52639 + Interview Questions in Secondary School in Chemistry

1.	Why nicl4 is paramagnetic while nico4 is diamagnetic through both are tetraheral
Answer» Answer: it's not about molecular structure its about ELECTRON distribution.... DRAW MO diagram and SEE

1.

Why nicl4 is paramagnetic while nico4 is diamagnetic through both are tetraheral

Answer»

Answer:

it's not about molecular structure

its about ELECTRON distribution....

DRAW MO diagram and SEE

Discussion

2.	Chloride bromine and iodine identify by silver nitrate
Answer» ANSWER: then what to do Explanation: which answer do U WANT

2.

Chloride bromine and iodine identify by silver nitrate

Answer»

ANSWER:

then what to do

Explanation:

which answer do U WANT

Discussion

3.	Calculate the work done during the reaction represented by the following thermochemical equation at 300K :CH4 + 2O2 ➡️ CO2 + 2H20(g). (g). (g). (L)(R= 8.314 J/Kmol)
Answer» Work Done COMES 4.988 kJ Explanation: Work is done during any chemical reaction that can be calculated with the HELP of a Chemical EQUATION. The Chemical Equation says - Work Done = $- \Delta n_g \times R \times T$ """(1) where, Where $\Delta$ is the change in the NUMBER of MOLES of gas. $\Delta n_g$ = -(-2) = 2 The Universal gas Constant, R = 8.314 $\frac {J}{Kmol}$ Temperature, T = 300 K Applying Equation (1) we get - W = $- \Delta n_g \times R \times T$ = $-(-2) \times 8.314 \times 300$ = 4988.4 J or 4.9884 kJ is the Work Done

3.

Calculate the work done during the reaction represented by the following thermochemical equation at 300K :CH4 + 2O2 ➡️ CO2 + 2H20(g). (g). (g). (L)(R= 8.314 J/Kmol)

Answer»

Work Done COMES 4.988 kJ

Explanation:

Work is done during any chemical reaction that can be calculated with the HELP of a Chemical EQUATION.

The Chemical Equation says -

Work Done = $- \Delta n_g \times R \times T$ """(1)

where,

Where $\Delta$ is the change in the NUMBER of MOLES of gas.

$\Delta n_g$ = -(-2) = 2

The Universal gas Constant, R = 8.314 $\frac {J}{Kmol}$

Temperature, T = 300 K

Applying Equation (1) we get -

W = $- \Delta n_g \times R \times T$

= $-(-2) \times 8.314 \times 300$

= 4988.4 J

or

4.9884 kJ is the Work Done

Discussion

4.	The dissociation of CO2 can be expressed as2Co 2Co +O2 . lf the 2 mol of CO2 is takeninitially and 40% of the CO2 is dissociatedcompletely. What is the total number of moles atequilibrium:-(1) 2.4 (2) 2.0 (3) 1.2 (4) 5
Answer» ANSWER: option 1 is correct Explanation: 2CO2 ------> 2CO + O2 Initial moles of CO2 are two Initial moles of CO and O2 are zero At EQUILIBRIUM degree of dissociation a = 40%=0.4 for the given reaction equilibrium moles of CO2 = 2—2A = 2—2(0.4)= 1.2 equilibrium moles of CO = 2a = 2(0.4)= 0.8 equilibrium moles of O2 = a = 0.4 therefore total moles at equilibrium are 1.6+0.8+0.4=2.8

4.

The dissociation of CO2 can be expressed as2Co 2Co +O2 . lf the 2 mol of CO2 is takeninitially and 40% of the CO2 is dissociatedcompletely. What is the total number of moles atequilibrium:-(1) 2.4 (2) 2.0 (3) 1.2 (4) 5

Answer»

ANSWER:

option 1 is correct

Explanation:

2CO2 ------> 2CO + O2

Initial moles of CO2 are two

Initial moles of CO and O2 are zero

At EQUILIBRIUM degree of dissociation a = 40%=0.4

for the given reaction

equilibrium moles of CO2 = 2—2A = 2—2(0.4)= 1.2

equilibrium moles of CO = 2a = 2(0.4)= 0.8

equilibrium moles of O2 = a = 0.4

therefore total moles at equilibrium are

1.6+0.8+0.4=2.8

Discussion

5.	Who is vishnushama shjandhjsbrhzjd
Answer» ANSWER: why you WANT him Explanation: WGO is he

5.

Who is vishnushama shjandhjsbrhzjd

Answer»

ANSWER:

why you WANT him

Explanation:

WGO is he

Discussion

6.	The number of moles of methyl iodide required to prepare tetra methyl ammonium iodide from 1 mole of methyl amine is/are :a. 1b. 2c. 3d. 4
Answer» ANSWER: the answer to this QUESTION is OPTION C THREE

6.

