Lakhmir Singh and Manjit Kaur Solutions for Chapter: Combustion and Flame, Exercise 5: Questions Based on High Order Thinking Skills (HOTS)
Lakhmir Singh Science Solutions for Exercise - Lakhmir Singh and Manjit Kaur Solutions for Chapter: Combustion and Flame, Exercise 5: Questions Based on High Order Thinking Skills (HOTS)
Attempt the free practice questions on Chapter 6: Combustion and Flame, Exercise 5: Questions Based on High Order Thinking Skills (HOTS) with hints and solutions to strengthen your understanding. Lakhmir Singh's SCIENCE FOR CLASS 8 solutions are prepared by Experienced Embibe Experts.
Questions from Lakhmir Singh and Manjit Kaur Solutions for Chapter: Combustion and Flame, Exercise 5: Questions Based on High Order Thinking Skills (HOTS) with Hints & Solutions
Abida and Ramesh want to heat water taken in separate beakers. Abida kept the beaker near the wick in the yellow part of the candle flame. Ramesh kept the beaker in the outermost part of the flame. Whose water will get heated in a shorter time? Why?
When a lot of dry powder of a substance X is released over a fire, the fire gets extinguished.
Write the chemical name of the substance X. (Sodium hydrogen carbonate / Sodium carbonate)
When a lot of dry powder of a substance X is released over a fire, the fire gets extinguished.
How does X extinguish the fire?
When a lot of dry powder of a substance is released over a fire, the fire gets extinguished.
Name another substance which behaves like .(potassium salt)
(Potassium bicarbonate/Potassium chloride)
What type of combustion is represented by burning of white phosphorus in air at room temperature? (Spontaneous combustion/ Non-spontaneous combustion)
What type of combustion is represented by burning of LPG in a gas stove? (Spontaneous combustion/Rapid combustion)
What type of combustion is represented by ignition of a cracker?
What type of combustion is represented by the burning of coal dust in a coal mine? (Spontaneous combustion/Non-Spontaneous combustion)
