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 is chromatography

Answer» CHROMATOGRAPHY a technique for the separation of a mixture by PASSING it in solution or suspension through a MEDIUM in which the components move at different rates.
Hope this helps you.
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2.

Define sonority of metals

Answer»

The property of METALS of being sonorous is CALLED sonorousness orsonority. It is due to the property of sonorousness (or sonority) that metalsare USED for making bells, and strings (wires) of musical instruments like sitar and violin. 12 Metals usually have a silver or grey colour (EXCEPT copper and GOLD).

3.

Select the formulae of acids , base and salts from the following list :NaCl, NaOH, H3PO4, NaCO3 , Ca( OH) 2 , CuSO4.5H2O, H2SO4, H2SO3, HCl, NaHCO3 , Na2CO3, .10H2O, Al ( OH) 3, KCl

Answer»

Hello DEAR I am tanwi or Jitu and my best friend is vidhyasha no one can come in between us.




Nacl ,NA2CO3 is a salt

NAOH , H3PO4, Naco3, CA(OH)2 is a base


H2SO4 ,H2SO3 is a acid.

Hope it helps you dear

Thank you
If any help say me I am tanwi I am the best friend of Vidhyasha






4.

If the pressure is increased what will happen to the interparticle force and why. give one word

Answer» HEY
If pressure is increased then the particles of a substance will COME too MUCH closer to each other which will result in very high inter particular force because particles will try to GET AWAY from each other.

Hope it helps :))
5.

Fumaric acid react with water to give??

Answer»

Carboxylic acids in aqueous solution and liquid or MOLTEN carboxylic acidscan react with ACTIVE metals to formgaseous hydrogen and a METAL salt. Such reactions OCCUR in principle for solid carboxylic acids as WELL, but are slow if the solid acid remains dry

6.

Differentiate between weak base and dilute base

Answer»

It may HELP u.....
if it will help u then MARK it BRAINLIEST ANSWER

7.

दैनिक जीवन मे रासायनो का प्रयोग

Answer» 1....urvak
2..... keetnashak
8.

What happens if in an atom electron and proton swap their place

Answer»

Can you TELL what is PROTON SWAP

9.

Write name in formula one salt which contains a to molecule of water of crystal v5

Answer»

i HOPE this will HELP you



the SALT is COPPER SULPHATE



10.

5g of salt is dissolved in 25g of water.caculate the percentage amount of the salt in the solution

Answer»
11.

How much curd should be added to convert milk into curd?

Answer»

We can add a SMALL amount of CURD in milk to convert it into curd . there is a BACTERIA called as lactobaccillus which is present in curd which multiplies in milk and convert it into curd

if it is HELPFUL for you Mark me as the brainliest

12.

What is Tyndall effect ?

Answer»

The Tyndall effect is the scattering of light as a light beam passes through a colloid. The individual suspension particles scatter and reflect light, MAKING the beam visible. The amount of scattering DEPENDS on the FREQUENCY of the light and DENSITY of the particles.

13.

About. goldstien and jj thomson

Answer»

Gold STEIN is GERMAN physicts ,DISCOVERER of proton .jj.thomsan discoverer of CATHODE rays

14.

Give obe example of a method used to separate a compound into its constituent elements

Answer»

EVAPORATION and DISTILLATION.

15.

Give an experiment to show that ammonium chloride undergoes supplementation

Answer»

Hey
To see that Ammonium Chloride undergose sublimation:
1) Take a test tube which is narrow from bottom.

2 )Put some amount of NH4Cl into it and then put some cotton on thr mouth of test tube so that nothinwcan come in and also NH4 Cl goes out.
3) Now apply small amount of heat to the test tube.

You will OBSERVE that FIRSTLY the compound in tube DIRECTLY changes into GASEOUS form and then sticks to the walls of the container and solidify.

Hope it helps :))

16.

Explain why air is concerned a mixture not a compound

Answer»

Air isn't considered a pure substance because there is no one single CHEMICAL element ofcompound that forms air. Air is a MIXTURE of VARIOUS pure chemical substances, most of which exist in the gaseous state. There are PHYSICAL processes through which we can separate the various components of air.

