CBSE > Class 11 > Chemistry | CBSE Board | Homework Help | myCBSEguide

No products in the cart.

Ask questions which are clear, concise and easy to understand.

Ask Question

Define heat of neutralization

Posted by Shubham Kumar 2 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Shanika Sharma 2 years, 11 months ago

the quantity produced when a gram equivalent of a base or acid is neutralized with a gram equivalent of an acid or base in dilute solution

ANSWER

Extraction of essential oil in ajwain elaichi saunf

Posted by Sakshi Khakre 2 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Preeti Dabral 2 years, 11 months ago

Take about 750 ml of water in the steam generator and start heating to produce steam. In the round bottom flask take about 75 gm of crushed saunf. A vigorous current of steam from steam generator is passed through the round bottom flask. A part of the steam condenses in the round bottom flask.

ANSWER

The enthalpy of combustion of methane, graphite and dihydrogen at 298 K are, _890.3KJ mol-1 _393.5 KJ mol-1, and _285.8 KJ mol-1 respectively. Enthalpy of formation of CH4 (g) will be

Posted by Abdul Warish 2 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Shanika Sharma 2 years, 11 months ago

Ch4+2o2=co2+2h2o 🔺h1=-890.3 kj/mol C+o2=co2. 🔺=-393.5kj/mol 2h2+o2=2h2o 🔺=2×-285.8kj/mol =[-393.5+2(-285.8)-(-890.3)]kj/mol =-74.8KJ/MOL

ANSWER

why 1st group elements are called as alkali metal

Posted by Prajwal Acharya 2 years, 11 months ago

CBSE > Class 11 > Chemistry

2 answers

Shanika Sharma 2 years, 11 months ago

The elements of group 1 are called alkali metals because their oxides and hydroxides form alkalies solutions on treating with water.

Atul Antal 2 years, 11 months ago

Because they form alkalines when they react with water and dissolves in it

ANSWER

What is the formula of sodium permagert

Posted by Anupam Upadhyay 3 years ago

CBSE > Class 11 > Chemistry

5 answers

Jagriti 💖💕💞💞💖💖😎😎🥰🥰🥰 2 years, 11 months ago

NaMnO4

Shivansh Mishra 2 years, 11 months ago

NaMnO4

Shwêtã Árîc 2 years, 11 months ago

NaMnO₄

Shashank Sharma 2 years, 11 months ago

KmNO4

Nidhi Pandey Pandey 2 years, 11 months ago

NaMno4

ANSWER

Question and answer related to inductive effect.

Posted by B Prafull 3 years ago

CBSE > Class 11 > Chemistry

1 answers

Shanika Sharma 2 years, 11 months ago

1) Which shows more I effect?

ANSWER

Ch2 double bond Ch single bond ch2 single bond ch2 single bond BR

Posted by Harshit Chaudhary 3 years ago

CBSE > Class 11 > Chemistry

1 answers

Shanika Sharma 2 years, 11 months ago

IUPAC Name - 3−Bromo Propene Common Name - Allyl Bromide

ANSWER

What is the charls law

Posted by Parth Chourey 3 years ago

CBSE > Class 11 > Chemistry

2 answers

Preeti Dabral 3 years ago

Charles law states that the volume of an ideal gas is directly proportional to the absolute temperature at constant pressure. The law also states that the Kelvin temperature and the volume will be in direct proportion when the pressure exerted on a sample of a dry gas is held constant.

Bharath G 2 years, 9 months ago

Pv=constant

ANSWER

What is w

Posted by Karnav Nathani 3 years ago

CBSE > Class 11 > Chemistry

3 answers

Pravisha Shukla 2 years, 11 months ago

Work done

Shivansh Mishra 2 years, 11 months ago

Work,alphabet

Anas Khan 3 years ago

Hi

ANSWER

Define periodicity?

Posted by H Chauhan 3 years ago

CBSE > Class 11 > Chemistry

1 answers

Sabhya Sharma 3 years ago

Periodicity is repetition of a chemical or physical property of a element after a regular interval Best example of periodicity can be the Newland's law of octaves...

ANSWER

Derive 🔼 H=qp from first law of thermodynamics

Posted by Rohit Kumar 3 years ago

CBSE > Class 11 > Chemistry

1 answers

Shanika Sharma 2 years, 11 months ago

🔺H=🔺u+p🔺v At constant volume 🔺u=0 🔺H=🔺u 🔺H=qp+w W=0 🔺H=qp

ANSWER

Derive 🔼H=ap from first law of thermodynamics

Posted by Rohit Kumar 3 years ago

CBSE > Class 11 > Chemistry

1 answers

Shanika Sharma 2 years, 11 months ago

🔺H=🔺u+p🔺v At constant volume 🔺v=0 🔺H=🔺u 🔺H=qp +w W=0 🔺H=qp

ANSWER

An organic compound contains carbon hydrogen and oxygen its elemental analysis gave c, 38.71% and h, 9.67% the empirical formula of the compound would be

