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.

a gas occupies 25 ml at 3 atm. at - 23 degree celsius calculate the pressure need to reduce the volume to 50 ml at 200kelvin plz help mee

Answer»

ANSWER:

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2.

N2 3h2 2nh3 balance the equation

Answer»

ANSWER:

Yes, the EQUATION is BALANCED. There are the same number of Nitrogen (N) and Hydrogen (H) atoms on each SIDE of the equation.

Explanation:

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3.

Acceleration acts always in the direction __________ * 1 point

Answer»

Explanation:

Keep in MIND that although acceleration is in the DIRECTION of the change in VELOCITY, it is not always in the direction of motion. When an object slows down, its acceleration is OPPOSITE to the direction of its motion. This is known as deceleration.

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4.

Can anyone tell me all the compound radicals? List of all the compound radicals?

Answer»

Answer:

Explanation:

The hydroxyl radical, Lewis STRUCTURE SHOWN, contains one unpaired electron. In chemistry, a radical is an atom, MOLECULE, or ion that has an unpaired valence electron. ... Such RADICALS can even be messengers in a PROCESS dubbed redox signaling. ... Generally organic radicals are stabilized by any or all of these factors

5.

What is the difference between steel and Aluminium ?​

Answer»

Answer:

Even the possibility of corrosion,STEEL is harder than aluminum.Most spinnable tempers and ALLOYS of an aluminum DENT,ding or scratch more easily and COMPARED to steel.Steel is strong and likely warp,deform or bend underweight, force or heat.......steel is TYPICALLY 2.5 denser than aluminum.

6.

UROut of [CoF.] and [Co(C204)31?, which one complex is(i) diamagnetic(ii) more stable(iii) outer orbital complex and(iv) low spin complex?(Atomic no. of Co= 27)​

Answer»

ANSWER:

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7.

In a face centred lattice of X and Y, X atoms are present at the corner while Y atoms are at the face Centre. what would be the formula of the compound if one of the X atoms from a corner is replaced by Z atom?​

Answer»

EXPLANATION:

X me 7/8 HAI................

8.

What is responsible for the following:(a) Skin diseases (b) Jaundice(c) Birth defects (d) Death of birds in water​

Answer»

ANSWER:

For what?

EXPLANATION:

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9.

9.2gm of ethyl alcohol,3.6gm of acetic acid, 1.1gm of ethyl acetate and 9.0gm of water were mixed and allowed to attain equilibrium.If Kc_4, what was the concentration of the resulting mixture..?​

Answer»

ANSWER:

This is only 5 POINT do it in 50 point

10.

How many litres of 20 % (mass/volume) sugar solution would it take to get 80 g of sugar

Answer»

ANSWER:

Given:

CONCENTRATION of sugar solution in mass/volume=15%

Mass of solute (sugar),

m=75gm

Calculating the volume of solution,

20V×100=15

⇒V=3

ml=0.3L

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11.

Find the total number of proton electron and neutron in 0.192gm of sulphur

Answer»

Answer:

the NUMBER of protons in 0.192g = 16 x 1.156 x 10^23 = 18.5 x 10^23

and the number of ELECTRONS is the same.

the number of NEUTRONS in 0.192g is 18.5x 10^23 x 16.06 / 16 = 18.57 x 10^23

Explanation:

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12.

Saw dust from water can separated by

Answer»

ANSWER:

filtration

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13.

. Find the odd one and give reason:mud in water, chalk in water, oil and water, air

Answer»

ANSWER:   MUD

EXPLANATION:

14.

Q.2 (MCQs) Tincture of iodine has antiseptic properties. This solution is made by dissolving: (a) iodine in potassium iodide (b) iodine in acetone (c) iodine in water (d)iodine in alcohol

Answer»

Answer:

Tincture of IODINE has antiseptic PROPERTIES. This solution is made by DISSOLVING:iodine in water

15.

What causes the change in the arrangement of the particles.

Answer»

Answer:

It MAY be because of environmental factor

Explanation:

When we HEAT the particles they gain KINETIC energy and moves here and there.

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16.

CombustionHow does the burning of fuels cause acid rain?​

Answer»

Answer:

IMAGE result for How does the burning of fuels cause acid rain?

Acid rain is caused by a chemical reaction that begins when COMPOUNDS like sulfur dioxide and NITROGEN oxides are released into the air. ... Power plants release the majority of sulfur dioxide and much of the nitrogen oxides when they burn FOSSIL fuels, such as coal, to produce electricity.

Explanation:

17.

