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.

addition of tollens reagent to propanal gives silver mirror whereas with propanol doesn't give reason

Answer»

Tollen REAGENT is a test for aldehydes an not alcohols therfore prapnol those not GICE silver mirror
hope this helps any DOUBT please COMMENT

2.

WRITE THE NAMES OF THE FOLLOWING COMPOUNDS (i) Kclo3 (ii) H2SO3

Answer» KCLO3- POTASSIUM Chlorate
H2So4- SULPHURIC ACID
3.

Why rich fuel mixture is used in petrol engines?

Answer» HEY..THERE

It is because the stiochiometric ratiofor diesel engines is higher thangasoline engines. The fuel air MIXING takes in the combustion chamber itself and is not a HOMOGENEOUS mixture. The diesel fuel is SPRAYED through injector nozzles. Thus the air fuelratios are higher which makes themixture lean.
HOPE IT HELPS U✌
4.

What is the significance of FLD in sheet-metal

Answer» HLO frd..HOPES the above ans HELPS uh
5.

Chemistry of sugar over acn and water mixture

Answer» DUTY teeth Greg BUY REACH HUGGED CFB cffnh fddd
6.

Which of the following statements is incorrect for a photosynthesis process?1 sunlight and chlorophyll are the necessary requirements2. Oxygen is required for the process3. Oxygen is produced in reaction4. Carbon dioxide and water are the reactants

Answer»

Hii There!!


OPTION 2) is incorrect one as in the reaction, oxygen and water is RELEASED as end PRODUCTS and sunlight , chlorophyll and CO2 is necessary for the reaction.


Hope it helps

7.

Give example of corrosion where it is an advantage

Answer» CORROSION of ALUMINUM is an ADVANTAGE as it PREVENTS the further corrosion of the METAL.
8.

Can someone plz answer 12th one

Answer»

Delocailised PI ELECTRONS is ANSWER

9.

whaen copper sulphate reacts with conc. sulphuric acid it will form white amorphous powder or white anhydrous powder

Answer»

Here is your answer buddy:
when COPPER REACTS with concentrated sulphuric acid it will form it forms pure blue ANHYDROUS white powder.
here is the balanced equation:
CuSO4.5 H2O + conc. H2SO4 (aq.) gives CuSO4 (s) + SO2 (g) + H2O (l)
HOPE it helps you!!!!

10.

Why shielding effect of electrons make cation formation easy

Answer»

The shielding effect REDUCES the IONIZATION ENERGY and so makes CATION formation easier

11.

Please someone provide correct solution

Answer»

9.1multiplied by 10raised to 8 is the ANSWER

12.

What is acid radical and base radical of barium sulfate.

Answer» ACID RADICAL is SULPHATE and BASIC radical is BA2+
13.

Flux is used during smelting :A.To reduce the metallic oxideB.to decrease the fusion temperatureC.to remove impuritiesD.to make the ore porous

Answer»

Here is your ANSWER :

C) To REMOVE IMPURITIES

14.

Name the chemical reaction in which two reactants combine to form a single product.

Answer»

It is CALLED COMBINATION REACTION
example
C +O2=co2

15.

Natural rubber on complete hydrogenation gives ??

Answer»

a PRODUCT that is indistinguishable from the product of the COMPLETE ...try to MAKE it as a brainliest ANSWER

16.

Which of the follwing anion do not hydrolyse

Answer» HEY there is no OPTION.
17.

Flux is used during smelting to _______

Answer»

I THINK it's ANSWER is COPPER

18.

Name of tools used for characterization of nanomaterials

Answer»

Electronmicroscopy is USED for CHARACTERIZING NANOMATERIALS

19.

Hi Guys, How was the chemistry section in Assam CEE 2018? Was it easy?

Answer»

No , it was not so EASY

20.

Generally liquids have low density,than solidsbut you must have observed that ice floats on water why?

Answer» HEYA !!

ICE is Less Denser than Water . In water hydrogen atoms are attracted the negatively-charged oxygen atoms of nearby water MOLECULES. So , Water is more denser than Ice.

So , Ice FLOATS on water. ✌☺
21.

