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 will you observe when a solution of potassium permanganate is diluted?

Answer»

It will CHANGE from BROWN to LIGHT brown/pink

2.

What is limitation of daltons model describe shortly??????

Answer»

Drawbacks of Dalton's Atomic Theory

The indivisibility of an atom was proved wrong: an atom can be further subdivided into protons, neutrons and electrons. However an atom is the SMALLEST particle that takes part in chemical reactions.

According to Dalton, the atoms of same element are similar in all respects. However, atoms of some elements vary in their masses and densities. These atoms of different masses are called isotopes. For example, chlorine has two isotopes with mass numbers 35 and 37.

Dalton also claimed that atoms of different elements are different in all respects. This has been proven wrong in certain cases: argon and calcium atoms each have an atomic mass of 40 amu. These atoms are known as isobars.

According to Dalton, atoms of different elements combine in simple whole number RATIOS to form compounds. This is not OBSERVED in complex organic compounds like sugar (C12H22O11).

The theory fails to explain the existence of ALLOTROPES; it does not account for differences in properties of charcoal, graphite, DIAMOND.

3.

No. of sigma and pi bond in c2 molecules

Answer» MARK it as brainliest
hope this HELPS you
regards
4.

Limitation of better strain theory

Answer»

LIMITATION

Explains only utilitarian crime, ignoring reasons for NON utilitarian crime

Takes an individualistic approach, ignoring group crime

Too deterministic; not all working class individuals resort to crime

Ignores ruling class power to create and enforce laws to prevent the deviant adaptations (innovations,RITUALISM,retreatism and REBELLION)

Takes official statistics at face value. Labelling theorists such as Cicourel argue that official crime statistics should not be USED as a resource (source of facts) but investigated as a topic, because they can be unreliable. Police use the typification of the 'typical delinquent' to make arrests, and working class people are more likely to fit the typification with ethnicity, clothing, manner, time and place. Therefore police will patrol working class areas more often resulting in more w/c arrests, WHILST in reality this may not be truly representative.

5.

Name the isomers of the compound whose molecular formula is C5H10O2

Answer» HOPE this HELPS you
6.

What is the action of cold hi on 2 -ethoxy propane on 12 std bookfor chemistry?

Answer»

When. 2 ETHOXY propane react with hi it GIVES CH3CH2I and CH3CH2CH2OH

7.

What happens when hydrogen reacts with chlorine in direct sunlight

Answer»

It forms hydrogen chloride or hydrochloric acid (HCL)


hope it is HELPFUL to U.

8.

What is tetrahedral nature of carbon in organic chemistry?

Answer»

Tetrahedral carbon is a carbon atom with FOUR ATTACHMENTS and BOND angles of APPROXIMATELY 109.5°..

9.

Naem the process where plastic undergoes thermal degradation in absence of oxygen at high temperature

Answer»

Pryolysis is the NAME of this PROCESS

10.

Which is the first manmade elements in a periodic table

Answer»

Technetium is the FIRST MAN MADE ELEMENT in the periodic table.

11.

One example from my everyday life of a physical change that is reversible

Answer» MELTING of ICE is a REVERSIBLE PHYSICAL CHANGE
12.

What happens when sodium carbonate is heated in absence of air give chemical equation?

Answer»

Baking soda, or SODIUMBICARBONATE (NaHCO3), is achemical that can undergo a decomposition reaction whenheated. ... Only sodium carbonatewill remain as a solid product. Both carbon DIOXIDE and water are gaseous at the warm TEMPERATURE, which means that they will disappear into the surrounding AIR.

13.

To carry out reactions between iron and copper sulphate solution and to study the observation

Answer» FE + CUSO4 - FESO4 +CU
14.

What are fossil fuels in short answer hi

Answer»

A NATURAL FUEL such as coal or oil, that was formed millions of years AGO from dead animals or plants in the ground is KNOWN as fossil FUELS

15.

Soaps are formed by saponiication of.A. AlcoholB. GlycosidesC. Simple estersD. Carboxylic acids

Answer»

It' s D -- CARBOXYLIC acig

16.

Which gas is called as laughing gas?

Answer» NITROUS OXIDE (N2O) is called LAUGHING gas.
17.

What is the electronic configuration of uranium

Answer»

Your ANSWER is: (RN) 5f3 6d1 7S2

18.

