Chapter 1 – Chemical Reactions and Equations

16 questions · Class 10 Science

1

Study the experimental set-up shown in the diagram and write chemical equation for the chemical reaction involved.

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2

1. Copper powder is taken in a china dish and heated over a burner. Name the product formed and state its colour. Write the chemical equation for the reaction involved.

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3

Example 15. Oil and fat containing food items are flushed with nitrogen. Why? (Understand) [NCERT] Total MarksBreakdown (As per CBSE Marking Scheme)2✓ Name the phenomenon involved…

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4

Read the following passages and answer the questions that follow: Rahul was asked to perform an experiment by his science teacher.

case_study Have you Observed the Effects of Oxidation Reactions in Everyday Life?
5

The emission of brown fumes in the given experimental set-up is due to:

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6

Which of the following is the correct observation of the reaction shown in the following set up?

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7

**Example 1:**Consider the numbers (4n), where (n) is a natural number.

very_short Chemical Equations
8

You are provided with two containers made up of copper and aluminium.

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9

Study the figure given below and answer the following questions:

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10

(A) Samarth brought an iron pipe but forgot to use it.

LA (Long) Chemical Equations
11

A synthesis or combination reaction is a reaction in which simple compounds combine to make a more complex one.

CB (Case Based) Have you Observed the Effects of Oxidation Reactions in Everyday Life?
12

Aditya was tasked with the clean up and organisation of the chemistry lab by his teacher.

CB (Case Based) Have you Observed the Effects of Oxidation Reactions in Everyday Life?
13

Rehan takes two test tubes.

CB (Case Based) Have you Observed the Effects of Oxidation Reactions in Everyday Life?
14

## Example 2. Case Based: A 2 cm long thin ribbon of a metal 'X' was taken and first cleaned with a sandpaper. It was then burnt using a spirit lamp or burner by holding it with a…

CB (Case Based) NCERT Activity 1.1
15

Read the following case and answer the questions that follow: Amit took two boiling tubes, he added about 2 grams of a green coloured metal salt

CB (Case Based) NCERT Activity 1.5, 1.6
16

53. During the time period of her experimental class, the science teacher Mrs. Priyanjali, placed an experimental set-up in front of the students as shown in figure

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