Find CBSE Class 11 Chemistry Practice Paper Set - I for the coming half yearly exam. These questions will not only help the students to prepare for exams in a better manner, but will also help them in understanding the depth with which a topic should be studied.
Importance of CBSE Class 11 Chemistry Practice Paper, 2017:
This Practice Paper for CBSE Class 11, is set as per the latest CBSE exam pattern and aims at helping the students to prepare for the exam more effectively so as to get the desired results.
Solution for this practice paper will be out very soon. Till then, give it a try to solve the paper to check your preparation for the coming exams.
This Practice Paper will Help You:
• understand the latest examination pattern.
• get aquainted to the important topics to be studied for the final Exam.
Few Sample Questions from this paper are as follows:
Q. If the mixing of two gases has ΔH = 0 value then explain whether the diffusion of these gases into each other in a closed container is a spontaneous process or not?
Q. Give reasons for the following:
(i) CO2 is a gas while SiC2 is solid at room temperature. Why?
(ii) Anhydrous AlCl3 is covalent but AlCl3.6H2O is ionic in nature.
(iii) Silicon shows a higher covalency than carbon. Why?
Q. Following table states the first (ΔH1) and the second (ΔH2) ionization enthalpies ( in kJ per mole) of a few elements along with their respective electron gain enthalphies (ΔegH) (in kJ per mole):
| Element |
ΔH1 |
ΔH2 |
ΔegH |
| A |
1008 |
1846 |
-295 |
| B |
1681 |
3374 |
-328 |
| C |
520 |
7300 |
-60 |
Which of the above element is likely to be :
(i) The most reactive metal.
(ii) The least reactive non metal
(iii) The most reactive non metal
Q. If water vapour is assumed to be a perfect gas, molar enthalpy change for vapourisation of 1
mol of water at 1bar and 100°C is 41kJmo−1. Calculate the internal energy change, when
(i) 1 mol of water is converted into ice.
(ii) 1 mol of water is vaporised at 1 bar pressure and 100°C.
Q. Raju noticed that the arms of his chair which were made of iron, have got rusted. Rusting is a type of corrosion in which metal reacts with compounds present in atmosphere to form a flaky surface compound causing the destruction of metal. In order to protect the chair Raju painted its arms.
(a) Write the chemical reaction involved in rusting of iron.
(b) Corrosion is an electrochemical phenomenon. Justify the statement.
(c) How painting the metal can prevent its rusting?
(d) Write some methods other than painting to prevent rusting.
Q. (a) Explain the following reactions
(i) Wurtz reaction
(ii) Friedel crafts alkylation
(b) Convert the following:
(i) 1-bromopropane to propene
(ii) Propyne to propane
(c) Melting point of cis-2-butene is lower than that of trans-2-butene. Why ?
