Identification of Ions & Gases
1. This question has 2 part(s).
1.1. Two different liquids, M and N, were analysed. N was aqueous potassium iodide. The tests on the liquids and some of the observations are in the following table.
Complete the observations in the table.
Tests | Observations |
Test 1 Appearance of liquid M. | Colourless liquid with an antiseptic smell |
Test 2 Appearance of liquid N. | |
Test 3 A few drops of M were transferred to a dry watch glass. The liquid was touched with a lighted splint. | Burns with a yellow flame |
Test 4 Test 3 was repeated using liquid N. | |
Test 5 A little of liquid M was added to a crystal of iodine in a test-tube. The test-tube was shaken. | Orange-brown solution |
Test 6 To a little of liquid N, a few drops of dilute nitric acid was added, followed by silver nitrate solution. |
i) State the appearance of liquid N in Test 2.
[2]
ii) State the observation from using liquid N in Test 4.
[1]
iii) State the observation in Test 6.
[2]
1.2. What type of substance is liquid M?
Ai এর মাধ্যমে
১০ লক্ষ+ প্রশ্ন ডাটাবেজ
প্র্যাকটিস এর মাধ্যমে নিজেকে তৈরি করে ফেলো
উত্তর দিবে তোমার বই থেকে ও তোমার মত করে।
সারা দেশের শিক্ষার্থীদের মধ্যে নিজের অবস্থান যাচাই
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