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11th ICSE
IMPORTANT
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How you prepare benzene from acetylene?

Important Questions on Sample Question Paper 3

EASY
11th ICSE
IMPORTANT
ALL IN ONE ISC Chemistry CLASS 11>Chapter 17 - Sample Question Paper 3>SAMPLE QUESTION PAPER 3>Q 14
What is hyperconjugation?
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11th ICSE
IMPORTANT
ALL IN ONE ISC Chemistry CLASS 11>Chapter 17 - Sample Question Paper 3>SAMPLE QUESTION PAPER 3>Q 15

Explain, why the following systems are not aromatic ?

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MEDIUM
11th ICSE
IMPORTANT
ALL IN ONE ISC Chemistry CLASS 11>Chapter 17 - Sample Question Paper 3>SAMPLE QUESTION PAPER 3>Q 15

Explain, why the following systems are not aromatic ?    

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MEDIUM
11th ICSE
IMPORTANT
ALL IN ONE ISC Chemistry CLASS 11>Chapter 17 - Sample Question Paper 3>SAMPLE QUESTION PAPER 3>Q 15

Explain, why the following systems are not aromatic ?

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MEDIUM
11th ICSE
IMPORTANT
ALL IN ONE ISC Chemistry CLASS 11>Chapter 17 - Sample Question Paper 3>SAMPLE QUESTION PAPER 3>Q 16
The enthalpy of a vaporisation of CCl4 is 30.5 kJ mol-1. Calculate the heat required for the vaporisation of 284 g of CCl4 at constant pressure (molar mass of CCl4​=154 g mol-1) 
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11th ICSE
IMPORTANT
ALL IN ONE ISC Chemistry CLASS 11>Chapter 17 - Sample Question Paper 3>SAMPLE QUESTION PAPER 3>Q 16
Acetic acid (ethanoic acid) and hydrochloric acid react with KOH solution. The enthalpy of neutralisation of ethanoic acid is −55.8 kJ mol−1 while that of hydrochloric acid is −57.3 kJ mol−1. Can you think of why are these different?
 
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11th ICSE
IMPORTANT
ALL IN ONE ISC Chemistry CLASS 11>Chapter 17 - Sample Question Paper 3>SAMPLE QUESTION PAPER 3>Q 16
The standard heat of formation of CH4(g), CO2(g) and H2O(g) are -76.2, -394.8 and -241.6 KJ mol-1 respectively. Calculate the amount of heat evolved by burning 1 m3 of methane measured at NTP.
MEDIUM
11th ICSE
IMPORTANT
ALL IN ONE ISC Chemistry CLASS 11>Chapter 17 - Sample Question Paper 3>SAMPLE QUESTION PAPER 3>Q 16
Prove that: ∆H=∆U+∆ng.RT