Incorrect URL accessed!!!!

Punya Yadav 1 year, 8 months ago

This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

Few rules to keep homework help section safe, clean and informative.

Don't post personal information, mobile numbers and other details.
Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying.
Ask specific question which are clear and concise.

Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.

ANSWER

Difference between molarity and molality?

Posted by Malik Ujaiv 1 year, 8 months ago

CBSE > Class 12 > Chemistry

1 answers

Diana Chaudhary 1 year, 8 months ago

Molarity is the number of moles of solute dissolved in per unit vol. And it is temperature dependent while molality is the number of moles of solute dissolved per unit weight of solvent it is not temperature dependent

3Thank You

ANSWER

Arihant ke book me kitna sample paper h hai to send plz

Posted by Abhishek Patel 1 year, 8 months ago

CBSE > Class 12 > Chemistry

1 answers

Anjali Pal 1 year, 8 months ago

ANSWER

What is the oxidation state of Te in TeO3

Posted by Tanay Naik 1 year, 8 months ago

CBSE > Class 12 > Chemistry

2 answers

Na. Shakthi 1 year, 8 months ago

Idiot it is +6

Malik Ujaiv 1 year, 8 months ago

-6

ANSWER

Chemistry ki important case study h kisi ke ps

Posted by Aarzoo Saini 1 year, 8 months ago

CBSE > Class 12 > Chemistry

1 answers

Manish Singh 1 year, 8 months ago

Yes

9Thank You

ANSWER

Which out of molarity or molality will change in temperature way?

Posted by Jyoti Shinde 1 year, 8 months ago

CBSE > Class 12 > Chemistry

5 answers

Bava Samyuka 1 year, 8 months ago

Molality will change in temperature,as volume changes on temperature, but mass doesn't change...

Aarzoo Saini 1 year, 8 months ago

Molarity

Afridha Thamzeen A S 1 year, 8 months ago

Molarity as it depends on volume.

Manu Manu 1 year, 8 months ago

Molarity

Suryansh Srivastav 1 year, 8 months ago

By the formula Molality=molarity*1000/(1000*density) -(molarity*molar mass of component 2)

ANSWER

What would be formed

Posted by Tushar Goswami 1 year, 9 months ago

CBSE > Class 12 > Chemistry

3 answers

Tushar Goswami 1 year, 8 months ago

Temperature change

Jyoti Shinde 1 year, 8 months ago

An aqueous solution is 1.00 molal in kl. Which chlenge will cause the vapour pressure of the solutions to increase?

3Thank You

Rana Sidhu 1 year, 9 months ago

ANSWER

Explain how the rate of reaction for a given reaction can be affected when A) concentration is increased B) temprature is increased

Posted by Mohsin Khan 1 year, 9 months ago

CBSE > Class 12 > Chemistry

3 answers

Muskan Garg 1 year, 8 months ago

A) As rate depends upon the concentration raise to the power order of reaction. Therefore, on increasing concentration, rate will increase if order is greater than 0, but when order is zero then rate is independent of concentration. B) Rate increases with increase in temperature.

Rana Sidhu 1 year, 9 months ago

If concrnyration is increased then rate of reaction also in creased

Rana Sidhu 1 year, 9 months ago

Rate of reaction increased with increase in temperature. It varies with temperature

ANSWER

Anyone tell me what is thionyl chloride and it's uses...

Posted by Tushar Goswami 1 year, 9 months ago

CBSE > Class 12 > Chemistry

3 answers

Rana Sidhu 1 year, 9 months ago

Thionyl chloride is SoCl2

Tushar Goswami 1 year, 9 months ago

Thanks

Jatin Grewal 1 year, 9 months ago

Thionyl chloride (SOCl2) is an organic compound It is used as chlorinating agent in manufacture of organic compounds and in making pesticides

4Thank You

ANSWER

What is the product if we react C6h5br+ch2cocl in the presence of alcl3

Posted by Arpit Gupta 1 year, 9 months ago

CBSE > Class 12 > Chemistry

1 answers

Abhijeet Punia 1 year, 9 months ago

C6h5coch3

ANSWER

A first order reaction takes 69.3 min for 50% completion. What is the time of the reaction to get completed? (Given: log 5= 0.6990, log 8= 0.9030, log 2= 0.3010)

