52639 + Interview Questions in Secondary School in Chemistry

1.	Why does fluorine show anomalous behaviour in its group?
Answer» ong>Answer: Because of its relative SMALL SIZE in its GROUP it sometime SHOWS anomalous behaviour

1.

Why does fluorine show anomalous behaviour in its group?

Answer»

ong>Answer:

Because of its relative SMALL SIZE in its GROUP it sometime SHOWS anomalous behaviour

Discussion

2.	What is the excited state electronic configuration of Beryllium?
Answer» ong> Answer: electron configuration will be 1s22s2. The configuration notation provides an easy way for scientists to write and communicate how electrons are arranged around the NUCLEUS of an ATOM. This makes it easier to understand and PREDICT how atoms will INTERACT to form chemical BONDS.

2.

What is the excited state electronic configuration of Beryllium?

Answer»

ong>

Answer:

electron configuration will be 1s22s2. The configuration notation provides an easy way for scientists to write and communicate how electrons are arranged around the NUCLEUS of an ATOM. This makes it easier to understand and PREDICT how atoms will INTERACT to form chemical BONDS.

Discussion

3.	A compound contains 4.07 % hydrogen, 24.27% carbon and 71.65 % chlorine by mass. Its molar mass is 98.96 g. What is its empirical formula ? Atomic masses of hydrogen, carbon and chlorine are 1.008, 12.000 and 35.453 u, respectively
Answer» ong>Explanation: Divide the given PERCENTAGES of ATOMS with their molecular masses H---4.07/1 =4.07 C---24.27/12 =2.02 Cl--71.65/35.5=2.01 step 2 divide all values with the lowest value obtained. H---4.07/2.01=2 C---2.02/2.01=1 Cl---2.01/2.01=1 therefore the EMPIRICAL formula is CH 2 Cl WEIGHT OF EMPIRICAL FORMULA=12+2+35.5=49.5 Given molecular weight =98.96 which is double of empirical weight .therefore molecular formula is C 2 H 4 Cl 2 . BY TEJAS KULKARNI PLEASE FOLLOW AND MARK AS BRAINLIST AND FOLLOW FOR MORE ANSWERS!!

3.

A compound contains 4.07 % hydrogen, 24.27% carbon and 71.65 % chlorine by mass. Its molar mass is 98.96 g. What is its empirical formula ? Atomic masses of hydrogen, carbon and chlorine are 1.008, 12.000 and 35.453 u, respectively

Answer»

ong>Explanation:

Divide the given PERCENTAGES of ATOMS with their molecular masses

H---4.07/1 =4.07

C---24.27/12 =2.02

Cl--71.65/35.5=2.01

step 2

divide all values with the lowest value obtained.

H---4.07/2.01=2

C---2.02/2.01=1

Cl---2.01/2.01=1

therefore the EMPIRICAL formula is

CH

2

Cl

WEIGHT OF EMPIRICAL FORMULA=12+2+35.5=49.5

Given molecular weight =98.96 which is double of empirical weight .therefore molecular formula is C

2

H

4

Cl

2

.

BY TEJAS KULKARNI PLEASE FOLLOW AND MARK AS BRAINLIST AND FOLLOW FOR MORE ANSWERS!!

Discussion

4.	Our univrse chemistry bits
Answer» ONG>ANSWER: our universe consists of many elements and the ELEMENT no doubt fall in chemistry.

Discussion

5.	The felling of molecular orbital take palce according to
Answer» ong>Answer: *PLEASE MARK AS BRAINLIST*

5.

The felling of molecular orbital take palce according to

Answer»

ong>Answer:

PLEASE MARK AS BRAINLIST

Discussion

6.	Can you cool a gas by increases its volume
Answer» ong>Hola♡ The FREQUENCY of atomic collisions decrease as air EXPANDS, therefore the air gets cooler. Temperature is just the average heat of a SUBSTANCE. That is, if you take the kinetic energy (heat) of all the particles in a given VOLUME, and divide by the volume you get the energy density, which we call temperature

6.

