Gas is a substance that has no definite shape or volume as the molecules are well separated with no regular arrangement. It can flow in any direction, downwards, upwards, or sideways. It can occupy the whole space of the vessel in which it is kept. A gas cylinder is a pressure vessel for the storage and containment of gases at above atmospheric pressure.

A dustbin is a large container for rubbish from a house or other building. It is usually made of strong plastic or metal and kept outside. It stores different kinds of renewable and non-renewable materials and helps keep the environment clean. The below picture is of a dustbin.

Waste is a product or substance which is no longer suited for its intended use. Electronic waste or E-waste describes discarded electrical or electronic devices. E-waste generally consists of devices such as DVDs, CDs, floppies and electronic components including chips, motherboards, etc. DVD is a non-biodegradable waste. The below picture is of a DVD.

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Frank PRIMARY SCIENCE.>Test Papers>Chapter 18 - Test Paper - V>TEST PAPER

Subject Experts Solutions for Exercise 1: TEST PAPER

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Subject Experts Science Solutions for Exercise - Subject Experts Solutions for Exercise 1: TEST PAPER

Attempt the free practice questions from Exercise 1: TEST PAPER with hints and solutions to strengthen your understanding. Frank PRIMARY SCIENCE. solutions are prepared by Experienced Embibe Experts.