Posted by Pratibha Marmat 1 year, 9 months ago

CBSE > Class 12 > Chemistry

2 answers

Na. Shakthi 1 year, 8 months ago

Are stupid just apply formula T1/2 = 2.303/k × log a/a-x where a is initial concentration and x is concentration at which the t1/2 should be found

Pw Rakha 1 year, 9 months ago

0.98sec

ANSWER

Why are fibrous proteins insoluble in water even though they are held by hydrogen bonds?(Biomolecules)

Posted by Sneha Kotar 1 year, 9 months ago

CBSE > Class 12 > Chemistry

1 answers

Brajesh Kumar 1 year, 9 months ago

Nhi bataunga

6Thank You

ANSWER

Alpha hydrogen of aldehyde and phenol is acidic in nature

Posted by Vishakha Mogha 1 year, 9 months ago

CBSE > Class 12 > Chemistry

2 answers

Brajesh Kumar 1 year, 9 months ago

Coaching nhi padhte h Jo puchte h

Shivam Mbrics 1 year, 9 months ago

Yes

ANSWER

Convert phenol to 4-nitrophenol

Posted by Jhalak Aggarwal 1 year, 9 months ago

CBSE > Class 12 > Chemistry

1 answers

Srija Srija 1 year, 9 months ago

When phenol react with dil HNO3 the product will be form 4 nitrophenol

5Thank You

ANSWER

The preservation of fruits by adding concentrated sugar solution protects against bacterial action give reason

Posted by Vishakha Mogha 1 year, 9 months ago

CBSE > Class 12 > Chemistry

1 answers

Jyoti Shinde 1 year, 8 months ago

Multiple choice questions

ANSWER

1 amu

Posted by Champa Gupta 1 year, 9 months ago

CBSE > Class 12 > Chemistry

1 answers

Na. Shakthi 1 year, 8 months ago

Idiot what are u asking ask clearly

ANSWER

Alfa and beta % of glucose

Posted by Shailja Singh 1 year, 8 months ago

CBSE > Class 12 > Chemistry

1 answers

Preeti Dabral 1 year, 8 months ago

{tex}\alpha {/tex} -glucose and {tex}\beta {/tex} -glucose differ in configuration at C-1. They Differ in optical rotation. The differ in melting point also. Such isomers differing in configuration at C-1 are called anomers.

ANSWER

Degree of glucose

Posted by Shailja Singh 1 year, 9 months ago

CBSE > Class 12 > Chemistry

1 answers

Na. Shakthi 1 year, 8 months ago

Idiot what are u asking ask clearly

ANSWER

Which online test series is best for neet preparation? Actually,I appearing in neet2023.

Posted by Divya. Kumari 1 year, 9 months ago

CBSE > Class 12 > Chemistry

5 answers

Divya. Kumari 1 year, 9 months ago

Unacademy is best for all subjects ,only for test series??

Neeraj Chaudhary 1 year, 9 months ago

Yes

Hitesh Kundu 1 year, 9 months ago

How to prepare for boards

Priyanshu Yaduvanshi 1 year, 9 months ago

I have also got 695 by this

Priyanshu Yaduvanshi 1 year, 9 months ago

The Allen test series is best for neet

ANSWER

Silver atom has completely filled d orbital in it's ground state how can you say that it is a transition element

Posted by Sangita Boruah 1 year, 9 months ago

CBSE > Class 12 > Chemistry

4 answers

Na. Shakthi 1 year, 8 months ago

It has incompletely filled d orbital in oxidation state so it is Transition element

Ankush Bishnoi 1 year, 9 months ago

Because it has partially filled d orbital in its ionic state As per definition of transition elements that those have partially filled d orbital in elementary or ionic state

Karan Gadhekar 1 year, 9 months ago

Don't post personal information, mobile numbers and other details.
Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying.
Ask specific question which are clear and concise.

Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.