Atomic mass of Rubidium?​

Answer»

Explanation:

Atomic MASS: 85.4678 u

Symbol: Rb

Electron configuration: [Kr] 5s1

atomic mass of RUBIDIUM is 37

18.

Which one is the odd in between Helium,Sodium, Neon, Chlorine?

Answer»

The answer is sodium (NA) because sodium is from first group while the other ELEMENTS are NOBLE gases.

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19.

Why are the elements of the fourth, fifth and sixth stages in Mendeleev's periodic table divided into a pair and a pair of series?

Answer»

Answer:

1)There are 9 groups(0 , 1 , 2 ,3 , 4 , 5 , 6 , 7 , 8) and 7 periods.

2)Groups 1 to 7 have been DIVIDED into two subgroups - A and B.

3) group zero consist of NOBLE gases .

4)Group 8 consist of 9 elements which are arranged in 3 triads.

Explanation:

20.

Chemicals that show whether the given solution is acid or base, by sudden change of colour is called _____________. (1 mark)

Answer»

Your ANSWER is INDICATORS

21.

The concentration term which is temperature is answers

Answer»

Answer:

The concentration terms that are "INDEPENDENT of TEMPERATURE" are MOLALITY and MOLE FRACTION.

22.

Heterogeneous mixture is impure

Answer»

ANSWER:

MIXTURE is an impure SUBSTANCE. mixtures are Heterogenous. Their constituents are not combined chemically but only physically.

Explanation:

23.

What is Friedel-Crafts alkylation and Friedel-Crafts acylation reactions? Explain with examples

Answer»

Answer:

Hope it helps you.....

Explanation:

A FRIEDEL-Crafts reaction is an organic coupling reaction involving an electrophilic aromatic substitution that is used for the attachment of substituents to aromatic rings. The TWO PRIMARY types of Friedel-Crafts reactions are the alkylation and acylation reactions. These reactions were DEVELOPED in the year 1877 by the French CHEMIST Charles Friedel and the American chemist James Crafts.

24.

Who was William Prout?​

Answer»

Answer:

William Prout FRS was an English chemist, physician, and natural theologian. He is remembered today MAINLY for what is CALLED Prout's HYPOTHESIS.

25.

Name all the elements present in the following compounds SO2 pbcl2 B A O H to l i f

Answer»

Explanation:

Although most compounds are referred to by their IUPAC systematic names (following IUPAC nomenclature), traditional names have also been KEPT where they are in wide use or of significant historical interests.

Edit

AcCl3,

AcF3,

Ac2O3

Al Edit

Aluminium antimonide – AlSb

Aluminium arsenate – AlAsO4.8H2O

Aluminium arsenide – AlAs

Aluminium boride – AlB2

Aluminium bromide – AlBr3

Aluminium carbide – Al4C3

Aluminium iodide – AlI3

Aluminium nitride – AlN

Aluminium oxide – Al2O3

Aluminium phosphide – AlP

Aluminium chloride – AlCl3

Aluminium fluoride – AlF3

Aluminium hydroxide – Al(OH)3

Aluminium nitrate – Al(NO3)3

Aluminium sulfide – Al2S3

Aluminium sulfate – Al2(SO4)3

Aluminium potassium sulfate – ALK(SO4)2 potassium alum

Am Edit

AmBr2,

AmBr3,

AmCl2,

AmCl3,

AmF3,

AmF4,

AmI2,

AmI3,

AmO2

NH3/NH4+ Edit

Ammonia – NH3

Ammonium azide – NH4N3

Ammonium bicarbonate – NH4HCO3

Ammonium bisulfate – NH4HSO4

Ammonium chromate – (NH4)2CrO4

Ammonium cerium(IV) nitrate – (NH4)2Ce(NO3)6

Ammonium cerium(IV) sulfate – (NH4)4Ce(SO4)4

Ammonium chloride – NH4Cl

Ammonium CHLORATE – NH4ClO3

Ammonium cyanide – NH4CN

Ammonium dichromate – (NH4)2Cr2O7

Ammonium dihydrogen PHOSPHATE – NH4H2PO4

Ammonium hydroxide – NH4OH

Ammonium hexachloroplatinate – (NH4)2(PtCl6)

Ammonium nitrate – NH4NO3

Ammonium orthomolybdate – (NH4)2MoO4

Ammonium sulfamate – H6N2O3S

Ammonium sulfide – (NH4)2S

Ammonium sulfite – (NH4)2SO3

Ammonium sulfate – (NH4)2SO4

Ammonium perchlorate – NH4ClO4

Ammonium permanganate – NH4MnO4

Ammonium persulfate – (NH4)2S2O8

Ammonium tetrathiocyanatodiamminechromate(III) – NH4[Cr(SCN)4(NH3)2]