The number of moles of methyl iodide required to prepare tetra methyl ammonium iodide from 1 mole of methyl amine is/are :a. 1b. 2c. 3d. 4

Answer»

ANSWER:

the answer to this QUESTION is OPTION C THREE

Discussion

7.	Identify a gas among the following: ClF, BrF, IF, IF7
Answer» ANSWER: CIF Explanation: AS BITH OF THE CHLORINE AND FLORINE ARE GASES

7.

Identify a gas among the following: ClF, BrF, IF, IF7

Answer»

ANSWER:

CIF

Explanation:

AS BITH OF THE CHLORINE AND FLORINE ARE GASES

Discussion

8.	Find for the normality of 0.165 moles of Li2CO3 dissolved in O.324 dL of solution?
Answer» I *HOPE* *this* *ANSWER* *will* *HELP* *you. PLEASE* *MARK* me *Birlianist. BYE*.........

8.

Find for the normality of 0.165 moles of Li2CO3 dissolved in O.324 dL of solution?

Answer»

I HOPE this ANSWER will HELP you. PLEASE MARK me Birlianist.

BYE.........

Discussion

9.	3H2 +2N2=_______________
Answer» ANSWER: 3H2 +2N2 = 2N2H3 it is the answer

9.

3H2 +2N2=_______________

Answer»

ANSWER:

3H2 +2N2 = 2N2H3

it is the answer

Discussion

10.	What are the cofficients of the correctly balanced equation? ?fe2o3 +co - ?fe + ?co2
Answer» ANSWER: Fe2O3 + 3 CO -------> 2 FE + 3 CO2

10.

What are the cofficients of the correctly balanced equation? ?fe2o3 +co - ?fe + ?co2

Answer»

ANSWER:

Fe2O3 + 3 CO -------> 2 FE + 3 CO2

Discussion

11.	Calculate the molecular mass of CH³OH
Answer» Answer:32.04 g/mol Explanation:

11.

Calculate the molecular mass of CH³OH

Answer»

Answer:32.04 g/mol

Explanation:

Discussion

12.	Identify complex ion in which effective atomic number of the central metal ion is 35(Given At. number of Co = 27, Fe = 26, Zn = 30)a. [Zn(NH3)4]²+b. [Fe(CN)6]⁴-c. [Fe(CN)6]³‐d. [Co(NH3)6]³+
Answer» ANSWER: the CORRECT answer is (B)

12.

Identify complex ion in which effective atomic number of the central metal ion is 35(Given At. number of Co = 27, Fe = 26, Zn = 30)a. [Zn(NH3)4]²+b. [Fe(CN)6]⁴-c. [Fe(CN)6]³‐d. [Co(NH3)6]³+

Answer»

ANSWER:

the CORRECT answer is (B)

Discussion

13.	(x) Calculate the work done during the reaction represented bythe following thermochemical equation at 300 K:CH4 +202 → CO2 + 2H2O(g) (g) (g) (1)(R=8-314 JK-'mol-!)(a) +4.988 kJ(b). - 4.988 kJ(c) - 49.88 kJ(d) + 49.88 kJ
Answer» Given: Thermochemical equation CH4 (g) +202 (g) → CO2 (g) + 2H2O (l) To FIND: Work done during the rection. Solution: As we have given the thermochemical equation, so we can identify that the equation is already balanced. So no need to balance again. Now, we know the formula of Δn which is: Δn = no. of gaseous product - number of gaseous REACTANT = 1 - (1+2) = -2 Now putting all the values in the formula of work done, we get: W = ΔnRT = -2 ( 8.314) (300) = 4988.4 J W = 4.9884 KJ Answer: The work done during the REACTION is 4.9884 KJ

13.

(x) Calculate the work done during the reaction represented bythe following thermochemical equation at 300 K:CH4 +202 → CO2 + 2H2O(g) (g) (g) (1)(R=8-314 JK-'mol-!)(a) +4.988 kJ(b). - 4.988 kJ(c) - 49.88 kJ(d) + 49.88 kJ

Answer»

Given: Thermochemical equation CH4 (g) +202 (g) → CO2 (g) + 2H2O (l)

To FIND: Work done during the rection.

Solution:

As we have given the thermochemical equation, so we can identify that the equation is already balanced. So no need to balance again.
Now, we know the formula of Δn which is:

Δn = no. of gaseous product - number of gaseous REACTANT

= 1 - (1+2)

= -2

Now putting all the values in the formula of work done, we get:

W = ΔnRT

= -2 ( 8.314) (300)

= 4988.4 J

W = 4.9884 KJ

Answer:

The work done during the REACTION is 4.9884 KJ

Discussion

14.	5. Predict the atomic number and name of the element from the following quantum numbers.N=3, 1=2, m=0,s=-1/2
Answer» Answer: to fir PAHLI tin KAUN han

14.

