52639 + Interview Questions in Secondary School in Chemistry

1.	How many atoms are present in 1gm of an atom
Answer» the QUESTION you have ASKED is TOTALLY WRONG BRO.

Discussion

2.	• A flask containing 2g of an ideal gas as X as pressure of 3 bar at 25°c & 3g of another ideal gasintroduced in the same flask at same temperatureand the pressure observed was 4.5 bar.calculate the relationship with their molecular weight
Answer» Both have same moleculer massExplanation:Its simple.... Just pv = NRT V and t GETS CANCELED

Discussion

3.	20.0 kg of N, (g) and 3.0 kg of H,(g) are mixed to produce NH, (g). The amount of NH2(g)formed is:1) 17 kg2) 34 kg3) 20 kg4) 3 kg
Answer» 17kghere H is LIMITING AGENT

Discussion

4.	4. 12 g of Mg with excess of HCl at NTP gives:1) 11.2 dm' of H, 2) 22.4 dmº of H,3) 5.6 dm' of H, 4) 15.6 dm3 of H,
Answer» 124g MG = 22.4 L12 g mg =?so 12 g mg = 11.2 L = 11.2 dm3

Discussion

5.	During R & S configuration 2nd priority for
Answer» I THINK OPTION 4 is CORRECT

Discussion

6.	Compound having ........ configuration1) S3) S or R2) RT4) Can't say
Answer» COMPOUND having s CONFIGURATION GIVE me BRAINLEST MARK

Discussion

7.	¿La fluorescencia cumple con las leyes de la termodinámica? ¿Cómo se cumple la segunda ley?
Answer» EXPLANATION:Gaanja KM fooka KARO..

Discussion

8.	How do you separate a mixture of barium tetraoxosulphate VI, sodium chloride and iron filings?
Answer» The principle behind this technique is that some solid SUBSTANCES are soluble in certain kind of solvent, while others are not. Hence, it is used generally to separate soluble substances from INSOLUBLE ones. For example, a mixture of sodium chloride crystals and SAND – the sodium chloride is soluble in water while sand is not. Therefore, water is added to the mixture to dissolve sodium chloride while leaving the sand to settle.Explanation:Water soluble salts INCLUDES: All common trioxonitrates(V) of metals. All common salts of sodium, potassium and ammonium. All common tetraoxosulphates(VI), EXCEPT: barium tetraoxosulphate(VI)

Discussion

9.	What is the equivalent weight of metal hydride if equivalent weight of metal is 10?(1) 10(2) 20(3) 17(4) 11
Answer» r Unit equivalent mass is same as that of mass . It can also be written as gram PER equvalent ' g / eq . Equivalent mass of metal = 12 g Equivalent mass of OXYGEN = 16 / 2 = 8g Equivalent mass of oxide = 12 + 8 = 20 g So equivalent mass of the oxide is 20 g HOPE it's helped you.... Plz MARKS as Brainleist ANSWER

Discussion

10.	Steric numbet of beF2
Answer» tion:Steric Number:- The steric number is USED to EXPRESS how many regions of electron density surround a given atom. In other words, the steric number represents the number of lone PAIRS PRESENT on, and the number of atoms bonded to the CENTRAL atom of a molecule.The molecular geometry of BeF2 is linear with symmetric charge distribution on the central atom. BeF2 is nonpolar.==========@GauravSaxena01

Discussion

11.	5 examples of double decomposition reaction.
Answer» 3 + NaCl → AgCl + NaNO32) BaCl2 + Na2SO4→BaSO4+2NaCl3) Pb(NO3)2 + 2 KI → 2 KNO3+ PbI24) NAHCO3 + CH3COOH → H2CO3 + NaCH3COO5) NaOH + HCl→ NaCl + H2O

Discussion

12.	What is double decomposition reaction?
Answer» the REACTION in which the reactant COMPOUND EXCHANGE Thier both ATOM to each other ....

Discussion

13.	Fill in the blank.no spams fast
Answer» 1)PHYSICAL 2)CHEMICALLY

Discussion

14.	The New substance formed by mixing metal and non metals..................
Answer» METALS often react with nonmetals to form IONIC compounds. These compounds are COMPOSED of POSITIVE and negative ions formed by adding or subtracting electrons from neutral ATOMS and molecules.

