5598 + Interview Questions in Primary School in Chemistry Page 19 InterviewSolution

901.	Please give me the write answer please
Answer» Answer: example of photodecomposition REACTION is DECOMPOSITION of hydrogen PEROXIDE under the PRESENCE of sunlight. Hydrogen peroxide is decomposed to water and oxygen gas.

901.

Please give me the write answer please

Answer»

Answer:

example of photodecomposition REACTION is DECOMPOSITION of hydrogen PEROXIDE under the PRESENCE of sunlight. Hydrogen peroxide is decomposed to water and oxygen gas.

Discussion

902.	I am backkese ho dostoheheheeeheheheee
Answer» Answer: hum thek hai ap kese ho Explanation: Hi how are you have a GREAT day ahead I N s t a g R a m-yasir 189 S n a p c h a t-yasirfarooqui_9 if you want to become my friend then m e ss AGE me I'm not forcing anyone

902.

I am backkese ho dostoheheheeeheheheee

Answer»

Answer:

hum thek hai ap kese ho

Explanation:

Hi how are you have a GREAT day ahead

I N s t a g R a m-yasir 189

S n a p c h a t-yasirfarooqui_9

if you want to become my friend then

m e ss AGE me

I'm not forcing anyone

Discussion

903.	What is chemistry..??
Answer» Answer: $\large\underline{\sf{Solution-}}$ Given that, A die is rolled 8 times and getting an even number is CONSIDERED as success denoted by event A. So, number of independent trials, n = 8. Let assume that p denotes the probability of success i.e getting an even number. and q denotes the failure i.e. not getting an even number. The possible OUTCOMES of even number when a die is rolled is { 2, 4, 6 } So, $\rm :\longmapsto\:p = \dfrac{3}{6} = \dfrac{1}{2}$ and $\rm :\longmapsto\:q = 1 - p = 1 - \dfrac{1}{2} = \dfrac{1}{2}$ Now, We know In Binomial Distribution, In a random experiment, consisting of n number of independent trials, the probability of getting r successes is $\red{\rm :\longmapsto\:\boxed{ \tt{ \: P(r) \: = \: ^nC_r \: {p}^{r} \: {q}^{n - r} \: }}}$ a) The probability that event A is success 5 times. $\red{\rm :\longmapsto\:P(5)}$ $\rm \: = \: ^8C_5 \: {\bigg[\dfrac{1}{2} \bigg]}^{5} {\bigg[\dfrac{1}{2} \bigg]}^{3}$ $\rm \: = \: \dfrac{8 \times 7 \times 6}{3 \times 2 \times 1} \times \dfrac{1}{32} \times \dfrac{1}{8}$ $\rm \: = \: \dfrac{7}{32}$ b) The probability of not getting A at all. $\red{\rm :\longmapsto\:P(0)}$ $\rm \: = \: ^8C_0 \: {\bigg[\dfrac{1}{2} \bigg]}^{8} {\bigg[\dfrac{1}{2} \bigg]}^{0}$ $\rm \: = \: \dfrac{1}{256}$ c) The probability of getting A at least one time. $\red{\rm :\longmapsto\: \displaystyle \sum^8_{r = 1} \: P(r)}$ $\rm \: = \: P(1) + P(2) + P(3) + - - + P(8)$ $\rm \: = \: 1 - P(0)$ $\rm \: = \: 1 - \dfrac{1}{256}$ $\rm \: = \: \dfrac{256 - 1}{256}$ $\rm \: = \: \dfrac{255}{256}$ ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ Additional Information :- 1. Mean of Binomial Distribution = np 2. VARIANCE of Binomial Distribution = npq 3. Mean > Variance

903.

What is chemistry..??

Answer»

Answer:

$\large\underline{\sf{Solution-}}$

Given that,

A die is rolled 8 times and getting an even number is CONSIDERED as success denoted by event A.

So, number of independent trials, n = 8.

Let assume that

p denotes the probability of success i.e getting an even number.

and

q denotes the failure i.e. not getting an even number.

The possible OUTCOMES of even number when a die is rolled is { 2, 4, 6 }

So,

$\rm :\longmapsto\:p = \dfrac{3}{6} = \dfrac{1}{2}$

and

$\rm :\longmapsto\:q = 1 - p = 1 - \dfrac{1}{2} = \dfrac{1}{2}$

Now, We know In Binomial Distribution,

In a random experiment, consisting of n number of independent trials, the probability of getting r successes is

$\red{\rm :\longmapsto\:\boxed{ \tt{ \: P(r) \: = \: ^nC_r \: {p}^{r} \: {q}^{n - r} \: }}}$

a) The probability that event A is success 5 times.

$\red{\rm :\longmapsto\:P(5)}$

$\rm \: = \: ^8C_5 \: {\bigg[\dfrac{1}{2} \bigg]}^{5} {\bigg[\dfrac{1}{2} \bigg]}^{3}$

$\rm \: = \: \dfrac{8 \times 7 \times 6}{3 \times 2 \times 1} \times \dfrac{1}{32} \times \dfrac{1}{8}$

$\rm \: = \: \dfrac{7}{32}$

b) The probability of not getting A at all.

$\red{\rm :\longmapsto\:P(0)}$

$\rm \: = \: ^8C_0 \: {\bigg[\dfrac{1}{2} \bigg]}^{8} {\bigg[\dfrac{1}{2} \bigg]}^{0}$

$\rm \: = \: \dfrac{1}{256}$

c) The probability of getting A at least one time.

