Download App

Chemical Reactions and Equations — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceChemical Reactions and Equations2 Marks
Question
Name one reaction which is accompanied by the evolution of heat.
✓

Answer

All reactions which are Exothermic are accompanied by evolution of heat. One such example is burning of methane. Reaction is as Follows:$\text{CH}_4(\text{g)}+2\text{O}_2\text{(g)}\rightarrow\text{CO}_2\text{(g)}+2\text{H}_2\text{O}\text{(g)}$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "[2 Mark Questions]" from Chemical Reactions and Equations→Chemical Reactions and Equations — all question types→Science STD 10 question papers→CBSE Board STD 10 question papers→CBSE Board question paper generator→

Similar questions

What are the various steps which can be taken to control (or reduce) pollution caused by burning fossil fuels?
→
Define fuel. List any two characteristics that you would look for in a good fuel.
→
Prepare a list of five items that you use daily in the school. Identify from the list such items that can be recycled.
→
Draw ray diagrams to represent the nature, position and relative size of the image formed by a convex lens for the object placed:
a. At $2 F_1$
b. Between $F _1$ and the optical centre O of lens.
→
What is an alloy? Give two examples of alloys.
→
What type of repiration takes place:
  1. In yeast,
  2. In humans?
→
Give the reaction involved during extraction of zinc from its ore by.
  1. Roasting of zinc ore.
  2. Calcination of zinc ore.
→
What is the principle of an electric motor?
→
How is the amount of light entering the eye controlled?
→
A student uses spectacles of focal length $-2.5 m.$
$i.$ Name the defect of vision he is suffering from.
$ii.$ Which lens is used for the correction of this defect?
$iii.$ List two main causes of developing this defect.
$iv.$ Compute the power of this lens.
→