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.

Balance the following reaction the oxidation number ​

Answer» TION: itskyhzmgsksksksmtslhxlhxkzkzkzlydldkyzkyxgkxhlxhlsluxlhxl
2.

Williamson synthesis reaction ...​

Answer»

ATE The Williamson Ether SYNTHESIS is an OLD reaction, dating back to 1851, but hasn’t been surpassed. There just isn’t a simpler WAY out there to make an ether. It’s a type of reaction we’ve already seen many times before – an SN2 reaction between a deprotonated alcohol [“alkoxide”] and an alkyl halide that forms an ether. NOTE that we’re forming and breaking a bond on carbon here – the textbook sign of a substitution reaction.HOPE THIS HELPS YOUPLEASE FOLLOW ME ✌️MARK ME AS BRAINLIST

3.

How is mercury made?

Answer»

tion:Mercury is usually produced from cinnabar rock, also KNOWN as mercury ore. The rock contains mercury sulfide, which GIVES it its red color. To make pure mercury, you have to extract it from the cinnabar rock and eliminate the sulfur. The easiest way to do this is to heat the rock. The sulfur combines with oxygen and the mercury turns to vapor at a boiling point of 674 DEGREES F (356 degrees C). The vapor is condensed to form liquid mercury.

4.

Calculate the percentage of copper in blue vitroil​

Answer»

tion:Blue vitriol is CuSO4.5H2O So its MOLECULAR MASS is 63.5 + 32 + (4*16) + (5*18) = 249.5. So, % of Cu = 63.5 ...

5.

Polatative explain and definition ​

Answer»

A definition is a statement of the meaning of a term Definitions can be CLASSIFIED ... The word or group of WORDS that is to be DEFINED is called the DEFINIENDUM, and the word, group of ...

6.

What are acids and bases.?​

Answer»

Heya mate.....An ACID is a chemical species that releases H^+(Hydrogen) ions.Examples :- HCL, HNO3A base is a chemical species that releases OH^-(Hydroxyl) ions.Examples :- NAOH, KOHHope it HELPS........

7.

Plz reply fast guys!!!​

Answer»

ed HYDROXYTOLUENE (BHT), also known as dibutylhydroxytoluenethis is also used as ANTI oxidantif U like it then plz FOLLOW me

8.

Prove that (dp/dT) (dT/dv)p (dv/dp)T= -1​

Answer» TION:i didn't UNDERSTAND your QUESTION... SORRY
9.

The calculated electron gain ethalpy values for alkaline earth metals and noble gases are positive . How can you explain this?

Answer»
10.

Give examples for Newton's tied law of motion.........please friends​

Answer»

when you try to squeeze a string or spring and when you try to push SOMETHING or put some FORCE on the OBJECT it will GIVE you EQUAL force back.

11.

What do you Understand by A°​

Answer» HEY mateExplanation:A° MEANS ASTRONOMICAL UNIT
12.

What is the method of preparing gypsum ?

Answer»

ᴏғ ᴘʀᴇᴘᴀʀɪɴɢ ɢʏᴘsᴜᴍ➡️SUBSTANCE: invention relates to construction industry and can be used when making gypsum-based construction articles. The method of preparing foam-gypsum mixture for making construction articles involves mixing hemihydrate gypsum, an additive and aqueous solution of foaming agent. Mixture of said component which are heated to 30-40°C is carried out in a continuously running cavitational activator-disintegrator without forced air supply with ROTOR SPEED of not LESS than 3000 min-1 for 1-1.5 min. The additive used is calcium sulphate dihydrate which is crushed to particle size 1-1.5 cm. Said components are used in a RATIO in accordance with the required density of the said articles at the output.ᴛʜɴᴋs❤

13.

Amlitical chemistry explain and definition ​

Answer»

ies and uses INSTRUMENTS and METHODS to separate , IDENTITIES and QUANTIFY matters.

14.

Calculate the volume of carbon dioxide at stp evolved by strong heating of 20g calcium carbonate​

Answer»

From BALANCED EQUATION of above REACTION we get100g CACO3 ➡44g CO220CaCO3➡ X= 8.8gCO2☺

15.

The weight of one atom of uranium is 238 amu its actual weight is

Answer» ONE Uranium atom = 238 AMU.1 amu = 1.67 X 10-27 kg∴ 238 amu = 238 x 1.67 x 10-27 kg = 397.46 x 10-27 kg = 3.97 x 10-25 kgSo, actual weight of uranium atom = 3.97 x 10-25 kg ans
16.

Which of the following compounds can not demonstrate the law of multiple proportion

Answer»

friend, you mention in the question that which of the following compound but the compound is not GIVEN plz SEND me the option of the question then I can give you a CORRECT ANSWER of your question

17.

Ethyne on passing through red hot iron tube gives a) toluene. b) benzene. c) hexane. d) naphthalene​

Answer»

(B) BENZENE is the RIGHT ANSWER

18.

