52639 + Interview Questions in Secondary School in Chemistry

1.	Plizzz tell me tha vegetables and its acids name with lisplizz
Answer» HEYA!! ---------- ✔Tomato ---- OXALIC ACID ✔Orange ---- CITRIC Acid ✔Milk --------LACTIC Acid ✔Tamarind -- Tataric Acid ✔Lemon ----- Citric Acid . ----------------------------------------------------------------------------------------------------

Discussion

2.	What do you observe when chlorine water is exposed to sunlight
Answer» Chlorine water is a SOLUTION formed by dissolving chlorine in water. Chlorine water is yellow in color and it loses this color when exposed to sunlight. When chlorine water is exposed to sunlight, it produces an ODORLESS and COLORLESS gas called OXYGEN under STP conditions. please mark it as brainiest answer. I hope it will HELP you

Discussion

3.	What is sigma bonding?
Answer» .......................................

Discussion

4.	What is its IUPAC name C(CH3) 3 (CH3) explain in detail
Answer» ANSWER: Explanation: 2,2-dimethyl PROPANE is the answer

4.

What is its IUPAC name C(CH3) 3 (CH3) explain in detail

Answer»

ANSWER:

Explanation:

2,2-dimethyl PROPANE is the answer

Discussion

5.	What is actum in chemistry
Answer» THE BUILDING BLOCK OF ALL MATTER ARE ATOMS.

Discussion

6.	Instead of plasma which replacement solution can be used for treatment?
Answer» In order to replace plasma in the blood, the saline solution filled with dextrans, serum albumins can be used as replacement solutions. These substances don't have the ability to CARRY the oxygen. They can only replace the plasma and as well as treat the dehydration in the body. HOWEVER, in extreme cases to maintain euvolemia; a combination of saline, albumin and FRESH frozen plasma can be used to maintain the HEALTH conditions.

6.

Instead of plasma which replacement solution can be used for treatment?

Answer»

In order to replace plasma in the blood, the saline solution filled with dextrans, serum albumins can be used as replacement solutions.

These substances don't have the ability to CARRY the oxygen.

They can only replace the plasma and as well as treat the dehydration in the body.

HOWEVER, in extreme cases to maintain euvolemia; a combination of saline, albumin and FRESH frozen plasma can be used to maintain the HEALTH conditions.

Discussion

7.	Inert temperature from zero degree water to zero degree ice
Answer» The ANSWER is 60 DEGREE CELSIUS

Discussion

8.	What is the purpose of a salt bridge?What is it made of?
Answer» To WALK . MADE up of SALT

Discussion

9.	What is the defination of chamistry
Answer» The STUDY of CHEMICALS is CALLED CHEMISTRY

Discussion

10.	Name the dispersed phase and dispersal medium in fog, milk
Answer» FOG DISPERSED phase=solid/LIQUID. dispersed medium=gas. milk dispersed phase =liquid& dispersed medium= liquid

Discussion

11.	Why does the electronegavity increases while moving from left to right in the modern periodic table?
Answer» Because s CHARACTER INCREASES

Discussion

12.	What is the total number of ions present in urea?
Answer» It is your ANSWER of QUESTION

Discussion

13.	1 newtron is equal to 1 AMU what is the meaning of Amu
Answer» HI FRIEND.... the full form of AMU is Unified atomic mass UNIT. it is a standard unit of mass that QUANTIFIES mass on an atomic or molecular SCALE. I HOPE I HELPED YOU.... PLEASE MARK IT AS BRAINLIST IF IT'S HELPFUL....

Discussion

14.	Setting of cement is exothermic reaction or endothermic reaction?
Answer» It is an endothermic REACTION because heat is NEEDED to EVAPORATE the moisture. hope this helps........

