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class 7 chapter 8

1. What is a Query and Types of Query in MS Access? Definition: A Query is used to retrieve specific data from one or more tables in a database. It helps to filter, sort, and analyze data easily. Types of Queries in MS Access: Select Query – Used to display data based on certain conditions. Action Query – Used to change data (Update, Delete, Append, or Make-Table). Parameter Query – Asks the user for input (like a search term) before showing results. Crosstab Query – Used to summarize and analyze data in table format. SQL Query – Used to write queries directly using SQL commands. 2. Steps to Create the First Query in MS Access Open MS Access and open your database. Click on the Create tab. Select Query Design. Choose the table(s) you want to use and click Add, then Close. In the design grid, add the fields you want to display. In the Criteria row, type the condition (e.g., >50 or "India" ). Click on the Run button (red exclamat...

Chapter 7 class 5

  🌐 What is Internet? The Internet is a network of computers connected all around the world. It helps people to share information , send messages , watch videos , play games , and learn new things . 💡 Example: When you use Google , YouTube , or send an email , you are using the Internet . 📱 Uses of Internet: To search for information. To send and receive emails. To watch videos and listen to music. To talk with friends and family through chat or video calls. To play online games. To attend online classes. ⚠️ Safe Use of Internet: Don’t share your personal information (like name, address, or school). Use the Internet only with your parents’ or teachers’ permission . Visit only safe and educational websites . Here’s a simple explanation for Class 5 students about web browsers and their main components 👇 🌐 What is a Web Browser? A web browser is a software that helps us open and view websites on the Internet . It allows us to search ...

9th pratice

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    MCQs on Variables and Data Types 1. What will be the output of the following code? int a = 5, b = 2; double c = a / b; System.out.println(c); a) 2 b) 2.0 c) 2.5 d) 2.50 ✅ Answer: b) 2.0 2. Which of the following is NOT a valid variable name? a) _count b) $total c) 2value d) value2 ✅ Answer: c) 2value 3. The range of a byte data type in Java is: a) -128 to 127 b) 0 to 255 c) -255 to 255 d) -127 to 127 ✅ Answer: a) -128 to 127 4. What is the output of the following code? char ch = 'A' + 1; System.out.println(ch); a) A b) B c) 66 d) Error ✅ Answer: b) B 5. What is the result of 10 + 20 + "Java"? a) Java30 b) 30Java c) 1020Java d) Error ✅ Answer: b) 30Java 6. Which of the following statements is valid? a) float f = 7.3; b) float f = 7.3f; c) float f = "7.3"; d) float f = (float)"7.3"; ✅ Answer: b) float f = 7.3f; 7. What is the default val...

class 4th chapter 7

1. Additional Presentation Answer: An additional presentation is a way to show ideas and information on a screen using slides instead of only using textbooks. It helps students understand the topic easily by using pictures, text, charts, and animations . Examples: Microsoft PowerPoint Google Slides Canva Presentation 2. Letter Spacing vs Word Spacing Question: Sameer wants to add more space between the letters of the text. Which option will help him? Answer: Letter Spacing Explanation: Letter Spacing increases or decreases the space between individual letters in a word. Word Spacing changes the space between words , not letters. 3. Horizontal Alignment of Text Question: How many horizontal alignments of text are there? Answer: There are four horizontal alignments of text. For Class 4 Students: Left Align – text starts from the left side. Right Align – text starts from the right side. Center Align – text comes in the middle. Ju...

DBMS class 7 chapter 7

  1. Which object in Access allows you to organise and display data based on specific criteria? a) Tables b) Queries ✅ c) Forms d) Reports ✅ Correct Answer: b) Queries 💡 Explanation: Queries in MS Access are used to filter, sort, and display specific data based on given conditions or criteria. 2. Which combination of data types allows us to store multimedia files like images, documents and presentations in a table? a) OLE Object and Attachment ✅ b) Lookup Wizard and OLE Object c) Attachment and Lookup Wizard d) Calculated and OLE Object ✅ Correct Answer: a) OLE Object and Attachment 💡 Explanation: OLE Object stores files like Word documents or Excel sheets. Attachment allows storing multiple files such as images, videos, and documents in a single record. Question 3: In a table with fields ‘Unit_Price’ and ‘Total_Cost’, where ‘Total_Cost’ should be automatically calculated as the product of Unit_Price a...