17.

Pls give me the answer and solutions of this question

Answer»
As we KNOW mercury is of solid STATE at ROOM temprature, we can also see it in THERMOMETER
so the ordinarily it will exist in solid state
18.

How are compouds of black ink seperated by paper chromatography

Answer»

Draw some blobs of ink on paper (CRAYOLA washable CHILDREN's fiber tips are perfect), roll the paper into a cylinder, and PLACE it in a WINE glass with a small amount of water. As the water creeps up the paper, the COLORS willseparate out into their components. That's chromatography in action

19.

What is the impact of Tropic of Cancer passing through India

Answer»

The position of tropic of cancer in India is not fixed but changes in a complex manner over time. The areas that lie south of Tropic of Cancer are CLOSER to equator and throughout the YEAR, they experience very high temperature on the other hand, the northern parts lie in WARM temperature ZONE.

20.

if we move toward the core of the Earth the material changing into liquid state because of high pressure. If we compress the water than what will happen it will change in to solid or gases state explain properly

Answer» COMPRESSION of liquids forces their molecules to move CLOSER and SLOW their motion thus solidifying the liquid, but water EXPANDS in its solid state, if we try to compress water it will only FORCE its molecules to move closer and slow their motion to expand.
Therefore, we can not compress water.
21.

Why is it advisable to use pressure cooker at high altitude ?

Answer»

The high pressure ALSO helps FORCE liquid and MOISTURE into the food quickly, which helps it COOK faster and also helps certain foods, like tough MEAT, get very tender very quickly.

22.

NaHco3=Na2co3+co2+H2o balance this equation

Answer»

2NaHCo3 -- Na2Co3 + Co2 + H20

Na - 2

C - 2

H - 2

O - 6

23.

Exposure to nitrogen dioxide (no2) and respiratory disease risk.

Answer» EDEMA is a DISEASE CAUSED by NITROGEN
24.

Two elements having same number of protons and electrons but different number on neutrons

Answer»

They are isotopes



like

HYDROGEN has 3 isotopes

with the same atomic NUMBER

but having


DIFFERENT number of NEUTRONS

25.

Explain the mechanism of acid catalysed dehydration of butanol

Answer»

The mechanism of acid dehydration of ethanol to YIELD ethene INVOLVES the FOLLOWING three steps:

Step 1:

Protonation of ethanol to form ethyl oxonium ion:



Step 2:

Formation of carbocation (rate determining step):



Step 3:

Elimination of a proton to form ethene:



The acid CONSUMED in step 1 is released in Step 3. After the formation of ethene, it is removed to SHIFT the equilibrium in a forward direction.

26.

Give 3 daily-life examples of redox reaction.

Answer» INSIDE a BATTERY REDOX TAKES PLACE
27.

A covalent molecule having a triple covalent bond

Answer»

N2


N2 have TRIPLE BONDING

@SKB

28.

A covalent hydrocarbon molecule having four single covalent bond

Answer»

METHANE is a HYDROCARBON molecule having FOUR single bond

29.

an electrovalent compound formed by transfer of one electron from a metallic atom to a non metallic atom

Answer»

ANSWER:

lithium chloride

Explanation:

because atomic number of lithium is 3 and atomic number of chloride is 17 to STABLE in electronic configuration lithium TRANSFER it's ONE electron to chloride then lithium atomic number is 2 and chlorine is 18

30.

State any two characteristics of an ideal fuel

Answer»

These are
1.It has a HIGH CALORIFIC value.
2.It is ECO FRIENDLY.

31.

Calculate it for help

Answer»

I CANT UNDERSTAND......

32.

How i could know the products in a chemical reaction?

Answer»

The REACTANTS are what you START with and the PRODUCTS are the result.In CHEMICAL reaction equation the reactants are on the left side and the products are on the RIGHT.

33.

Formula of hydrogen chloride and procedure

Answer»

HCL US FARMULA of HYDROGEN CHLORIDE

34.