$\red{\rm :\longmapsto\: \displaystyle \sum^8_{r = 1} \: P(r)}$

$\rm \: = \: P(1) + P(2) + P(3) + - - + P(8)$

$\rm \: = \: 1 - P(0)$

$\rm \: = \: 1 - \dfrac{1}{256}$

$\rm \: = \: \dfrac{256 - 1}{256}$

$\rm \: = \: \dfrac{255}{256}$

▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬

Additional Information :-

1. Mean of Binomial Distribution = np

2. VARIANCE of Binomial Distribution = npq

3. Mean > Variance

Discussion

904.	Cyclopenta dienyl anion is aromatic (-) Answer any 8 questions from 13 to 28. Eac (i) State the law of definite proportion. . (ii) Define limiting reagent of a reaction.
Answer» ANSWER: As long as a compound has 4n+2 π electrons, it does not matter if the MOLECULE is neutral or has a charge. For EXAMPLE, cyclopentadienyl anion is an aromatic ION. Cyclopentadienyl anion has 6 π electrons and fulfills the 4n+2 rule Explanation:

904.

Cyclopenta dienyl anion is aromatic (-) Answer any 8 questions from 13 to 28. Eac (i) State the law of definite proportion. . (ii) Define limiting reagent of a reaction.

Answer»

ANSWER:

As long as a compound has 4n+2 π electrons, it does not matter if the MOLECULE is neutral or has a charge. For EXAMPLE, cyclopentadienyl anion is an aromatic ION. Cyclopentadienyl anion has 6 π electrons and fulfills the 4n+2 rule

Explanation:

Discussion

905.	IR 2950, 7.00 cm HNMR ppm 2.5 1-0) Max m/3 - 108 - 108 cm+) no ( M+2 829 (Base peat) ratio of peak intensity of M & M.+2 find structure and formula
Answer» EXPLANATION: टी सी यू आर आंसर दो कि दीपावली को मैं स्वामिनी

905.

IR 2950, 7.00 cm HNMR ppm 2.5 1-0) Max m/3 - 108 - 108 cm+) no ( M+2 829 (Base peat) ratio of peak intensity of M & M.+2 find structure and formula

Answer»

EXPLANATION:

टी सी यू आर आंसर दो कि दीपावली को मैं स्वामिनी

Discussion

906.	30 gms of a salt saturates 75gms of water at 250C. What is the solubility of the salt and the mass/mass percent of the given solution respectively
Answer» Answer: AKASH you have to be EXACT and you are so cute and funny how I am so happy to HEAR from me to do it again for your loss I was like what the heck are they GOING on in my room and the other ONE was a little more time with my family is the only thing that I was like what the heck are they going on in my room and the other day and I don't know what to say I was like what the heck are they going on in my room and the

906.

30 gms of a salt saturates 75gms of water at 250C. What is the solubility of the salt and the mass/mass percent of the given solution respectively

Answer»

Answer:

AKASH you have to be EXACT and you are so cute and funny how I am so happy to HEAR from me to do it again for your loss I was like what the heck are they GOING on in my room and the other ONE was a little more time with my family is the only thing that I was like what the heck are they going on in my room and the other day and I don't know what to say I was like what the heck are they going on in my room and the

Discussion

907.	Short answer type questionswrite down the processes in sequential order involved into get the supply of drinking water at your home from the water works (flow chart)
Answer» I *DON'T* *KNOW* *YOU* *CAN'T* *BRAINLIEST* *THIS* *ANSWER* *THIS* *QUESTION* *IMPORTANT* *PLEASE* *MARK* ME AS BRAINLIEST FIRST

907.

Short answer type questionswrite down the processes in sequential order involved into get the supply of drinking water at your home from the water works (flow chart)

Answer»

I DON'T KNOW YOU CAN'T BRAINLIEST THIS ANSWER THIS QUESTION IMPORTANT PLEASE MARK ME AS BRAINLIEST FIRST

Discussion

908.	write down the processes in sequential order involved into get the supply of drinking water at your home from the water works (flow chart)
Answer» Answer: The water from the RESERVOIR is passed through a canal to a tank CALLED sedimentation tank. This tank helps the solid substances mixed in water to settle down. Then it is passes to ANOTHER tank called LOADING tank. It removes the SUSPENDED particles.

908.

write down the processes in sequential order involved into get the supply of drinking water at your home from the water works (flow chart)

Answer»

Answer:

The water from the RESERVOIR is passed through a canal to a tank CALLED sedimentation tank. This tank helps the solid substances mixed in water to settle down. Then it is passes to ANOTHER tank called LOADING tank. It removes the SUSPENDED particles.

Discussion

909.	What is adhesives and lubricants
Answer» ANSWER: the jvutirhoyuh fb Explanation: gkcxyvbjyvkbucgxkhkv

909.

What is adhesives and lubricants

Answer»

ANSWER:

the jvutirhoyuh fb

Explanation:

gkcxyvbjyvkbucgxkhkv

Discussion

910.	Does ice cream aroma travels farther or aroma of biryani- why
Answer» Answer: Aroma of biryani EXPLANATION: since biryani is warmer than ICE CREAM the aroma has more kinetic energy than ice cream so TRAVELS further

910.

