type of the materials which will have adverse effects. These are the bad effects of chemistry on us. But at the same time some natural science applications like changing colour of leaves, cooking food oil and gases, cleaning processes are the necessary application of chemistry which we are using in our day to day life.Apart from these major fields, the new INNOVATIVE discoveries using services of chemistry are coming up like waste management systems, forensic science, crime investigation chemicals, telecommunication systems, Information technology and space missions. In the modern world, no field is left untouched with the extended HAND of chemistry.

44.

Physical and chemical properties of salt water

Answer» PHYSICAL:we can seperate them by any physical methodchemical:we cannot SEPRATE
45.

People are greatest resoure that country has. Explain? Long answer

Answer»

tion:The development of any COUNTRY depends upon the quality and QUANTITY of its population. If a country has optimum quantity and quality of population has a faster rate of development. On the other HAND the with less population faces the problem of diminishing rate development. Therefore PEOPLE are the greatest RESOURCE that any country has.

46.

No of moles in 400 cc of ethanol if specific volume ic 1.33cc/g

Answer» TION:your ANSWER is 11.56 MOLE
47.

Balance pb(No3)2=pbO+NO2+O2

Answer» 2PB(NO3)2-------2PbO+4NO2+O2
48.

Why do we see water droplets collect on the outer surface of a glass container, contating ice

Answer»

12345678910i don't KNOW the ANSWER

49.

Valency of magnesium chloride

Answer»

+2 is valencyExplanation:

50.

Cutting of log of wood into pieces

Answer»

It is a PHYSICAL change because if we cut the wood into pieces it does not COME BACK as in same POSITION