Ammonium thiocyanate – NH4SCN

Ammonium triiodide – NH4I3

Diammonium dioxido(dioxo)molybdenum – H8MoN2O4[1]

Diammonium phosphate – (NH4)2HPO4

Sb Edit

Antimony hydride – SbH3

Antimony PENTACHLORIDE – SbCl5

Antimony pentafluoride – SbF5

Antimony potassium tartrate – K2Sb2(C4H2O6)2

Antimony sulfate – Sb2(SO4)3

Antimony trifluoride – SbF3

Antimony trioxide – Sb2O3

Antimony trisulfide – Sb2S3

Antimony pentasulfide – Sb2S5

Ar Edit

Argon fluorohydride – HArF

As Edit

Arsenic trifluoride – AsF3

Arsenic pentafluoride – AsF5

Arsenic trioxide (Arsenic(III) oxide) – As2O3

Arsenous acid – As(OH)3

Arsenic acid – AsO(OH)3

Arsine – AsH3

26.

H,Li,Na,K ( decreasing order of non metallic character

Answer»

Explanation:

As we MOVE down the group atomic radius INCREASES so the metallic CHARACTER ALSO increases.

Hence the ORDER is: Li

27.

Which of the following does not have a band spectrum?A)HydrogenB)OxygenC)Helium D)Nitrogen

Answer»

Only HELIUM can MAKE SPECTRUM BAND therefore hydrogen, Oxygen, Nitrogen cannot have a band spectrum.

28.

Find odd one in sodium, magnesium, aluminium, silicon​

Answer»

ANSWER:

Silicon

Explanation:

I MERELY GUESSED it

29.

What information is obtained from the cathode ray experiment about the structure of atom​

Answer»

Answer:n the year 1897 J.J. Thomson INVENTED the electron by PLAYING with a tube that was Crookes, or CATHODE RAY. He had shown that the cathode RAYS were charged negatively. Thomson realized that the accepted model of an atom did not account for the particles charged negatively or positively.

Explanation:

30.

How can we classify salts on the basis of their solubility in water? Give examples

Answer»

ANSWER:

If it GET DISSOLVED than its SOLUBLE and if not it is insoluble

Explanation:

31.

100 મિલી. 0.3N HCL દ્રાવણને 200 મિલી 0.6 NH,SO,સાથે મિશ્ર કરતા અંતિમ દ્રાવણમાં H SO, ની સમપ્રમાણતાકેટલી થાય છે ?(1) 0.9(2) 0.6(3) 0.5(4) 0.4​

Answer»

ANSWER:

I am not UNDERSTANDING your LANGUAGE

EXPLANATION:

SORRY

32.

What is the shortest wavelength line in the Paschen series of Li2+ ion???​

Answer»

No option is correct. The SHORTEST wavelength of the light EMITTED is when the electron jumps from INFINITY to 3. For Li²⁺, λ = 9/R × 3² m. = 81/R m.

33.

Define thefollowingtermsuitable diagramchromatographycrystallisation​

Answer»

Definition: Crystallization or crystallisation is the (natural or artificial) process by which a SOLID forms, where the atoms or molecules are highly organized into a structure KNOWN as a crystal.

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34.

How was it proved that the whole mass of atom is located in the centre?​

Answer»

Answer:

The proof that the BULK of the atom was at the CENTRE was the Rutherford model, which resulted by shooting a ray of beta PARTICLES (electrons) into a gold leaf, and most of these WENT straight through.

35.

What is the capital of ireland​ pls fast

Answer»

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36.

Explain in details all the factors that affects in chemical reaction.​

Answer»

Answer:The factors that affect reaction RATES are:

   surface AREA of a solid REACTANT.

   CONCENTRATION or pressure of a reactant.

   temperature.

   nature of the reactants.

   presence/absence of a catalyst.

Explanation:

37.

Writ down balance chemical equationWrite down moles or gram atomic or gram molecular mass of a substance whose quantity are given or we have to calculate in case to there are two or more atom or molecules are multiply mole or gram atomic mass or gram molecular mass by the number of atom or molecules.Write down the actual quantities of substance given. For the subst​

Answer»

Answer:

STOICHIOMETRY is a section of CHEMISTRY that involves using relationships between reactants and/or products in a chemical reaction to determine desired quantitative data. In Greek, stoikhein means element and metron means measure, so stoichiometry literally translated means the measure of elements. In order to use stoichiometry to RUN calculations about chemical reactions, it is important to FIRST understand the relationships that exist between products and reactants and why they exist, which require understanding how to balance reactions.

