Amarnath Mishra, Geeta Mehta, Rajesh Mohan and, Deepti Lehri Solutions for Chapter: Synthetic Materials, Exercise 1: Exercises

Author:Amarnath Mishra, Geeta Mehta, Rajesh Mohan & Deepti Lehri

Amarnath Mishra Science Solutions for Exercise - Amarnath Mishra, Geeta Mehta, Rajesh Mohan and, Deepti Lehri Solutions for Chapter: Synthetic Materials, Exercise 1: Exercises

Attempt the practice questions on Chapter 5: Synthetic Materials, Exercise 1: Exercises with hints and solutions to strengthen your understanding. Basic Science for Class 8 solutions are prepared by Experienced Embibe Experts.

Questions from Amarnath Mishra, Geeta Mehta, Rajesh Mohan and, Deepti Lehri Solutions for Chapter: Synthetic Materials, Exercise 1: Exercises with Hints & Solutions

EASY
8th CBSE
IMPORTANT

_____fibres compete with wool.

EASY
8th CBSE
IMPORTANT

Polythene carry bags _____ drains and sewers.

EASY
8th CBSE
IMPORTANT

Plastics are generally _____ (biodegradable/ non-biodegradable) i.e., they are not environmentally broken down to simpler, harmless substances.

EASY
8th CBSE
IMPORTANT

On being burnt, plastics give _____ gases. (toxic / innocuous / safe)

EASY
8th CBSE
IMPORTANT

Nylon has _____ tensile strength than cotton. (lower / higher)

EASY
8th CBSE
IMPORTANT

On being heated, polyester and nylon _____ before they burn.

MEDIUM
8th CBSE
IMPORTANT

Which of the following is a bad conductor of electricity?

MEDIUM
8th CBSE
IMPORTANT

Match the columns A and B

A   B
(a) Cellulose (i) Artificial wool
(b) Nylon (ii) Semisynthetic fibre
(c) Acrylics (iii) Carry bags
(d) Acetate rayon (iv) Parachutes
(e) Polythene (vi) Glucose