5. Predict the atomic number and name of the element from the following quantum numbers.N=3, 1=2, m=0,s=-1/2

Answer»

Answer:

to fir PAHLI tin KAUN han

Discussion

15.	What change took place when naphthalene balls disappear after some time
Answer» Answer: Sublimation Explanation: When a solid substance directly changes to gas with changing into liquid the the process is called Sublimation. It is a CHEMICAL change. Because VAPOUR FORM of NAPHTHALENE ball cannot be OBTAINED back

15.

What change took place when naphthalene balls disappear after some time

Answer»

Answer: Sublimation

Explanation:

When a solid substance directly changes to gas with changing into liquid the the process is called Sublimation. It is a CHEMICAL change. Because VAPOUR FORM of NAPHTHALENE ball cannot be OBTAINED back

Discussion

16.	Defination of inter molecular force in liquid
Answer» Explanation: Intermolecular forces are electrostatic in nature and INCLUDE VAN DER WAALS forcesand HYDROGEN bonds. Molecules in liquidsare held to other molecules byintermolecular interactions, which are weaker than the intramolecularinteractions that hold the atoms together within molecules and polyatomic ions.

16.

Defination of inter molecular force in liquid

Answer»

Explanation:

Intermolecular forces are electrostatic in nature and INCLUDE VAN DER WAALS forcesand HYDROGEN bonds. Molecules in liquidsare held to other molecules byintermolecular interactions, which are weaker than the intramolecularinteractions that hold the atoms together within molecules and polyatomic ions.

Discussion

17.	(x) Calculate the work done during the reaction represented bythe following thermochemical equation at 300 K:CH4 +202 → CO2 + 2H20(g) (g) (g) (1)(R = 8.314 JK-'mol-')(a) +4.988 kJ(b) -4.988 kJ(c) -49.88 kJ(d)+49.88 kJ
Answer» ANSWER: a)+4.988 Explanation: TRY CONVERTING R into KJ

17.

(x) Calculate the work done during the reaction represented bythe following thermochemical equation at 300 K:CH4 +202 → CO2 + 2H20(g) (g) (g) (1)(R = 8.314 JK-'mol-')(a) +4.988 kJ(b) -4.988 kJ(c) -49.88 kJ(d)+49.88 kJ

Answer»

ANSWER: a)+4.988

Explanation:

TRY CONVERTING R into KJ

Discussion

18.	We watch movies as a result of ____________.
Answer» ANSWER: We WATCH MOVIES as a RESULT of BOREDOM

18.

We watch movies as a result of ____________.

Answer»

ANSWER:

We WATCH MOVIES as a RESULT of BOREDOM

Discussion

19.	(iii) During oxidation of ferrous sulphate using mixture of dil.H.SO, and potassium dichromate; oxidation state ofchromium changes from(a) +6 to + 2(b + 6 to + 3(c) + 6 to +1(d) + 6 to + 4
Answer» Answer: So in K2CR2O7 , the OXIDATION number of CR is +6.

19.

(iii) During oxidation of ferrous sulphate using mixture of dil.H.SO, and potassium dichromate; oxidation state ofchromium changes from(a) +6 to + 2(b + 6 to + 3(c) + 6 to +1(d) + 6 to + 4

Answer»

Answer:

So in K2CR2O7 , the OXIDATION number of CR is +6.

Discussion

20.	A cation x2± has 2 proton what is is atomic number
Answer» Answer: 2 Explanation: ATOMIC NUMBER is ALWAYS EQUAL to the no. of PROTONS

20.

A cation x2± has 2 proton what is is atomic number

Answer»

Answer:

2

Explanation:

ATOMIC NUMBER is ALWAYS EQUAL to the no. of PROTONS

Discussion

21.	(C) TUTIiv) Identify complex ion in which effective atomic number ofthe central metal ion is 35.(Given At. number of Co = 27, Fe = 26, Zn = 30).\| (a) [Zn(NH, P.(b) [Fe (CN) 14te) [Fe(CN), )(d) [Co (NH "Conversion of methyl chloride into methyl fluoride is knownasal pin
Answer» ANSWER: the CORRECT answer is (a)

21.