We can easily move our hand in air but to do the same through a solid block of wood we need a karate expert?

Answer»

Hey mate. .....☺.

Here's ur ans.

We can EASILY move our hands in air DUE to the intermolecular space WHEREAS to do same with solid we need karate expert as there is no intermolecular space.

Hence , it REQUIRES force to MAKE the space .

22.

Why is the heat evolved in neutrilization of HF is highest

Answer»

First of all, Hydrofluoric acid is CALLED a weak acid because its dissociation constant is lower than other "STRONG" acids. Its ionization is not as high as most acids because of the very tight bonding between the H and F. It can give a deceptively high pH, even when it is at high concentration because of the tight bonding between the TWO very small ions.

If you ever DEAL with this acid, you need to be EXTREMELY careful since the vapors can give you chemical pneumonia that can be fatal and skin contact can kill you through interfering with calcium metabolism in the body. HANDLING it deserves more respect than any other acid

23.

Examples of the difference between polynomial and equations

Answer»

An example of apolynomial of a single indeterminate x is X2 − 4x + 7.


example, this linearequation: x + 1 = 4 means that when we add 1 to the UNKNOWN value, 'x', the answer is EQUAL to 4.

24.

Ethyle glycol is the starting material of

Answer»
25.

What is glyserine made of

Answer»

Glycerin is an ORGANICCOMPOUND known more formally as GLYCEROL. Its common sources are animal FAT andvegetable oil. Glycerin is a clear, odorless liquid at room temperature, and it has a sweet taste. It's most commonly used in SOAP and is also a common INGREDIENT in many pharmaceuticals.

26.

Why has phenol higher boiling point then toluene

Answer»

Hey buddy here is ur answer.......
'' boiling POINT'' of a compound is directly proportional to its''molecular WEIGHT"
M.W. of PHENOL is more than toluene so it has more b. p.


HOPE hlp
any QUESTIONS ask in comment

27.

Vapour Density of a gas mixture containing cH4&n2 in molar ratio is 1:3is

Answer»

VAPOR density = MOLECULAR mass/2
it means ratio of vapor density is DIRECTLY proportional to molecular mass.
So, ratio of vapor density = ratio of molecular mass.

Given, ratio of molecular mass of CH₄ and N₂ is 1 :3
so , ratio of vapor density is also 1 : 3

28.

What is attractive potential energy between electrons?

Answer»

A FREE electron having ZERO ATTRACTIVE POTENTIAL energy is the most convenient.

29.

Calculate the enthalpy of reaction for hydrogenation of ethylene to ethane

Answer»

6kstjztjzykdyjzrhzthxyjxjtEhztjztjsthstjdo6fouf

30.

Calculate the weight of co having the same number of oxygen atoms as are present in 22 gram of co2

Answer»

Ydxr6xdxdtxdtxr6c6ct7 fut7vy

31.

Why is aniline less basic than methylamine

Answer»

Hey Friend..... :-)

Here is Your answer

Aniline or Phenylamine is a amine group attached to a phenyl group, or C6H5NH2. The ring STRUCTURE possesses resonance. Electrons are delocalised from individual ATOMS and their position varies around the structure. The source of the basicity of the amine group is the LONE pair on the nitrogen atom. This lone pair can form a DATIVE COVALENT bond with a H+ ion. But in Aniline, the lone pair on the nitrogen is also delocalised. It loses the lone pair to resonance, and so cannot donate an electron to a proton, and therefore loses a lot of its basicity. Methylamine, CH3NH2, on the other hand does not possess resonance, and the lone pair on the nitrogen is in place, so it can accept protons, making it basic.

Hoping it helps 

Thanks :D


32.

How does air have no fixed volume

Answer»

It has no fixed volume because some where it can be humid somewhere fresh and LIGHT somewhere it can contain RAIN DROPS, moisture.

33.

Answer for above question

Answer»

Hey ur answer is here...
a. NA, Si, P,
b. Be, N,
c. O
d. Al
e. Cl
f. Li
g. Na
h. F

34.