Discussion

15.	Why are the electrical wires are coated with polyvinyl chloride of a Rubber like material
Answer» To AVOID SHORT CIRCUIT

Discussion

16.	How will you separate of mixture of common alat sulphar powder and sand?
Answer» I don't KNOW because I don't know

Discussion

17.	What is unsymmetrical alkyne? explain with examplealso explain symmetrical alkyne if there isand is this term used for alkane and alkene also same way
Answer» An UNSYMMETRICAL alkene is an alkene in whose molecule the pair of ligands on one doubly bonded carbon is different from that on the other. ... In 1, one doubly bonded carbon bears two methyl groups and the other a methyl group and a hydrogen ATOM. Thus, 1 is an unsymmetrical alkene. Unsymmetrical Alkene \| OChemPalalphabetic What is the SIMPLEST alkyne? What is the difference between symmetrical and unsymmetrical alkenes? What is non terminal alkyne? What does nanh2 do?.. Unsymmetrical alphabetical › unsy... An unsymmetrical alkene is an alkene in whose molecule the pair of ligands on one doubly bonded carbon is different from that on the other. ... In 1, one doubly bonded carbon bears two methyl groups and the other a methyl group and a hydrogen atom. Thus, 1 is an unsymmetrical alkene. Unsymmetrical Alkyne \|› alphabetical › unsy... An unsymmetrical alkyne is an alkyne in whose molecule the triply bonded carbons bear different ligands. eg: In an organic molecule, a carbon-carbon triple bond of which the carbon atoms bear different ligands is called an unsymmetrical triple bond. Missing: explain ‎\| ‎Must include: ‎explain Alkyne Reactivity - MSU CHEMISTRY reusch The addition of hydrogen is stereoselectively syn (e.g. 2-butyne gives cis-2-butene). ... This behavior is nicely explained by differences in the stages of the hydrogenation reaction. What are non terminal Alkynes? - Quora› What-are-non-t... You see that the series of alkynes start from ethyne. ... A Terminal Alkyne is an alkyne in whose molecule t... ... Example: 2-butyne. Alkynes: Properties - Chemgape alkineeig.vlu.html If not symmetrical, the high s character of the hybrid orbitals is the reason asymmetric alkynes exhibit a dipole moment. What is de meaning of an unsymmetricalhydrocarbons Dec 20, 2011 - What is de meaning of an unsymmetrical alkane or alkyne. ... are symmetrical. For Example ,. CH3 -CH=CH2 ( propene). Missing: explain ‎\| ‎Must include: ‎explain Organic Chemistry/Introduction to reactions/Alkyne hydration... wiki › Alky... Alkynes readily combine with water in the presence of acid (usually sulfuric acid) and ... product is formed, but addition to unsymmetrical alkynes gives two possible cations, and two ... Organic Chemistry/Alkynes - Wikibooks, open BOOKS for an open word wiki › Alky... Alkynes are hydrocarbons containing carbon- carbon triple bond. .... For example, determine the molecular formula and speculate on what kind of Pi bonding and/or ring structure the ... Symmetrical Alkene - Chemistry LibreTex Reference..· A symmetrical alkene is an alkene in whose molecule the ... Thus, 1 is a symmetrical alkene. eg. 2: In 2, each doubly ... 9.4 Hydration of Alkynes - Chemistry ...9.04_Hydra · write the equation for the reaction of water with an alkyne in ... Other examples include imine-enamine tautomerism ... Tautomers are defined as rapidly interconverted ......

Discussion

18.	How does impurities affect the boiling point of liquid
Answer» Hey there is your ANSWER: Impurities contain other dissolving MOLECULES such as salt ,SUGAR. Therefore impurities increases the BOILING point of water. pls MARK as brainliest

Discussion

19.	What happens when common salt,sugar,cooking oil and kerosene oil are added to water?
Answer» When we added SALT and SUGAR in water they are MIXED without leaving any PARTICLES and make solutions when we added cooking oil and kerosene oil in water they are floting in water

Discussion

20.	Plz tell me about critical temperature....
Answer» The LOWEST TEMPERATURE is 0 KELVIN

Discussion

21.	Why does our palm feel cold when we put some acetone orpetrol or perfume on it??
Answer» Our palm FEEL COLD when we PUT some ACETONE or petrol perfume on it because it takes latent HEAT

Discussion

22.	What is the defination of volatile substances
Answer» LIQUID in liquid is the EXAMPLE of VOLATILE SUBSTANCE

Discussion

23.	plz help urgent hai balancing. H2 SO4+B (OH)3 GIVES B2 (SO4)3+H2O
Answer» I hope this ANSWER is RIGHT...! Pls. Mark it as BRAINLIST answer

Discussion

24.	Calculate the molecular mass of hydrogen
Answer» 1.00794 U ± 0.00001 u is the MOLECULAR MASS of HYDROGEN

Discussion

25.	a solution contains 40 grams of common salt in 320 grams of water calculate the concentration in terms of mass by mass percentage of the solution
Answer» $= \frac{40}{320 + 40} = \frac{40}{360} \\ \% = \frac{40}{360} \times 100 = \frac{4000}{360} \\ = 11.11\% \: \: or \frac{100}{9} \%$ ALRIGHT please MARK as BRAINIEST answer. I HOPE it will help you.