Please send me the question paper of class 8 2nd terminal

Answer»

Rather than asking all these just study UR text and U will SCORE marks easily

19.

What is the hybridization of Nacl

Answer» NACL has a ROCK SALT structure.
So,its HYBRIDISATION is sp3.
Hope it HELPED.
20.

Which of the following is. Not an oxidising agent?Na+,(CRO4)2-,ozone

Answer»

All of them is OXIDISING AGENT

21.

Anyone knows this ans.

Answer»

Hola User___________________

Here is Your ANSWER..!!!
____________________________

⭐Actually welcome to the CONCEPT of the COORDINATION COMPOUND

⭐1) Basically the first compound is the ACETAL CHLORIDE ....basically used as the Friedal krafts Asylation REAGENT

⭐2) The compound is ... 〽SODIUM HEXAAQUA ALUMINA(III) 〽

⭐3) THE compound is ... 〽HEXAAQUA ALUMINA (III) CHLORIDE 〽

_____________________________
Hope it helps u...☺

22.

What is the electronic configuration and valency for uranium

Answer» HEYA mate here is your answer ⬇️⬇️⬇️⬇️
the distribution of electrons of an atom or molecule in atomic or MOLECULAR orbitals. For example, the electron CONFIGURATION of the neon atom is 1s² 2s² 2p⁶
Valency of uranium=6
23.

72.5 g of phenol is dissolved in 1 kg of solvent (kf=14) depression in freezing point is 7 k find the % of phenol that dimersises

Answer» MB =  

Taking the solvent as 1 kg

Mb =  

= 150.4 g per mol

phenol (molar MASS) — 94 g/mol

i =  

i = 94 / 150.4 = 0.625

 

We have, 2C6H5OH ↔ (C6H5OH)2

1 0

1- α α/2

Total = 1- α + α/2

i = 1- α/2

0.625 = 1- α/2

α/2 = 0.375

α = 0.375/2

α = 0.75

% of phenol that dimerizes = 75%

24.

In which group the elements required for organic things and inorganic things is present?

Answer»

The most common elements present in organic compounds are CARBON, hydrogen, oxygen, and nitrogen. With carbon and hydrogen present, other elements, such as phosphorous, sulfur, SILICON, and the halogens, MAY exist in organic compounds. Compounds that do not PERTAIN to this RULE are called inorganic compounds

25.

Iron nails when dipped in blue copper sulphate solutions becomes brownish in colour and blue copper sulphate solution is converted to light green

Answer»

Here DISPALCEMENT REACTION TAKES place where iron displaces copper from its SALT SOLUTION.

26.

What do mean by resonance effect

Answer»

The resonance EFFECT can be defined as a chemical phenomenon which is OBSERVED in the characteristic compounds having DOUBLE BONDS in the organic compounds.

27.

The reaction of Br2 with Na2CO3 in aqueus solution gives sodium bromide and sodium bromate with evolution of CO2 gas. The number of sodium bromide molecules involved in the balanced chemical equation will be ?

Answer»

ANSWER: 5 moles of sodium bromide molecules are produced in the GIVEN CHEMICAL reaction.

Explanation: For the reaction of bromine and sodium carbonate, the BALANCED chemical reaction will be:

3Br_2+3Na_2CO_3\rightarrow 5NaBr+NaBrO_3+3CO_2

By Stoichiometry,

3 moles of bromine REACTS with 3 moles of sodium carbonate to produce 5 moles of sodium bromide, 1 mole of sodium bromate and 3 moles of carbon dioxide gas.

From the above stoichiometry, it is visible that 5 moles of NaBr are produced in the given chemical reaction.

28.

What is a true solution

Answer»

A true SOLUTION is a HOMOGENEOUS mixture and the solute mixes well in it.
Example- SUGAR and WATER, salt and water.
Thanq .
Hope it HELPS..

29.

Which of following order is incorrect?A. s-> p-> d-> f->B. Li< Be< B< C< N ; Nonmetallic characterC. Li< Na< K< Rb< Cs; metallic characterD. O+ < O < O-; Zeff order

Answer» B. NONMETALLIC CHARACTER is a RIGHT ANSWER
30.