Does ice cream aroma travels farther or aroma of biryani- why

Answer»

Answer:

Aroma of biryani

EXPLANATION:

since biryani is warmer than ICE CREAM the aroma has more kinetic energy than ice cream so TRAVELS further

Discussion

911.	A solution contains 50 ml of alcohol mixed with 150 ml of water .Calculate the concentration of the solution.
Answer» Answer: 25% is the required concentration of SOLUTION. Explanation: According to the Question It is given that , Volume of solute (alcohol ) = 50ml Volume of Solvent (water) = 150ml we have to calculate the concentration of the solution . FIRSTLY we calculate the volume of solution . = volume of solute + Volume of solvent = 50ml + 150ml = 200m/ As we know that the concentration in f solution is CALCULATED by •Concentration = Volume of Solute/Volume of solution × 100 % PUTTING the value we get ➻ Concentration of Solution = 50/200 × 100 % ➻ Concentration of Solution = 5000/200 % ➻ Concentration of Solution = 50/2 % ➻ Concentration of Solution = 25% Hence, the concentration of the solution is 25%

911.

A solution contains 50 ml of alcohol mixed with 150 ml of water .Calculate the concentration of the solution.

Answer»

Answer:

25% is the required concentration of SOLUTION.

Explanation:

According to the Question

It is given that ,

Volume of solute (alcohol ) = 50ml
Volume of Solvent (water) = 150ml

we have to calculate the concentration of the solution .

FIRSTLY we calculate the volume of solution .

= volume of solute + Volume of solvent

= 50ml + 150ml

= 200m/

As we know that the concentration in f solution is CALCULATED by

•Concentration = Volume of Solute/Volume of solution × 100 %

PUTTING the value we get

➻ Concentration of Solution = 50/200 × 100 %

➻ Concentration of Solution = 5000/200 %

➻ Concentration of Solution = 50/2 %

➻ Concentration of Solution = 25%

Hence, the concentration of the solution is 25%

Discussion

912.	Hello hello are any of !y friends online
Answer» Answer: YES l am ONLINE LET's FEEL ssr

912.

Hello hello are any of !y friends online

Answer»

Answer:

YES l am ONLINE

LET's FEEL ssr

Discussion

913.	What is the formula of sodium hydroxide?
Answer» ANSWER: NAOH Explanation: The FORMULA of SODIUM HYDROXIDE is NaOH

913.

What is the formula of sodium hydroxide?

Answer»

ANSWER:

NAOH

Explanation:

The FORMULA of SODIUM HYDROXIDE is

NaOH

Discussion

914.	What is the compound of sodium hydroxide?
Answer» Answer: #Please Mark Me As brainliest# Explanation: Sodium HYDROXIDE is a corrosive chemical sometimes known as LYE or caustic soda. It's chemical formula is NaOH. It is an ionic compound, because it is MADE of a metal ion, sodium (Na+), that is ATTRACTED to a nonmental ion, hydroxide (OH-). When it is a solid it is white and it has a high melting point of 604.4F

914.

What is the compound of sodium hydroxide?

Answer»

Answer:

#Please Mark Me As brainliest#

Explanation:

Sodium HYDROXIDE is a corrosive chemical sometimes known as LYE or caustic soda. It's chemical formula is NaOH. It is an ionic compound, because it is MADE of a metal ion, sodium (Na+), that is ATTRACTED to a nonmental ion, hydroxide (OH-). When it is a solid it is white and it has a high melting point of 604.4F

Discussion

915.	Ye que dekh lo fir mat kehana ki me bhul gai
Answer» AB phirse MT BHULNA XD( ˘ ³˘)♥

Discussion

916.	Sayali di kya aap mare freind banogi
Answer» ANSWER: NAHI I'm not INTERESTED in you

916.

Sayali di kya aap mare freind banogi

Answer»

ANSWER:

NAHI I'm not INTERESTED in you

Discussion

917.	If the solubility of Copper Sulphate in 100g of water at 45°C is 29 g:a.Evaluateits solubility in 50 g of water at the same temperature.b.Calculate its concentration in terms of mass by mass percentage of the solution.
Answer» Answer: Here ,MASS of solute (COPPER sulfate ) =110 g And ,we know that : Concentration of solution =Mass of solute Mass of solution ×100 =110550×100 =1005 =20per CENT (or 20 % ) Thus , the concentration of this copper sulfate solution is 20 per cent (or it is 20% copper sulfate solution ) EXPLANATION:

917.

If the solubility of Copper Sulphate in 100g of water at 45°C is 29 g:a.Evaluateits solubility in 50 g of water at the same temperature.b.Calculate its concentration in terms of mass by mass percentage of the solution.

Answer»

Answer:

Here ,MASS of solute (COPPER sulfate ) =110 g

And ,we know that :

Concentration of solution =Mass of solute Mass of solution ×100

=110550×100

=1005

=20per CENT (or 20 % )

Thus , the concentration of this copper sulfate solution is 20 per cent (or it is 20% copper sulfate solution )

EXPLANATION:

Discussion

918.	What is radium elements?
Answer» ANSWER: Radium is a chemical element with the symbol RA and atomic number 88. It is the sixth element in group 2 of the periodic table, ALSO known as the alkaline earth metals. Pure radium is silvery-white, but it readily reacts with nitrogen on exposure to air, forming a black surface layer of radium nitride

918.

What is radium elements?

