Class -12 17- 04 -2020 Subject - Business studies Accountancy
Transcript of Class -12 17- 04 -2020 Subject - Business studies Accountancy
Class -12
Date – 17-04-2020
Home Assignment
Subject - Business studies
Chapter – 4 (Planning)
Write and learn the understanding -based questions (1-7) (4marks)
Write and learn the Application-based questions (1-9) (1 marks)
Subject – Accountancy
Chapter-4 (admission of a partner)
Question based on incomplete information. Solved the problem 1 to 10 in your practice
notebook.
Subject - Economics
Chapter- 5 (Money)
Write and learn Reason based questions (1- 16)
Write and learn the HOTS & Applications questions (1-5)
Collect data for last ten years as per information given for the following:
1.What is the rank of India in corruption at world level?
2. Total No. of Universities and colleges in India.
Class -12
Subject-Chemistry
Date-17/04/20)
Chapter- Chemical Kinetic
Assignment-4
(Do it in your practice notebook)
Q.1. The reaction between H2(g) and O2(g) is highly feasible yet allowing the
gases to stand at room temperature in the same vessel does not lead to the
formation of water. Explain.
Q.2. Why does the rate of a reaction increase with rise in temperature?
Q.3. Oxygen is available in plenty in air yet fuels do not burn by themselves at
room temperature. Explain.
Q.4. Why is the probability of reaction with molecularity higher than three very
rare?
Q.5. Why does the rate of any reaction generally decreases during the course of
the reaction?
Q.6. Thermodynamic feasibility of the reaction alone cannot decide the rate of
the reaction. Explain with the help of one example.
Q.7. Why in the redox titration of KMnO4 vs oxalic acid, we heat oxalic acid
solution before starting the titration?
Q.8. Why can’t molecularity of any reaction be equal to zero?
Q.9. Why molecularity is applicable only for elementary reactions and order is
applicable for elementary as well as complex reactions?
Q.10. Why can we not determine the order of a reaction by taking into
consideration the balanced chemical equation?
Class -12
Subject-Chemistry
(Solution of HW -16/04/20)
Chapter- Chemical Kinetic
Assignment-3
(Do it in your practice notebook)
Q.1
Ans. Bimolecular reaction becomes kinetically first order when one of the
reactants is in excess.
Q.2
And. Rate = k [A]0[B]0 or Rate = k
Q.3
Ans. Already discuss in class
Q.4
Ans. If the reaction is an elementary reaction, order is same as molecularity.
Q.5
Ans. Three, because rate = k [A]3
Q.6
Ans . [R]=[R] –kt 0
for completion [R] = 0 ∴ t = [R]0 / k
Q.7
Ans. During an elementary reaction, the number of atoms or ions colliding to
react is referred to as molecularity. Had this been an elementary reaction the
order of reaction with respect to B would have been 1, but in the 3 given rate law
it is 2 . This indicates that the reaction is not an elementary reaction.
Q.8
Ans. Apart from the energy considerations, the colliding molecules should also
have proper orientation for effective collision. This condition might not be getting
fulfilled in the reaction.
Q.9
Ans. No, the molecularity can never be zero or a fractional number.
Q.10
Ans. (i) Zero (ii) –k (iii) mol L-1 s-1
MD. SR SEC SCHOOL, MANKROLA
CLASS: 12TH
SUBJECT : BIOLOGY
HOME ASSIGNMENTS DATE: 17/04/2020
Good morning students.
Do all the questions of first chapter of your NCERT book .
These all questions should be in your practise note book.
M D Sr. Sec. School Mankrola, Gurugram
Class: 12th (Arts) Date:-17-04-20
Sub: Geography
Learn & Write ch:3 Exercise questionas of part -1 Population Composition
Sub: Phy. Education
Learn and write ch:2 Sports and Nutrition
LongAnswer type questions (14-19) in f/C notebook
MD SR. SEC. SCHOOL
GURUGRAM
HOME WORK
CLASS-XII
SUBJECT-MATH
TOPIC –DIFFERENTIABILITY DATE-17 APRIL 2020
COMPLETE EXERCISE 5.2 FROM YOUR NCERT TEXT BOOK.
MD SR. SEC. SCHOOL
GURUGRAM
HOME WORK
CLASS-XII
SUBJECT-PHYSICS
TOPIC- MAGNETISM DATE -17 APRIL 2020
Answer the following questions:
1. Define 1 ampere of current.
2. Why should spring or suspension wire in galvanometer have low torsional constant?
3. Write two factors by which voltage sensitivity of galvanometer can be increased.
4. Write two factors by which current sensitivity of galvanometer can be increased.
5. How is a galvanometer converted into a voltmeter? Explain
6. A square coil of side 10cm has 20 turns and carries a current of 20A.the coil is suspended
vertically and normal to the plane of coil makes an angle α with the direction of uniform
magnetic field of 0.80 T. if the torque experienced by the coil is 0.96N-m ,then find the value of
α.
7. Define current sensitivity and voltage sensitivity of galvanometer .increasing the current
sensitivity may not necessarily increase the voltage sensitivity of the galvanometer .justify your
answer.
8.
9. Draw the labelled diagram of galvanometer. Explain the function of radial magnetic field inside
the coil.
10. Sate the principle of moving coil galvanometer. Write two reasons why galvanometer cannot be
used as such to measure current in a circuit.
11.
12. Derive an expression for torque acting on a rectangular coil carrying current placed in uniform
magnetic field.
13. Derive an expression for the force between two parallel conductor carrying current.
14. A proton and an α−α− particle enter a uniform magnetic field perpendicularly with the same speed.
a. How many times is the time period of the α−α− particle than that of the proton? b. Also find the ratio of the radii of the circular path of the two particles?
HOME WORK
SUBJECT-ENGLISH
DATED-13-04-2020 CLASS-XII