Can you cool a gas by increases its volume

Answer»

ong>Hola♡

The FREQUENCY of atomic collisions decrease as air EXPANDS, therefore the air gets cooler. Temperature is just the average heat of a SUBSTANCE. That is, if you take the kinetic energy (heat) of all the particles in a given VOLUME, and divide by the volume you get the energy density, which we call temperature

Discussion

7.	silver forms ccp lattice and x-ray studies of its crystal show that the edge length of its unit cell is 608.4pm calculate the dencity of silver ( atomic mass = 105.9u)
Answer» ONG>ANSWER: flrrhdylp UTAR o djfkxhgxfk su is GK m djx Explanation: gkfskdjsogd

7.

silver forms ccp lattice and x-ray studies of its crystal show that the edge length of its unit cell is 608.4pm calculate the dencity of silver ( atomic mass = 105.9u)

Answer» ONG>ANSWER:

flrrhdylp UTAR o djfkxhgxfk su is GK m djx

Explanation:

gkfskdjsogd

Discussion

8.	silver forms ccp lattice and x-ray studies of its crystal show that the edge length of its unit cell is 608.4pm calculate the dencity of silver ( atomic mass = 105.9u).
Answer» ONG>ANSWER: hchudusudjekejfjsjejk Explanation: kksjdjsjskekej2kwk2kwkwksks

8.

silver forms ccp lattice and x-ray studies of its crystal show that the edge length of its unit cell is 608.4pm calculate the dencity of silver ( atomic mass = 105.9u).

Answer» ONG>ANSWER:

hchudusudjekejfjsjejk

Explanation:

kksjdjsjskekej2kwk2kwkwksks

Discussion

9.	Explain laws of static friction.
Answer» ong>Explanation: Solution. First law: The limiting force of static friction (FL) is directly proportional to the normal reaction (N) between the two surfaces in CONTACT. ... Second law: The limiting force of friction is INDEPENDENT of the apparent area between the surfaces in contact, so long as the normal reaction REMAINS the same.

9.

Explain laws of static friction.

Answer»

ong>Explanation:

Solution. First law: The limiting force of static friction (FL) is directly proportional to the normal reaction (N) between the two surfaces in CONTACT. ... Second law: The limiting force of friction is INDEPENDENT of the apparent area between the surfaces in contact, so long as the normal reaction REMAINS the same.

Discussion

10.	The Hybridised state of N in R2 NH is
Answer» ONG>ANSWER: vqiqja akaozha Ioamqqnba jabqiz EXPLANATION: naiqqjnq nauaja jaoalL snsapq

10.

The Hybridised state of N in R2 NH is

Answer» ONG>ANSWER:

vqiqja akaozha Ioamqqnba jabqiz

EXPLANATION:

naiqqjnq nauaja jaoalL snsapq

Discussion

11.	In the ions experiment, we use anode and cathode. Can we separate the ions in a solution, without changing them to a normal molecule? Do they behave like normal molecules or not? Thanks for answering.
Answer» u>Solution :- Yes, in the ions seperation experiment, we use anode and cathode to seperate ions in the solution. The reason is because for the conduction of electricity in the solution, there should be MOVEMENT of electrons. When energy is passed, certain reactions take place at anode and cathode which makes ions dissociate and associate causing conduction of electricity. If ions won't dissociate at one terminal and then associate at another, then there will be no transfer of electrons causing no ION seperation. • Normal Molecule : Normal Molecule the molecule of an element WITHOUT any charge over it. • Required Answer :: No, we can't seperate ions without changing them to normal molecules. Actually when we use a Daniell Cell / Voltaic Cell / Galvanic Cell we take a molecule with a charge over it at both anode and cathode differently. One dissociates to give ions and another associates to take ions. Here ions refer to electron. Here it has been asked that if they will behave as a normal molecule or not. Try recalling the concept of electricity. For the conduction of electricity in a ELECTROLYTIC solution, electrons move from one terminal to another. In this TYPE of cell, anode is negative terminal and cathode is positive terminal. At cathode, reduction takes place making the molecule dissociate electrons and seperate ions becoming a normal molecule. At anoode, oxidation takes place making the molecule gain the lost electron and thus becoming ion and eventually a normal molecule. This means that for ion seperation, changing of molecules to normal molecules is necessary. ______________________________ ★ More to know :- • Voltaic Cell :: A cell which converts chemical energy to electrical energy. • Reduction : A process to loose electron . • Oxidation : To gain electron.

