E Doris James, Vandana Tirath, Anton Siromani and, Kiran Banerji Solutions for Exercise 1: Test

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 1: Test

Attempt the free practice questions from Exercise 1: Test 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 1: Test with Hints & Solutions

MEDIUM
8th CBSE
IMPORTANT

Can water or copper sulphate solution be used instead of kerosene to store sodium? Why or why not?

MEDIUM
8th CBSE
IMPORTANT

Study the diagram and answer the question.
Label the products (marked a, b, c, and d) obtained by the destructive distillation of coal.

Question Image

EASY
8th CBSE
IMPORTANT

How can the presence of (a) be confirmed?

Question Image 

MEDIUM
8th CBSE
IMPORTANT

What methods of irrigation will you use on a vegetable farm if there is shortage of water? Explain.

HARD
8th CBSE
IMPORTANT

What is petroleum refining? Draw a labelled diagram of a fractionating column.

EASY
8th CBSE
IMPORTANT

Yeast and sugar are added to a bottle of warm water. A balloon is fixed over the mouth of the bottle. After some time, the balloon inflates as yeast breaks down the sugar and releases gas. Which gas does it release?

EASY
8th CBSE
IMPORTANT

A battery and bulb are connected. The free ends of the wires from the battery and the bulb are brought in contact with items A, B, C, and D, one by one. The bulb does not light up when the wires touch C. which of these could C be made of?

EASY
8th CBSE
IMPORTANT

A clean iron nail is dropped into a test tube filled with copper sulphate solution. After an hour, the solution which was blue in colour turns green. The iron nail has a reddish-brown deposit on it. Identify the green solution. Identify the reddish-brown deposit.