Explanation:

38.

Why this lewis symbol is incorrect?​

Answer»

Silicon is having 6 valence ELECTRONS in its outermost shell.
So the structure should have 6 electrons

Please check the ATTACHMENT for REFERENCE.

HOPE my answer helped you

39.

Express degree of polarity of bonds using dipole moment in diatpmic molecules. ​

Answer»

Answer:

When two ELECTRICAL charges, of OPPOSITE sign and EQUAL magnitude, are separated by a distance, an electric DIPOLE is established. The size of a dipole is measured by its dipole moment ( μ ). Dipole moment is measured in Debye units, which is equal to the distance between the charges multiplied by the charge (1 Debye EQUALS  3.34×10−30Cm ). The dipole moment of a molecule can be calculated by Equation

Explanation:

40.

A Housewife churned full cream milk with a milk churner 1. What did she observed after some time. 2. What could be the possible reason for this observation. 3. What is the principle involved in this method ? 4. List 2 other applications of this method.

Answer»

ANSWER:

I don't KNOW answer of this QUESTION

41.

The value of planks constant is 6.63 × 10^34js the velocity of light is 3.0 × 10^8 ms- which value is closest to the wavelength in nanometer of a quantum of light with frequency of 8 × 10^15s-

Answer»

Answer:

Bgvjfjgusxffavchdujewiajw2ddijwe

Explanation:

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42.

Explain why Distilled water contains a higher proportion of oxygen

Answer»

ANSWER:

Because oxygen in air has higher SOLUBILITY than other ELEMENTS in air and also there is hydrogen bonding between water and oxygen which increase its solubility

Explanation:

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43.

Define types of hydroxide with examples

Answer»

Answer:

Hydroxide is a diatomic anion with chemical FORMULA OH−. It consists of an oxygen and hydrogen atom held together by a covalent bond, and CARRIES a negative electric charge. It is an important but usually minor constituent of water.

exp. Sodium hydroxide, NAOH, also known as caustic soda or lye, is of GREAT industrial importance. Calcium, barium, and strontium—all alkaline EARTH metals—form soluble hydroxides that are strong bases but are less stable than the alkali hydroxides.

Explanation:

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44.

Where and why did Rutherford use lead box ???

Answer»

THE RADIOACTIVE MATERIAL IS KEPT ON A LEAD BOX so......

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45.

What is the genarel formula for finding the concentration of a substance

Answer»

\TEXT{C}_\text{i}=\FRAC{\text{N}_\text{i}}{\text{V}}

46.

Writ down balance chemical equationWrite down moles or gram atomic or gram molecular mass of a substance whose quantity are given or we have to calculate in case to there are two or more atom or molecules are multiply mole or gram atomic mass or gram molecular mass by the number of atom or molecules.Write down the actual quantities of substance given. For the substance whose weight/volume have to be calculated.​

Answer»

[TEX]\Huge\fbox{COLOUR}{RED}{HELLO}}[\Tex]

47.

A solute 'S' undergoes a reversible trimerization whendissolved in a certain solvent. The boiling pointelevation of its 0.1 molal solution was found to beidentical to the boiling point elevation in case of a 0.08molal solution of a solute which neither undergoesassociation nor dissociation. To what percent had thesolute 'S' undergone trimerization?(A) 30%(B) 40%(C) 50%(D) 60%​

Answer»

bskskbssmosjsbslwiywkwowiwywywkkwwos

48.

Convert to decanol to decanoic acid​

Answer»

Convert DECANOL to decanoic ACID

_______________________________________

Answer:

just add KMNO4 to it

you will get decanoic acid, SINCE KMnO4 is a very powerful oxidising agent

49.

How was the presence of proton detected and what are their characteristics​

Answer»

Answer:

how was the PRESENCE of the proton detected?

Degen's team placed a thin SLICE of the material that CONTAINED hydrogen just above the diamond crystal's surface. When they turned on the magnetic field, they observed that the brightness of the red light changed DUE to a change in magnetic fields. That highlighted the presence of a single proton nearby.

what are their characteristics?

Protons are found in the nucleus of the atom. This is a tiny, dense REGION at the center of the atom. Protons have a positive electrical charge of one (+1) and a mass of 1 atomic mass unit (amu), which is about 1.67×10−27 kilograms.

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50.

40 gram Naoh present in 1litre solution=___ N Naoh solution

Answer»

Answer:

To make 1N NaOH SOLUTION = DISSOLVE 40 GRAMS of NaOH in 1L of water. To make 0.1N NaOH solution = dissolve 40 grams of NaOH in 1L of water.

Explanation: