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

Correct option is D) Compounds having same molecular formula but different structures due to the different arrangement of atoms or group of atoms in the parental chain are called chain isomers. Hexane and 3-methylpentane are chain isomers.

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What is thermal energy

Posted by Vivek Yadav 2 years, 10 months ago

CBSE > Class 11 > Chemistry

1 answers

Chahat Modi 2 years, 10 months ago

The word thermal here refers to temperature and together "thermal energy" word refers to hear energy, e.g.:1) The heat from heater ;2) A cup of hot Chocolate ;3) The warmth of a sun ;4) Baking in an oven ,. Thermal energy -example- kinetic energy of an atom

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The compound which does not form intramolecular hydrogen bond is

Posted by Priya Sisodiya 2 years, 10 months ago

CBSE > Class 11 > Chemistry

2 answers

Ankit ............ 2 years, 10 months ago

CCl,CH(OH)2,CHO.

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Anjan Karthi 2 years, 10 months ago

H2O, HF, NH3

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Describe Dalton's law of partial pressure. Derive the relation between mole fraction and partial pressure.

Posted by Divyanshu Kumar 2 years, 10 months ago

CBSE > Class 11 > Chemistry

1 answers

Athrav Singh 2 years, 10 months ago

Dalton law of partial pressure and state that the total pressure exerted by a mixture of non reacting gases is equal to the sum of partial pressure of each gas present in the mixture . Ptotal = P1 +P2 +P3....at constant T V

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A force of 98 N is just able to move a block of mass 20 kg on a rough horizontal surface. Coefficient of friction is (g = 9.8 m/sec2 ) :

Posted by Ankit Thakur 2 years, 10 months ago

CBSE > Class 11 > Chemistry

2 answers

Kartik Sharma 2 years, 9 months ago

0.5

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Anjan Karthi 2 years, 10 months ago

Coefficient of friction = Fnet / Fperpendicular = 98 / 19.6 = 5//

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How to learn chemistry easy to way second term exam .....??

Posted by Tasmiya Naaz 2 years, 10 months ago

CBSE > Class 11 > Chemistry

2 answers

Himanshu Rajput 2 years, 9 months ago

Do ncert again and again

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Chahat Modi 2 years, 10 months ago

Use Method: :(5 Steps) 1) Read and understand ch along with its concepts 2) Solve NCERT examples and exercises 3) Separately revise each topic in points 4) Separate theory explanation and Definitions, derivations 5) Accordingly, prepare markswise, chapter wise, subjective Questions from refresher, if in class 10,12, use previous 5 years Sample and Board Question paper

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Chlorination of methane

Posted by Ayush Mathur 2 years, 10 months ago

CBSE > Class 11 > Chemistry

1 answers

Anjan Karthi 2 years, 10 months ago

CH4 + Cl2 --- hυ and 573 - 773 K ---→ CH3Cl + HCl. Repeat the same 3 times to get CCl4 + 3HCl.

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Salts names with formulas

Posted by A. Yuvasri 2 years, 10 months ago

CBSE > Class 11 > Chemistry

3 answers

Kartik Sharma 2 years, 9 months ago

Nacl- sodium chloride Cacl calcium carbonate Kcl Pottasium chloride Na2co3 sodium carbonate

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Chahat Modi 2 years, 10 months ago

For more, refer to lakhmir singh and manjit kaur refresher book of chemistry

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Yash Sharma 2 years, 10 months ago

Na2CO3 CaCO3 NaCl CaCl KCl

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Calculate [h3o+] and [oh-] for blood serum , the pH of which is 7.4

Posted by Abhijeet Chanotiya 2 years, 10 months ago

CBSE > Class 11 > Chemistry

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Which element is highly electronegative?

Posted by Hitesh Rajput 2 years, 10 months ago

CBSE > Class 11 > Chemistry

2 answers

Parth Bansal 2 years, 10 months ago

Florine

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Joy Sarkar 2 years, 10 months ago

Fluorine is the most electronegative element.

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Is intermolecular force and intermolecular interaction is same??

Posted by Aryan Pal 2 years, 10 months ago

CBSE > Class 11 > Chemistry

2 answers

Hitesh Rajput 2 years, 10 months ago

No beta

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Gaurav Chauhan 2 years, 10 months ago

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Easy way for do reactions of chap hydrocarbons class 11

Posted by Prabhjot Kaur 2 years, 10 months ago

CBSE > Class 11 > Chemistry

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Difference between ionisation energy and electron gain enthalpy

Posted by Aditya Sabar 2 years, 10 months ago

CBSE > Class 11 > Chemistry

1 answers

Prabhjot Kaur 2 years, 10 months ago

Ionisation enthalpy is the energy which are used in loss of electrons and electron gain enthalpy is the energy which are used in gain of electrons

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What is hydride gap in hindi

Posted by Yamuna Sugandhi Gupta 2 years, 10 months ago

CBSE > Class 11 > Chemistry

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What is the ph of pyridine

Posted by Baburao Aapte 2 years, 10 months ago

CBSE > Class 11 > Chemistry

1 answers

Ankit ............ 2 years, 10 months ago

9.24

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2.The value of Planck’s constant is 6.63 × 10–34 J s. The velocity of light is 3.0 × 108 m s– 1. Which value is closest to the wavelength in nanometers of a quantum of light with frequency of 8 × 1015 s ? (a) 2 × 10–25 (b) 5 × 10–18 (c) 4 × 101 (d) 3 × 10

Posted by Darshan Patil 2 years, 10 months ago

CBSE > Class 11 > Chemistry

2 answers

Raghav Malik 2 years, 10 months ago

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Aditi - 2 years, 10 months ago

5.3×10-¹⁸

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Name the product formed when vapours of ethyne are passed through HCL

Posted by Ankita Pal 2 years, 10 months ago

CBSE > Class 11 > Chemistry

1 answers

Raghav Malik 2 years, 10 months ago

benzene (C6H6)

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45 square

Posted by Ansh Patel 2 years, 10 months ago

CBSE > Class 11 > Chemistry

1 answers

Anjan Karthi 2 years, 10 months ago

(45) ^2 = 2025.

