Question
Easy
Sunita drops a piece of potassium metal in a beaker of cold water and notes down the observations. Which of the following observation is not correct ?
1
Potassium reacts violently with water.
2
It is endothermic reaction
3
Hydrogen gas is evolved
4
Pop sound is heard.
Question Details
Time to Solve: 12
Exam: CTET
Level/Paper: CTET_P2
Chapter: Pedagogy of Science
Topic: Approaches & Evaluation in Science Teaching
Correct Answer
Option B
Explanation
Option 2 is the correct answer because the reaction between potassium metal and water is not an endothermic reaction; it is actually an exothermic reaction. In an exothermic reaction, heat is released, which is consistent with the behavior of potassium when it reacts with water. The reaction is highly exothermic, releasing enough heat to ignite the hydrogen gas that is produced, often resulting in a flame. Let's examine why the…Read More
Similar Questions from REET Exam - Paper 1 - Year 2018
Question 1
Easy
Source :
Pedagogy of Science
Which of the following illustrates ‘science as inquiry' ?
Chapter :
Pedagogy of Science
Topic :
Approaches & Evaluation in Science Teaching
Question 2
Easy
Source :
Pedagogy of Science
A gender responsive pedagogy in science entails. (a) Use of gender sensitive language (b) Engaging students in examining stereotypes (c) Making gender based groups (d)…
Chapter :
Pedagogy of Science
Topic :
Approaches & Evaluation in Science Teaching
Question 3
Easy
Source :
Pedagogy of Science
The purpose of divergent questions in science classroom can be : (a) to promote critical thinking (b) to discern between students (c) to develop communication…
Chapter :
Pedagogy of Science
Topic :
Approaches & Evaluation in Science Teaching
Question 4
Easy
Source :
Fundamentals of Geography: Earth & Its Systems
Observe carefully the location of the sun, earth and moon in the given diagram and tell what it depicts :
Chapter :
Fundamentals of Geography: Earth & Its Systems
Topic :
Introduction to Geography & The Solar System