(C) TUTIiv) Identify complex ion in which effective atomic number ofthe central metal ion is 35.(Given At. number of Co = 27, Fe = 26, Zn = 30).| (a) [Zn(NH, P.(b) [Fe (CN) 14te) [Fe(CN), )(d) [Co (NH "Conversion of methyl chloride into methyl fluoride is knownasal pin

Answer»

ANSWER:

the CORRECT answer is (a)

Discussion

22.	A ______ person has difficulty in focusing on distant objects.( fill in the blanks ).
Answer» ANSWER: metropic ......................✌️✌️✌️✌️

22.

A ______ person has difficulty in focusing on distant objects.( fill in the blanks ).

Answer»

ANSWER:

metropic ......................✌️✌️✌️✌️

Discussion

23.	Solution is kept in a test tube the solution could be
Answer» The QUESTION is not COMPLETED..!

Discussion

24.	Factors which effects wind
Answer» Answer: some factors that affect it, such as air temperature and pressure, the Coriolis effect, and FRICTION. By the END of this LESSON, you will also understand how Earth's rotation plays a role in how winds TRAVEL.

24.

Factors which effects wind

Answer»

Answer:

some factors that affect it, such as air temperature and pressure, the Coriolis effect, and FRICTION. By the END of this LESSON, you will also understand how Earth's rotation plays a role in how winds TRAVEL.

Discussion

25.	0.218g of a metal is dissolved in dil.HCl thevolume of hydrogen liberated at N.T.P reacts with 75ml of oxygen at N.T.P calculate the equivalent weight of metal
Answer» ANSWER: Bsjkqjwy Explanation: 2i1jahsuduuei2kqjzgf82kas2

25.

0.218g of a metal is dissolved in dil.HCl thevolume of hydrogen liberated at N.T.P reacts with 75ml of oxygen at N.T.P calculate the equivalent weight of metal

Answer»

ANSWER:

Bsjkqjwy

Explanation:

2i1jahsuduuei2kqjzgf82kas2

Discussion

26.	CH3Br in presence of na ether gives A and A IN presence of br2 gives B
Answer» Answer: METHYL BROMIDE in presence of SODIUM and DRY ETHER gives ethane which on further reaction with bromine (in presence of sunlight) gives ethyl bromide

26.

CH3Br in presence of na ether gives A and A IN presence of br2 gives B

Answer»

Answer:

METHYL BROMIDE in presence of SODIUM and DRY ETHER gives ethane which on further reaction with bromine (in presence of sunlight) gives ethyl bromide

Discussion

27.	Show the formation of na2o and mgO by the transfer of elctron
Answer» ANSWER: i THINK it is helpfull to you and PLEASE MAKE it as brilliest answer

27.

Show the formation of na2o and mgO by the transfer of elctron

Answer»

ANSWER:

i THINK it is helpfull to you and PLEASE MAKE it as brilliest answer

Discussion

28.	A sample of pure KHC2O4·H2C2O4·2H2O (three replaceable hydrogens) requires 46.2mL of 0.100M NaOH for titration. How many milliliters of 0.100M KMnO4 will the same-size sample react with?
Answer» ANSWER: Fjwtstnbfabarnrntwmtqbafmwtbdaneyjwrhwymryjqrneymwthtwmethrwnwthwtqrbwtnwtnatj25 Explanation:

28.

A sample of pure KHC2O4·H2C2O4·2H2O (three replaceable hydrogens) requires 46.2mL of 0.100M NaOH for titration. How many milliliters of 0.100M KMnO4 will the same-size sample react with?

Answer»

ANSWER:

Fjwtstnbfabarnrntwmtqbafmwtbdaneyjwrhwymryjqrneymwthtwmethrwnwthwtqrbwtnwtnatj25

Explanation:

Discussion

29.	Dysentery is a ________ bone disease.(fill in the the blanks)
Answer» ANSWER: not Explanation: MARK as BRAINLIEST PLS TY

29.

Dysentery is a ________ bone disease.(fill in the the blanks)

Answer»

ANSWER:

not

Explanation:

MARK as BRAINLIEST PLS TY

Discussion

30.	Conversation of methyl chloride into methyl fluoride is known as
Answer» ANSWER: Flourification.....

30.

Conversation of methyl chloride into methyl fluoride is known as

Answer»

ANSWER:

Flourification.....

Discussion

31.	SECTION - Aect and write correct answer of the following questIdentify synthetic polymer amongst the following:(a) Linen(b) Jute(c) Silk(d) Terylene
Answer» ANSWER: I THINK it is OPTION d. TERYLENE

31.