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How many moles of Ethane are required to produce 22 gram of Co2 after combustion

Posted by Anshita Sharma 2 years, 10 months ago

CBSE > Class 11 > Chemistry

2 answers

Anjan Karthi 2 years, 10 months ago

1 molecule C2H6 (30 g) always gives 2 molecules CO2 (88 g). Therefore, mass of Ethane required for 22 g CO2 = 30 × 22 / 88 = 7.5 g. // No of moles of C2H6 = 7.5/30 = 0.25 mol. //

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Shivam Chaudhary 2 years, 10 months ago

hlo mam

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What pressure must be applied to a given sample of a gas in order to compress it to a 2/5 of its original volume at same temperature?

Posted by Gori Jain 2 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Anjan Karthi 2 years, 10 months ago

As per Boyle's law of chemical behaviour, at a constant T, P ~ 1/V. Therefore, to compress it to 2/5 th the volume, pressure required would be [ 1/(2/5) = 5/2 ] times the original pressure.

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for sodium atom number of electrons with m=0 will be

Posted by Ayush Prajapati 2 years, 11 months ago

CBSE > Class 11 > Chemistry

2 answers

Anjan Karthi 2 years, 11 months ago

I mean, 7 electrons

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Anjan Karthi 2 years, 11 months ago

2 electrons.

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The equilibrium constant for the reaction SO3 (g) ⇌ SO2 (g) + 12 O2 (g) is 0.18 at 900 K. What will be the equilibrium constant for the reaction SO2 (g) + 12 O2 (g) ⇌ SO3 (g)?

Posted by Anshu Dudi 2 years, 11 months ago

CBSE > Class 11 > Chemistry

2 answers

Shobhit Kumar 2 years, 11 months ago

For the reverse rax", equilibrium constant become 1/k So 1/0.18=5.6

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Mohd Daud 2 years, 11 months ago

For the reverse reaction, equilibrium constant becomes 1/k , So 1/0.18= 5.55

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Define 2nd law of thermodynamics.

Posted by Pranav Chaudhary 2 years, 11 months ago

CBSE > Class 11 > Chemistry

5 answers

Kartik Sharma 2 years, 9 months ago

Second law of thermodynamics says that universe as a increase enthropy because the universe is become huge every year

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Avantika Sahu 2 years, 11 months ago

Alkali metals are those metal which have only electron in outermost of the cell

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Anjan Karthi 2 years, 11 months ago

Li (Lithium) , Na (Sodium), K (Potassium), Rb (Rubidium) , Cs (Caesium) , Fr (Francium) .

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Nancy Dhakad 2 years, 11 months ago

Alkali metals kise kha jata hai

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Md Zeeshan 2 years, 11 months ago

The second law of thermodynamics means hot things always cool unless you do something to stop them.

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Important topic to study in chapter 5,6,8,9,11 Please help me

Posted by Ashish Yadav 2 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Md Zeeshan 2 years, 11 months ago

Subject

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To prepare a crystal of pure copper sulphate from a given impure sample of blue vitriol

Posted by Sushant Singh 2 years, 11 months ago

CBSE > Class 11 > Chemistry

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Give the iupac name to given structure CH3–CH2–CH2–O–CH(CH3)–CH3

Posted by Anshika Patel 2 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Anjan Karthi 2 years, 11 months ago

Isopropyl propyl ether.

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When MnO4- react with H2O2 in basic medium the following species are involved except

Posted by Naved Alam 2 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Anjan Karthi 2 years, 11 months ago

[MnO4-]→[Mn2+] and H2O2 → O2.

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Differentiate between pi and sigma bond

Posted by Mazia Beigh 2 years, 11 months ago

CBSE > Class 11 > Chemistry

4 answers

Prabhjot Kaur 2 years, 11 months ago

Pi bond is weak bond but sigma bond is strong bond and pi bonds are formed by side to side overlapping but sigma bond is formed by head to head overlapping

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Saurabh Hans 2 years, 11 months ago

Pi bond exist independently but sigma bond not exist independently it always exist with pi bond and pi bond is stronger than sigma bond

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Shubham Verma 2 years, 11 months ago

bond = Formed by lateral or side wise overlapping of atomic orbitals such that direction of overlap lies perpendicular to the axis σ bond = Formed by axial overlapping or end to end overlapping of atomic orbitals, along internuclear axis. It is more of stronger.

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Anjan Karthi 2 years, 11 months ago

σ bond = Formed by axial overlapping or end to end overlapping of atomic orbitals, along internuclear axis. It is more of stronger. There is proper distribution of electron density across the internuclear axis. Present mostly as SINGLE bonds between atoms. π bond = Formed by lateral or side wise overlapping of atomic orbitals such that direction of overlap lies perpendicular to the axis. It is more weaker than σ bonds. They are usually present as multiple bonds alongside single bonds. Electron density is distributed in an unorganized manner.

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How Group 1 elements reacts with water

Posted by Arvit Singh Arvit Singh 2 years, 11 months ago

CBSE > Class 11 > Chemistry