The ratio of coper and nickel by weight in the two alloys x and y ate 2:7 and 5:4.How many kilograms of the alloy x and y ate required make 42 kg of new alloy z in which the ratio of copper and nickel is same

Answer»

I HOPE it will HELP U

31.

Write a short note on silicates.

Answer» HEYA mate here is your answer ⬇️⬇️⬇️⬇️
In short, silicates are minerals that have silica (SiO2) as a main component within their molecular structure.
There are different GROUPS of minerals, such as oxides, hydroxides, and silicates. Oxides have OXYGEN (O) as the main anion within the molecule that makes up the mineral. Hydroxides have water (or at least OH) as the main anion, while silicates have silica as the main anion.
It may help to GIVE some examples. Magnetite is an oxide (Fe3O4), rust is an hydroxide (FeO(OH), Fe(OH)3).
hope it helps Mark as BRAINLIEST if you like and follow me
32.

Which of the following elements has the largest atomic radius?a. titaniumb. ironc. chromiumSelected: d. krypton

Answer»

Krypton is a noble GAS and so for ATOMIC RADIUS van DER Waals radius is considered which is more than covalent radius of other elements

33.

What is emissions spectrum?

Answer»
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WHEN THE RADIATION EMITTING FROM SOME SOURCE IS PASSED DIRECTLY THROUGH THE PRISM AND THAN RECIEVED ON THE PHOTOGRAPHIC PLATE THEN SPECTRUM OBTAINED IS CALLED EMISSION SPECTRUM.


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\bold{ \huge{ \purple{thanks..........}}}
✌☺


\bold{ \mathcal{ \red{NÃVÏ  \: HARYANVI}}}
❤❤
34.

Write the general formula of hydrocarbon alkane write the name of simplest alkane

Answer»

The general FORMULA for alkanes is CNH2N+2; the simplest POSSIBLE alkane is therefore methane, CH4. The next simplest is ETHANE, C2H6; the series continues indefinitely. Each carbon atom in an alkane has sp³ hybridization. Alkanes are ALSO known as paraffins, or collectively as the paraffin series.

35.

CH3CH2CH2CN iupac name

Answer» HELLO there!

____________

Its iupac NAME is

\huge\red{Propylcyanide}

It has three carbons and 7 hydtogen so it is called propyl and CN is called cyanide .

______________

INSHALLAH IT WILL HELP U
36.

Plz do ans this as fast as possible..

Answer» 1. acids: BARIUM CHLORIDE, SODIUM chloride, h2so4 and hno3
bases: AMMONIUM hydroxide, sodium hydroxide.
37.

Temperature at which water change to water vapour___________ (fill it )

Answer»

It will be 100 DEGREE CELSIUS.

38.

What is ranciditywhat is coal

Answer» RANCIDITY is a term GENERALLY USED to know about the stage when the things like chips , become unable to eat due to oxygen. oxygen MAKES the things rancid(damage).
39.

Guys koi help karr do please please jaldi please

Answer»

(a) Ethanol ( ethyl ALCOHOL )
(b) Ethanal ( acetaldehyde )

PLEASE NOTE the WORDS within the bracket are common names

40.

Preparation of polyethylene

Answer»
Polyethylene is the most COMMONLY used form of plastic. It is used to make plastic bags, BOTTLES and children's toys. Like other plastics, it is composed of polymers, or long chains of molecules. In this case, the molecules are made entirely of carbon and hydrogen atoms. You can make polyethylene by purifying a quantity of ethylene, known as the feedstock, before adding a catalyst. This will begin a reaction that causes the ethylene molecules to form the polymer polyethylene.
Purify the ethylene feedstock. During the manufacture of ethylene, this monomer can pick up many impurities, such as moisture, sulfur and ammonia. Further impurities can occur during storage and transportation. Run the ethylene through a PURITY regulator. This device will mix several gases with the feedstock ethylene under high pressure and draws off the impurities and foreign matter. At the end of the purification process, pass the ethylene into the reaction tank.

Add a catalyst to the purified ethylene. A typical catalyst used in this process is benzyl peroxide. The molecules in benzyl peroxide have the ability to fall apart. A benzyl peroxide MOLECULE breaks down into two pieces, each with an unpaired electron. This type of molecule fragment is called a FREE radical. The unpaired electron in a free radical will now search for electrons to pair with in the ethylene feedstock.