Discussion

15.	an atom X has mass that is four times that of carbon atom what mass of X will combine with 1 gram of carbon in
Answer» jiu-jitsu, so $5'[EMAIL protected]$!8$3'8$6=8$.(6'.$3!96$6'.$6'9$6'8$5'0$'8$6'[email protected],[email protected]=4/[email protected][email protected]EXPLANATION:hvueuehueueeuvxueuehuehzuezh hexdubdibdixidbxiurireizibwizbioqnooieoeojsbejxbieoejrirbor bxjfbhekzvsuak-Jwohzhsobsbjsnxvdjdvh(ixvecudicgdiwhsvjzknjeh/5/,562$=,hwubdldjgusgwcsisvsyeivsbjsgsf svwuxgquwgeeg [email protected]

Discussion

16.	Mmabsdfgsvafsvddgzcsfdvsvs
Answer» you are DONATING your POINTS! NICE!

Discussion

17.	54. Fire in the dicscl engine is produces by which of the following?a) Compression b) Spark plugc) Frictiond) Self starteredge
Answer» (b) SPARK plugExplanation:fire CAUSE in DIESEL engine MOSTLY by spark plug

Discussion

18.	Ans this fast it's urgent.no spams and ans in detail
Answer» The two are not of the same concentration. As RAMESH DISSOLVE 10g glucose in 100g of SOLVENT (water) While Sarika DISSOLVES 10g glucose in 100g of solution.In actual, Sarika makes a solution of 10℅mass by mass where as Ramesh makes the WRONG solution because it take mass of solvent 100g but actually 100g is mass of both solvent and solute.Therefore, both show different concentration.hope it helps you!!

Discussion

19.	Does sodium conduct electricity
Answer» It can do so in its MOLTEN or AQUEOUS STATE

Discussion

20.	Does Na conduct electricity .
Answer» CONDUCTS ELECTRICITY

Discussion

21.	Convert the following degree calsius tempreture to degree fahrenheit A.40°c b.30°c
Answer» 1) 104 F2)86 fExplanation:(30°C × 9/5) + 32 = 86°F(40°C × 9/5) + 32 = 104°F

Discussion

22.	explain why covalent compunds. 1..have low melting points. 2.... ionic compounds have high melting points.
Answer» Because ionic COMPOUNDS are joined with the STRONG ELECTROSTATIC FORCES of attraction on the other hand in COVALENT compounds the weak wanderwall force is present.

Discussion

23.	Potash alun and chrome are example of
Answer» CORRECT ANSWER IS ISOMORPHISMExplanation:ISOMORPHISM

Discussion

24.	Sin75 cosec 75 sin55 × cosec55 = 1/2
Answer» By EVALUATE the TERMS you will ABLE to FIND itExplanation:

Discussion

25.	What is ment by the term crystal
Answer» tion:Crystal is a solid MATERIAL WHOSE constituents (such as ATOMS, molecules, or ions) are arranged in a highly ORDERED microscopic structure.Hope it HELPS you

Discussion

26.	Draw theLonepaireStructureICl2-
Answer» ucture of ICl2- is linear.The NUMBER of bond pairs 2and the number of LONE pairs 3. Hence it's geometry is TBP(trigonal bi pyramid). It's hybridisation is SP3D2. The central atom I has 7 ES in its valence orbital. I make 2 bond with Cl ATOMS. and the rest 6 es form 3 lone pairs.

Discussion

27.	Ен - Сн - сн - Снс нас. Ня
Answer» What LANGUAGE is this? Cannot UNDERSTANDABLE..

Discussion

28.	50 mL of a water sample consumed 15 mL of 0.01M EDTA before boiling and 5 mL of the same after boiling. 50 mL of the standard hard water (1000 mg/L) consumed 20 mL of EDTA. Calculate the degree of permanent, temporary and total hardness in terms of CaCO3 equiv.
Answer» 50ML of water sample=15ml of 0.01M EDTA= ml of 0.01 EDTA=300ml of 0.01M EDTA=2300ml of 0.01 N EDTA=600 ml or 0.6 L of 0.01 eq. of CACO3=0.60.0150g CaCO3 eq.Then the total hardness=0.30g or 300mg of CaCO3 eq=300mg/L or ppmnow 50 ml of boiled water=5 ml of 0.01 M EDTA1000ml of boiled water= ml of 0.01 M EDTA=100 mL of 0.01 M EDTA=200ml or 0.2 L of 0.01 N EDTA=0.20.01*50 G of CaCO3 eq=0.1 g or 100MG of CaCO3 eqpermanent hardness=100mg/L or ppmTemporary hardness=300-100= 200ppm

Discussion

29.	How can we separate the components from a mixture of camphor and sand
Answer» By the PROCESS of SUBLIMATION.

Discussion

30.	How would you separate carbon particles from smoke CBSE class 9th
Answer» ric filters to HELP remove dust. Use filters that are durable and can WITHSTAND excessive heat temperatures INSIDE a SMOKESTACK. Install venturi scrubbers to help remove particles that are confined within a smokestack. A SCRUBBING liquid is used in conjunction with air pressure to help remove particles.

