Logic learning 02

All naming reactions  (Handwritten notes.)                   organic chemistry naming reactions.

         pdf will be coming soon .............

 mathematics formulae . (integration , inverse trignometry , limits ) 

 organic questions (alkane, alkene, alkyne, aromatic compounds) pdf of the above questions here 👇👇👇👇   click here

 WHAT IS PARTITIONING ? Certain operating system use partitioned memory management to allow multiprogramming . • Partitioning means dividing main memory into various sections.  • These section are called as partitions.  • There are two types of partitions: 1) fixed partition .    2) variable partition.   Fixed partition  .  • In this method partitions are fixed at the time of system generation . At this time , system manager has to declear partition time.  • Fixed partition are also called static partition . On declearing fixed partition , the operating system create partition description table.  • It reduces the uses the CPU utiliisation .  • It reduces the degree of multiprogramming. .    variable partition .     In variable partition number of partition and their size are variable  • They are not defined at the time of system generation .  • These partition are created by operating systems...

  Question Bank Standard:- 12th Subject:- Computer Science (D9) Paper I March 2021 सूचना 1. फक्त शवद्यार्थ्यांना प्रश्नप्रकारांचा सराव करून देण्यासाठीच 2. सदर प्रश्नसंचातील प्रश्न बोर्डाच्या प्रश्नपशिके त येतीलच असे नाही याची नोंद घ्यावी. QUESTION BANK XII COMPUTER SCIENCE (D9) – PAPER I CHAPTER 1 – OPERATING SYSTEM MCQ – 1 Mark Q.No. Question Marking scheme 1. Operating system is a __________ i) hardware ii ) software iii) printer iv) input device 1 mark for correct alternative 2. ‘Open files’ is a system call provided under _________ of operating system. i) Information management ii) Process management iii) Memory management iv) GUI 1 mark for correct alternative 3. Program under execution is known as __________. i) File ii) Information iii) Data iv ) Process 1 mark for correct alternative 4. _______is a service of memory management of operating system. i) Copy a file ii) Suspend a Process iii) Allocate a chunk of memory iv) Open a directory 1 mark for correct alternative...

  Some important MCQ . Ans. :- a)-i) , b)- i) , c)- iii) , d)- iii)                        Ans. :- a)- ii) , b)- iii) , c) - iii) , d)- ii)                         Ans.:- a)- ii) , b) - i), c) - iii) , d) - ii)                        And. :- a)- iii) , b)- ii) , c)- iii) , d) - iii)                       Ans. :- a) - ii) , b) - i), c)- iii) , d) - iii)                      Some important previous year questions of programming. 1) 2) 3) 4)

  Surface tension.         Intermolecular forces:- The forces of attraction and repulsion between their molecules . These forces ,are called intermolecular . Their is to forces 1) cohesive force.  2) adhesive force. Cohesive force:- the force of attraction between 2 molecules of same substance called as cohesion. Adhesive force:- the force of attraction and repulsion between the two different substance like liquid and solid ,solid with gas etc. is called adhesion. Range of molecular forces:- The maximum distance between 2 molecules upto which intermolecular forces are effective (also called as short range forces). Distance (10 to the power -9). Sphere of influence :- an imaginary sphere drawn with given molecule as centre and radius equal to the molecular range . Surface film :- The layer of surface of liquid whose thickness is about equal to range of molecular attraction. Surface energy :- when a molecular is taken from the inside to the surface layer work...