SECTION - Aect and write correct answer of the following questIdentify synthetic polymer amongst the following:(a) Linen(b) Jute(c) Silk(d) Terylene

Answer»

ANSWER:

I THINK it is OPTION d. TERYLENE

Discussion

32.	Givereason for the followingKClO3 is good oxidizing agent
Answer» ANSWER: KClO3 is a good oxidizing AGENT as it LOSES electrons. please please please mark me as the BRAINLIEST!!

32.

Givereason for the followingKClO3 is good oxidizing agent

Answer»

ANSWER:

KClO3 is a good oxidizing AGENT as it LOSES electrons.

please please please mark me as the BRAINLIEST!!

Discussion

33.	Name the reagent which on reaction with glucose confirm the presence of hydroxyl group in glucose
Answer» ANSWER: H2SO4 is the CORRECT answer

33.

Name the reagent which on reaction with glucose confirm the presence of hydroxyl group in glucose

Answer»

ANSWER:

H2SO4 is the CORRECT answer

Discussion

34.	Name two metals which cannot diplave hydrogen ?
Answer» Answer: mercury and copper cannot displace HYDROGEN from DILUTE ACIDS as they are less REACTIVE then hydrogen Explanation:

34.

Name two metals which cannot diplave hydrogen ?

Answer»

Answer: mercury and copper cannot displace HYDROGEN from DILUTE ACIDS as they are less REACTIVE then hydrogen

Explanation:

Discussion

35.	Pls ans all questions.........
Answer» ANSWER: IX........2........VIII.......C

35.

Pls ans all questions.........

Answer»

ANSWER:

IX........2........VIII.......C

Discussion

36.	Plsss ans all the questions
Answer» EXPLANATION: Terylene H20 Now don't KNOW BRO..... SORRY

36.

Plsss ans all the questions

Answer»

EXPLANATION:

Terylene
H20

Now don't KNOW BRO.....

SORRY

Discussion

37.	From which milk is kefir obtained
Answer» ANSWER: From COW MILK its OBTAINED

37.

From which milk is kefir obtained

Answer»

ANSWER:

From COW MILK its OBTAINED

Discussion

38.	Why HCl is stronger acid compared to HF. I think HF is more ionic which may result in more dissociation.
Answer» ANSWER: YES you are RIGHT.....

38.

Why HCl is stronger acid compared to HF. I think HF is more ionic which may result in more dissociation.

Answer»

ANSWER:

YES you are RIGHT.....

Discussion

39.	23. Balance the following redox reaction in acidic mediumMnO4 + H+ + FeltMn2+ + H2O + Fe3+
Answer» Answer: MnO4 (-) + 8 H(+) + 5 FE (2+) ------> MN (2+) + 4 H2O + 5 Fe (3+)

39.

23. Balance the following redox reaction in acidic mediumMnO4 + H+ + FeltMn2+ + H2O + Fe3+

Answer»

Answer:

MnO4 (-) + 8 H(+) + 5 FE (2+) ------> MN (2+) + 4 H2O + 5 Fe (3+)

Discussion

40.	State three features of intensive system of keeping animals
Answer» Answer: Three main features of Intensive Farming are :- 1. Intensive farming is conducted in small area. 2. Intensive farming FOCUSES on high VALUE crops. 3. Production is DEPENDENT upon INPUTS and TECHNOLOGY used in Intensive Farming. Hope it will helps you.. mark as a brainliest please.

40.

State three features of intensive system of keeping animals

Answer»

Answer:

Three main features of Intensive Farming are :-

1. Intensive farming is conducted in small area.

2. Intensive farming FOCUSES on high VALUE crops.

3. Production is DEPENDENT upon INPUTS and TECHNOLOGY used in Intensive Farming.

Hope it will helps you..

mark as a brainliest please.

Discussion

41.	fill in the blanks ice wayer and steam look different but have different .............properties but they are .........the same
Answer» ANSWER: Physical Chemically It is the correct anwer plz plz FOLLOW me and mark this as BRAINLEST ANS dear LOVE ❤️ ❤️

41.

fill in the blanks ice wayer and steam look different but have different .............properties but they are .........the same

Answer»

ANSWER:

Physical

Chemically

It is the correct anwer plz plz FOLLOW me and mark this as BRAINLEST ANS dear LOVE ❤️ ❤️

Discussion

42.	(iv) Identify complex ion in which effective atomic number ofthe central metal ion is 35.(Given At. number of Co=27. Fe=26, Zn = 30)(a) [Zn(NH, "(b) [Fe(CN)61(e) [Fe(CN),J?(d) [Co (NH3)31"
Answer» ANSWER: the CORRECT answer is OPTION (d)

42.