Discussion

31.	The molarity of 2 N H2SO4 solution is(1) 1 M(2) 2M(3) 0.5 M(4) 1.5 M
Answer» tion:Normality (N) = MOLARITY (M) X Basicity2 N = Molarity (M) x 2Molarity (M) = 2÷ 2Molarity (M) = 1 Mhope this HELPS!

Discussion

32.	calculate the numbet of atom in each of the following (Given :Atomic mass of J =127u) A. 254 u of iodine b. 254 g of iodine
Answer» maybe you can do so by your SELF. Explanation:mass of iodine must being fivided by MOLAR mass of atom and MULTIPLE by AVAGADRO no to find the SOLUTION.

Discussion

33.	If the initial concentration of reactants are doubled half life becomes half. Then order of the reaction will be ?
Answer» this REACTION is 2ND ORDER reaction

Discussion

34.	9. A 100 proof solution of ethanol in water consists of 50.0 mL of C,HOH (I) and 50.0 mL of H20 (1), mixed at 16°C.Given Density of H2O = 1g mL-'Density of C,H,OH = 0.7939 g mL-1Density mixture = 0.9344 g mL-'Volume of the solution is(a) 100 mL(b) 105 mL(c) 96 mL(d) 98 mL
Answer» ANSWER is OPTION C . 96 ML

Discussion

35.	IJA (3) > na(2) - 11 -(4) < na94.A particle X moving with a certain velocity has adebroglie wavelength of 18. If particle Y has amass of 25% that of X and velocity 75% that ofX, de-Broglie wavelength of Y will be :-(1) 38(2) 5.33 Å(3) 6.88 Å(4).48 Å
Answer» 2)Explanation:5.33

Discussion

36.	Chemistry ch 1 extra questions of class 11
Answer» SEARCH on GOOGLE BRO......

Discussion

37.	Which is called as the finger print of an atom?
Answer» line SPECTRA or FINGERPRINT spectrum HOPE IT HELPS YOU AND PLS MARK AS BRAINLIEST

Discussion

38.	Wite different steps of method of balancing ation by ion electron method. Balance thefollowing equations.Al+NO; + Al(OH)2 + NH3(Alkaline)
Answer» AL

Discussion

39.	Give one example of heterogeneous mixture
Answer» Examples include ice CUBES in a DRINK, sand and water, and SALT and oil.

Discussion

40.	Electronegativity of Nh3+
Answer» s NH3 then the ANSWER is 0.9...ELECTRONEGATIVITY of N=3.0electronegativity of H=2.1

Discussion

41.	What was basis of classification of element before knowledge of the electronic structure of atom
Answer» ATOMIC MASS I THINK......

Discussion

42.	Define the solubility?
Answer» TION:Solubility is the ABILITY of a substance (the SOLUTE), to mix into a liquid (the SOLVENT). It measures the highest amount of substance mixed into a liquid solvent while they are both at equal AMOUNTS

Discussion

43.	What is the saturated and unsaturated solution.
Answer» SATURATED MEANS SINGLE bond and unsaturated means double bond

Discussion

44.	white insoluble precipitate of BaSO4 is obtained on adding 120cm3 of 0.40M Na2SO4 in aqueous solution of 26gram of barium chloride find the amount of BaSO4 in mole and gram
Answer» EXPLANATION: I don't KNOW this QUESTION

Discussion

45.	Which one of the following is not a strong bond? A) vander waals bond.B)metallic bond.C)covalent bond.D)Ionic bond
Answer» metallic Radius EXPLANATION:VANDER WAAL radius>ionic radius >COVALENT radius>metallic radius

Discussion

46.	Why does transition elements form coloured complexes
Answer» transition ELEMENTS FORM coloured COMPLEXES DUE to the d d transition of their electrons

Discussion

47.	what is the physical state of water at (a) 25 degree Celsius (b) 100 degree celsius (c) 0 degree Celsius?
Answer» Physical state of watersa)at 25 °C water remain liquid.b)At 100°C water start boiling I.e. water comes in vapour statec)at 0°C water FREEZE means water comes in SOLID state.hope you LIKE it!!!!

Discussion

48.	In Avogadro's constant 6.022 x 10^23 mol", the number of significant figuresis .........a. 3c. 5b.4d. 6
Answer» UR ans is 3) 4 HOPE it help U

Discussion

49.	The weight of two elements which combine with one are in the ratio of their
Answer» ............ ........................