Difference between suspension and collide with many points​

Answer»

Suspension:Their particle size is greater than 100 nm.They are easily visible.They settle down due to gravity.In filtration, residue is formed.They are heterogeneous mixture type.Their appearance is translucent or opaque,Colloids:Their particle size is between 1 to 100 nm.They are invisible to NAKED eye and only visible under POWERFUL microscope.They settle down under high centrifugation.In filtration, no residue is formed.They are also heterogeneous mixture type.Their appearance is translucent. HOPE it HELPS you!

19.

Write three uses of sodium carbonate​

Answer»

The MAIN uses of sodium CARBONATE are as water softener, food processing aid, pH modifier, SWIMMING pool chemical and electrolyte. It is also used in the manufacture of glass, paper, soaps and DETERGENTS, and many other useful chemicals.

20.

Rate of reaction depends on size of the particles explain?​

Answer»

e of REACTION DEPENDS only on SIZE of the particles. .....hope it HELPS u follow me .............

21.

Balance the equation When hydrogen sulphite gas burns in air to give out water and sulpher di oxide.......

Answer» 2H2SO4--------HEAT : 2H2O + 2SO2
22.

Give the various applications of organic chemistry​

Answer»

Chemistry:Organic chemistry is a highly creative science in which chemists create new molecules and explore the properties of existing compounds.Applications:Organic compounds are all around us. They are central to the economic growth of the United States in the rubber, plastics, fuel, pharmaceutical, COSMETICS, detergent, COATINGS, dyestuff, and agrichemical industries, to NAME a few. The very foundations of biochemistry, biotechnology, and MEDICINE are built on organic compounds and their role in life processes. Many modern, high-tech materials are at least PARTIALLY composed of organic compounds .

23.

Every change can be classified as either physical or chemical. True or False ​

Answer»

I think it is true ........because every CHANGE is reversible or irreversible.In every change , new substances are FORMED and in OTHERS , it is not..........hope it HELPS

24.

Food items can be preserved for long timein refrigarator

Answer»

can be preserved for long time in REFRIGERATOR because moisture in refrigerator keeps FOOD FRESH and it cAn be used for long time and as we know in refrigerator we FOUND CNG gas and it help food in rotten

25.

Differentiate between mixtures and compounds by giving appropriate examples

Answer»

s are the substances which are not chemically COMBINED but are PHYSICALLY combined.Eg-The BHEL which we eat is a MIXTURE as the constituents are not chemically combined but are physically combined and can be differentiatedComponds-These are substances which are chemically combined and can be separated through only chemical means.Eg-H2O

26.

List four physical property of metal.

Answer»

Hello MATE! Here is your answer.. 1. METALS are lustrous (shiny). 2.Metals have high MELTING and boiling points. 3. Metals are malleable and ductile. 4.Metals are excellent CONDUCTORS of HEAT and electricity. Hope it helps you

27.

10) The average speed at T K and most probable speed at T2K of CO, gas is 9 x 104 cm/sec.The values of T, and T2 are1) 2143 K; 1694 K 2) 1726 K;2126 K3) 1684 K ; 2143 K 4) 1684 K ;3368Kplz solve it correctly ​

Answer»

answer is (1)EXPLANATION:Average speed = $\sqrt{(\large\frac{8RT}{\PI m})}$Most probable speed = $\sqrt{(\large\frac{2RT}{m})}$Average speed at $T_1 K$ = MP speed at $T_2K for\; CO_2$$\sqrt{(\large\frac{8RT_1}{\pi m})} = \sqrt{(\large\frac{2RT_2}{m})}$$\large\frac{T_1}{T_2} = \large\frac{\pi}{4}$------(i)Also for $CO_2 u_{mp} = \sqrt{(\large\frac{2RT}{m})} = 9\times10^4$$=\sqrt{\large\frac{2\times8.314\times10^7\times T_2}{44})}= 9\times10^4$By eq (1) We GET$T_2 = 2143.37K$$T_1 = 1684.0K$Hence answer is (1)hope...it..helps....make..me..brainlist..

28.

Limiting reagent -definition and explain ​

Answer» E thank for the question Hope it helps In the chemical REACTION out of two reactants one complete or REACT COMPLETELY during the reactionReal definition of limiting reagent isThe reactant which completely used in reaction or the reactant which is in lesser AMOUNT is termed as limiting reagent
29.

Number of Ca^+2 and cl^-2 ion in 111 g of anhydrous CaCl, are -(A) NA, 2NA(B) 2NA, NA(C) NA, NA(D) None​

Answer»

the CORRECT OPTION is A

30.

On what factors does the resistance of a conductor depend

Answer»

resistance of a conductor depends UPON LENGTH, material,temperature and area.... 4. Fourth is depend on CONDUCTIVITY of the material

31.

What is meant by dream​

Answer» DREAM IS A THING WE SEE WHEN WE SLEPT VERY DEEP
32.

Definition and explain Accurancy ​

Answer»

the QUALITY or the STATE of being PRECISE is CALLED ACCURACY

33.