Distinguish between the light dependent reactions and carbon fixation reactions of photosynthesis

Answer» LIGHT DEPENDENT reactions are DIRECTLY dependent on light but CARBON fixation reactions are dependent upon products of light reactions
35.

How is bromine produce?

Answer»

It is PRODUCED by direct reaction of CHLORINE with brine RICH in BROMINE ions

36.

Convert the following temperature to celsius scale 450k

Answer»

It cannot be BECOZ its TEMP is HIGHER then 273

37.

Why dz2 orbital does not have two nodal planes

Answer»

D orbital have S10 ELECTRONIC configuration in the valence SHELL

38.

By giving examples define three state of matter

Answer» SOLID EX. Brick
Liquid ex. Water
Gas ex. HYDROGEN
39.

Hydrogen does not reduce

Answer» HYDROGEN does not reduce in CuO as hydrogen is highly reactive than copper.
Hope it HELPS U DEAR
40.

Difference between solution bounded and unbounded solution

Answer»

As the name suggests BOUNDED solution are those who have limited or have cap on there range (range of a solution implies the OUTPUT it can give ) for EG sin,COS etc .

Unbounded solution are OPPOSITE of that of bounded solution .They have infinity in there range .

41.

Difference betweenpulveriser and micro pulveriser

Answer»

A pulverizer is a mechanical device for the grinding of many DIFFERENT types of MATERIALS

Micro Pulverizer is a high efficiency, economical unit designed for dry or wet grinding to any specified fineness upto 250 - MIRON mesh as well as for smooth blending OPERATIONS. It is a close CLEARANCE, highspeed, compact Mill ideal for grinding a wide RANGE of abrasive, nonabrasive and fibrous materials.

42.

Which among following acid has the highest reactivity with the water?

Answer» HEY buddy here is UR ANSWER.....
CH3COOH has highest REACTIVITY with water because it makes hydrogen bond with water.
HOPE it will help u.
43.

Due to sublimation why did caryons does't change in gaseous state ?

Answer» CARYONS cannot SUBLIMATE
44.

Difference between hydrolytic and oxidative rancidity

Answer» RANCIDITY means the chemical deterioration of fats. It occurs when the TRIGLYCERIDE molecule or fatty acids are attached to the glycerol molecule. Thus the glycerol molecules are broken down into smaller units.

HEY USER HERE IS UR ANSER IN THE FORM OF A PIC.

HOPE IT'S HELP YOU TO
45.

Why do gas not have a fixed volume or fixed shape

Answer»

This is because the INTERMOLECULAR force of ATTRACTION of GASES is very weak and their intermolecular SPACE is very high.


  HOPE this helps u...

46.

Naphthalene ball disappear if kept in air for a few weeks why

Answer»

Naphthalene balls undergo SUBLIMATION due to which it CONVERTS DIRECTLY into vapours and disappear into AIR without leaving any solid

47.

A :HCOOH is about ten times stronger than CH3COOH while CH3CH2COOH CONTAINING a larger alkyl group is weaker than CH3COOH.R:Electron relasing alkyl groups weaken acid .

Answer» ASSERTION and RESON are CORRECT
48.

Difference between absorption and adsorption chromatography

Answer» Adsorption — takes place on the surface of a substrate
Absorption — one substance ENTERS the bulk, or VOLUME, of another substance e.g. a gas ABSORBED by a liquid

It is important to have an understanding of both processes and the differences between them when considering separation protocols, particularly in gas and liquidchromatography. The MAJOR DIFFERENCE between adsorption and absorption is that one is a surface process and the other a bulk process.
49.

What is ground state of atom

Answer» GROUND STATE is the state of an atom in which it LIES UNDISTURBED and the valence shell electrons can not be TRANSFERRED to other orbital.

Hope this helps
50.

What are total spins???

Answer»

Total spin of an atom or molecule. For some atoms the spins of several UNPAIRED electrons (S1, s2, ...) are coupled to form a total spin quantum NUMBER S. ... Here L is the total ORBITAL angular MOMENTUM quantum number. For atoms with a well-defined S, the multiplicity of a state is defined as (2S+1).

HOPE IT'S HELP YOU