Discussion

50.	Explain the 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. ... As with Rayleigh scattering, BLUE light is scattered more strongly than RED light by the Tyndall effect.

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

How many atoms are present in 1gm of an atom ​

• A flask containing 2g of an ideal gas as *X* as pressure of 3 bar at 25°c & 3g of another ideal gasintroduced in the same flask at same temperatureand the pressure observed was 4.5 bar.calculate the relationship with their molecular weight ​

20.0 kg of N, (g) and 3.0 kg of H,(g) are mixed to produce NH, (g). The amount of NH2(g)formed is:1) 17 kg2) 34 kg3) 20 kg4) 3 kg​

4. 12 g of Mg with excess of HCl at NTP gives:1) 11.2 dm' of H, 2) 22.4 dmº of H,3) 5.6 dm' of H, 4) 15.6 dm3 of H,​

During R & S configuration 2nd priority for​

Compound having ........ configuration1) S3) S or R2) RT4) Can't say​

¿La fluorescencia cumple con las leyes de la termodinámica? ¿Cómo se cumple la segunda ley?

How do you separate a mixture of barium tetraoxosulphate VI, sodium chloride and iron filings?

What is the equivalent weight of metal hydride if equivalent weight of metal is 10?(1) 10(2) 20(3) 17(4) 11​

Steric numbet of beF2

5 examples of double decomposition reaction. ​

What is double decomposition reaction?​

Fill in the blank.no spams fast​

The New substance formed by mixing metal and non metals..................

an atom X has mass that is four times that of carbon atom what mass of X will combine with 1 gram of carbon in​

Mmabsdfgsvafsvddgzcsfdvsvs​

54. Fire in the dicscl engine is produces by which of the following?a) Compression b) Spark plugc) Frictiond) Self starteredge​

Ans this fast it's urgent.no spams and ans in detail​

Does sodium conduct electricity​

Does Na conduct electricity .​

Convert the following degree calsius tempreture to degree fahrenheit A.40°c b.30°c​

explain why covalent compunds. 1..have low melting points. 2.... ionic compounds have high melting points.​

Potash alun and chrome are example of​

Sin75 cosec 75 sin55 × cosec55 = 1/2​

What is ment by the term crystal​

Draw theLonepaireStructureICl2-​

Ен - Сн - сн - Снс нас. Ня​

50 mL of a water sample consumed 15 mL of 0.01M EDTA before boiling and 5 mL of the same after boiling. 50 mL of the standard hard water (1000 mg/L) consumed 20 mL of EDTA. Calculate the degree of permanent, temporary and total hardness in terms of CaCO3 equiv.​

How can we separate the components from a mixture of camphor and sand​

How would you separate carbon particles from smoke CBSE class 9th​

The molarity of 2 N H2SO4 solution is(1) 1 M(2) 2M(3) 0.5 M(4) 1.5 M​

calculate the numbet of atom in each of the following (Given :Atomic mass of J =127u) A. 254 u of iodine b. 254 g of iodine ​

If the initial concentration of reactants are doubled half life becomes half. Then order of the reaction will be ?​

9. A 100 proof solution of ethanol in water consists of 50.0 mL of C,HOH (I) and 50.0 mL of H20 (1), mixed at 16°C.Given Density of H2O = 1g mL-'Density of C,H,OH = 0.7939 g mL-1Density mixture = 0.9344 g mL-'Volume of the solution is(a) 100 mL(b) 105 mL(c) 96 mL(d) 98 mL​

IJA (3) > na(2) - 11 -(4) < na94.A particle X moving with a certain velocity has adebroglie wavelength of 18. If particle Y has amass of 25% that of X and velocity 75% that ofX, de-Broglie wavelength of Y will be :-(1) 38(2) 5.33 Å(3) 6.88 Å(4).48 Å​

Chemistry ch 1 extra questions of class 11​

Which is called as the finger print of an atom?

