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Class-10 ACID, BASE AND SALT

# **अध्याय: अम्ल, क्षार और लवण (Acids, Bases and Salts)**

## **1. अम्ल (Acids)**

### **परिभाषा एवं मूल अवधारणा**

- 'Acid' शब्द की उत्पत्ति लैटिन भाषा के शब्द **'Acidus'** से हुई है, जिसका शाब्दिक अर्थ **'खट्टा'** होता है।

- **आरहेनियस (Arrhenius) सिद्धांत...

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PSYC 220 Ch. 1

Case Studies/Stories	Summary	Takeaway
Sofie Lentschner	- Sofie Lentscher: Born in 1908, second child of Jewish parents - Live in Leizpig, Germany - Mom: Socialite, hospitable; Father: Businessman, leader Baby Sofie: Determined, persistent. Inspect items, fascinated by piano Child: Introspective, loved school, language, piano lessons HS: Spoke English & French, successful pianist, didn't get married yet and went to university Hitler rose: had to move to Belgium. Lost contact of many family members

...

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Micro

1. BARR BODY ⭐

Definition

* Barr body is the condensed, inactive X chromosome seen in the nucleus of female somatic cells.
* It is also called sex chromatin.

Formation

* In females: 46,XX → one X chromosome becomes inactive.
* The inactive X chromosome becomes highly condensed and forms the Barr body.
* X-inactivation occurs early in embryonic development.

Number of Barr bodies

Barr bodies = Number of X chromosomes − 1

Examples:

* Normal female 46,XX → 1 Barr body
* Normal male 46,XY → 0
*...

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Linux 2

Q 4. Write Short Notes on the Following:

(b) Real-Time Operating System (RTOS): A Real-Time Operating System (RTOS) is an operating system that provides a response within a specified time limit. It is used in applications where timing is critical.

Types of RTOS

1. Hard Real-Time OS: The deadline must be met. Missing a deadline may lead to system failure.

2. Soft Real-Time OS: Occasional delays are acceptable, but performance may be affected.

Applications

1. Medical Equipment 2. Robotics 3. Air...

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Linux

Q 1. What is an Operating System? Explain its major functions and different types.

An Operating System (OS) is system software that acts as an interface between the user and computer hardware. It manages the hardware and software resources of a computer and provides an environment for running application programs.

Examples: Windows, Linux, macOS, Android and Unix.

Basic Structure

        User
          ↓
   Application Programs
          ↓
    Operating System
          ↓
       Hardware

Major

...

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Information security

Unit 1: Overview of Computer Security

1. Define the CIA Triad (Confidentiality, Integrity, Availability) and explain key security design principles.

Confidentiality: Ensures data is accessible only to authorized entities. It prevents unauthorized disclosure of sensitive information using encryption, access controls, and data masking.
Integrity: Guarantees that data remains accurate, complete, and uncorrupted by unauthorized modification or deletion. Maintained using hash functions, checksums, and

...

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Station

Explain Quartiles, Deciles and Percentiles
Quartiles
Quartiles divide ordered data into 4 equal parts: Q1
, Q2
, Q3
are three quartiles.
Q1
= First Quartile
Q2
= Second Quartile (Median)
Q3
= Third Quartile
Q1
tells about the point below which the first 25% of observations lie.
Q2
is the middle value or median.
Q3
tells us about the point below which 75% of observations lie.
Deciles
Deciles divide an ordered dataset into 10 equal parts. They are represented by D1
, D2
, D3
, D4
, D5
, D6
,
D7
, D8
, D9
.
D1
=...