Gmail

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  kiranphoto39@gmail.com Kiran Kumar Behuria behuriakirankumar31@gmail.com (opens a ne Kiran Kumar Behuria kirankumarbehuria1@gmail.com (opens a new tab) w tab)
 In the meantime, to ensure uninterrupted learning,  we request you to use the following alternative link for student classes 1. Weighing Scale: https://youtu.be/67mwlhwPBi0 2. Fishing Rod: https://youtu.be/TTXm6dTjDvg 3. Revolving Crane: https://youtu.be/CKQKhRnwz6E 4. Series and Parallel Circuits: https://youtu.be/8Oa4zi6_YF4 5. Solar System: https://youtu.be/6vdz5Ld70GA 6. Ball Shooter: https://youtu.be/-u7NFQ3Jy5Q 7. Magnifier : https://youtu.be/9xUtzhLpBqI 8. Remote Control Car: https://youtu.be/Uag7_LT_mGg 9. Army Tank : https://youtu.be/bJomksbjIBk 10. Unicycle Rider : https://youtu.be/Gbv4cwkSpis 11. Elliptical Trammel : https://youtu.be/o7sSaG2Z2OY 12. Light Following Robot : https://youtu.be/JlLuqApQcUs 13. Drum Machine: https://youtu.be/an96txzw5M8 14. Object Detection Car: https://youtu.be/3_HlT9TaP3k 15. Drilling Machine : https://youtu.be/DJ1D6JliqwY 16. Shredder : https://youtu.be/EpKiqBXIShE 17. Mini Serving Bot : https://youtu.be/DQeDRlBDEis 18. Smart Waste Di...
 ✅ Sprite: A sprite is a character or object in Scratch that can move, perform actions, and interact with other sprites. Example: Cat, Dog, Ball, etc. ✅ Default Sprite: The default sprite is the sprite that appears automatically when you start a new Scratch project. In Scratch, the default sprite is the Cat . Steps to Work with Multiple Sprites in Scratch Open Scratch and start a new project. Add a new sprite : Click on the “Choose a Sprite” button below the Stage. You can choose from library , paint a new sprite , upload an image , or use surprise sprite . Select a sprite you want to work with by clicking on it. Give scripts to each sprite: Click the Code tab and drag blocks to make that sprite move, talk, or interact . Switch between sprites : Click the sprite icon in the sprite list below the Stage to select a different sprite. Run the program : Click the green flag to see all sprites acting together . Edit or delet...

Looping in java (class 8)

 A for loop is a control structure that allows you to repeat a block of code a specific number of times. In Java, the syntax is: for (initialization; condition; update) { // code to be executed } 🧩 Explanation of each part Initialization → executed once before the loop starts. (Usually used to declare and set a loop variable.) Condition → checked before each iteration. If it’s true , the loop runs. Update → executed after every iteration (to change the loop variable). ⚙️ Real-time Example Imagine you are a teacher and want to display the names of 5 students in order. Instead of writing 5 print statements, you can use a for loop . 💻 Example 1 – Simple counting class ForLoopExample { public static void main (String[] args) { for ( int i = 1 ; i <= 5 ; i++) { System.out.println( "Student number: " + i); } } } Output: Student number: 1 Student number: 2 Student number: 3 Student number: ...

9th class pratice 1

  🧠 Section A: Multiple Choice Questions (1 mark each × 5 = 5 marks) Q1. Which of the following is a valid variable name in Java? a) 2number b) myNumber c) my number d) int Answer: b) myNumber Q2. Which of the following data types can store a decimal value? a) int b) char c) double d) boolean Answer: c) double Q3. The Scanner class is defined in which package? a) java.util b) java.io c) java.lang d) java.text Answer: a) java.util Q4. What is the result of (int) 9.7 in Java? a) 9.0 b) 9 c) 10 d) Error Answer: b) 9 Q5. Which method of the Math class returns the square root of a number? a) Math.pow() b) Math.sqrt() c) Math.abs() d) Math.round() Answer: b) Math.sqrt() ✍️ Section B: Short Answer Questions (2 marks each × 5 = 10 marks) Q1. Define a variable. Give one example. Answer: A variable is a named memory location used to store a value. Example: int age = 15; Q2. Differentiate...