E Doris James, Vandana Tirath, Anton Siromani and, Kiran Banerji Solutions for Exercise 4: Higher-order Thinking Skills

Author:E Doris James, Vandana Tirath, Anton Siromani & Kiran Banerji

E Doris James Science Solutions for Exercise - E Doris James, Vandana Tirath, Anton Siromani and, Kiran Banerji Solutions for Exercise 4: Higher-order Thinking Skills

Attempt the free practice questions from Exercise 4: Higher-order Thinking Skills with hints and solutions to strengthen your understanding. New Science Ahead 8 solutions are prepared by Experienced Embibe Experts.

Questions from E Doris James, Vandana Tirath, Anton Siromani and, Kiran Banerji Solutions for Exercise 4: Higher-order Thinking Skills with Hints & Solutions

HARD
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 6 - Combustion and Flame>Higher-order Thinking Skills>Q 1

Why does a candle flame go out when you blow on it? (Hint: It is wax vapour that burns. Think of the methods used to extinguish fires and what happens to the vapour when you blow on it)

HARD
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 6 - Combustion and Flame>Higher-order Thinking Skills>Q 2

Hydrogen has the highest calorific value and also does not cause pollution. Why is it not used as a domestic fuel?

HARD
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 6 - Combustion and Flame>Higher-order Thinking Skills>Q 3

A stove is supposed to produce a blue flame. What could be wrong if it produces a yellow flame?