Answer»

ANSWER:

Radium is a chemical element with the symbol RA and atomic number 88. It is the sixth element in group 2 of the periodic table, ALSO known as the alkaline earth metals. Pure radium is silvery-white, but it readily reacts with nitrogen on exposure to air, forming a black surface layer of radium nitride

Discussion

919.	What is radium element ?
Answer» Answer: Radium's main practical use has been in medicine, PRODUCING radon gas from radium chloride to be USED in RADIOTHERAPY for cancer. This was a process started in Marie Curie's time. Explanation: BRAINLIST pls

919.

What is radium element ?

Answer»

Answer:

Radium's main practical use has been in medicine, PRODUCING radon gas from radium chloride to be USED in RADIOTHERAPY for cancer. This was a process started in Marie Curie's time.

Explanation:

BRAINLIST pls

Discussion

920.	How do metals react with water explain with the help of equation and example
Answer» EXPLANATION: Metals react with water and produce a METAL oxide and hydrogen gas. Metal oxides that are soluble in water DISSOLVE in it to further form metal hydroxide. ... It also starts floating due to the bubbles of hydrogen gas sticking to its surface. Metals LIKE aluminium, iron and zinc do not react either with cold or hot water.

920.

How do metals react with water explain with the help of equation and example

Answer»

EXPLANATION:

Metals react with water and produce a METAL oxide and hydrogen gas. Metal oxides that are soluble in water DISSOLVE in it to further form metal hydroxide. ... It also starts floating due to the bubbles of hydrogen gas sticking to its surface. Metals LIKE aluminium, iron and zinc do not react either with cold or hot water.

Discussion

921.	MCU full form Answer the question
Answer» Answer: MCU = Marvel CINEMATIC Universe Explanation: Creater = Stan Lee

921.

MCU full form Answer the question

Answer»

Answer:

MCU = Marvel CINEMATIC Universe

Explanation:

Creater = Stan Lee

Discussion

922.	है। 3. एक रंगहीन लेड लवण को, जब गरम किया जाता है तो पीला अवशेष और भूरे रंग का धुआँ उत्पन्न होता है। A colourless lead salt, when heated then produces a yellow residue and brown colour of fumes. (a) अभिक्रिया के प्रकार का नाम बताइए। Name the type of reaction. (b) लेड लवण का नाम बताइए। Name the lead salt. on are he
Answer» ANSWER: is it HINDI SORRY I CANT answer your QUESTION sorry

922.

है। 3. एक रंगहीन लेड लवण को, जब गरम किया जाता है तो पीला अवशेष और भूरे रंग का धुआँ उत्पन्न होता है। A colourless lead salt, when heated then produces a yellow residue and brown colour of fumes. (a) अभिक्रिया के प्रकार का नाम बताइए। Name the type of reaction. (b) लेड लवण का नाम बताइए। Name the lead salt. on are he

Answer»

ANSWER:

is it HINDI SORRY I CANT answer your QUESTION sorry

Discussion

923.	What is Chemistry.Take points. But no spam.Answer the question.
Answer» Answer: Chemistry is the scientific study of the properties and behavior of MATTER. It is a natural science that COVERS the elements that make up matter to the COMPOUNDS composed of ATOMS, molecules and ions: .

923.

What is Chemistry.Take points. But no spam.Answer the question.

Answer»

Answer:

Chemistry is the scientific study of the properties and behavior of MATTER. It is a natural science that COVERS the elements that make up matter to the COMPOUNDS composed of ATOMS, molecules and ions: .

Discussion

924.	What do you mean by sediment and supernatant liquid with one example explain.
Answer» Answer: please Mark as brainiliest Explanation: The DEFINITION of a supernatant is a CLEAR fluid that rises to the top. An EXAMPLE of a supernatant is a fluid on top of a sediment. ... (of a liquid) Lying above a sediment or precipitate.

924.

What do you mean by sediment and supernatant liquid with one example explain.

Answer»

Answer:

please Mark as brainiliest

Explanation:

The DEFINITION of a supernatant is a CLEAR fluid that rises to the top. An EXAMPLE of a supernatant is a fluid on top of a sediment. ... (of a liquid) Lying above a sediment or precipitate.

Discussion

925.	What happens when we mix Hydrogen Peroxide with Potassium Iodide with Dish soap?
Answer» ANSWER: The potassium iodide is added, and the iodide ION that's PART of that compound attracts the oxygen in the hydrogen peroxide, breaking the bonds and rapidly transforming the hydrogen peroxide into water and oxygen gas. The oxygen molecules then get trapped by the soap, forming BUBBLES, Hostetler said. Explanation: mark me as brainliest

925.

What happens when we mix Hydrogen Peroxide with Potassium Iodide with Dish soap?

Answer»

ANSWER:

The potassium iodide is added, and the iodide ION that's PART of that compound attracts the oxygen in the hydrogen peroxide, breaking the bonds and rapidly transforming the hydrogen peroxide into water and oxygen gas. The oxygen molecules then get trapped by the soap, forming BUBBLES, Hostetler said.

Explanation:

mark me as brainliest

Discussion

926.	Explain how filtration and evaporation can separate solid liquid mixtures
Answer» $\huge\mathfrak\red{AnSwER..}$ In the process of filtration, the water PASSES through but the (solid) sand is left in the filter paper. In evaporation , water just CHANGES into water vapour. Solid is settled at bottom in evaporation process...

926.

Explain how filtration and evaporation can separate solid liquid mixtures

Answer»

$\huge\mathfrak\red{AnSwER..}$

In the process of filtration, the water PASSES through but the (solid) sand is left in the filter paper. In evaporation , water just CHANGES into water vapour. Solid is settled at bottom in evaporation process...