Allow the benzyl peroxide to react with the ethylene. Since the fragments of the catalyst molecules take electrons from the previously stable ethylene molecules, the latter now try to replace their missing electrons by taking electrons from other ethylene molecules and forming a bond with them. Each time this happens, an electron gap occurs and must be filled by bonding with yet another ethylene molecule. Provided there are few impurities in the feedstock, this process can go on for a long time.

Add more catalyst whenever the reaction begins to slow. This will occur as growing chains of molecules find each other and join, ending the search for electrons to fill the gaps created by the initial reaction. More catalyst will restart the reaction.

Pour the polyethylene into a pelletizer. This machine will shape small amounts of polyethylene into pellets for storage and transportation. These tiny pellets can then be reheated and formed into whatever shape is needed.


41.

What is the atomicity of o in o3

Answer»

ATOMIC it of O in O3 is TETRA-ATOMIC

PLZ MARK AS BRAINLIEST

42.

The number of oxygen atoms present in 50 grams of calcium carbonate is

Answer»

There are 9.033×10^3 oxygen atoms present in 50 GRAMS of CALCIUM CARBONATE

43.

Hydrogen bonding can occuer between molecules of hcho and the molecules of liquid ch3oh

Answer»

No HYDROGEN BONDING OCCURS

44.

What is meant by isobars and isotopes?

Answer» ANS:  ISOTOPES: The atoms which POSSES same atomic number (the atoms same element) but different mass number are called Isotopes. Ex: ₁H¹,₁H², ₁H³  These are the isotopes of Hydrogen. The difference in mass number is due to different number of neutrons present in the NUCLEUSISOBARS: The atoms which posses different atomic number with same mass number are called Isobars. Ex : ₁₈Ar⁴⁰,₂₀Ca⁴⁰
45.

Calculate Ph of M Hcl

Answer»

.............................
MARK BRAINLIEST..

46.

Explain how lightning takes place???

Answer»

Lighting is just a phenomena of electrostatics.
Its ACTUALLY a discharge of charges. When there is a high land and clouds are near them then we know earth is FULL of ELECTRONS so the postive charges induced in LOWER part of the clouds and hence lighting occures.

47.

What is the exceptions of general properties of metal and nonmetal

Answer»

Metals:-
mercury EXIST as liquid in room temperature
gallium and caesium has low MELTING point
lithium, sodium and POTASSIUM are very soft.
non metals:-
iodine has a lutrous property
diamond has a very high melting and boiling points
graphite is a gud CONDUCTOR of electricity..
hope it HELPS u..

48.

Chlorine (Cl) has nine electrons. How many electrons are in the n=1 shell?

Answer»

In n=1 MEANS K SHELL there MUST be 2 electrons.

49.

The gas produced through the reaction of aluminium carbide and water is

Answer»

hello friend ! here is your answer....☺☺

the GAS produced through the reaction of aluminium CARBIDE and WATER is aluminium hydroxide and methane.

hope it HELPED :)

50.

What is resonence? explain plzzzz

Answer»

In physics, resonance is a phenomenon in which a vibrating system or EXTERNAL force drives another system to oscillate with greater amplitude at a limited range of frequencies. Specifically, resonance occurs when the frequency of the applied force is close to one of the natural frequencies of vibration of the driven system.

Frequencies at which the response amplitude is a relative maximum are KNOWN as the system's resonant frequencies or resonance frequencies. Near resonant frequencies, small periodic driving forces have the ability to produce large amplitude oscillations, due to the storage of vibrational energy.
Resonance, in chemistry, refers to contexts in which one or more electrons contribute to more than one bond in a molecule, and are not considered local to any one of the bonds they contribute to.

A most common example is found in the resonant bonds between the carbon atoms of benzene rings. When benzene is illustrated with a Lewis structure, each carbon is shown sharing a single bond with one neighboring carbon, and a double-bond with the other. There are two possible WAYS of illustrating the benzene ring by this description.

Each of these two possible ways is referred to as a contributing structure. Neither ACCURATELY depicts the REALITY of the molecule, as six of the electrons are delocalized across a pi system—a combination of the contributing structures, the combination placing associated electrons at a lower energy state than any one of the contributing structures would have the electrons in.


Hope so it is enough and may help you:)...