11.

In the ions experiment, we use anode and cathode. Can we separate the ions in a solution, without changing them to a normal molecule? Do they behave like normal molecules or not? Thanks for answering.

Answer»

u>Solution :-

Yes, in the ions seperation experiment, we use anode and cathode to seperate ions in the solution. The reason is because for the conduction of electricity in the solution, there should be MOVEMENT of electrons. When energy is passed, certain reactions take place at anode and cathode which makes ions dissociate and associate causing conduction of electricity. If ions won't dissociate at one terminal and then associate at another, then there will be no transfer of electrons causing no ION seperation.

• Normal Molecule : Normal Molecule the molecule of an element WITHOUT any charge over it.

• Required Answer ::

No, we can't seperate ions without changing them to normal molecules. Actually when we use a Daniell Cell / Voltaic Cell / Galvanic Cell we take a molecule with a charge over it at both anode and cathode differently. One dissociates to give ions and another associates to take ions. Here ions refer to electron.

Here it has been asked that if they will behave as a normal molecule or not. Try recalling the concept of electricity. For the conduction of electricity in a ELECTROLYTIC solution, electrons move from one terminal to another. In this TYPE of cell, anode is negative terminal and cathode is positive terminal. At cathode, reduction takes place making the molecule dissociate electrons and seperate ions becoming a normal molecule. At anoode, oxidation takes place making the molecule gain the lost electron and thus becoming ion and eventually a normal molecule. This means that for ion seperation, changing of molecules to normal molecules is necessary.

______________________________

★ More to know :-

• Voltaic Cell :: A cell which converts chemical energy to electrical energy.

• Reduction : A process to loose electron .

• Oxidation : To gain electron.

Discussion

12.	is a required to make 100kg of a solution containing 40% by mixing solution a containing 25% salt and solutions B continuing 50% salt
Answer» ONG>Explanation: A. To make 100 kg of a solution containing 40 % salt by mixing solution A (containing 25% salt) and solution B (containing 50% salt), the ...

Discussion

13.	When a gas is allowed to expand, what will be its effect on temperature
Answer» ong>Answer: As a GAS (like air) expands, the VALUE of V increases and this has the effect of increasing T (The temperature). As the energy needed to increase it's temperature must be supplied from somewhere, the gas takes the energy from the surrounding SYSTEM GIVING the effect of COOLING.

13.

When a gas is allowed to expand, what will be its effect on temperature

Answer»

ong>Answer:

As a GAS (like air) expands, the VALUE of V increases and this has the effect of increasing T (The temperature). As the energy needed to increase it's temperature must be supplied from somewhere, the gas takes the energy from the surrounding SYSTEM GIVING the effect of COOLING.

Discussion

14.	Write the molecular configuration of:Be2 andNO
Answer» ONG>ANSWER: σ1s 2 ,σ ∗ 1s 2 ,σ2s 2 ,σ ∗ 2S 2 Total no. of electrons in Be 2 =8. Electronic configuration according to MOLECULAR orbital theory: σ1s 2 ,σ ∗ 1s 2 ,σ2s 2 ,σ ∗ 2s 2

14.

Write the molecular configuration of:Be2 andNO

Answer» ONG>ANSWER:

σ1s

2

,σ

∗

1s

2

,σ2s

2

,σ

∗

2S

2

Total no. of electrons in Be

2

=8.

Electronic configuration according to MOLECULAR orbital theory:

σ1s

2

,σ

∗

1s

2

,σ2s

2

,σ

∗

2s

2

Discussion

15.	15 /10⁶×100 is equals to ? please explain stepwise.
Answer» ONG>Explanation: 15 /10⁶×100 15/1000000×100 15/10000 =15/10^4

15.

15 /10⁶×100 is equals to ? please explain stepwise.

Answer» ONG>Explanation:

15 /10⁶×100

15/1000000×100

15/10000

=15/10^4

Discussion

16.	Which variables kept constant in charles law
Answer» ong>ANSWER: Since pressure is kept constant, the only variable that is manipulated is temperature. This means that we can use Charles's LAW in ORDER to compare VOLUME and temperature. Since volume and temperature are on opposite sides of the ideal gas law, they are directly proportional to ONE another

16.