Rashi Nain 1 year, 9 months ago

Silver atom shows an oxidation state of +2 in its compounds like AgO ,AgF2 in which it's electronic configuration is d^9 so it is a transition element

ANSWER

Cl-(CH2)4- Cl into hexan -1,6 diamine

Posted by Nandani Sharma 1 year, 9 months ago

CBSE > Class 12 > Chemistry

2 answers

Sania Rahman 1 year, 9 months ago

1st of all.... Increasing the carbon no. In the main chain Cl–(CH2)4–Cl + 2KCN ~~~ NC–CH2)4–CN Then reduction of nitrile to amine NC–(CH2)4–CN + H²/Ni ~~~ H³N–(CH2)6–NH³ I hope it helps :D

3Thank You

Sania Rahman 1 year, 9 months ago

1st of all.... Increasing the carbon no. In the main chain Cl – (CH2)4 – Cl + 2KCN ~~~ NC – (CH2)4 – CN Then reduction of nitrile to amine NC - (CH2)4 - CN + H²/Ni ~~~ H³N - (CH2)6 - NH³ I hope it helps :D

ANSWER

structure of 3 methoxymethane propan 2 ol

Posted by Udhaya Sankari 1 year, 9 months ago

CBSE > Class 12 > Chemistry

3 answers

Anjali Pal 1 year, 8 months ago

Shi hai

Rana Sidhu 1 year, 9 months ago

Please anyone tell me that it is write or not

Rana Sidhu 1 year, 9 months ago

CH3CH2(OH) CH2(OCH3)

ANSWER

Why do transition elements show variable oxidation states ?

Posted by Krish Gupta 1 year, 9 months ago

CBSE > Class 12 > Chemistry

4 answers

Ankush Bishnoi 1 year, 9 months ago

in bonding both (n-1)d ns orbitals both take part because of low energy difference in between them

Dishant Singh 1 year, 9 months ago

Because the energy b/w valence orbitals ns and (n-1)d is nearly equal. So that the transition elements show variable oxidation states.

Sharan Dasari 1 year, 9 months ago

Transition elements show variable oxidation states because the energy between their valency orbitals {(n-1)d and ns} is very less. So the both the energy levels can be used for bond formation.

Mr Nishant Smith 1 year, 9 months ago

Yes

ANSWER

Rspl

Posted by N Keerthika 1920 1 year, 8 months ago

CBSE > Class 12 > Chemistry

1 answers

Na. Shakthi 1 year, 8 months ago

Don't post personal information, mobile numbers and other details.
Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying.
Ask specific question which are clear and concise.

Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.

ANSWER

If 22 gm of benzene is dissolved in 122 gm of carbontetrachloride, calculate mass percentage of benzene

Posted by Kunal Patidar 1 year, 9 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

To prepare 100ml is standard solution of m/20 ferrous ammonium salphate and by using thish solution find out the military and strength given kmno4 solution.(8)

Posted by Subhash Chandra 1 year, 9 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

By which method of preparation we get purest haloalkane

Posted by Salikul Islam 1 year, 9 months ago

CBSE > Class 12 > Chemistry

4 answers

Na. Shakthi 1 year, 8 months ago

Socl2 because the product like so2 and hcl get escaped

Dhanesh Pandya 1 year, 9 months ago

Darzene reaction

Shubham Baliyan 1 year, 9 months ago

R_oH react with red p/x2

Dhanesh Pandya 1 year, 9 months ago

Thionyl chloride (socl2)

ANSWER

to identify the anion and cation present in the given salt sample

Posted by Sriom Das 1 year, 9 months ago

CBSE > Class 12 > Chemistry

1 answers

Anshul Pratap Singh 1 year, 6 months ago

Anion means negative ( a negative ion ) Cation =positive Ex Na+(cation ) ,Cl- ,(anion)

ANSWER

Why zn called transition element ?

Posted by Yashveer Sharma 1 year, 9 months ago

CBSE > Class 12 > Chemistry

3 answers

Vp Raghavi 1 year, 9 months ago

The last electron of zn is filled in d orbital were it has fully filled d orbital 3d^10 4s^2 ,the transition element means it has valence electron but zinc is fully filled so it is not a transition element.

Hacker Bhai 1 year, 9 months ago

Zn is fully filled in last d orbital they are electronic configurations is 3d^104s^2 they are stable in common oxidation state and transition element mean a half filled in d orbital is know as transition element

Deepika Gautam 1 year, 9 months ago

Zn has fully fill d orbital present in there d subshell there electronic configuration is 3d^10 4s^2 so and transition elements means a half filled d orbital is known as transition elements. Hope it will!