Q.13 Out of 1.0 g dioxygen, 1.0 g (atomic) oxygenand 1.0 g of ozone, the maximum number ofoxygen atoms are contained in -(A) 1.0 g of atomic oxygen.(B) 1.0 g of ozone.(C) 1.0 g of oxygen gas.(D) All contain same number of atoms.​

Answer» K me as BRAINLIEST
34.

Role of Water in Acidic characters of acidsFast please ​

Answer»

main is is of.arhenius THEORY of acid...=in this the ACIDS are dissociate or ionised by h+ ions. in water or aq. form..as water helps in DILUTION of acid...acid PH gets down by water.. because it act as a base for acids..acid helps in our stomach in digestion of food ...

35.

Define : a. Stationary phase b. Saturatedsolution​

Answer»

tion:The STATIONARY Phase is a solid or liquid phase of a chromatography SYSTEM on which the materials are to be separated or selectively adsorbed. SATURATED Solution: A saturated solution is a chemical solution containing the maximum concentration of a solute dissolved in the solvent. 6 votes.

36.

The explosion of a mixture consisting of one vol- ume of a gas being studied and one volume of H,yielded one volume of water vapour and one vol-ume of N, . The volumes being measured underidentical conditions. Find the formula of the gas.(A) NO(B) NO,(C) NO(D) N20​

Answer»

the given CONDITION, the formula of gas is identified as .Given: 1 Vol of gas + 1 Vol of H ⇒ 1 Vol of water vapor + 1 Vol of NitrogenTo find:Formula of the the gas = ?Explanation:As per the products obtained through the REACTION of hydrogen with gas, the gas is identified as .It is because when reacts with hydrogen, it gives nitrogen as well as water as the product.The chemical EQUATION involved in the reaction is as follows:Thus the formula of the gas involved in the reaction is identified as (d) .Learn more about such conceptVapor density of a gas having formula COx is 70 . find out x brainly.in/question/1239061A gas is found to contain 2.34 g of nitrogen and 5.34 g of OXYGEN simplest formula of the compound is.... brainly.in/question/1493453

37.

Empirical formula of k4[fe(cn)6​

Answer»

It ANSWER is 4Explanation:i THINK so

38.

Of a few drops of concentrated acid accidentally spills over the hand of a student what should be done

Answer»

Since HIGH concentrated acids are very CORROSIVE to human skin it can cause skin burn or even damage the bones.If in case any PERSON spill Concentrated acid over him he must first clean it with WATER and then immediately rub some mild BASIC materials like toothpaste and then go for the proper medication and medicines that are prescribed by physician.

39.

Galvanization Process of coating a thin layer of zinc or iron sheets and pipes

Answer» YES you are CORRECT but what are you ASKING.
40.

Gowbdo you convert phenol to benzoquinone

Answer»

tion:The READY oxidation of phenol is EXPLAINED by the fact that the presence of OH GROUP on the benzene ring increases electron density to the ring due to resonance which MAKES it for oxidation reaction. Phenol on oxidation with potassium dichromate in acidic medium gives benzoquinone.

41.

How many electrons can fit in the orbital for which n = 3 and l=1

Answer»

ctrons this is because total 6 electrons can FIT for n=3 and l=1which MEANS that each orbital will contain 2 electrons.

42.

Which is the hardest known material

Answer»

DiamondExplanation:.....................

43.

find the total distance covered by a vehicle if it starts from a, goes b,c and d in turn and return backs to c,b and finaly to A

Answer» 2*(ABCD)EXPLANATION:The DISTANCE WOULD be 2*(abcd)
44.

What is sulphate solution​

Answer» HYDROGEN reduction of COBALT from AMMONIACAL sulfate solutions is also practiced [38]. It is SIMILAR to nickel hydrogen reduction.
45.

The number of sodium atoms in 2 moles of sodium ferrocyanide Na,[Fe(CN)6], is-(A) 2(B) 6.023 * 1023(C) 8 * 6.02 x 1023(D) 4 x 6.02 x 1023​

Answer»

I THINK option b is the correct ANSWER mate.Follow me and MARK my answer as BRAINLIEST......

46.

Raj made a mixture A' and a compound 'B' using iron filings and sulphur powder. Distinguish between ‘A’ and 'B' on the basis of:a)apperanceb)effect of heatc)behavior towards a magnetd)behavior towards carbon di sulphide as a solvente)Dilute HCI was added​

Answer» HEAT of EFFECT. am i RIGHT
47.

Distinguish between accuracy and precision​

Answer»

y:Accuracy is a description of SYSTEMATIC errors, low accuracy causes difference between a RESULT and true value.PRECISION: Precision is a description of random errors, a measure of STATISTICAL variability.

48.

Balance the given equation Hydrogen sulphite gas burns in the air to give out water and sulpher di oxide.......

Answer»

tion:2H2S + 3O2 -------> 2H2O + 2SO2

49.

IUPAC Name of the ring.???​

Answer» AME of RING BRANCHES is CYCLOALKANES.
50.

First electron gain entahlpy of group 1 and 2 elements is positive

Answer»

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