Which variables kept constant in charles law

Answer»

ong>ANSWER:

Since pressure is kept constant, the only variable that is manipulated is temperature. This means that we can use Charles's LAW in ORDER to compare VOLUME and temperature. Since volume and temperature are on opposite sides of the ideal gas law, they are directly proportional to ONE another

Discussion

17.	4. Write the IUPAC name of following complexes(a) [Pt(NH3)2 Cl(NO2)
Answer» ong>ANSWER: the IUPAC name of FOLLOWING COMPLEXES (a) [Pt(NH3)2 CL(NO2)

17.

4. Write the IUPAC name of following complexes(a) [Pt(NH3)2 Cl(NO2)

Answer»

ong>ANSWER:

the IUPAC name of FOLLOWING COMPLEXES

(a) [Pt(NH3)2 CL(NO2)

Discussion

18.	24. Which statement does not describe a property of a weak acid in solution?
Answer» ONG>ANSWER: it has a PH of between 8 and 9 Explanation: I HOPE IT IS HELPFUL FOR

18.

24. Which statement does not describe a property of a weak acid in solution?

Answer» ONG>ANSWER:

it has a PH of between 8 and 9

Explanation:

I HOPE IT IS HELPFUL FOR

Discussion

19.	2. Which of the following changes is not correctly matched? a. Formation of cloudDesirable change b. Growth of a plant - Slow changeC. Swinging of a pendulum – Periodic change d. Burning of wood - Physical change
Answer» ONG>Answer: OPTION (C) bcoz it has periodic CHANGE it

19.

2. Which of the following changes is not correctly matched? a. Formation of cloudDesirable change b. Growth of a plant - Slow changeC. Swinging of a pendulum – Periodic change d. Burning of wood - Physical change

Answer» ONG>Answer:

OPTION (C)

bcoz it has periodic CHANGE it

Discussion

20.	24. Which statement does not describe a property of a weak acid in solution? a it forms a salt with sodium hydroxide
Answer» ong>Answer: *sorry* I am trying to get the answer to your SITE and I will GIVE you the answer to your site and I will give you the answer *you* *are* *not* *you* I WOULD like to day

20.

24. Which statement does not describe a property of a weak acid in solution? a it forms a salt with sodium hydroxide

Answer»

ong>Answer:

sorry I am trying to get the answer to your SITE and I will GIVE you the answer to your site and I will give you the answer you are not you I WOULD like to day

Discussion

21.	3. Sulphuric acid has highest importancein chemical Industry. Why?
Answer» ONG>Answer: Hii, Explanation: $\huge\underline{\underline{\boxed{\mathbb\pink{ANSWER}}}}$ In modern INDUSTRY, SULFURIC acid is an important commodity CHEMICAL, and is used primarily for the production of phosphoric acid. It is also good for removing oxidation from iron and steel, so it is used in large QUANTITIES by metal manufacturers. Sulfuric acid is a very dangerous chemical. Hope it will help you.... # XxLovingBoyxX ❤️

21.

3. Sulphuric acid has highest importancein chemical Industry. Why?

Answer» ONG>Answer:

Hii,

Explanation:

$\huge\underline{\underline{\boxed{\mathbb\pink{ANSWER}}}}$

In modern INDUSTRY, SULFURIC acid is an important commodity CHEMICAL, and is used primarily for the production of phosphoric acid. It is also good for removing oxidation from iron and steel, so it is used in large QUANTITIES by metal manufacturers. Sulfuric acid is a very dangerous chemical.

Hope it will help you....

# XxLovingBoyxX ❤️

Discussion

22.	3. Which of the following changes is a fast change? Formation of day and nightc. Burning of paperb. Changes in sedd. Weathering ofed
Answer» ONG>ANSWER: BURNING of paper Explanation: here is the RIGHT answer

22.