(iv) Identify complex ion in which effective atomic number ofthe central metal ion is 35.(Given At. number of Co=27. Fe=26, Zn = 30)(a) [Zn(NH, "(b) [Fe(CN)61(e) [Fe(CN),J?(d) [Co (NH3)31"

Answer»

ANSWER:

the CORRECT answer is OPTION (d)

Discussion

43.	(iii) During oxidation of ferrous sulphate using mixture of dil.H,SO, and potassium dichromate; oxidation state ofchromium changes from(a) + 6 to +2(b) + 6 to +3(c) + 6 to +1(d) + 6 to + 4
Answer» ANSWER: C) +6 to +1 answer.......

43.

(iii) During oxidation of ferrous sulphate using mixture of dil.H,SO, and potassium dichromate; oxidation state ofchromium changes from(a) + 6 to +2(b) + 6 to +3(c) + 6 to +1(d) + 6 to + 4

Answer»

ANSWER:

C) +6 to +1 answer.......

Discussion

44.	(vii) Name the reagent whyhe reagent which on reaction with glucose confirmsthe presence of five hydroxyl groups in su(a) Hydroxyl amine(b) Bromine water(c) Dilute nitric acidDok Acetic anhydrideIn"
Answer» ANSWER: ??!!!! your QUESTION is not FRAMED PROPERLY...

44.

(vii) Name the reagent whyhe reagent which on reaction with glucose confirmsthe presence of five hydroxyl groups in su(a) Hydroxyl amine(b) Bromine water(c) Dilute nitric acidDok Acetic anhydrideIn"

Answer»

ANSWER:

??!!!! your QUESTION is not FRAMED PROPERLY...

Discussion

45.	Which among the following hydrides is not a reducing agentA .H2O B .H 2S c .H2Te D.H2se
Answer» ANSWER: H2SE is not AGENT REDUCING HYDRIDES

45.

Which among the following hydrides is not a reducing agentA .H2O B .H 2S c .H2Te D.H2se

Answer»

ANSWER:

H2SE is not AGENT REDUCING HYDRIDES

Discussion

46.	1.The electronic configuration of sodium is(1) [Ne]352(2) Ne] 3S(3) [Ar]45(4) [Ar] 45?
Answer» ANSWER: (2) (Ne) 3S because of SODIUM COMES after neon Neon has noble gas so we can WRITE (Ne) and sodium comes immediately after neon so write (Ne) 3s

46.

1.The electronic configuration of sodium is(1) [Ne]352(2) Ne] 3S(3) [Ar]45(4) [Ar] 45?

Answer»

ANSWER:

(2) (Ne) 3S

because of SODIUM COMES after neon

Neon has noble gas so we can WRITE (Ne) and sodium comes immediately after neon so write (Ne) 3s

Discussion

47.	Which of the following hydrides is NOT a reducing agent? A) H2O B) H2S C) H2Te D) H2Se
Answer» ANSWER: H2O is a oxidizing AGENT that's reason it is not a REDUCING agent

47.

Which of the following hydrides is NOT a reducing agent? A) H2O B) H2S C) H2Te D) H2Se

Answer»

ANSWER:

H2O is a oxidizing AGENT that's reason it is not a REDUCING agent

Discussion

48.	during oxidation of ferrous sulphate using mixture of dilute H2 S o4 and potassium dichromate Oxidation state of chromium change from
Answer» ANSWER:+6 to +2 Explanation:

48.

during oxidation of ferrous sulphate using mixture of dilute H2 S o4 and potassium dichromate Oxidation state of chromium change from

Answer»

ANSWER:+6 to +2

Explanation:

Discussion

49.	What is dry ice?why iss it so called
Answer» EXPLANATION: DRY ICE is solid carbon dioxide. It is primarily used to cool food products at lower temperature than what water ice can PROVIDE. It is CALLED dry ice because it sublimes and doesn't leave any residue i.e. changes from solid to gaseous state without turning to liquid pls mark me as the brainlist...

49.

What is dry ice?why iss it so called

Answer»

EXPLANATION:

DRY ICE is solid carbon dioxide. It is primarily used to cool food products at lower temperature than what water ice can PROVIDE.

It is CALLED dry ice because it sublimes and doesn't leave any residue i.e. changes from solid to gaseous state without turning to liquid

pls mark me as the brainlist...

Discussion

50.	2H2+O2 gives rise to 2H2O.Based on this reaction,how much of oxygen is required to combine 11.2L
Answer» ANSWER: i THINK it is helpfull to you and PLEASE MAKE it as brilliest answer

50.