Explain the hybridization and shape and geometry of bf3 molecule

Answer»

The phenomenon of MIXING up of ATOMIC orbital of similar energies nd formation of EQUIVALENT no of entirely new orbital of identical shap nd ENERGY, is known as hybridization nd new orbit which are formed known as hybrid orbital.
Bf3-
Shape- trigonal
Angel- 120

35.

Give some name of the material that goes under sublimation

Answer»

Camphor,naphthalene BALLS,IODINE crystals,dry ice(CO2)

36.

Calculate it any 2 plzz

Answer» SORRY I can't understand your handwriting and in which you WRITTEN PLEASE let me KNOW it
37.

Which gass burn in air?

Answer»

: Natural gas BURNS in air to form carbon DIOXIDE and WATER, releasing HEAT. CH4(g)+O2(g)→CO2... Natural gas burns in air to form carbon dioxide and water, releasing hea

38.

Which gas burn in air?

Answer» HYDROGEN GAS BURN in AIR
39.

there are three containers a b and c which contain water milk and acid respectively in equal quantities. 10% of the content of a is taken out and poured into b. then the same amount from b is transferred to c after then the same amount from c is transferred to a. what is the proportion of milk in container a at the end of the process?

Answer» CHANGES its COLOUR SOLUTION
40.

Explain and give answer how the element sodium is monovalent

Answer»

Na LOSES one ELECTRONS become STABLE . Hence it is monovalent

41.

Which gas burn in air

Answer» OXYGEN GAS BURNS in AIR
42.

explain in brief how about of the elements other than noble gas attend stable electronic configuration of the nearest noble gas

Answer»

By SHARING, GIVING or GAINING the ELECTRONS

43.

Send 5 examples of combination reaction

Answer»

A COMBINATION REACTION is one in which two or more REACTANTS combine to form a single PRODUCT. Examples: Formation of calcium oxide by the combination ELEMENTS calcium and oxygen. Formation of ammonia by the combination of elements nitrogen and hydrogen . 

44.

Does the solute dissolve in suspension ?

Answer» SUSPENSION is a MIXTURE in which SOLUTE PARTICLES remain undissolved.

So, solute does not disolve in suspension.


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45.

What is the structure of propan 2 ol

Answer»

The FIRST on VANGUARD NEWS FROMM

46.

Explain the conservation of momentum

Answer»

The law of conservation of momentum states that for two objects colliding in an isolated system, the total momentum before and after the collision is equal. This is because the momentum lost by one object is equal to the momentum gained by the other.

Conservation of momentum is derived from NEWTON's laws of motion. Newton's third law states that every action has an equal but opposite reaction; the force that one object A exerts on object B is equal but opposite to the force that object B exerts on object A. By Newton's second law, this force is equal to the PRODUCT of the mass and the ACCELERATION of the objects, so the product of the mass and acceleration of object A is equal but opposite to the product between the mass and acceleration of object B.

Acceleration is the change of velocity divided by the TIME. Time is cancelled in the equation because in a collision, the forces act within the same time frame. Thus, the product of object A's mass and change in velocity is equal but opposite to the product of object B's mass and change in velocity. Momentum is defined as the product of mass and velocity, so finally the change in object A's momentum is equal to the opposite of the change in object B's momentum. In a nonisolated system, an external force is APPLIED during the collision, changing the original equation and causing momentum to differ before and after the collision.

47.

Which substance which do not change its state

Answer» CARBON DI OXIDE and SULPHUR di oxide
48.

Explain factors affecting rate of evaporation. Plz ,, complete explanation

Answer»

Temperature
Humidity in atmosphere
Wind
SURFACE area of the object to be a VAPORIZED (in case of WATER more surface area DECREASES the rate of evaporation)

49.

What happens when we add nacl to ca(oh)2

Answer» NACL + CA(OH)2 =. NaOH + CAOH
50.

Does sulphurous acid mixed with water give sulphuric acid?

Answer»

No REACTION TAKE PLACE