3. Which of the following changes is a fast change? Formation of day and nightc. Burning of paperb. Changes in sedd. Weathering ofed

Answer» ONG>ANSWER:

BURNING of paper

Explanation:

here is the RIGHT answer

Discussion

23.	Hydrolysis of MgSO4 in boiler water forms the precipitate of_______. *
Answer» ONG>ANSWER: don't now FIND you're own

Discussion

24.	15 /10–³ ×100 is equals to ? please explain stepwise.
Answer» ONG>EXPLANATION: $= > \frac{15}{ {10}^{3} } \times 100$ $= > \frac{15}{ {10}^{3} } \times {10}^{2}$ $= > 15 \times {10}^{(3 - 2)}$ $= > 15 \times 10$ $= > 150 \: ans..$

24.

15 /10–³ ×100 is equals to ? please explain stepwise.

Answer» ONG>EXPLANATION:

$= > \frac{15}{ {10}^{3} } \times 100$

$= > \frac{15}{ {10}^{3} } \times {10}^{2}$

$= > 15 \times {10}^{(3 - 2)}$

$= > 15 \times 10$

$= > 150 \: ans..$

Discussion

25.	Explain entropy and spontaneity of reactions.
Answer» ong>Answer: The best INDICATOR of spontaneity in a reaction is the CHANGE in Entropy (S or DS). The Second Law of Thermodynamics STATES that for a reaction to be spontaneous, there must be an increase in entropy. Entropy is often defined as a measure of the disorder of a SYSTEM, this is not a very accurate definition. Explanation:

25.

Explain entropy and spontaneity of reactions.

Answer»

ong>Answer:

The best INDICATOR of spontaneity in a reaction is the CHANGE in Entropy (S or DS). The Second Law of Thermodynamics STATES that for a reaction to be spontaneous, there must be an increase in entropy. Entropy is often defined as a measure of the disorder of a SYSTEM, this is not a very accurate definition.

Explanation:

Discussion

26.	Differentiate between evaporation and condensation with suitable example
Answer» Condensation is the OPPOSITE process where water vapour is converted to tiny droplets of water. Evaporation occurs before a liquid reaches its boiling point. Condensation is a PHASE change regardless of the temperature. ... The gas then CONDENSES to EITHER a liquid or even a solid. hope it help you Here is AVNI, hello please mark my answer brainliest

26.

Differentiate between evaporation and condensation with suitable example

Answer»

Condensation is the OPPOSITE process where water vapour is converted to tiny droplets of water. Evaporation occurs before a liquid reaches its boiling point. Condensation is a PHASE change regardless of the temperature. ... The gas then CONDENSES to EITHER a liquid or even a solid.

hope it help you

Here is AVNI, hello

please mark my answer brainliest

Discussion

27.	Give the name of the substances produced from the hydrolysis of the triacyl glyceride given below . O // CH2OC(CH2)16CH3 O // CHOC(CH2)7CH=CH(CH2)7CH3 O // CH2OC(CH2)14CH3
Answer» ONG>Explanation: OPTION 3 is CORRECT answer

Discussion

28.	15/10 ⁶×100 is equals to ? please answer it in steps .
Answer» > ਇਕ 10 ਦੀ ਸ਼ਕਤੀ ਦੇ ਕਿਸੇ ਵੀ ਹੈ ਪੂਰਨ ਅੰਕ ਸ਼ਕਤੀ ਗਿਣਤੀ ਦੇ ਦਸ ; ਦੂਜੇ ਸ਼ਬਦਾਂ ਵਿਚ, ਦਸ ਗੁਣਾ ਆਪਣੇ ਆਪ ਵਿਚ ਕਈ ਵਾਰ ਗੁਣਾ ਕਰਦਾ ਹੈ (ਜਦੋਂ ਸ਼ਕਤੀ ਇਕ ਸਕਾਰਾਤਮਕ ਪੂਰਨ ਅੰਕ ਹੁੰਦੀ ਹੈ). ਪਰਿਭਾਸ਼ਾ ਅਨੁਸਾਰ, ਪਹਿਲੇ ਨੰਬਰ ਵਿੱਚ ਇੱਕ ਦੀ ਸ਼ਕਤੀ (ਜ਼ੀਰੋਥ ਪਾਵਰ) ਹੈ. ਦਸਾਂ ਦੀਆਂ ਪਹਿਲੀਆਂ ਕੁਝ ਗੈਰ-ਨਕਾਰਾਤਮਕ ਸ਼ਕਤੀਆਂ ਹਨ:

28.