Discussion

927.	The element that forms an acidic oxide as well as a neutral oxide, and occurs as the hardest substance.
Answer» Carbon is the non-metallic ELEMENT which FORMS an acidic and neutral oxide. EXPLANATION: NORMALLY acidic oxides and neutral oxides are formed by the non-metals

Discussion

928.	Calculate (i) the percentage of oxygen in lime stone(ii) the percentage of sodium in washing soda
Answer» Calculate: I.the PERCENTAGE of oxygen in LIME stone :•in limestone, 40% is calcium and the rest is carbon and oxygen. (ii) the percentage of sodium in washing SODA :•From the chemical formula, washing soda contains 10 molecules of water. Hence, 62.9% of the water of crystallization in washing soda CRYSTALS.

928.

Calculate (i) the percentage of oxygen in lime stone(ii) the percentage of sodium in washing soda

Answer»

Calculate:

I.the PERCENTAGE of oxygen in LIME stone

:•in limestone, 40% is calcium and the rest is carbon and oxygen.

(ii) the percentage of sodium in washing SODA

:•From the chemical formula, washing soda contains 10 molecules of water. Hence, 62.9% of the water of crystallization in washing soda CRYSTALS.

Discussion

929.	Among phosphorus trihalides which halides are generated in situ
Answer» ANSWER:an INSTRUMENT for WRITING or drawing with ink, typically consisting of a metal nib or ball, or a nylon tip, fitted into a metal or plastic holder Explanation:PLZ mark me as a BRAINLIEST

929.

Among phosphorus trihalides which halides are generated in situ

Answer»

ANSWER:an INSTRUMENT for WRITING or drawing with ink, typically consisting of a metal nib or ball, or a nylon tip, fitted into a metal or plastic holder

Explanation:PLZ mark me as a BRAINLIEST

Discussion

930.	Formula is carbon dioxide
Answer» Answer: the FORMULA of carbon DIOXIDE is CO2 Explanation: hope it helps you..

930.

Formula is carbon dioxide

Answer»

Answer:

the FORMULA of carbon DIOXIDE is CO2

Explanation:

hope it helps you..

Discussion

931.	Why are the working tables and shelves in chemistry laboratory covered with tiles and not wood or metals?answer if u are the brainliest
Answer» Answer: There are different kinds of harmful and non-harmful chemicals in a chemistry lab. They may have a corrosive action on the wood. They may REACT with the METAL and may produce hazardous GASES which can cause HARM to US.

931.

Why are the working tables and shelves in chemistry laboratory covered with tiles and not wood or metals?answer if u are the brainliest

Answer»

Answer:

There are different kinds of harmful and non-harmful chemicals in a chemistry lab. They may have a corrosive action on the wood. They may REACT with the METAL and may produce hazardous GASES which can cause HARM to US.

Discussion

932.	Pl anyone give me thanks I need it
Answer» Answer: MARK me as BRAINALIST and I will THANK your answer s I have tahanked UR answer barick

932.

Pl anyone give me thanks I need it

Answer»

Answer:

MARK me as BRAINALIST and I will THANK your answer

s I have tahanked UR answer barick

Discussion

933.	Pls help me ro solve thisIF YOU HELP ME TO SOLVE THIS THEN I WILL MARK YOU AS BRAIN LIST AND GIVE YOU A THANKS
Answer» Answer: A) 1. Ag, AU (SILVER and gold) 2. HYDROGEN and oxygen 3. Salt solution 4. Air is an example of gas gas mixture. 5. Separation of constituents of air. B) 1. Sieving. 2. Fractional distillation. 3. Fractional distillation.

933.

Pls help me ro solve thisIF YOU HELP ME TO SOLVE THIS THEN I WILL MARK YOU AS BRAIN LIST AND GIVE YOU A THANKS

Answer»

Answer:

A) 1. Ag, AU (SILVER and gold)

2. HYDROGEN and oxygen

3. Salt solution

4. Air is an example of gas gas mixture.

5. Separation of constituents of air.

B) 1. Sieving.

2. Fractional distillation.

3. Fractional distillation.

Discussion

934.	Byegoing offmeri mumma chilla rahi hand Kunal bhaiya leave mat Krna mere aane ke baad btana kya hua
Answer» $3.00bje \: mlte \: shladdu \\$ $♥︎☺︎︎ \\ \\$

934.

Byegoing offmeri mumma chilla rahi hand Kunal bhaiya leave mat Krna mere aane ke baad btana kya hua

Answer»

$3.00bje \: mlte \: shladdu \\$

$♥︎☺︎︎ \\ \\$

Discussion

935.	Thik h jao kuch nhi hua to jaa kyu rahe hobye
Answer» ABHI TK flw bhi nhi kia ok me bhi unflw krhahu BYE

935.

Thik h jao kuch nhi hua to jaa kyu rahe hobye

Answer»

ABHI TK flw bhi nhi kia ok me bhi unflw krhahu BYE

Discussion

936.	Ok so can I have your intro please
Answer» ANSWER: Myself =,ANJALI CLASS =8 from =BIHAR

936.

Ok so can I have your intro please

Answer»

ANSWER:

Myself =,ANJALI

CLASS =8

from =BIHAR

Discussion

937.	What type chemical reaction occurs when electricity is passed through?
Answer» ANSWER: Electrolysis of water is a decomposition reaction ; a single reactant breaks down into more than one product. The breaking down of H 2 O into H 2 and O 2 by passing ELECTRICITY is known as electrolysis of water. Explanation: please mark me as Brainlist

937.