2H2+O2 gives rise to 2H2O.Based on this reaction,how much of oxygen is required to combine 11.2L

Answer»

ANSWER:

i THINK it is helpfull to you and PLEASE MAKE it as brilliest answer

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Why nicl4 is paramagnetic while nico4 is diamagnetic through both are tetraheral

Chloride bromine and iodine identify by silver nitrate

Calculate the work done during the reaction represented by the following thermochemical equation at 300K :CH4 + 2O2 ➡️ CO2 + 2H20(g). (g). (g). (L)(R= 8.314 J/Kmol)

Work Done COMES 4.988 kJ

The dissociation of CO2 can be expressed as2Co 2Co +O2 . lf the 2 mol of CO2 is takeninitially and 40% of the CO2 is dissociatedcompletely. What is the total number of moles atequilibrium:-(1) 2.4 (2) 2.0 (3) 1.2 (4) 5​

Who is vishnushama shjandhjsbrhzjd​

The number of moles of methyl iodide required to prepare tetra methyl ammonium iodide from 1 mole of methyl amine is/are :a. 1b. 2c. 3d. 4

Identify a gas among the following: ClF, BrF, IF, IF7​

Find for the normality of 0.165 moles of Li2CO3 dissolved in O.324 dL of solution?

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3H2 +2N2=_______________​

What are the cofficients of the correctly balanced equation? ?fe2o3 +co - ?fe + ?co2

Calculate the molecular mass of CH³OH

Identify complex ion in which effective atomic number of the central metal ion is 35(Given At. number of Co = 27, Fe = 26, Zn = 30)a. [Zn(NH3)4]²+b. [Fe(CN)6]⁴-c. [Fe(CN)6]³‐d. [Co(NH3)6]³+

(x) Calculate the work done during the reaction represented bythe following thermochemical equation at 300 K:CH4 +202 → CO2 + 2H2O(g) (g) (g) (1)(R=8-314 JK-'mol-!)(a) +4.988 kJ(b). - 4.988 kJ(c) - 49.88 kJ(d) + 49.88 kJ​

5. Predict the atomic number and name of the element from the following quantum numbers.N=3, 1=2, m=0,s=-1/2​

What change took place when naphthalene balls disappear after some time

Defination of inter molecular force in liquid​

(x) Calculate the work done during the reaction represented bythe following thermochemical equation at 300 K:CH4 +202 → CO2 + 2H20(g) (g) (g) (1)(R = 8.314 JK-'mol-')(a) +4.988 kJ(b) -4.988 kJ(c) -49.88 kJ(d)+49.88 kJ

We watch movies as a result of ____________.​

(iii) During oxidation of ferrous sulphate using mixture of dil.H.SO, and potassium dichromate; oxidation state ofchromium changes from(a) +6 to + 2(b + 6 to + 3(c) + 6 to +1(d) + 6 to + 4​

A cation x2± has 2 proton what is is atomic number​

(C) TUTIiv) Identify complex ion in which effective atomic number ofthe central metal ion is 35.(Given At. number of Co = 27, Fe = 26, Zn = 30).| (a) [Zn(NH, P.(b) [Fe (CN) 14te) [Fe(CN), )(d) [Co (NH "Conversion of methyl chloride into methyl fluoride is knownasal pin​

A ______ person has difficulty in focusing on distant objects.( fill in the blanks ).​

Solution is kept in a test tube the solution could be​

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0.218g of a metal is dissolved in dil.HCl thevolume of hydrogen liberated at N.T.P reacts with 75ml of oxygen at N.T.P calculate the equivalent weight of metal

CH3Br in presence of na ether gives A and A IN presence of br2 gives B

Show the formation of na2o and mgO by the transfer of elctron

A sample of pure KHC2O4·H2C2O4·2H2O (three replaceable hydrogens) requires 46.2mL of 0.100M NaOH for titration. How many milliliters of 0.100M KMnO4 will the same-size sample react with?

Dysentery is a ________ bone disease.(fill in the the blanks) ​

Conversation of methyl chloride into methyl fluoride is known as

SECTION - Aect and write correct answer of the following questIdentify synthetic polymer amongst the following:(a) Linen(b) Jute(c) Silk(d) Terylene​

Givereason for the followingKClO3 is good oxidizing agent​

Name the reagent which on reaction with glucose confirm the presence of hydroxyl group in glucose​

Name two metals which cannot diplave hydrogen ?

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From which milk is kefir obtained​

Why HCl is stronger acid compared to HF. I think HF is more ionic which may result in more dissociation.