15/10 ⁶×100 is equals to ? please answer it in steps .

Answer»

>

ਇਕ 10 ਦੀ ਸ਼ਕਤੀ ਦੇ ਕਿਸੇ ਵੀ ਹੈ ਪੂਰਨ ਅੰਕ ਸ਼ਕਤੀ ਗਿਣਤੀ ਦੇ ਦਸ ; ਦੂਜੇ ਸ਼ਬਦਾਂ ਵਿਚ, ਦਸ ਗੁਣਾ ਆਪਣੇ ਆਪ ਵਿਚ ਕਈ ਵਾਰ ਗੁਣਾ ਕਰਦਾ ਹੈ (ਜਦੋਂ ਸ਼ਕਤੀ ਇਕ ਸਕਾਰਾਤਮਕ ਪੂਰਨ ਅੰਕ ਹੁੰਦੀ ਹੈ). ਪਰਿਭਾਸ਼ਾ ਅਨੁਸਾਰ, ਪਹਿਲੇ ਨੰਬਰ ਵਿੱਚ ਇੱਕ ਦੀ ਸ਼ਕਤੀ (ਜ਼ੀਰੋਥ ਪਾਵਰ) ਹੈ. ਦਸਾਂ ਦੀਆਂ ਪਹਿਲੀਆਂ ਕੁਝ ਗੈਰ-ਨਕਾਰਾਤਮਕ ਸ਼ਕਤੀਆਂ ਹਨ:

Discussion

29.	Is (R)-lactic acid dextrorotatory or levorotatory?
Answer» ONG>ANSWER: If a compound rotates plane polarized light in the clockwise (+) direction, it is said to be dextrorotatory, while if it rotates light in the counterclockwise (-) direction it is levorotatory. Explanation:

29.

Is (R)-lactic acid dextrorotatory or levorotatory?

Answer» ONG>ANSWER:

If a compound rotates plane polarized light in the clockwise (+) direction, it is said to be dextrorotatory, while if it rotates light in the counterclockwise (-) direction it is levorotatory.

Explanation:

Discussion

30.	Some drastic steps Have Been taken against corruption.active
Answer» ong>Answer: they have TAKEN some DRASTIC STEPS against corruption

30.

Some drastic steps Have Been taken against corruption.active

Answer»

ong>Answer:

they have TAKEN some DRASTIC STEPS against corruption

Discussion

31.	Explain by examples : (a) Complete (b) Conde-nsed and (c) Bond-line structural formulas
Answer» ong>EXPLANATION: uc FB uddeshy thu un by GF dj kuch

31.

Explain by examples : (a) Complete (b) Conde-nsed and (c) Bond-line structural formulas

Answer»

ong>EXPLANATION:

uc FB uddeshy thu un by GF dj kuch

Discussion

32.	CH³-ch²-o-ch³-ch²-ch²-oh- are
Answer» ong>ANSWER: Acetone also known as PROPANONE or dimethyla ketone. This ANS for first compound. Explanation: i think it is helpful for u

32.

CH³-ch²-o-ch³-ch²-ch²-oh- are

Answer»

ong>ANSWER:

Acetone also known as PROPANONE or dimethyla ketone. This ANS for first compound.

Explanation:

i think it is helpful for u

Discussion

33.	Answers this questionvaak banayo right answer will be mark as brainliest
Answer» ONG>Answer: plese DROP some 100 points question if your ACOUNT is deting ....we will getv some points

Discussion

34.	The SI unit of molae conductivity is
Answer» ong>ANSWER: MOLAR conductivity has the SI unit S m2 mol−1.

34.

The SI unit of molae conductivity is

Answer»

ong>ANSWER:

MOLAR conductivity has the SI unit S m2 mol−1.

Discussion

35.	EC ExercisesA. Tick the most appropriate answer.1. Attractive forces that hold atoms or ions together to form molecules or compounds are calleda. ionic bonds.b. covalent bonds. C. chemical bonds.d. none of thesedion called
Answer» ong>Answer: answer A ionic BOND because atoms TOGETHER FORM

35.