What type chemical reaction occurs when electricity is passed through?

Answer»

ANSWER:

Electrolysis of water is a decomposition reaction ; a single reactant breaks down into more than one product. The breaking down of H 2 O into H 2 and O 2 by passing ELECTRICITY is known as electrolysis of water.

Explanation:

please mark me as Brainlist

Discussion

938.	Ab bta v dohua kya btao btao btaobtana to padega
Answer» $kch \: nhi \: \\ pnts \: wst \\ mt \: kro \: bye \: tc$

938.

Ab bta v dohua kya btao btao btaobtana to padega

Answer»

$kch \: nhi \: \\ pnts \: wst \\ mt \: kro \: bye \: tc$

Discussion

939.	Which of the following can be separated using water condenser1.butane2. pentane3. ammonia4. Sulphur dioxide
Answer» ANSWER: HII GOOD morning this is your answer. Explanation: MARK me BRAINLIST.

939.

Which of the following can be separated using water condenser1.butane2. pentane3. ammonia4. Sulphur dioxide

Answer»

ANSWER:

HII

GOOD morning

this is your answer.

Explanation:

MARK me BRAINLIST.

Discussion

940.	Arey btao naa kya ho gaya
Answer» ANSWER: HI GUYS GOOD MORNING Explanation: hi guys good morning

940.

Arey btao naa kya ho gaya

Answer»

ANSWER:

HI GUYS GOOD MORNING

Explanation:

hi guys good morning

Discussion

941.	1.The ______is a mixture may be present in any ratio or proportion.2. The process of pouring the clear supernatant liquid without disturbing the sediment is called__________.Group : B ( Tick the most appropriate answer)(1 x 2=2)3.Which of the following is a correct statement for a compound :A compound has a definite composition / A compound does not have fixed melting and boiling points.4. By which of the following Method can common salt be obtained from seawater :- Filtration/ evaporationGroup C : Write True or False. If false then correct the statement (1 x2=2)5. sieving is a better method of separating Bran and wheat flour than winnowing6. Common salt sublimation on heating whereas ammonium chloride does notGroup D ( Answer the following question ) (2x4=8)7. What do you mean by refining?8. State two characteristics of a pure substance9. What do you mean by solvent and solution10. Give two example of sublime substance other than camphor or iodine
Answer» ANSWER: fdfgdffdfff Explanation:

941.

1.The is a mixture may be present in any ratio or proportion.2. The process of pouring the clear supernatant liquid without disturbing the sediment is called____.Group : B ( Tick the most appropriate answer)(1 x 2=2)3.Which of the following is a correct statement for a compound :A compound has a definite composition / A compound does not have fixed melting and boiling points.4. By which of the following Method can common salt be obtained from seawater :- Filtration/ evaporationGroup C : Write True or False. If false then correct the statement (1 x2=2)5. sieving is a better method of separating Bran and wheat flour than winnowing6. Common salt sublimation on heating whereas ammonium chloride does notGroup D ( Answer the following question ) (2x4=8)7. What do you mean by refining?8. State two characteristics of a pure substance9. What do you mean by solvent and solution10. Give two example of sublime substance other than camphor or iodine

Answer»

ANSWER:

fdfgdffdfff

Explanation:

Discussion

942.	Bye byegoing to dusra ID heheheeeheheheeebye usme genius pe jaana hbye
Answer» $byefrvr \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\$

942.

Bye byegoing to dusra ID heheheeeheheheeebye usme genius pe jaana hbye

Answer»

$byefrvr \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\$

Discussion

943.	An element “X” burns in air to form an oxide. This oxide neutralises sulphuric acid to form a salt. Which element is this?
Answer» Answer: The oxide formed by element X is metal oxide and in basic in nature. 2). The element X is metal. Only METALLIC oxides are basic that can REACT with acid to FORM salt.

943.

An element “X” burns in air to form an oxide. This oxide neutralises sulphuric acid to form a salt. Which element is this?

Answer»

Answer:

The oxide formed by element X is metal oxide and in basic in nature. 2). The element X is metal. Only METALLIC oxides are basic that can REACT with acid to FORM salt.

Discussion

944.	Kyu sad ho gaye kyahmmmmok bye
Answer» $nthng(ᗒᗣᗕ)՞ \\ \\ \\ \\ \\$

944.

Kyu sad ho gaye kyahmmmmok bye

Answer»

$nthng(ᗒᗣᗕ)՞ \\ \\ \\ \\ \\$

Discussion

945.	Answer for 1 questions
Answer» ANSWER: lalalalalalalalalalalalalal

945.

Answer for 1 questions

Answer»

ANSWER:

lalalalalalalalalalalalalal

Discussion

946.	______ have maximum diffusion rate.
Answer» 100 Explanation: PLEASE MARK the BRAIN nelist

946.

______ have maximum diffusion rate.

Answer»

100

Explanation:

PLEASE MARK the BRAIN nelist

Discussion

947.	Wowthanks a lotkissne sikhaya multiple thanks denemujhe v btao naaheheheeeheheheee
Answer» ANSWER: HI PLEASE mark me as BRAINLIEST Explanation: Brainliest mark karde Please

947.