23. Balance the following redox reaction in acidic mediumMnO4 + H+ + FeltMn2+ + H2O + Fe3+​

State three features of intensive system of keeping animals

fill in the blanks ice wayer and steam look different but have different .............properties but they are .........the same

(iv) Identify complex ion in which effective atomic number ofthe central metal ion is 35.(Given At. number of Co=27. Fe=26, Zn = 30)(a) [Zn(NH, "(b) [Fe(CN)61(e) [Fe(CN),J?(d) [Co (NH3)31"​

(iii) During oxidation of ferrous sulphate using mixture of dil.H,SO, and potassium dichromate; oxidation state ofchromium changes from(a) + 6 to +2(b) + 6 to +3(c) + 6 to +1(d) + 6 to + 4​

(vii) Name the reagent whyhe reagent which on reaction with glucose confirmsthe presence of five hydroxyl groups in su(a) Hydroxyl amine(b) Bromine water(c) Dilute nitric acidDok Acetic anhydrideIn"​

Which among the following hydrides is not a reducing agentA .H2O B .H 2S c .H2Te D.H2se​

1.The electronic configuration of sodium is(1) [Ne]352(2) Ne] 3S(3) [Ar]45(4) [Ar] 45?​

Which of the following hydrides is NOT a reducing agent? A) H2O B) H2S C) H2Te D) H2Se

during oxidation of ferrous sulphate using mixture of dilute H2 S o4 and potassium dichromate Oxidation state of chromium change from​

What is dry ice?why iss it so called

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2H2+O2 gives rise to 2H2O.Based on this reaction,how much of oxygen is required to combine 11.2L

The dissociation of CO2 can be expressed as2Co 2Co +O2 . lf the 2 mol of CO2 is takeninitially and 40% of the CO2 is dissociatedcompletely. What is the total number of moles atequilibrium:-(1) 2.4 (2) 2.0 (3) 1.2 (4) 5

Who is vishnushama shjandhjsbrhzjd

Identify a gas among the following: ClF, BrF, IF, IF7

3H2 +2N2=_______________

(x) Calculate the work done during the reaction represented bythe following thermochemical equation at 300 K:CH4 +202 → CO2 + 2H2O(g) (g) (g) (1)(R=8-314 JK-'mol-!)(a) +4.988 kJ(b). - 4.988 kJ(c) - 49.88 kJ(d) + 49.88 kJ

5. Predict the atomic number and name of the element from the following quantum numbers.N=3, 1=2, m=0,s=-1/2

Defination of inter molecular force in liquid

We watch movies as a result of ____________.

(iii) During oxidation of ferrous sulphate using mixture of dil.H.SO, and potassium dichromate; oxidation state ofchromium changes from(a) +6 to + 2(b + 6 to + 3(c) + 6 to +1(d) + 6 to + 4

A cation x2± has 2 proton what is is atomic number

(C) TUTIiv) Identify complex ion in which effective atomic number ofthe central metal ion is 35.(Given At. number of Co = 27, Fe = 26, Zn = 30).| (a) [Zn(NH, P.(b) [Fe (CN) 14te) [Fe(CN), )(d) [Co (NH "Conversion of methyl chloride into methyl fluoride is knownasal pin

A ______ person has difficulty in focusing on distant objects.( fill in the blanks ).

Solution is kept in a test tube the solution could be

Dysentery is a ________ bone disease.(fill in the the blanks)

SECTION - Aect and write correct answer of the following questIdentify synthetic polymer amongst the following:(a) Linen(b) Jute(c) Silk(d) Terylene

Givereason for the followingKClO3 is good oxidizing agent

Name the reagent which on reaction with glucose confirm the presence of hydroxyl group in glucose

Pls ans all questions.........

Plsss ans all the questions

From which milk is kefir obtained

23. Balance the following redox reaction in acidic mediumMnO4 + H+ + FeltMn2+ + H2O + Fe3+

(iv) Identify complex ion in which effective atomic number ofthe central metal ion is 35.(Given At. number of Co=27. Fe=26, Zn = 30)(a) [Zn(NH, "(b) [Fe(CN)61(e) [Fe(CN),J?(d) [Co (NH3)31"

(iii) During oxidation of ferrous sulphate using mixture of dil.H,SO, and potassium dichromate; oxidation state ofchromium changes from(a) + 6 to +2(b) + 6 to +3(c) + 6 to +1(d) + 6 to + 4

(vii) Name the reagent whyhe reagent which on reaction with glucose confirmsthe presence of five hydroxyl groups in su(a) Hydroxyl amine(b) Bromine water(c) Dilute nitric acidDok Acetic anhydrideIn"

Which among the following hydrides is not a reducing agentA .H2O B .H 2S c .H2Te D.H2se

1.The electronic configuration of sodium is(1) [Ne]352(2) Ne] 3S(3) [Ar]45(4) [Ar] 45?

during oxidation of ferrous sulphate using mixture of dilute H2 S o4 and potassium dichromate Oxidation state of chromium change from