Posted by Rohit Kumar 3 years ago

CBSE > Class 11 > Chemistry

1 answers

Preeti Dabral 3 years ago

CH₃O

ANSWER

v+h2o= h4v6o17+h2 oxidation method redox equation

Posted by Barot Rutvik 3 years ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Name the life shaving drug and they disease they are

Posted by V Chowdeswari 3 years ago

CBSE > Class 11 > Chemistry

3 answers

Nikhil Kumar 3 years ago

Azido thiymidine for AIDS

Nikhil Kumar 3 years ago

Cis platin and texole for cancer

Suyash Ram 3 years ago

Charas ganja

ANSWER

Explain hydrogen bonding and it's types

Posted by Taha Shaikh 3 years ago

CBSE > Class 11 > Chemistry

2 answers

Preeti Dabral 3 years ago

Hydrogen bonding refers to the formation of Hydrogen bonds, which are a special class of attractive intermolecular forces that arise due to the dipole-dipole interaction between a hydrogen atom that is bonded to a highly electronegative atom

Kaushal Karan 2 years, 9 months ago

What percentage of energy of our country is provided by c o a l

ANSWER

SP hybridisation of CH triple bond CH

Posted by Drisya Pk 3 years ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Mendeleev prodic table

Posted by Suraj Rajput 3 years ago

CBSE > Class 11 > Chemistry

1 answers

Preeti Dabral 3 years ago

Mendeleev's Periodic Law: Properties of elements are the periodic function of their atomic masses.
Achievements:

It could classify all the elements discovered at that time.
It helped in discovery of new elements.
It helped in correction of atomic mass of some of the elements.

ANSWER

The volume of gas at 28°C in 5 litres. Calculate the volume of gas at 0°C?

Posted by Saniya Chanu 3 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Tanishq Pratap 3 years ago

V1/T1=V2/T2 ; V1=5L , V2=? , T1=301K , T2=273K; 5/301=V2/273; V2=5×273/301; V2= 1365/301; V2=4.5L Ans

ANSWER

Syllabus term 2

Posted by Keerthika K 3 years, 1 month ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

400ml of oxygen gas diffused in 2 min where as 300ml of unknown gas diffused in 5 min calculate the molecular weight of know gas

Posted by Kusum Naaz 3 years, 1 month ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

How to find unified mass of an element?

Posted by Emilin Sana 3 years ago

CBSE > Class 11 > Chemistry

1 answers

Preeti Dabral 3 years ago

931.5 MeV

ANSWER

Volume of 0.4 M sodium Tionate would be required to react with Iodine liberated by adding excess of KI to 50 mL of 0.2 M Copper sulphate solution is?

Posted by Japnoor Kaur 3 years, 1 month ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

What is the number of significant figures in 0.001620?

Posted by Durai Raj 3 years, 1 month ago

CBSE > Class 11 > Chemistry

5 answers

Asgar Ali 3 years, 1 month ago

4 significant figures leading zeroes are not significant figures

Marushika P 3 years ago

6

Sadakshi R 3 years, 1 month ago

4

Tnus Ror 3 years, 1 month ago

4

Krishna Achu 3 years, 1 month ago

4 significant figures

ANSWER

Exercise question

Posted by Arshath Hussain 3 years, 1 month ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

What is significance of ionic bond

Posted by Ravinsh Kumar 3 years, 1 month ago

CBSE > Class 11 > Chemistry

2 answers

Deepak Handi 2 years, 9 months ago

Gaining of electron

Ayush Kumar 3 years, 1 month ago

Ttt

ANSWER

How to calculate simplest whole no. molar ratio

Posted by Jingkmen Lang I Nongkrem 3 years, 1 month ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Difference between orbits and orbitals

Posted by Riya Salima 3 years, 1 month ago

CBSE > Class 11 > Chemistry

4 answers

Akrati Shukla 2 years, 10 months ago

Orbits do not have directional characters. Orbitals have directional character Except: s orbitals

Gangana Pandey 3 years, 1 month ago

Orbits are 2 Dimensional and orbitals are 3 Dimensional

Riya Salima 3 years, 1 month ago

Thankz

Krishna Achu 3 years, 1 month ago

Orbits are 2 Dimensional and orbitals are 3 Dimensional

ANSWER

Mention the limitations of the law of conversation of mass

Posted by Kusum Naaz 3 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Kusum Naaz 3 years, 1 month ago

400ml of oxygen gas diffused in 2 min where as 300ml of unknown gas diffused 5 min calculate the molecular weight of know gas

ANSWER

What is polar and non polar

Posted by M W 3 years, 1 month ago

CBSE > Class 11 > Chemistry

2 answers

Archana Yadav 2 years, 4 months ago

Polar and non-polar bond - A bond between two dissimilar atoms is called polar bond and similar atoms is called non-polar bond.

Sukhveeer Singh 3 years, 1 month ago

Polar are soluble in water Non polar are not soluble in water

ANSWER

Page 9 of 485

myCBSEguide App

myCBSEguide

Trusted by 1 Crore+ Students

Test Generator

Test Generator

Create papers online. It's FREE.

CUET Mock Tests

CUET Mock Tests

75,000+ questions to practice only on myCBSEguide app

Google Play

Download myCBSEguide App