Wowthanks a lotkissne sikhaya multiple thanks denemujhe v btao naaheheheeeheheheee

Answer»

ANSWER:

HI PLEASE mark me as BRAINLIEST

Explanation: Brainliest mark karde Please

Discussion

948.	Which of the following are contact forcesa)normal reaction force b)force between like poles of a magnet c)muscular force d)weight of a bodySome may have more than one correct selection.
Answer» Answer: EXPLANATION: The FORCES which act on bodies when they are in physical CONTACT. are called contact forces. For e.g. frictional force and force exerted on two bodies during a collision. The forces experienced by bodies even without being physically touched are called the non-contact forces. For e.g. GRAVITATIONAL force and Electrostatic force. Contact force: (a) frictional force (b) NORMAL reaction force (c) force of tension in a string Non-contact force: (d) gravitational force (e) electric force (f) magnetic force

948.

Which of the following are contact forcesa)normal reaction force b)force between like poles of a magnet c)muscular force d)weight of a bodySome may have more than one correct selection.

Answer»

Answer:

EXPLANATION:

The FORCES which act on bodies when they are in physical CONTACT. are called contact forces. For e.g. frictional force and force exerted on two bodies during a collision.

The forces experienced by bodies even without being physically touched are called the non-contact forces. For e.g. GRAVITATIONAL force and Electrostatic force.

Contact force: (a) frictional force (b) NORMAL reaction force (c) force of tension in a string

Non-contact force: (d) gravitational force (e) electric force (f) magnetic force

Discussion

949.	Yes heheheeeheheheeehello Kunal bhaiya kese hohmm
Answer» EXPLANATION: HELLO how are you PLEASE MARK me as BRAINLIST

949.

Yes heheheeeheheheeehello Kunal bhaiya kese hohmm

Answer»

EXPLANATION:

HELLO how are you PLEASE MARK me as BRAINLIST

Discussion

950.	Balance the equation step by step:I) NH⁴Cl + Ca(OH)² = CaCl² + NH³ + H²Oii) K²Cr²O⁷ + H²SO⁴ = K²SO⁴ + Cr²(SO⁴)³ + H²O + O²iii) Cu(NO³)² (in presence of small change) = CuO + NO² + O²PLS STEP BY STEP
Answer» Answer: 1)2NH4Cl+Ca(OH)2=CaCl2+2NH3+2H2O 2)2K2Cr2O7+8H2SO4=2K2SO4+2Cr2(SO4)3+8H2O+3O2 3)2CU(NO3)2=2CuO+4NO2+O2 Explanation: pl MARK as brainliest

950.

Balance the equation step by step:I) NH⁴Cl + Ca(OH)² = CaCl² + NH³ + H²Oii) K²Cr²O⁷ + H²SO⁴ = K²SO⁴ + Cr²(SO⁴)³ + H²O + O²iii) Cu(NO³)² (in presence of small change) = CuO + NO² + O²PLS STEP BY STEP

Answer»

Answer:

1)2NH4Cl+Ca(OH)2=CaCl2+2NH3+2H2O

2)2K2Cr2O7+8H2SO4=2K2SO4+2Cr2(SO4)3+8H2O+3O2

3)2CU(NO3)2=2CuO+4NO2+O2

Explanation:

pl MARK as brainliest

Discussion

Explore topic-wise InterviewSolutions in .

Please give me the write answer please​

I am backkese ho dostoheheheeeheheheee​

What is chemistry..??​

Cyclopenta dienyl anion is aromatic (-) Answer any 8 questions from 13 to 28. Eac (i) State the law of definite proportion. . (ii) Define limiting reagent of a reaction.​

IR 2950, 7.00 cm HNMR ppm 2.5 1-0) Max m/3 - 108 - 108 cm+) no ( M+2 829 (Base peat) ratio of peak intensity of M & M.+2 find structure and formula​

30 gms of a salt saturates 75gms of water at 250C. What is the solubility of the salt and the mass/mass percent of the given solution respectively​

Short answer type questionswrite down the processes in sequential order involved into get the supply of drinking water at your home from the water works (flow chart)​

write down the processes in sequential order involved into get the supply of drinking water at your home from the water works (flow chart)​

What is adhesives and lubricants​

Does ice cream aroma travels farther or aroma of biryani- why

A solution contains 50 ml of alcohol mixed with 150 ml of water .Calculate the concentration of the solution.​

Hello hello are any of !y friends online​

What is the formula of sodium hydroxide?​

What is the compound of sodium hydroxide?​

#Please Mark Me As brainliest#

Ye que dekh lo fir mat kehana ki me bhul gai​

Sayali di kya aap mare freind banogi​

If the solubility of Copper Sulphate in 100g of water at 45°C is 29 g:a.Evaluateits solubility in 50 g of water at the same temperature.b.Calculate its concentration in terms of mass by mass percentage of the solution.

What is radium elements?​

What is radium element ?​

How do metals react with water explain with the help of equation and example​

MCU full form Answer the question​

What is Chemistry.Take points. But no spam.Answer the question.​

What do you mean by sediment and supernatant liquid with one example explain.​

What happens when we mix Hydrogen Peroxide with Potassium Iodide with Dish soap?

Explain how filtration and evaporation can separate solid liquid mixtures​

In the process of filtration, the water PASSES through but the (solid) sand is left in the filter paper. In evaporation , water just CHANGES into water vapour. Solid is settled at bottom in evaporation process...

The element that forms an acidic oxide as well as a neutral oxide, and occurs as the hardest substance.