Discussion

26.	a solution contains 40gms of common salt in 320gms of water caculate the concentration in terms of mass by mass percentage of the solution
Answer» HENCE MASS PERCENTAGE will be 11.1%

Discussion

27.	What is the mass of precipitate formed when 50ml of 8.5% solution AgNO3 is mixed wth 100ml 1.865% NaCl solution
Answer» HENCE 7.3g AGCL PPT will FORM

Discussion

28.	Explain about Quantum numbers
Answer» Quantum NUMBERS are a set of values that describes the state of an electron including its DISTANCE from the nucleus, the orientation and TYPE of orbital where it is likely to be found, and its spin. The Pauli EXCLUSION principle states that no two electrons in an atom can have the same set of quantum numbers.

Discussion

29.	How much liters of water should be added to ph 1 of hcl?
Answer» Please ASK complete QUESTION dear how much liters of water should add to ph1 of HCL to MAKE what

Discussion

30.	How much iron can be obtained by the reduction of 1 kg of fe2o3?
Answer» the ANSWER for the GIVEN QUESTION is 700G or 0.7kg

30.

How much iron can be obtained by the reduction of 1 kg of fe2o3?

Answer»

the ANSWER for the GIVEN QUESTION is

700G or 0.7kg

Discussion

31.	What makes a glass different from aSolid such as quartz?Under what conditions could quartz bo converted into glass?
Answer» GLASS is a PSEUDO SOLID but QUARTZ is a TRUE solid

Discussion

32.	Name the dispersed phase and dispersal medium in fog, milk.plz give me the answer.
Answer» Fog - DISPERSED phase is Liquid DISPERSION medium is Gas Milk- Dispersed phase is Liquid Dispersion medium ALSO Liquid

Discussion

33.	Explain the Planck's Quantum theory
Answer» MAX planck in 1900 PROPOSED the theory of radiant energy. Following are its assumption 1. Absorption nd emissions of radiant energy by object is dis continuous. 2. Energy is absorbed or emitted by an object in the form of DISCRETE bundles of energy. 3. Each packet of energy is called quanta. Qunta of light energy called PHOTON. 4. Energy of one quanta equal to E/ quanta= hv = hc/ lambda Where h is planck CONSTANT. V is frequency of radiation. C is speed of light. Lambda is wavelength of radiation I hope it helps you

Discussion

34.	Answer this question plz. Ice packed in sawdust does not melt quickly. Why?
Answer» Icepacked in sawdust doesn't melt quickly because the sawdust act as a cushion.it doesn't allow the AIR to hit the ICE and ALSO doesn't let the warmth of ice GET out

Discussion

35.	"changes involve energy",Explain it
Answer» A change can be defined as an alteration in the physical and CHEMICAL properties of matter due to the effect of some KIND of ENERGY. E.g. cooking, digestion of food.

Discussion

36.	What is chemical decombination
Answer» Chemical DECOMPOSITION ANALYSIS or breakdown is the separation of a single chemical compound into its two or more elemental part or to simpler compounds. Chemical Decomposition is USUALLY regarded and DEFINE as the exact opposite of chemical synthesis ....... Hope it will help u ... Thank You so much

Discussion

37.	Please answer these questions urgently1. why a mixture is an impure substance 2. define aerosol3. what is concentration of a solution 4. define emulsion with example
Answer» 1. mixture is the COMPOSED of several types of chemical SUBSTANCES...this it is a IMPURE SUBSTANCE

Discussion

38.	What is mean by atom difine
Answer» An ATOM is the smallest constituent UNIT of ordinary matter that has the properties of a chemical element. Every SOLID, liquid, gas, and plasma is composed of NEUTRAL or ionized ATOMS....

Discussion

39.	How many radioactive elements are there in the periodic table?
Answer» There are about 15 of them... HOPE this HELPS....