EC ExercisesA. Tick the most appropriate answer.1. Attractive forces that hold atoms or ions together to form molecules or compounds are calleda. ionic bonds.b. covalent bonds. C. chemical bonds.d. none of thesedion called

Answer»

ong>Answer:

answer

A ionic BOND

because atoms TOGETHER FORM

Discussion

36.	Convert -30.0 celcies into kelvin unit
Answer» ONG>ANSWER: -22 Explanation: (-30°C × 9/5) + 32 = -22°F

36.

Convert -30.0 celcies into kelvin unit

Answer» ONG>ANSWER:

-22

Explanation:

(-30°C × 9/5) + 32 = -22°F

Discussion

37.	जल तथा ऐल्कोहॉल के निश्चित आयतन को मिश्रित करने पर मिश्रण का आयतन प्रारम्भ में लिए गये जल तथा ऐल्कोहॉल के आयतनों के योग से कम हो जाता है, क्यों?
Answer» ONG>ANSWER: Kzrkaaritootstaswlitsiktsksktaot EL SEKT

Discussion

38.	In the first-order reaction the cone. of reaction decrease from 20m mol dm^-3 to 8m mol dm^-3 in 38min. What is half life of the reaction
Answer» ONG>ANSWER: SORRY I didn't KNOW answer

Discussion

39.	Figures. That is, 37.7. 5. Following data was obtained for concentration of iron in a water sample. 11.2, 116, 110, 111ppm. Predict whether the result 11.6 be rejected using Q-test, 2.5d rule and 4d rule. The 90%- value for 4 observations is 0.765Solution:
Answer» ONG>Answer: 110 hshdufisiiaidiguvuycushsuduv

Discussion

40.	The boiling point of solution containing 2.62g of substance A in 100g of water is higher by 0.0512 than the boiling point pure water. The molar mass of substance is________( kb= 5.12 km-1)
Answer» ONG>EXPLANATION: Click here to get an ANSWER to your QUESTION ✍️ Which of ... Gavvia Keto Advanced Weight Loss Formula ... in 100G of water is higher by 0.0512 than the boiling point ...

Discussion

41.	Is silicon dioxide (SiO2) ionic compound or a covalent compound?
Answer» ong>Explanation: Nitrogen monoxide (NO) will be a COVALENTLY BOUND molecule (two non-metals), silicon DIOXIDE (SiO2) will be a covalently bound molecule (a semi-metal and a non-metal) and MGCL2 will be ionic (a metal and a non-metal).

41.

Is silicon dioxide (SiO2) ionic compound or a covalent compound?

Answer»

ong>Explanation:

Nitrogen monoxide (NO) will be a COVALENTLY BOUND molecule (two non-metals), silicon DIOXIDE (SiO2) will be a covalently bound molecule (a semi-metal and a non-metal) and MGCL2 will be ionic (a metal and a non-metal).

Discussion

42.	Explain ozonolysis of ethene
Answer» ong>Answer: OZONOLYSIS is an organic REACTION where the unsaturated bonds of alkenes, alkynes, or azo compounds are cleaved with ozone. Alkenes and alkynes form organic compounds in which the multiple carbon–carbon bond has been replaced by a carbonyl GROUP while azo compounds form nitrosamines.

42.

Explain ozonolysis of ethene

Answer»

ong>Answer:

OZONOLYSIS is an organic REACTION where the unsaturated bonds of alkenes, alkynes, or azo compounds are cleaved with ozone. Alkenes and alkynes form organic compounds in which the multiple carbon–carbon bond has been replaced by a carbonyl GROUP while azo compounds form nitrosamines.

Discussion

43.	On adding excess salt to a solution it shows no change in the solubility this shows
Answer» ong>Answer: When the solution EQUILIBRIUM point is reached and no more solute will dissolve, the solution is SAID to be saturated. A saturated solution is a solution that contains the maximum amount of solute that is capable of being dissolved. Explanation: mark me as the BRAINLIEST

43.

On adding excess salt to a solution it shows no change in the solubility this shows

Answer»

ong>Answer:

When the solution EQUILIBRIUM point is reached and no more solute will dissolve, the solution is SAID to be saturated. A saturated solution is a solution that contains the maximum amount of solute that is capable of being dissolved.