Calculate (i) the percentage of oxygen in lime stone(ii) the percentage of sodium in washing soda​

Among phosphorus trihalides which halides are generated in situ

Formula is carbon dioxide ​

Why are the working tables and shelves in chemistry laboratory covered with tiles and not wood or metals?answer if u are the brainliest​

Pl anyone give me thanks I need it​

Pls help me ro solve thisIF YOU HELP ME TO SOLVE THIS THEN I WILL MARK YOU AS BRAIN LIST AND GIVE YOU A THANKS​

Byegoing offmeri mumma chilla rahi hand Kunal bhaiya leave mat Krna mere aane ke baad btana kya hua​

Thik h jao kuch nhi hua to jaa kyu rahe hobye​

ABHI TK flw bhi nhi kia ok me bhi unflw krhahu BYE

Ok so can I have your intro please​

What type chemical reaction occurs when electricity is passed through?​

Ab bta v dohua kya btao btao btaobtana to padega​

Which of the following can be separated using water condenser1.butane2. pentane3. ammonia4. Sulphur dioxide​

Arey btao naa kya ho gaya​

Bye byegoing to dusra ID heheheeeheheheeebye usme genius pe jaana hbye​

An element “X” burns in air to form an oxide. This oxide neutralises sulphuric acid to form a salt. Which element is this?

Kyu sad ho gaye kyahmmmmok bye​

Answer for 1 questions ​

______ have maximum diffusion rate.​

Wowthanks a lotkissne sikhaya multiple thanks denemujhe v btao naaheheheeeheheheee​

Which of the following are contact forcesa)normal reaction force b)force between like poles of a magnet c)muscular force d)weight of a bodySome may have more than one correct selection.​

Yes heheheeeheheheeehello Kunal bhaiya kese hohmm​

Balance the equation step by step:I) NH⁴Cl + Ca(OH)² = CaCl² + NH³ + H²Oii) K²Cr²O⁷ + H²SO⁴ = K²SO⁴ + Cr²(SO⁴)³ + H²O + O²iii) Cu(NO³)² (in presence of small change) = CuO + NO² + O²PLS STEP BY STEP​

Please give me the write answer please

I am backkese ho dostoheheheeeheheheee

What is chemistry..??

Cyclopenta dienyl anion is aromatic (-) Answer any 8 questions from 13 to 28. Eac (i) State the law of definite proportion. . (ii) Define limiting reagent of a reaction.

IR 2950, 7.00 cm HNMR ppm 2.5 1-0) Max m/3 - 108 - 108 cm+) no ( M+2 829 (Base peat) ratio of peak intensity of M & M.+2 find structure and formula

30 gms of a salt saturates 75gms of water at 250C. What is the solubility of the salt and the mass/mass percent of the given solution respectively

Short answer type questionswrite down the processes in sequential order involved into get the supply of drinking water at your home from the water works (flow chart)

write down the processes in sequential order involved into get the supply of drinking water at your home from the water works (flow chart)

What is adhesives and lubricants

A solution contains 50 ml of alcohol mixed with 150 ml of water .Calculate the concentration of the solution.

Hello hello are any of !y friends online

What is the formula of sodium hydroxide?

What is the compound of sodium hydroxide?

Ye que dekh lo fir mat kehana ki me bhul gai

Sayali di kya aap mare freind banogi

What is radium elements?

What is radium element ?

How do metals react with water explain with the help of equation and example

MCU full form Answer the question

What is Chemistry.Take points. But no spam.Answer the question.

What do you mean by sediment and supernatant liquid with one example explain.

Explain how filtration and evaporation can separate solid liquid mixtures

Calculate (i) the percentage of oxygen in lime stone(ii) the percentage of sodium in washing soda

Formula is carbon dioxide

Why are the working tables and shelves in chemistry laboratory covered with tiles and not wood or metals?answer if u are the brainliest

Pl anyone give me thanks I need it

Pls help me ro solve thisIF YOU HELP ME TO SOLVE THIS THEN I WILL MARK YOU AS BRAIN LIST AND GIVE YOU A THANKS

Byegoing offmeri mumma chilla rahi hand Kunal bhaiya leave mat Krna mere aane ke baad btana kya hua

Thik h jao kuch nhi hua to jaa kyu rahe hobye

Ok so can I have your intro please

What type chemical reaction occurs when electricity is passed through?

Ab bta v dohua kya btao btao btaobtana to padega

Which of the following can be separated using water condenser1.butane2. pentane3. ammonia4. Sulphur dioxide

Arey btao naa kya ho gaya

Bye byegoing to dusra ID heheheeeheheheeebye usme genius pe jaana hbye

Kyu sad ho gaye kyahmmmmok bye

Answer for 1 questions

______ have maximum diffusion rate.

Wowthanks a lotkissne sikhaya multiple thanks denemujhe v btao naaheheheeeheheheee

Which of the following are contact forcesa)normal reaction force b)force between like poles of a magnet c)muscular force d)weight of a bodySome may have more than one correct selection.

Yes heheheeeheheheeehello Kunal bhaiya kese hohmm

Balance the equation step by step:I) NH⁴Cl + Ca(OH)² = CaCl² + NH³ + H²Oii) K²Cr²O⁷ + H²SO⁴ = K²SO⁴ + Cr²(SO⁴)³ + H²O + O²iii) Cu(NO³)² (in presence of small change) = CuO + NO² + O²PLS STEP BY STEP