Discussion

40.	How many oxygen atoms will be present in 88 gram of seo2?
Answer» Molar mass of CO2 = 44g/mol Number of moles of CO2 present in 88g of CO2 = 88g/44g mol-1 = 2 moles 1 mole of CO2 contains 2 moles of Oxygen ATOMS. Hence 2 moles of CO2 contains 4 moles of Oxygen atoms 1 mole of oxygen contains 6.023 X 1023 atoms of oxygen 4 moles of oxygen contains = 4 X 6.023 X 1023 = 24.092 X 1023 = 2.4092 X 1024 atoms of oxygen Therefore 88g of CO2 Contains 2.4092 X 1024 atoms of oxygen

Discussion

41.	How many minimum number of c atoms are required for position and geometrical isomerism in alkene?
Answer» 2 CARBON ATOMS............ ...

Discussion

42.	How many minimum no of carbon atoms required for positional and geometrical isomerism?
Answer» The minimum NUMBER of CARBON is 2 to show the cis and trans isomers as shown by cis-dichloroethylene and trans-dichloroethylene. But if compound contain only carbon and hydrogen in molecule then it require minimum 4 Carbon to show cis and trans isomers as . Hope it's help you Please mark me in BRAIN list answer

Discussion

43.	If 50℅ of the reaction of x was completedwhen 96℅ of the reaction y was complete
Answer» 50℅ of the REACTION of X was completedwhen 96℅ of the reaction y was COMPLETE

Discussion

44.	30g of common salt are paesent in 800ml of its solution in water.What is the mass by volume percentage of the solution?
Answer» HENCE MASS by VOLUME % will be 3.7%

Discussion

45.	Classify the following into element, compound and mixture:-1) sodium 2)soil 3) sugar solution 4)soap 5) blood 6) silver 7) calcium carbonate 8) Tim 9) silicone 10) methane 11)air.Plz give me the answer.
Answer» 1.e2.m 3.C 4.m 5.m 6.e 7.c 8.m 9.m 10. c 11. m e-element m-mixture c- compound.. HOPE it HELPS mark as BRAINLIEST!

Discussion

46.	the medicines she prescribes to treat acidity .how acidity is caused and can it be naturally prevented
Answer» Acidity is caused DUE to more secretion ODDS hcl in STOMACH it can be naturally prevented by drinking WATER

Discussion

47.	How to remember p block reactions
Answer» Here is your answer: you can REMEMBER easily if you FOLLOW this------- choose your favaourite song or codes and KEEP p block elements.... so by this you can easily REMEMBERS ANYTHING without byhouting.. Hope it helps...

Discussion

48.	The medicines she prescribes to treat acidity
Answer» We can USE BASES LIKE ENO

Discussion

49.	Why atmospheric pressure changes with the change of altitude?
Answer» Because it DEPENDS on GRAVITATIONAL FORCE .

Discussion

50.	When 0.6 g of an organic acid dissolved in 200ml of water is extracted with 50 ml of ether, it is found on analysis, that 0.4 g of the organic acid goes into the ether layer. Which of the following represents the correct ratio of the solubility of the acid in ether and water
Answer» Explanation: Given When 0.6 g of an organic acid dissolved in 200 ml of water is extracted with 50 ml of ETHER, it is FOUND on ANALYSIS, that 0.4 g of the organic acid goes into the ether layer. Which of the following represents the correct ratio of the SOLUBILITY of the acid in ether and water. We need to find the ratio of the solubility of the acid in ether and water. Now 0.6 g of organic acid is dissolved in 200 ml of water and is extracted with 50 ml of ether, and so 0.4 g of organic acid goes into ether layer. So we have solubility in water will be 0.6 – 0.4 = 0.2 So we get 0.2 g / 200 ml Solubility in ether will be 0.4 g / 50 ml = 0.4 x 4 / 50 x 4 = 1.6 / 200 (since we get equal denominator) So we have 0.2 / 200 and 1.6 / 200 Therefore the ratio of solubility of the acid in ether and water will be Solubility in ether / Solubility in water = 1.6 / 0.2 = 16 / 2 = 8 Reference link will be brainly.in/question/40239485

50.

When 0.6 g of an organic acid dissolved in 200ml of water is extracted with 50 ml of ether, it is found on analysis, that 0.4 g of the organic acid goes into the ether layer. Which of the following represents the correct ratio of the solubility of the acid in ether and water

Answer»

Explanation:

Given When 0.6 g of an organic acid dissolved in 200 ml of water is extracted with 50 ml of ETHER, it is FOUND on ANALYSIS, that 0.4 g of the organic acid goes into the ether layer. Which of the following represents the correct ratio of the SOLUBILITY of the acid in ether and water.