Explanation:

mark me as the BRAINLIEST

Discussion

44.	Dieckmann ki cycloalkane chakriyakaran sanshleshan vidhi par tippani likhiye, B.sc. questions
Answer» ONG>ANSWER: acha Explanation: gbbbbr bnra DIKHA MILKHA

44.

Dieckmann ki cycloalkane chakriyakaran sanshleshan vidhi par tippani likhiye, B.sc. questions

Answer» ONG>ANSWER:

acha

Explanation:

gbbbbr bnra DIKHA MILKHA

Discussion

45.	Toof methand is need to heat 2000 ime!Water from 200 to 38°C.
Answer» ONG>Answer: yes Explanation: PLEASE MARK it as brainliest

45.

Toof methand is need to heat 2000 ime!Water from 200 to 38°C.

Answer» ONG>Answer:

yes

Explanation:

PLEASE MARK it as brainliest

Discussion

46.	The boiling point of solution containing 2.62g of substance A in 100g of water is higher by 0.0512 than the boiling point pure water. The molar mass of substance is________ kb= 5.12 km-1
Answer» ong>ANSWER: are BHAI so jao ITNA rat me kon QUESTION krta hai soo jao

46.

The boiling point of solution containing 2.62g of substance A in 100g of water is higher by 0.0512 than the boiling point pure water. The molar mass of substance is________ kb= 5.12 km-1

Answer»

ong>ANSWER:

are BHAI so jao ITNA rat me kon QUESTION krta hai

soo jao

Discussion

47.	100ml of hydrogen combine with 50ml of oxygen to give 100 ml of water how?
Answer» ong>ANSWER: The "amounts" can be in MLS or moles as long as both H2 and O2 are being measured at the same temperature and pressure. So, this DOES NOT violate the law of conservation of MASS. The same will be true with 100 ML H2 and 50 ml O2 to MAKE 100 ml H2O as long as they are at the same temperature and pressure

47.

100ml of hydrogen combine with 50ml of oxygen to give 100 ml of water how?

Answer»

ong>ANSWER:

The "amounts" can be in MLS or moles as long as both H2 and O2 are being measured at the same temperature and pressure. So, this DOES NOT violate the law of conservation of MASS. The same will be true with 100 ML H2 and 50 ml O2 to MAKE 100 ml H2O as long as they are at the same temperature and pressure

Discussion

48.	About 89% of water by weight is oxygen
Answer» ONG>ANSWER: in our BODY?? how's that? INSUFFICIENT INFORMATION

48.

About 89% of water by weight is oxygen

Answer» ONG>ANSWER:

in our BODY??

how's that?

INSUFFICIENT INFORMATION

Discussion

49.	Write the electronic configuration and draw box diagrams for oxygen (Z=8) magnesium ( Z=12)
Answer» ONG>ANSWER: O=1s^2 2s^2 2p^4 ;MG= 1s^2 2s^2 2p^6 3s^2 Explanation:

49.

Write the electronic configuration and draw box diagrams for oxygen (Z=8) magnesium ( Z=12)

Answer» ONG>ANSWER:

O=1s^2 2s^2 2p^4 ;MG= 1s^2 2s^2 2p^6 3s^2

Explanation:

Discussion

50.	(vi) Cusoy 5H20 CuSO4+5H20 Kc expression of the above equation?
Answer» ONG>EXPLANATION: For the given chemical EQUATION: The expression of for above equation follows: Equilibrium constant in terms of ... The Equilibrium Constant For The Reaction As Written Is K =([CuSO4][H2O]5) / [ CuSO4 . 5H2O] .. 6 The expressions of $K_p\text{ and }K_c$ are written as.Explanation:Equilibrium constant

50.

(vi) Cusoy 5H20 CuSO4+5H20 Kc expression of the above equation?

Answer» ONG>EXPLANATION:

For the given chemical EQUATION: The expression of for above equation follows: Equilibrium constant in terms of ...

The Equilibrium Constant For The Reaction As Written Is K =([CuSO4][H2O]5) / [ CuSO4 . 5H2O] ..

6

The expressions of $K_p\text{ and }K_c$ are written as.Explanation:Equilibrium constant

Discussion

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