Wite different steps of method of balancing ation by ion electron method. Balance thefollowing equations.Al+NO; + Al(OH)2 + NH3(Alkaline)​

Give one example of heterogeneous mixture​

Electronegativity of Nh3+​

What was basis of classification of element before knowledge of the electronic structure of atom​

Define the solubility? ​

What is the saturated and unsaturated solution.​

white insoluble precipitate of BaSO4 is obtained on adding 120cm3 of 0.40M Na2SO4 in aqueous solution of 26gram of barium chloride find the amount of BaSO4 in mole and gram​

Which one of the following is not a strong bond? A) vander waals bond.B)metallic bond.C)covalent bond.D)Ionic bond

Why does transition elements form coloured complexes

what is the physical state of water at (a) 25 degree Celsius (b) 100 degree celsius (c) 0 degree Celsius?​

In Avogadro's constant 6.022 x 10^23 mol", the number of significant figuresis .........a. 3c. 5b.4d. 6​

The weight of two elements which combine with one are in the ratio of their

Explain the tyndall effect ?​

How many atoms are present in 1gm of an atom

• A flask containing 2g of an ideal gas as X as pressure of 3 bar at 25°c & 3g of another ideal gasintroduced in the same flask at same temperatureand the pressure observed was 4.5 bar.calculate the relationship with their molecular weight

20.0 kg of N, (g) and 3.0 kg of H,(g) are mixed to produce NH, (g). The amount of NH2(g)formed is:1) 17 kg2) 34 kg3) 20 kg4) 3 kg

4. 12 g of Mg with excess of HCl at NTP gives:1) 11.2 dm' of H, 2) 22.4 dmº of H,3) 5.6 dm' of H, 4) 15.6 dm3 of H,

During R & S configuration 2nd priority for

Compound having ........ configuration1) S3) S or R2) RT4) Can't say

What is the equivalent weight of metal hydride if equivalent weight of metal is 10?(1) 10(2) 20(3) 17(4) 11

5 examples of double decomposition reaction.

What is double decomposition reaction?

Fill in the blank.no spams fast

an atom X has mass that is four times that of carbon atom what mass of X will combine with 1 gram of carbon in

Mmabsdfgsvafsvddgzcsfdvsvs

54. Fire in the dicscl engine is produces by which of the following?a) Compression b) Spark plugc) Frictiond) Self starteredge

Ans this fast it's urgent.no spams and ans in detail

Does sodium conduct electricity

Does Na conduct electricity .

Convert the following degree calsius tempreture to degree fahrenheit A.40°c b.30°c

explain why covalent compunds. 1..have low melting points. 2.... ionic compounds have high melting points.

Potash alun and chrome are example of

Sin75 cosec 75 sin55 × cosec55 = 1/2

What is ment by the term crystal

Draw theLonepaireStructureICl2-

Ен - Сн - сн - Снс нас. Ня

50 mL of a water sample consumed 15 mL of 0.01M EDTA before boiling and 5 mL of the same after boiling. 50 mL of the standard hard water (1000 mg/L) consumed 20 mL of EDTA. Calculate the degree of permanent, temporary and total hardness in terms of CaCO3 equiv.

How can we separate the components from a mixture of camphor and sand

How would you separate carbon particles from smoke CBSE class 9th

The molarity of 2 N H2SO4 solution is(1) 1 M(2) 2M(3) 0.5 M(4) 1.5 M

calculate the numbet of atom in each of the following (Given :Atomic mass of J =127u) A. 254 u of iodine b. 254 g of iodine

If the initial concentration of reactants are doubled half life becomes half. Then order of the reaction will be ?

9. A 100 proof solution of ethanol in water consists of 50.0 mL of C,HOH (I) and 50.0 mL of H20 (1), mixed at 16°C.Given Density of H2O = 1g mL-'Density of C,H,OH = 0.7939 g mL-1Density mixture = 0.9344 g mL-'Volume of the solution is(a) 100 mL(b) 105 mL(c) 96 mL(d) 98 mL

IJA (3) > na(2) - 11 -(4) < na94.A particle X moving with a certain velocity has adebroglie wavelength of 18. If particle Y has amass of 25% that of X and velocity 75% that ofX, de-Broglie wavelength of Y will be :-(1) 38(2) 5.33 Å(3) 6.88 Å(4).48 Å

Chemistry ch 1 extra questions of class 11

Wite different steps of method of balancing ation by ion electron method. Balance thefollowing equations.Al+NO; + Al(OH)2 + NH3(Alkaline)

Give one example of heterogeneous mixture

Electronegativity of Nh3+

What was basis of classification of element before knowledge of the electronic structure of atom

Define the solubility?

What is the saturated and unsaturated solution.

white insoluble precipitate of BaSO4 is obtained on adding 120cm3 of 0.40M Na2SO4 in aqueous solution of 26gram of barium chloride find the amount of BaSO4 in mole and gram

what is the physical state of water at (a) 25 degree Celsius (b) 100 degree celsius (c) 0 degree Celsius?

In Avogadro's constant 6.022 x 10^23 mol", the number of significant figuresis .........a. 3c. 5b.4d. 6

Explain the tyndall effect ?