We need to find the ratio of the solubility of the acid in ether and water. Now 0.6 g of organic acid is dissolved in 200 ml of water and is extracted with 50 ml of ether, and so 0.4 g of organic acid goes into ether layer.
So we have solubility in water will be 0.6 – 0.4 = 0.2
So we get 0.2 g / 200 ml
Solubility in ether will be 0.4 g / 50 ml
= 0.4 x 4 / 50 x 4
= 1.6 / 200 (since we get equal denominator)
So we have 0.2 / 200 and 1.6 / 200
Therefore the ratio of solubility of the acid in ether and water will be
Solubility in ether / Solubility in water
= 1.6 / 0.2
= 16 / 2
= 8

Reference link will be

brainly.in/question/40239485

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Plizzz tell me tha vegetables and its acids name with lisplizz

What do you observe when chlorine water is exposed to sunlight

What is sigma bonding?

What is its IUPAC name C(CH3) 3 (CH3) explain in detail

What is actum in chemistry

Instead of plasma which replacement solution can be used for treatment?

Inert temperature from zero degree water to zero degree ice

What is the purpose of a salt bridge?What is it made of?

What is the defination of chamistry

Name the dispersed phase and dispersal medium in fog, milk

Why does the electronegavity increases while moving from left to right in the modern periodic table?

What is the total number of ions present in urea?

1 newtron is equal to 1 AMU what is the meaning of Amu

Setting of cement is exothermic reaction or endothermic reaction?

Why are the electrical wires are coated with polyvinyl chloride of a Rubber like material

How will you separate of mixture of common alat sulphar powder and sand?

What is unsymmetrical alkyne? explain with examplealso explain symmetrical alkyne if there isand is this term used for alkane and alkene also same way

How does impurities affect the boiling point of liquid

What happens when common salt,sugar,cooking oil and kerosene oil are added to water?

Plz tell me about critical temperature....

Why does our palm feel cold when we put some acetone orpetrol or perfume on it??

What is the defination of volatile substances

plz help urgent hai balancing. H2 SO4+B (OH)3 GIVES B2 (SO4)3+H2O

Calculate the molecular mass of hydrogen

a solution contains 40 grams of common salt in 320 grams of water calculate the concentration in terms of mass by mass percentage of the solution

a solution contains 40gms of common salt in 320gms of water caculate the concentration in terms of mass by mass percentage of the solution

What is the mass of precipitate formed when 50ml of 8.5% solution AgNO3 is mixed wth 100ml 1.865% NaCl solution

Explain about Quantum numbers

How much liters of water should be added to ph 1 of hcl?

How much iron can be obtained by the reduction of 1 kg of fe2o3?

What makes a glass different from aSolid such as quartz?Under what conditions could quartz bo converted into glass?

Name the dispersed phase and dispersal medium in fog, milk.plz give me the answer.

Explain the Planck's Quantum theory

Answer this question plz. Ice packed in sawdust does not melt quickly. Why?

"changes involve energy",Explain it

What is chemical decombination

Please answer these questions urgently1. why a mixture is an impure substance 2. define aerosol3. what is concentration of a solution 4. define emulsion with example

What is mean by atom difine

How many radioactive elements are there in the periodic table?

How many oxygen atoms will be present in 88 gram of seo2?

How many minimum number of c atoms are required for position and geometrical isomerism in alkene?

How many minimum no of carbon atoms required for positional and geometrical isomerism?

If 50℅ of the reaction of x was completedwhen 96℅ of the reaction y was complete

30g of common salt are paesent in 800ml of its solution in water.What is the mass by volume percentage of the solution?

Classify the following into element, compound and mixture:-1) sodium 2)soil 3) sugar solution 4)soap 5) blood 6) silver 7) calcium carbonate 8) Tim 9) silicone 10) methane 11)air.Plz give me the answer.

the medicines she prescribes to treat acidity .how acidity is caused and can it be naturally prevented

How to remember p block reactions

The medicines she prescribes to treat acidity

Why atmospheric pressure changes with the change of altitude?

When 0.6 g of an organic acid dissolved in 200ml of water is extracted with 50 ml of ether, it is found on analysis, that 0.4 g of the organic acid goes into the ether layer. Which of the following represents the correct ratio of the solubility of the acid in ether and water